24 results on '"Andres Izquierdo"'
Search Results
2. Collaborative Database to Track Mass Mortality Events in the Mediterranean Sea
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Joaquim Garrabou, Daniel Gómez-Gras, Jean-Baptiste Ledoux, Cristina Linares, Nathaniel Bensoussan, Paula López-Sendino, Hocein Bazairi, Free Espinosa, Mohamed Ramdani, Samir Grimes, Mouloud Benabdi, Jamila Ben Souissi, Emna Soufi, Faten Khamassi, Raouia Ghanem, Oscar Ocaña, Alfonso Ramos-Esplà, Andres Izquierdo, Irene Anton, Esther Rubio-Portillo, Carmen Barbera, Emma Cebrian, Nuria Marbà, Iris E. Hendriks, Carlos M. Duarte, Salud Deudero, David Díaz, Maite Vázquez-Luis, Elvira Alvarez, Bernat Hereu, Diego K. Kersting, Andrea Gori, Núria Viladrich, Stephane Sartoretto, Ivane Pairaud, Sandrine Ruitton, Gérard Pergent, Christine Pergent-Martini, Elodie Rouanet, Nuria Teixidó, Jean-Pierre Gattuso, Simonetta Fraschetti, Irene Rivetti, Ernesto Azzurro, Carlo Cerrano, Massimo Ponti, Eva Turicchia, Giorgio Bavestrello, Riccardo Cattaneo-Vietti, Marzia Bo, Marco Bertolino, Monica Montefalcone, Giovanni Chimienti, Daniele Grech, Gil Rilov, Inci Tuney Kizilkaya, Zafer Kizilkaya, Nur Eda Topçu, Vasilis Gerovasileiou, Maria Sini, Tatjana Bakran-Petricioli, Silvija Kipson, and Jean G. Harmelin
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climate change ,ocean warming ,marine heat wave impacts ,marine disease ,marine conservation and protection ,Science ,General. Including nature conservation, geographical distribution ,QH1-199.5 - Published
- 2019
- Full Text
- View/download PDF
3. A wolf spider from South American grasslands: phylogenetic placement and redescription of Paratrochosina amica (Mello-Leitão 1941)
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Anita Aisenberg, Matías Andres Izquierdo, Verónica Gonnet, Miguel Simó, Luis N. Piacentini, Álvaro Laborda, Leticia Bidegaray-Batista, and Damián Hagopián
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Mitochondrial DNA ,Subfamily ,biology ,Phylogenetic tree ,Evolutionary biology ,Protein subunit ,Wolf spider ,Transfer RNA ,Cytochrome c oxidase subunit I ,Animal Science and Zoology ,biology.organism_classification ,16S ribosomal RNA - Abstract
The male of the wolf spider Paratrochosina amica (Mello-Leitao 1941) is redescribed, and the female of this species is described for the first time. Additionally, we evaluate the phylogenetic position of P. amica using the mitochondrial genes cytochrome c oxidase subunit I (cox1), the 12S rRNA (12S) and 16S rRNA (16S), NADH deshydrogenase subunit I (nad1) and the complete tRNA leu (L1). In live specimens we recognized three different morphotypes based on colour patterns. There were no differences in genitalic features of males and females among the three morphotypes. Molecular results through GMYC analyses did not identify independent evolutionary lineages. Genetic and taxonomic results support that the three morphotypes are conspecific. Phylogenetic analysis confirms the position of P. amica in the subfamily Allocosinae.
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- 2021
4. Three-dimensional imaging of human teeth: an in vitro study of caries detection using micro computed tomography
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Andres Izquierdo, Christine Tanner, Georg Schulz, Jeannette von Jackowski, Griffin Rodgers, Hans Deyhle, and Bert Müller
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- 2022
5. Nano-tomography of dental composites with wide color matching
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Mattia Humbel, Mario Scheel, Christine Tanner, Griffin Rodgers, Georg Schulz, Corinne Carlucci, Jeannette von Jackowski, Guido Sigron, Andres Izquierdo, Timm Weitkamp, and Bert Müller
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- 2022
6. Marine heatwaves drive recurrent mass mortalities in the Mediterranean Sea
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Joaquim Garrabou, Daniel Gómez‐Gras, Alba Medrano, Carlo Cerrano, Massimo Ponti, Robert Schlegel, Nathaniel Bensoussan, Eva Turicchia, Maria Sini, Vasilis Gerovasileiou, Nuria Teixido, Alice Mirasole, Laura Tamburello, Emma Cebrian, Gil Rilov, Jean‐Baptiste Ledoux, Jamila Ben Souissi, Faten Khamassi, Raouia Ghanem, Mouloud Benabdi, Samir Grimes, Oscar Ocaña, Hocein Bazairi, Bernat Hereu, Cristina Linares, Diego Kurt Kersting, Graciel la Rovira, Júlia Ortega, David Casals, Marta Pagès‐Escolà, Núria Margarit, Pol Capdevila, Jana Verdura, Alfonso Ramos, Andres Izquierdo, Carmen Barbera, Esther Rubio‐Portillo, Irene Anton, Paula López‐Sendino, David Díaz, Maite Vázquez‐Luis, Carlos Duarte, Nuria Marbà, Eneko Aspillaga, Free Espinosa, Daniele Grech, Ivan Guala, Ernesto Azzurro, Simone Farina, Maria Cristina Gambi, Giovanni Chimienti, Monica Montefalcone, Annalisa Azzola, Torcuato Pulido Mantas, Simonetta Fraschetti, Giulia Ceccherelli, Silvija Kipson, Tatjana Bakran‐Petricioli, Donat Petricioli, Carlos Jimenez, Stelios Katsanevakis, Inci Tuney Kizilkaya, Zafer Kizilkaya, Stephane Sartoretto, Rouanet Elodie, Sandrine Ruitton, Steeve Comeau, Jean‐Pierre Gattuso, Jean‐Georges Harmelin, Universidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicada, Universidad de Alicante. Departamento de Fisiología, Genética y Microbiología, Biología Marina, Ecología Microbiana Molecular, Institut méditerranéen d'océanologie (MIO), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'océanographie de Villefranche (LOV), Observatoire océanologique de Villefranche-sur-mer (OOVM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), ANR-17-MPGA-0001,4Oceans,Predicting future oceans under(2017), Agencia Estatal de Investigación (España), Ministerio de Ciencia, Innovación y Universidades (España), European Commission, Ministerio de Economía y Competitividad (España), Garrabou, Joaquim, Gómez-Gras, Daniel, Medrano, Alba, Cerrano, Carlo, Ponti, Massimo, Schlegel, Robert, Bensoussan, Nathaniel, Turicchia, Eva, Sini, Maria, Gerovasileiou, Vasili, Teixido, Nuria, Mirasole, Alice, Tamburello, Laura, Cebrian, Emma, Rilov, Gil, Ledoux, Jean-Baptiste, Souissi, Jamila Ben, Khamassi, Faten, Ghanem, Raouia, Benabdi, Mouloud, Grimes, Samir, Ocaña, Oscar, Bazairi, Hocein, Hereu, Bernat, Linares, Cristina, Kersting, Diego Kurt, la Rovira, Graciel, Ortega, Júlia, Casals, David, Pagès-Escolà, Marta, Margarit, Núria, Capdevila, Pol, Verdura, Jana, Ramos, Alfonso, Izquierdo, Andre, Barbera, Carmen, Rubio-Portillo, Esther, Anton, Irene, López-Sendino, Paula, Díaz, David, Vázquez-Luis, Maite, Duarte, Carlo, Marbà, Nuria, Aspillaga, Eneko, Espinosa, Free, Grech, Daniele, Guala, Ivan, Azzurro, Ernesto, Farina, Simone, Cristina Gambi, Maria, Chimienti, Giovanni, Montefalcone, Monica, Azzola, Annalisa, Mantas, Torcuato Pulido, Fraschetti, Simonetta, Ceccherelli, Giulia, Kipson, Silvija, Bakran-Petricioli, Tatjana, Petricioli, Donat, Jimenez, Carlo, Katsanevakis, Stelio, Kizilkaya, Inci Tuney, Kizilkaya, Zafer, Sartoretto, Stephane, Elodie, Rouanet, Ruitton, Sandrine, Comeau, Steeve, Gattuso, Jean-Pierre, Harmelin, Jean-Georges, Joaquim Garrabou, Daniel Gómez-Gra, Alba Medrano, Carlo Cerrano, Massimo Ponti, Robert Schlegel, Nathaniel Bensoussan, Eva Turicchia, Maria Sini, Vasilis Gerovasileiou, Nuria Teixido, Alice Mirasole, Laura Tamburello, Emma Cebrian, Gil Rilov, Jean-Baptiste Ledoux, Jamila Ben Souissi, Faten Khamassi, Raouia Ghanem, Mouloud Benabdi, Samir Grime, Oscar Ocaña, Hocein Bazairi, Bernat Hereu, Cristina Linare, Diego Kurt Kersting, Graciel la Rovira, Júlia Ortega, David Casal, Marta Pagès-Escolà, Núria Margarit, Pol Capdevila, Jana Verdura, Alfonso Ramo, Andres Izquierdo, Carmen Barbera, Esther Rubio-Portillo, Irene Anton, Paula López-Sendino, David Díaz, Maite Vázquez-Lui, Carlos Duarte, Nuria Marbà, Eneko Aspillaga, Free Espinosa, Daniele Grech, Ivan Guala, Ernesto Azzurro, Simone Farina, Maria Cristina Gambi, Giovanni Chimienti, Monica Montefalcone, Annalisa Azzola, Torcuato Pulido Manta, Simonetta Fraschetti, Giulia Ceccherelli, Silvija Kipson, Tatjana Bakran-Petricioli, Donat Petricioli, Carlos Jimenez, Stelios Katsanevaki, Inci Tuney Kizilkaya, Zafer Kizilkaya, Stephane Sartoretto, Rouanet Elodie, Sandrine Ruitton, Steeve Comeau, Jean-Pierre Gattuso, and Jean-Georges Harmelin
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Aquatic Organisms ,Foundation species ,Coralligenous habitats ,Marine conservation ,Climate Change ,[SDE.MCG]Environmental Sciences/Global Changes ,Impact assessment ,climate change ,coralligenous habitats ,foundation species ,habitat-forming species ,impact assessment ,marine conservation ,marine heatwaves ,temperate reefs ,Marine heatwaves ,Centro Oceanográfico de Baleares ,Coralligenous Assemblages ,climate change, coralligenous habitats, foundation species, habitat-forming species, impact assessment, marine conservation, marine heatwaves, temperate reefs ,Mediterranean Sea ,Responses ,Environmental Chemistry ,Climate change ,Temperate reefs ,Medio Marino ,[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment ,Ecosystem ,[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography ,General Environmental Science ,[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere ,Global and Planetary Change ,Climate-Change ,Ecology ,Surface Temperature ,[SDE.ES]Environmental Sciences/Environmental and Society ,Coastal ,Habitat-forming species - Abstract
Este artículo contiene 18 páginas, 4 figuras., Climate change is causing an increase in the frequency and intensity of marine heatwaves (MHWs) and mass mortality events (MMEs) of marine organisms are one of their main ecological impacts. Here, we show that during the 2015–2019 period, the Mediterranean Sea has experienced exceptional thermal conditions resulting in the onset of five consecutive years of widespread MMEs across the basin. These MMEs affected thousands of kilometers of coastline from the surface to 45 m, across a range of marine habitats and taxa (50 taxa across 8 phyla). Significant relationships were found between the incidence of MMEs and the heat exposure associated with MHWs observed both at the surface and across depths. Our findings reveal that the Mediterranean Sea is experiencing an acceleration of the ecological impacts of MHWs which poses an unprecedented threat to its ecosystems' health and functioning. Overall, we show that increasing the resolution of empirical observation is critical to enhancing our ability to more effectively understand and manage the consequences of climate change., This paper was supported by Euromarine. Joaquim Garrabou acknowledges the funding by the “Severo Ochoa Centre of Excellence” (CEX2019-000928-S), the MCIU/AEI/FEDER [HEATMED; RTI2018-095346-B-I00], Interreg-Med Programme MPA-Engage (1MED15_3.2_M2_337), the European Union Horizon 2020 research and innovation programme (Futuremares SEP-210597628). Nuria Teixido acknowledges the French National Research Agency (4Oceans-MOPGA grant, ANR-17-MPGA-0001) and internal funds from the Stazione Zoologica Anton Dohrn. Gil Rilov was supported by the Israel Ministry of Environmental Protection. Hocein Bazairi, Free Spinosa, and Vasilis Gerovasileiou acknowledge the funding by the MAVA Fondation (MedKeyHabitats I Project) and the European Commission (Ecap-MED II Project; projects implemented by UNEP/MAP-RAC/SPA). Alfonso Ramos was supported the CIESM “Tropical Signals,” Stelios Katsanevakis and Maria Sini were supported by the Project “Coastal Environment Observatory and Risk Management in Island Regions AEGIS+” (MIS 5047038), implemented within the Operational Programme “Competitiveness, Entrepreneurship and Innovation” (NSRF 2014–2020), co-financed by the Hellenic Government (Ministry of Development and Investments) and the European Union (European Regional Development Fund, Cohesion Fund), Stelios Katsanevakis, Maria Sini and Vasilis Gerovasileiou acknowledge the support of the MARISCA Project, co-funded by 85% by the EEA GRANTS, 2009–2014, and 15% by the Public Investments Programme (PIP) of the Hellenic Republic. Ivan Guala and Daniele Grech thanks thank the support of the project “Pinna nobilis—ricerca per la sopravvivenza: un'iniziativa di Citizen Science per tracciare la mortalità di massa di Pinna nobilis in Sardegna” project and the L/7 grant (CUP 87G17000070002) funded by the Regione Autonoma Sardegna. Jean-Baptiste Ledoux was funded by an assistant researcher contract framework of the RD Unit—UID/Multi/04423/2019—Interdisciplinary Centre of Marine and Environmental Research—financed by the European Regional Development Fund (ERDF) through COMPETE2020—Operational Program for Competitiveness and Internationalization (POCI) and national funds through FCT/MCTES (PIDDAC). This research was supported by the Strategic Funding UIDB/04423/2020 and UIDP/04423/2020 through national funds provided by the FCT—Foundation for Science and Technology and European Regional Development Fund (ERDF), in the framework of the program PT2020. Bernat Hereu and Cristina Linares acknowledge the support of the long-term monitoring programme of the catalan Natural Parks, funded by the Departament de Territori i Sostenibilitat of the Generalitat de Catalunya. Cristina Linares acknowledges the support of the ICREA Academia programme. David Díaz acknowledges the support the research grant CTM2016-77027-R of the Programa Estatal de Investigación, Desarrollo e Innovación Orientada a los Retos de la Sociedad and Program of Marines Strategies of Spain funded by MITERD. Jamila Ben Soussi was partially funded by the Fondation Albert 2 Monaco (MIMOSA Project) and the Tropical Signals Program of CIESM. Giovanni Chimienti was supported by the Italian Ministry of Education, University and Research (PON 2014–2020, AIM 1807508–1, Linea 1), by the Ente Parco Nazionale del Gargano (Research agreement with CoNISMa N. 21/2018), and by the National Geographic Society (Grant EC-176R-18). Nathaniel Bensoussan acknowledges financial support from the European Commission through the programme “Caroline Herschell” in the context of the action “Developing Downstream applications and services on BIO-PHYsical characterization of the seascape for COASTal management” (BIOPHYCOAST). Monica Montefalcone and Annalissa Azzola collected some of their data on MMEs in the frame of the project “Mare Caldo” funded by Greenpeace Italy. Núria Marbà acknowledges financial support from the Spanish Ministries of Economy and Competitiveness (CTM2012-32603, CGL2015-71809-P) and Ministerio de Ciencia, Innovación y Universidades (RTI2018-095441-B-C21). Diego K. Kersting acknowledges support by the postdoctoral fellowship programme Beatriu de Pinós funded by the Secretary of Universities and Research (Government of Catalonia) and the Horizon 2020 programme of research and innovation of the European Union under the Marie Sklodowska-Curie grant agreement No 801370.
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- 2022
7. Dental composites for wide color matching
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Mattia Humbel, Corinne Mattle, Mario Scheel, Ana Diaz, Iwan Jerjen, Robert Lominski, Robert Sterchi, Georg Schulz, Andres Izquierdo, Guido Sigron, Hans Deyhle, and Bert Müller
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- 2022
8. A teratologic spider with duplicated reproductive organs
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Matías Andres Izquierdo
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0106 biological sciences ,Spider ,genetic structures ,biology ,Ontogeny ,010607 zoology ,Zoology ,biology.organism_classification ,010603 evolutionary biology ,01 natural sciences ,Arthropod mouthparts ,Insect Science ,Epigyne ,Amaurobiidae - Abstract
In general, malformations in spiders involve chelicerae, pedipalps, walking legs, and eyes, but those affecting female reproductive structures are not so frequent. A teratological case of a spider with a duplicated reproductive structure is described. The female specimen has the typical epigyne and a second one near the spinnerets. The second epigyne is less developed and seems to be non-functional. Similar malformations have been reported for Amaurobiidae and Salticidae, and here is presented for Gnaphosidae. Although it is widely known that temperature and humidity may induce abnormalities under experimental conditions, the causes behind teratological genitalia in wild females are unknown. This case opens the question of the origin of such a malformation and the ontogeny of female reproductive organs in spiders.
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- 2021
9. Green Synthesis of Metal Nanoparticles with Borojó (Borojoa patinoi) Extracts and Their Application in As Removal in Water Matrix
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Erika Murgueitio Herrera, Gissela Jacome, Carina Stael, Geovanna Arroyo, Andrés Izquierdo, Alexis Debut, Patricio Delgado, and Gemma Montalvo
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arsenic ,nanoparticles ,borojó (Borojoa patinoi) ,Papallacta Lagoon ,Chemistry ,QD1-999 - Abstract
The predominant aim of the current research was to generate a proposal for the removal of arsenic, a highly toxic pollutant, encountered within the Papallacta Lagoon in Ecuador. The average concentrations of As yielded ranges between 18 to 652 μg/L, through the use of metallic nanoparticles. Sampling was performed in the lagoon with their respective geographic locations and “in situ” parameters. Nanoparticles of Mn3O4 NPs, Fe3O4 NPs, and CuO NPs were synthesized at a 0.5 M concentration, using the precipitation method, and borojó (Borojoa patinoi) extract was added as an anti-caking agent as well as antioxidant. The nanoparticles were characterized by visible spectrophotometry, scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and Raman spectroscopy. After arsenic removal treatment using nanoparticles, a randomized experimental design of different concentrations (5 mg/L, 10 mg/L, 25 mg/L, 50 mg/L, 100 mg/L, and 150 mg/L) was applied at laboratory level. The average diameter of Fe3O4NPs ranged from 9 nm to 36 nm, Mn3O4 NPs were 15–20 nm, and CuO NPs ranged from 25 nm to 30 nm. Arsenic removal percentages using Fe3O4 NPs with a concentration of 150 mg/L was 87%; with Mn3O4 NPs, the removal was 70% and CuO NPs of about 63.5%. Finally, these nanoparticles could be used in a water treatment plant for the Papallacta Lagoon.
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- 2024
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10. Taxonomic Revision of the Jumping Goblin Spiders of the GenusOrchestinaSimon, 1882, in the Americas (Araneae: Oonopidae)
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Martín J. Ramírez and Matías Andres Izquierdo
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0106 biological sciences ,Nearctic ,Ecology ,Orchestina ,Otras Ciencias Biológicas ,010607 zoology ,genitalia ,Zoology ,Context (language use) ,Oonopidae ,Biology ,biology.organism_classification ,Neotropical ,010603 evolutionary biology ,01 natural sciences ,Agricultural and Biological Sciences (miscellaneous) ,Ciencias Biológicas ,taxonomy ,Monophyly ,Sister group ,Genus ,Nearctic ecozone ,Taxonomy (biology) ,CIENCIAS NATURALES Y EXACTAS - Abstract
The genus Orchestina Simon is distributed worldwide and is characterized by having an enlarged fourth femur with which these species are capable of jumping. The genus is also characterized by having a well-sclerotized sperm duct, a near H-shaped arrangement of the eye group, a 4-4-3-3 pattern of raised receptors on the tarsal organs of the legs I–IV, respectively, and by lacking spines on all the legs. All these characters, together with molecular evidence, support the monophyly of the genus, as well as its placement as sister group of Oonopinae. Most American species of Orchestina inhabit the forest foliage and canopy, but in unforested areas they also occur in shrubs and grasses. In this work, we revise the American representatives of Orchestina in a comprehensive context for the first time. In the past, six species were known from the Americas: five from the United States and only one from South America, described from Venezuela. After the study of the principal collections of the world and several field trips to several South American countries, we describe 85 new species and redescribe all previously known species. Matching sexes was occasionally problematic; while females are very homogeneous in somatic traits, males may have modifications on different parts of the body, making the matching very difficult. Therefore, in this review 56 of the species are described from only one sex, whereas 20 unmatched species are informally described as morphospecies, pending the discovery of conspecific sexes. Two species, O. pavesiiformis Saaristo and O. dentifera Simon, originally known from Israel and Sri Lanka, respectively, are here reported as introduced in several countries in the Americas and other continents. O. justini Saaristo described from the Seychelles is here considered a synonym of O. dentifera. One species, O. truncata Wunderlich, previously known as a subfossil spider from Colombian Copal is here tentatively redescribed based on recent material from Costa Rica, Colombia, and Ecuador; the female is also described for the first time. The species list by country is as follows (numbers refer to records, independently of the locality of the type material): United States (9 species: O. utahana Chamberlin and Ivie, O. moaba Chamberlin and Ivie, O. obscura Chamberlin and Ivie, O. saltitans Banks, O. nadleri Chickering, the introduced O. pavesiiformis Saaristo, and three new species, O. quasimodo, O. kamehameha, and O. auburndalensis); Mexico (3 species: O. utahana Chamberlin and Ivie, and two new species, O. nahuatl and O. chaparrita); Guatemala (1 new species: O. guatemala); Costa Rica (3 new species: O. laselva, O. griswoldi, and O. chiriqui; and the previously known O. truncata Wunderlich); Panama (5 new species: O. chiriqui, O. labarquei, O. pan, O. campana, and O. galapagos); Jamaica (2 species, the introduced O. dentifera Simon and O. galapagos); Haiti and Dominican Republic (only the introduced O. dentifera Simon); Colombia (6 new species: O. filandia, O. zingara, O. arboleda, O. cali, O. platnicki, O. pakitza; and O. truncata Wunderlich, plus the morphospecies OMI020 and OMI038); Venezuela (7 species: O. saltabunda; and 6 new, O. venezuela, O. aragua, O. bolivar, O. maracay, O. ranchogrande, and O. neblina); Trinidad and Tobago (1 new species: O. kairi); Guyana (1 morphospecies: OMI026); Ecuador (18 new species: O. galapagos, O. fernandina, O. erwini, O. ecuatoriensis, O. sotoi, O. magna, O. shuar, O. golem, O. waorani, O. tzantza, O. predator, O. goblin, O. yanayacu, O. otonga, O. santodomingo, O. quijos, O. mayo, O. laselva, and O. truncata Wunderlich, plus the morphospecies OMI020, OMI021, OMI022, OMI023, OMI024, OMI025, OMI026, OMI027, OMI029, OMI036, and OMI038); Peru (9 new species: O. cajamarca, O. comaina, O. atocongo, O. mancocapac, O. silvae, O. madrededios, O. pakitza, O. losamigos, O. golem, and the morphospecies OMI020, OMI023, OMI026, and OMI030); Brazil (25 new species: O. cristinae, O. coari, O. moura, O. valquiria, O. aproeste, O. caxiuana, O. para, O. taruma, O. retiro, O. divisor, O. juruti, O. platnicki, O. iemanja, O. bonaldoi, O. rapaz, O. itapety, O. catarina, O. leon, O. saudade, O. sarava, O. goblin, O. sotoi, O. golem, O. waorani, O. ucumar, the introduced O. pavesiiformis Saaristo, and O. dentifera Simon, plus the morphospecies OMI021, OMI023, OMI024, OMI025, OMI026, OMI027, OMI029, OMI032, OMI033, OMI034, OMI035, OMI036, OMI037, OMI039, and OMI040); Bolivia (3 new species: O. moyuchi, O. grismadoi, and O. ucumar); Chile (12 new species: O. pandeazucar, O. caleta, O. totoralillo, O. pizarroi, O. molles, O. granizo, O. quenies, O. curico, O. cachai, O. nahuelbuta, O. jaiba, and O. osorno); and Argentina (6 new species: O. ucumar, O. andianavarroi, O. luispi, O. cristinae, O. platnicki, O. jaiba, and the introduced O. pavesiiformis Saaristo). Although the internal relationships of the genus are still not clear, we suggest some groups of species based on morphological characters and geographic distributions. Species from the western United States share the presence of a net-shaped pattern of coloration and, in some species, modifications of carapace or first legs of males. Females of this group are characterized by the presence of a thin, generally long and twisted anterior receptaculum and external pockets on the epigastric region. This group inhabits in a geographic region that remained isolated during the late Cretaceous and is still isolated by geographic and climatic conditions. Species groups in South American members were more difficult to establish, given their wide diversity. However, some species are unique in having internal pockets in female genitalia and apophyses on the male copulatory bulb. The Chilean species are probably a monophyletic group; they are separated from the rest by the combined presence of external pockets and ridges on the epigastric region of female, whereas males are very similar in the morphology of copulatory bulb, which is very simple, with long embolus and sometimes with additional spineshaped apophysis. This group may have experienced events of isolation during and after the elevation of the Andes range. As in other members of the family the genus is interesting for the presence of secondary sexual characters in males whereas females are practically homogenous in somatic characters. However, female genital morphology is variable, which may suggest a coevolution with somatic characters in males and probably mechanical interactions. Although this work reveals the incredible diversity of this genus, many important geographic regions remain undersampled and records for some countries are entirely lacking. Fil: Izquierdo, Matías Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina Fil: Ramirez, Martin Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina
- Published
- 2017
11. Patterns of spatial distribution of Callinectes sapidus in invaded environments of the Valencian coast (Spain)
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Alberto Gil-Fernández, S. Falco, Carmen Barberá, Alfonso A. Ramos-Esplá, Vicente Mocholí, M. Rodilla, and Andres Izquierdo
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Global and Planetary Change ,Callinectes ,biology ,Ocean Engineering ,Aquatic Science ,Oceanography ,Spatial distribution ,biology.organism_classification ,Valencian ,language.human_language ,Fishery ,Geography ,language ,Water Science and Technology - Published
- 2019
12. A new species of the genus Epicratinus Jocqué & Baert of Bolivia (Araneae: Zodariidae)
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Cristian J. Grismado and Matías Andres Izquierdo
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Paleontology ,Animal Science and Zoology ,Ecology, Evolution, Behavior and Systematics - Abstract
Una nueva especie del genero neotropical de zodaridos Epicratinus Jocque & Baert, 2005, E. santacruz , es descrita para el Departamento de Santa Cruz, Bolivia. Esta es la quinta especie descrita en el genero, y la primera zodarida conocida para Bolivia.
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- 2016
13. Can we save a marine species affected by a highly infective, highly lethal, waterborne disease from extinction?
- Author
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Claire Peyran, M. Guimerans, Salud Deudero, J. Bernal, Francisca Gimenez-Casalduero, José Tena, Aurelio Ortega, E. Nebot-Colomer, Jesús M. Torres, Amalia Grau, M. López-Sanmartín, Jordi Sánchez, Santiago Jiménez, J.L. Crespo, Andres Izquierdo, José María Valencia, Serge Planes, Diego Moreno, Javier Navas, Diego K. Kersting, T. Morage, S. Henandis, M. Pérez, Gaetano Catanese, Neus Sanmartí, Nardo Vicente, Maite Vázquez-Luis, Elvira Álvarez, Agustín Barrajón, José Rafael García-March, D. López, Iris E. Hendriks, Patricia Prado, C. Téllez, Producció Animal, Aigües Marines i Continentals, Universidad Catolica de Valencia (UCV), University of Sassari, Centro de Investigación Marina de Santa Pola (CIMAR), Ayto. de Santa Pola y Universidad de Alicante, IRTA-Aquatic Ecosystems, I.F.A.P.A. Centro 'Agua del Pino', Consejería de Agricultura y Pesca, AUTRES, Instituto Español de Oceanografía (IEO), Málaga., Biologie et écologie tropicale et méditerranéenne [2007-2010] (BETM), Université de Perpignan Via Domitia (UPVD)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Freie Universität Berlin, Universidad Complutense de Madrid = Complutense University of Madrid [Madrid] (UCM), Institut Mediterrani d'Estudis Avancats (IMEDEA), Consejo Superior de Investigaciones Científicas [Madrid] (CSIC)-Universidad de las Islas Baleares (UIB), Agencia del Medio Ambiente y Agua de Andalucía, Department of Marine Sciences and Applied Biology, Hereditary Cancer Program, Institut Català d'Oncologia, Girona Biomedical Research Institute, Josep Trueta University Hospital, Institut Européen des membranes (IEM), Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Université Montpellier 2 - Sciences et Techniques (UM2)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM), Institut méditerranéen de biodiversité et d'écologie marine et continentale (IMBE), Avignon Université (AU)-Aix Marseille Université (AMU)-Institut de recherche pour le développement [IRD] : UMR237-Centre National de la Recherche Scientifique (CNRS), University of Barcelona, Fundación Oceanográfic de la Comunitat Valenciana [Spain], Junta de Andalucia, Université de Perpignan Via Domitia (UPVD), Universidad Catolica de Valencia, Laboratoire de Mecanique des Fluides et d'Acoustique (LMFA), École Centrale de Lyon (ECL), Université de Lyon-Université de Lyon-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Aquatic Ecosystems, Institut de Recerca i Tecnologia Agroalimentaries, PSL Research University: EPHE-UPVD-CNRS, USR 3278 CRIOBE, Université de Perpignan, 52 Avenue Paul Alduy, 66860 Perpignan Cedex, France, Centre de recherches insulaires et observatoire de l'environnement (CRIOBE), Università degli Studi di Sassari = University of Sassari [Sassari] (UNISS), Université de Perpignan Via Domitia (UPVD)-École Pratique des Hautes Études (EPHE), Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Universidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicada, Biología Marina, Ministerio de Transición Ecológica (España), Fondation Prince Albert II de Monaco, Ministerio de Economía y Competitividad (España), CSIC - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA), Université Montpellier 2 - Sciences et Techniques (UM2)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut de recherche pour le développement [IRD] : UMR237-Aix Marseille Université (AMU)-Avignon Université (AU)
- Subjects
0106 biological sciences ,Sentinel species ,Population ,Biology ,010603 evolutionary biology ,01 natural sciences ,Pinna nobilis ,Mass mortality ,Haplosporidium pinnae ,medicine ,Zoología ,Marine ecosystem ,14. Life underwater ,Keystone species ,education ,ComputingMilieux_MISCELLANEOUS ,Ecology, Evolution, Behavior and Systematics ,Nature and Landscape Conservation ,education.field_of_study ,Extinction ,Ecology ,010604 marine biology & hydrobiology ,fungi ,Global warming ,Waterborne diseases ,biology.organism_classification ,medicine.disease ,Parasite ,Mediterranean endemism ,13. Climate action ,[SDE]Environmental Sciences ,Protozoan ,[SDE.BE]Environmental Sciences/Biodiversity and Ecology - Abstract
Anthropogenic drivers and global warming are altering the occurrence of infectious marine diseases, some of which produce mass mortalities with considerable ecosystemic and economic costs. The Mediterranean Sea is considered a laboratory to examine global processes, and the fan mussel Pinna nobilis a sentinel species within it. Since September 2016, fan mussels suffer a die-off, very likely provoked by the protozoan Haplosporidium pinnae. Population dynamic surveys, rescue programmes, larvae collector installation and protection of infected adults from predators, have increased knowledge about the factors conditioning the spread of the die-off; previous model simulations indicate that water temperature and salinity seem to be related to the manifestation of the disease, which at the end are strongly influenced by climate change and anthropogenic actions. The absence of natural recruitment implies that fan mussel populations are not recovering, but the survival of populations living in paralic environments provides an opportunity to study the disease and its conditioning factors. The fan mussel disease outbreak provides a case example for how climate change may mediate host-protozoan dynamics and poses several questions: are we witnessing the potential extinction of a sentinel species? Can we avoid it by applying active measures? If so, which measures will be more effective? How many other more overlooked species might experience a massive and unnoticed die-off before it is too late to implement any preservation action? This is especially relevant because the loss of keystone species can drive to community effects that influence marine ecosystem processes., This research was partially funded by the Spanish Ministry for the Ecological Transition, project 28-5310 “Rescate de 215 ejemplares de nacra (Pinna nobilis) y su mantenimiento en 5 centros especializados en el marco del Proyecto UFE IP-PAF INTEMARES (LIFE15 IPE ES 012)”, “Gestión integrada, innovadora y participativa de la Red Natura 2000 en el medio marino español” as well as those agreements and contracts with the participating entities (IFAPA, IRTA, IEO) derived from this project, and by the Prince Albert II of Monaco Foundation to project BF/HEM 15-1662, “The study, protection and possible breeding of pen shell (Pinna nobilis) in the Boka Kotorska Bay”. Maite Vázquez-Luis was supported by the postdoctoral contract, Juan de la Cierva-Incorporación (IJCI-2016-29329) of Ministerio de Ciencia, Innovación y Universidades. G. Catanese was supported by a research contract from the INIA-CCAA (DOC INIA 8/2013) MINECO programme. The M. López-Sanmartín contract is co-financed by the State Plan for Scientific and Technical Research and Innovation 2013–2016, MINECO, ref. PTA215-11709-I.
- Published
- 2020
14. Sexual Selection in Neotropical Spiders: Examples from Selected Groups
- Author
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Maria J. Albo, Nelson Edgardo Ferretti, Lucia Calbacho-Rosa, Franco Cargnelutti, Fedra Bollatti, Luiz Ernesto Costa-Schmidt, Matías Andres Izquierdo, Alfredo V. Peretti, and Sofía Copperi
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0106 biological sciences ,0301 basic medicine ,Biology ,010603 evolutionary biology ,01 natural sciences ,Sexual dimorphism ,03 medical and health sciences ,030104 developmental biology ,Female sperm storage ,Mate choice ,Evolutionary biology ,Sexual selection ,Sexual cannibalism ,Mating ,Sperm competition ,Selection (genetic algorithm) - Abstract
Spiders have long been noted as classic examples of sexual behavior among arachnids, including extreme sexual dimorphism in some groups, and behavioral adaptations to diverse mating patterns. In recent decades, studies on the biology of Neotropical spiders have offered novel information on processes related to reproductive biology, including sexual selection. The present chapter synthesizes the large amount of knowledge on sexual selection and associated subjects in spiders from the Neotropics. Some of the groups considered in this review are mygalomorphs, lycosids and related, orb-weaving species, tetragnathids, social species, pholcids, and oonopids, among others. Concepts, patterns, mechanisms, and prospects on different areas of sexual selection are shown in detail for all these groups. In particular, here we highlight selected examples of the different contexts in which male–female interactions occur, such as mate choice, sexual cannibalism, sperm competition, and cryptic female choice. We outline the potential evolutionary consequences according to those contexts, with a final selection of model groups for specific experimental and comparative investigations.
- Published
- 2017
15. Biodiversity and threats in non-protected areas: A multidisciplinary and multi-taxa approach focused on the Atlantic Forest
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Jorge Alejandro Palermo, Belen Bukowski, Pablo L. Tubaro, Andrés O. Porta, Emanuel Grassi, Dario A Lijtmaer, Ezequiel O. Núñez Bustos, Ezequiel Mabragaña, Esteban Avigliano, Luis N. Piacentini, Gonzalo Matías Romano, Paola Mariana Ondarza, Matías Andres Izquierdo, Nahuel Francisco Schenone, Adriana M. Cirigliano, and Juan José Rosso
- Subjects
0301 basic medicine ,Monitoring ,Fauna ,CONSERVATION ,Biome ,Biodiversity ,Conservation ,Rainforest ,ECOLOGY ,Article ,Malaise trap ,purl.org/becyt/ford/1 [https] ,purl.org/becyt/ford/1.5 [https] ,03 medical and health sciences ,0302 clinical medicine ,Hotspot ,PESTICIDES ,LEGAL PROTECTION ,Vulnerable species ,Pesticides ,lcsh:Social sciences (General) ,MONITORING ,lcsh:Science (General) ,Multidisciplinary ,Ecology ,Agrochemical ,ENVIRONMENTAL SCIENCES ,HOTSPOT ,Biodiversity hotspot ,Environmental sciences ,AGROCHEMICAL ,030104 developmental biology ,Taxon ,Legal protection ,lcsh:H1-99 ,030217 neurology & neurosurgery ,lcsh:Q1-390 - Abstract
Along many decades, protected environments were targeted by the scientific community for ecological research and for the collection of scientific information related to environmental aspects and biodiversity. However, most of the territory in hotspot regions with weak or even non legal protection has been left aside. These non-protected areas (NPA) could host high biodiversity values. This paper addresses how scientific effort on a NPA (CIAR) of 700 ha from the Atlantic Rain Forest, generates new information and tools for large-scale environmental and biodiversity management in NPAs. Information published during the last decade was summarized and complemented with subsequent novel data about biodiversity (new species, first records, DNA and chemical analyses, etc.). The results showed: 1 new genus (arachnid), 6 new species and several putative new species (fish and arthropod), 6 vulnerable species (bird and mammal) and 36 first records for Argentina (fish, arthropod, platyhelminth and fungi). When compared with protected natural areas of the same biome, the CIAR showed highly valuable aspects for fauna and environment conservation, positioning this NPA as a worldwide hotspot for some taxa. Indeed, when compared to international hotspots in a coordinated Malaise trap program, the CIAR showed 8,651 different barcode index numbers (∼species) of arthropods, 80% of which had not been previously barcoded. Molecules like Inoscavin A, with antifungal activity against phytopathogens, was isolated for the first time in Phellinus merrillii fungi. The study of major threats derived from anthropic activities measured 20 trace elements, 18 pesticides (i.e. endosulfans, chlorpyrifos, DDTs, HCHs) and 27 pharmaceuticals and drugs (i.e. benzoylecgonine and norfluoxetine) in different biotic and abiotic matrices (water, sediment, fish and air biomonitors). This integrated data analysis shows that biodiversity research in NPA is being undervalued and how multidisciplinary and multi-taxa surveys creates a new arena for research and a pathway towards sustainable development in emerging countries with biodiversity hotspots. Fil: Avigliano, Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Unidad Ejecutora de Investigaciones en Producción Animal. Universidad de Buenos Aires. Facultad de Ciencias Veterinarias. Unidad Ejecutora de Investigaciones en Producción Animal; Argentina. Fundacion Bosques Nativos Argentinos Para la Biodiversidad.; Argentina Fil: Rosso, Juan Jose. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina Fil: Lijtmaer, Dario Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina Fil: Ondarza, Paola Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina Fil: Piacentini, Luis Norberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Pque. Centenario. Museo Argentino de Ciencias Naturales "bernardino Rivadavia". Departamento de Invertebrados; Argentina Fil: Izquierdo, Matías Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Diversidad y Ecología Animal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Diversidad y Ecología Animal; Argentina Fil: Cirigliano, Andrea. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina Fil: Romano, Gonzalo Matías. Universidad Nacional de la Patagonia "San Juan Bosco"; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina Fil: Núñez Bustos, Ezequiel Osvaldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Pque. Centenario. Museo Argentino de Ciencias Naturales "bernardino Rivadavia". Departamento de Invertebrados; Argentina Fil: Porta, Andres. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina Fil: Mabragaña, Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Marinas y Costeras; Argentina Fil: Grassi, Emanuel Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis. Universidad Nacional de San Luis. Facultad de Ciencias Físico Matemáticas y Naturales. Instituto Multidisciplinario de Investigaciones Biológicas de San Luis; Argentina Fil: Palermo, Jorge Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Unidad de Microanálisis y Métodos Físicos en Química Orgánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Unidad de Microanálisis y Métodos Físicos en Química Orgánica; Argentina Fil: Bukowski Loináz, María Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina Fil: Tubaro, Pablo Luis. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina Fil: Schenone, Nahuel Francisco. Fundacion Bosques Nativos Argentinos Para la Biodiversidad.; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Nordeste. Centro de Ecología Aplicada del Litoral. Universidad Nacional del Nordeste. Centro de Ecología Aplicada del Litoral; Argentina
- Published
- 2019
16. Does an intracanal composite anchorage replace posts?
- Author
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Nicola U. Zitzmann, Marc Schmitter, Roland Weiger, Leonard Büttel, Andres Izquierdo, and Gabriel Krastl
- Subjects
Materials science ,business.industry ,Resin composite ,Glass fiber ,Composite number ,chemistry.chemical_element ,Dentistry ,Ferrule ,Composite Resins ,Tooth Fractures ,stomatognathic system ,chemistry ,Fracture (geology) ,Humans ,Adhesive ,Dental Pulp Cavity ,business ,General Dentistry ,Zinc Phosphate Cement ,Post and Core Technique ,Titanium - Abstract
Objectives: This study aims to assess the effectiveness of an intracanal composite anchorage to replace conventionally cemented titanium or bonded glass fibre posts. Materials and methods: Post space preparation was performed up to depths of 6mm (groups 1 and 2) and 3mm (group 3) in root filled mandibular premolars. In group 1, titanium posts were cemented with zinc phosphate cement. Glass fibre posts were adhesively cemented in group 2 using a dual-cure composite resin. In group 3, intracanal anchorage was solely performed with a dual-cure composite. All teeth were restored with standardised direct composite crowns without a ferrule. After thermo-mechanical loading, static load was applied until failure. Fracture patterns were assessed, and a microscopic analysis was performed to analyse the occurrence of additional cracks. Results: Group 2 revealed a significantly higher median fracture value (408N) than groups 1 and 3, while no difference was detected between group 1 (290N) and group 3 (234N) (p = .1417). In group 3, the more favourable fracture patterns were observed. However, the majority of teeth within this fracture category revealed additional minor cracks of the root. Conclusions: Within the limitations of this study, adhesive intracanal anchorage to a depth of 3mm with resin composite only has the same fracture resistance as titanium posts conventionally cemented to a depth of 6mm. Even teeth with repairable main fractures exhibited additional dentinal cracks on the root. Clinical relevance: Additional dentinal root cracks in the teeth with repairable main fractures may considerably impair their longevity.
- Published
- 2013
17. Microcosmus exasperatus (Ascidiacea: Pyuridae), current distribution in the Mediterranean Sea
- Author
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Andres Izquierdo, Melih Ertan Çinar, Alfonso A. Ramos-Esplá, Biología Marina, and Universidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicada
- Subjects
Pyuridae ,Ascidians ,Ecology ,biology ,Current distribution ,Alien species ,Aquatic Science ,Oceanography ,biology.organism_classification ,Fishery ,Mediterranean sea ,Geography ,Microcosmus spp ,Aegean Sea ,Lessepsian migrants ,Mediterranean Sea ,Zoología ,Microcosmus exasperatus ,Ecology, Evolution, Behavior and Systematics ,Ascidiacea - Abstract
The presence of the pantropical ascidian Microcosmus exasperatus has been an object of some taxonomic confusion in the Mediterranean Sea. A closely related species, M. squamiger was previously reported in the north of Tunisia (in 1962) as M. exasperatus; it has spread to the western Mediterranean and the northern part of the Ionian Sea, whereas, the reliable report of M. exasperatus has been made more recently (in 1998) in the Gulf of Gabès (South Tunisia), and later studies have confirmed its presence in the eastern Mediterranean basin (Lebanon and Israel). The occurrence of this species in Izmir (Turkey) extends its distribution range to the Aegean Sea. At present, the distributions of both species of Microcosmus are not overlapping in the Mediterranean, suggesting a different route of entrance, probably by the maritime traffic (M. squamiger via the Strait of Gibraltar; and M. exasperatus via the Suez Canal). The discontinuity in the distribution of M. exasperatus in the Mediterranean is analysed and discussed. This work was partly supported by the Scientific Research Projects of Ege University (Project number: 03 SUF 005).
- Published
- 2013
18. Identification of the South Atlantic spiny slipper limpet Bostrycapulus odites Collin, 2005 (Caenogastropoda: Calyptraeidae) on the Spanish Mediterranean coast
- Author
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Rachel Collin, Alfonso A. Ramos-Esplá, Andres Izquierdo, Biología Marina, and Universidad de Alicante. Departamento de Ciencias del Mar y Biología Aplicada
- Subjects
Mediterranean climate ,Western Mediterranean ,Crepidula ,Caenogastropoda ,biology ,Limpet ,Bostrycapulus aculeatus ,Exotic species ,Introduced species ,Aquatic Science ,biology.organism_classification ,Fishery ,COI ,Calyptraeidae ,Identification (biology) ,Zoología ,Water Science and Technology ,Barcode - Abstract
Calyptraeid gastropods are common fouling organisms in some areas, and have been introduced frequently into bays and ports in the northern hemisphere. In some cases, introduced calyptraeids have spread extensively, while several other calyptraeid introductions have persisted but failed to expand geographically. Calyptraeid species are often difficult to identify to species making it difficult to identify the origin of many introductions. Here we use DNA sequence data to confirm that a Mediterranean population of the spiny slipper snail Bostrycapulus, previously referred to as B. aculeatus and B. calyptraeformis, is in fact B. odites from the South Atlantic, and that this population probably originated in South America.
- Published
- 2010
19. Clustered Formation of Massive Stars within an Ionized Rotating Disk
- Author
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Roberto Galván-Madrid, Qizhou Zhang, Andrés Izquierdo, Charles J. Law, Thomas Peters, Eric Keto, Hauyu Baobab Liu, Paul T. P. Ho, Adam Ginsburg, and Carlos Carrasco-González
- Subjects
H II regions ,Astrophysics ,QB460-466 - Abstract
We present Atacama Large Millimeter/submillimeter Array observations with a 800 au resolution and radiative-transfer modeling of the inner part ( r ≈ 6000 au) of the ionized accretion flow around a compact star cluster in formation at the center of the luminous ultracompact H ii region G10.6-0.4. We modeled the flow with an ionized Keplerian disk with and without radial motions in its outer part, or with an external Ulrich envelope. The Markov Chain Monte Carlo fits to the data give total stellar masses M _⋆ from 120 to 200 M _⊙ , with much smaller ionized-gas masses M _ion-gas = 0.2–0.25 M _⊙ . The stellar mass is distributed within the gravitational radius R _g ≈ 1000 to 1500 au, where the ionized gas is bound. The viewing inclination angle from the face-on orientation is i = 49°–56°. Radial motions at radii r > R _g converge to v _r _,0 ≈ 8.7 km s ^−1 , or about the speed of sound of ionized gas, indicating that this gas is marginally unbound at most. From additional constraints on the ionizing-photon rate and far-IR luminosity of the region, we conclude that the stellar cluster consists of a few massive stars with M _star = 32–60 M _⊙ , or one star in this range of masses accompanied by a population of lower-mass stars. Any active accretion of ionized gas onto the massive (proto)stars is residual. The inferred cluster density is very large, comparable to that reported at similar scales in the Galactic center. Stellar interactions are likely to occur within the next million years.
- Published
- 2022
- Full Text
- View/download PDF
20. MagAO-X and HST High-contrast Imaging of the AS209 Disk at Hα
- Author
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Gabriele Cugno, Yifan Zhou, Thanawuth Thanathibodee, Per Calissendorff, Michael R. Meyer, Suzan Edwards, Jaehan Bae, Myriam Benisty, Edwin Bergin, Matthew De Furio, Stefano Facchini, Jared R. Males, Laird M. Close, Richard D. Teague, Olivier Guyon, Sebastiaan Y. Haffert, Alexander D. Hedglen, Maggie Kautz, Andrés Izquierdo, Joseph D. Long, Jennifer Lumbres, Avalon L. McLeod, Logan A. Pearce, Lauren Schatz, and Kyle Van Gorkom
- Subjects
Exoplanet formation ,Exoplanet detection methods ,Direct imaging ,Exoplanet astronomy ,Astronomy ,QB1-991 - Abstract
The detection of emission lines associated with accretion processes is a direct method for studying how and where gas giant planets form, how young planets interact with their natal protoplanetary disk, and how volatile delivery to their atmosphere takes place. H α ( λ = 0.656 μ m) is expected to be the strongest accretion line observable from the ground with adaptive optics systems, and is therefore the target of specific high-contrast imaging campaigns. We present MagAO-X and Hubble Space Telescope (HST) data obtained to search for H α emission from the previously detected protoplanet candidate orbiting AS209, identified through Atacama Large Millimeter/submillimeter Array observations. No signal was detected at the location of the candidate, and we provide limits on its accretion. Our data would have detected an H α emission with F _H _α > 2.5 ± 0.3 × 10 ^−16 erg s ^−1 cm ^−2 , a factor 6.5 lower than the HST flux measured for PDS70 b. The flux limit indicates that if the protoplanet is currently accreting it is likely that local extinction from circumstellar and circumplanetary material strongly attenuates its emission at optical wavelengths. In addition, the data reveal the first image of the jet north of the star as expected from previous detections of forbidden lines. Finally, this work demonstrates that current ground-based observations with extreme adaptive optics systems can be more sensitive than space-based observations, paving the way to the hunt for small planets in reflected light with extremely large telescopes.
- Published
- 2023
- Full Text
- View/download PDF
21. Turkish Journal of Fisheries and Aquatic Sciences
- Author
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Cihangir, Herdem Aslan, primary, Munoz, Andres Izquierdo, additional, Papadopoulou, Maria A. Pancucci, additional, Espla, A.Alfonso Ramos, additional, and Yilmaz, Elif Can, additional
- Published
- 2011
- Full Text
- View/download PDF
22. Spatial and Temporal Variability of Posidonia oceanica Monitoring Indicators, Valencian Community, Spain
- Author
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Yolanda Fernández-Torquemada, Marta Díaz-Valdés, Andrés Izquierdo-Muñoz, José Luis Sánchez-Lizaso, and Alfonso A. Ramos-Esplá
- Subjects
Posidonia oceanica ,indicators ,monitoring ,Water Framework Directive ,Hydraulic engineering ,TC1-978 ,Water supply for domestic and industrial purposes ,TD201-500 - Abstract
This article presents the results from the long-term Water Framework Directive monitoring of Posidonia oceanica in the Valencian Community, Spain. A total of six areas where Posidonia occurs were studied. Locations were characterized by a different ecological condition: degraded Posidonia meadows; meadows in good conditions; meadows close to the best reference conditions. The spatiotemporal variability of different indicators were sampled from 2005 to 2017. Lower quality meadows are characterized by a lower density and coverage of Posidonia, a higher proportion of dead Posidonia, a higher proportion of plagiotropic rhizomes, smaller shoots, and higher epiphyte biomass, as well as the presence of foliar necrosis marks. For all study sites, the temporal trends indicated a decrease in the quality of the meadows from 2005 to 2011 and a recovery from 2012 to 2017. Some variability observed in the indicators such as P. oceanica cover in patchy meadows, could not be explained by changes in the meadow health.
- Published
- 2020
- Full Text
- View/download PDF
23. Green Synthesis of Iron Nanoparticles: Application on the Removal of Petroleum Oil from Contaminated Water and Soils
- Author
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Erika Murgueitio, Luis Cumbal, Mayra Abril, Andrés Izquierdo, Alexis Debut, and Oscar Tinoco
- Subjects
Technology (General) ,T1-995 - Abstract
Iron nanoparticles were produced using the extract of mortiño berry (Vaccinium floribundum) (vZVI) as reducing and stabilizer agent. Fresh nanoparticles were characterized using TEM, XRD, and FTIR techniques, while laboratory experiments were conducted to assess the removal of total petroleum hydrocarbons (TPHs) from water and soil after treatment with synthesized nanoscale iron particles. Nanoparticles as produced were spherical in the range of 5–10 nm. After treatment with vZVI nanoparticles, water contaminated with two concentrations of TPHs (9.32 mg/L and 94.20 mg/L) showed removals of 85.94% and 88.34%, respectively, whereas a contaminated soil with a TPHs concentration of 5000 mg/kg treated during 32 h with nanoparticles reached a removal of 81.90%. Results indicate that the addition of vZVI nanoparticles produced strong reducing conditions, which accelerate removal of TPHs and suggest that these nanoparticles might be a promising technology to clean up TPHs contaminated water and soils.
- Published
- 2018
- Full Text
- View/download PDF
24. Los puertos seguros para los intermediarios de internet
- Author
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Andrés Izquierdo
- Subjects
Education ,Social sciences (General) ,H1-99 - Abstract
La observancia del derecho de autor es una prioridad en la agenda internacional, pues existe una búsqueda que pretende sustituir las ac- tuales limitaciones de las leyes vigentes a in de responder a los desafíos de las nuevas tecnologías de la información y la comunicación (TIC). El presente artículo realiza un acercamiento comparado a la legislación concebida para la protección y observancia del derecho de autor en internet de países como Estados Unidos y de la Unión Europea, en re- lación con la responsabilidad de los intermediarios de internet frente a los contenidos infractores que puedan transitar o alojar en sus sistemas. Se hará un especial énfasis en la legislación actual relativa a los puertos seguros – safe harbours –, en la jurisprudencia que ha tratado de modelar este comportamiento y en los nuevos estatutos que se han generado como respuesta a una búsqueda de mayor protección y observancia del derecho de autor en internet.
- Published
- 2012
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