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113 results on '"Serena, Fabrizio"'

104. Occurrence of juveniles Squatina oculata Bonaparte, 1840 (Elasmobranchii: Squatinidae) in the Strait of Sicily (Central Mediterranean).

Author

ZAVA, Bruno, FIORENTINO, Fabio, and SERENA, Fabrizio

Subjects
SQUATINIDAE, CHONDRICHTHYES, GIANT stargazer, FISH conservation, RARE fishes
Abstract

Copyright of Cybium: International Journal of Ichthyology is the property of Societe Francaise d'Ichtyologie (SFI) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Author-supplied Abstracts.)

Published
2016

105. Do natural mortality and availability decline with age? An alternative yield paradigm for juvenile fisheries, illustrated by the hake Merluccius merlucciusfishery in the Mediterranean

Author

Abella, Alvaro J., Caddy, John F., and Serena, Fabrizio

Abstract

The paper explores the apparent contradiction between a high trawling pressure on juveniles and sustained production of hake that has occurred over the last decade in many Mediterranean fisheries. The practical consequences are followed of assuming rapid declines in natural mortality rate M in the first few years of life to a low, constant adult natural mortality, as well as the observation, for small-mesh trawl cod ends, of declining availability with age. Several approaches are proposed for fitting declining M-with-age with a reciprocal function for hake, using criteria based on mean life-time fecundity, mean age at egg production, existing estimates of adult M, and vectors based on stock productivity assumptions. All vectors of M-at-age were similar to MSVPA estimates of North Sea stocks.

Published
1997
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106. Occurrence of juveniles Squatina oculata Bonaparte, 1840 (Elasmobranchii: Squatinidae) in the Strait of Sicily (Central Mediterranean)

Author

Zava, Bruno, FABIO FIORENTINO1, and Serena, Fabrizio

Abstract

Four juveniles of Squatina oculata, ranging between 291 and 564 mm total length, were caught on September 2007 by a bottom trawler in the coastal waters of the Strait of Sicily. Due to the rarity of such species, main biometrics are given. The size of the specimens suggests that all fish are juveniles, with one of them having size close to that at birth. These findings suggested that this “critically endangered” species is still able to reproduce off the southern coast of Sicily.

109. A new record of a great white shark, Carcharodon carcharias (Chondrichthyes: Lamnidae) in the Strait of Sicily, Central Mediterranean Sea.

Author

SCANNELLA, Danilo, GERACI, Michele Luca, FALSONE, Fabio, COLLOCA, Francesco, ZAVA, Bruno, SERENA, Fabrizio, Di MAIO, Federico, and VITALE, Sergio

Subjects
*WHITE shark, *CHONDRICHTHYES, *STRAITS, *WILDLIFE conservation
Abstract

In November 2015 an immature male individual of great white shark, Carcharodon carcharias (Linnaeus 1758), was caught as by-catch by a bottom trawler in the Strait of Sicily, in the Central Mediterranean Sea. The shark, reaching 266 cm in length and weighing 290 Kg, was identified and measured by means of a video provided by fishers. This record is discussed considering the available information on the presence of the great white shark in the area and confirms the importance of the Strait of Sicily for the conservation of this vulnerable species. [ABSTRACT FROM AUTHOR]

Published
2020

110. Call me by my name: unravelling the taxonomy of the gulper shark genus Centrophorus in the Mediterranean Sea through an integrated taxonomic approach

Author

Andrea Bellodi, Anna Benvenuto, Riccardo Melis, Antonello Mulas, Monica Barone, Claudio Barría, Alessia Cariani, Laura Carugati, Archontia Chatzispyrou, Monique Desrochers, Alice Ferrari, Javier Guallart, Farid Hemida, Cecilia Mancusi, Carlotta Mazzoldi, Sergio Ramírez-Amaro, Javier Rey, Danilo Scannella, Fabrizio Serena, Fausto Tinti, Adriana Vella, Maria Cristina Follesa, Rita Cannas, Università di Bologna, European Commission, Università di Cagliari, Ministero dell'Istruzione, dell'Università e della Ricerca, Agencia Estatal de Investigación (España), Bellodi, Andrea, Benvenuto, Anna, Melis, Riccardo, Mulas, Antonello, Barone, Monica, Barría, Claudio, Cariani, Alessia, Carugati, Laura, Chatzispyrou, Archontia, Desrochers, Monique, Ferrari, Alice, Guallart, Javier, Hemida, Farid, Mancusi, Cecilia, Mazzoldi, Carlotta, Ramírez-Amaro, Sergio, Rey, Javier, Scannella, Danilo, Serena, Fabrizio, Tinti, Fausto, Vella, Adriana, Follesa, Maria Cristina, and Cannas, Rita

Subjects
fish, shark fins, Fisheries, Squaliformes, Biodiversity, phylogeny, deep sea, fisheries, phylogeny, shark fins, Squaliformes, Deep sea, Deep Sea, elasmobranchs, Centro Oceanográfico de Baleares, taxonomy, fisheries, Shark fins, rights, Animal Science and Zoology, Pesquerías, deep sea – fisheries – phylogeny – shark fins – Squaliformes, squaliformes, Ecology, Evolution, Behavior and Systematics, Phylogeny, agriculture
Abstract

26 pages, 8 figures, 2 tables, supporting information https://doi.org/10.1093/zoolinnean/zlab110.-- Data availability: Sequences and data on specimens are available on GenBank and Bold databases, as specified in the main text, The current shift of fishery efforts towards the deep sea is raising concern about the vulnerability of deep-water sharks, which are often poorly studied and characterized by problematic taxonomy. For instance, in the Mediterranean Sea the taxonomy of genus Centrophorus has not been clearly unravelled yet. Since proper identification of the species is fundamental for their correct assessment and management, this study aims at clarifying the taxonomy of this genus in the Mediterranean Basin through an integrated taxonomic approach. We analysed a total of 281 gulper sharks (Centrophorus spp.) collected from various Mediterranean, Atlantic and Indian Ocean waters. Molecular data obtained from cytochrome c oxidase subunit I (COI), 16S ribosomal RNA (16S), NADH dehydrogenase subunit 2 (ND2) and a portion of a nuclear 28S ribosomal DNA gene region (28S) have highlighted the presence of a unique mitochondrial clade in the Mediterranean Sea. The morphometric results confirmed these findings, supporting the presence of a unique and distinct morphological group comprising all Mediterranean individuals. The data strongly indicate the occurrence of a single Centrophorus species in the Mediterranean, ascribable to C. cf. uyato, and suggest the need for a revision of the systematics of the genus in the area, This research was partially funded by the University of Bologna through ‘RFO’ and ‘Canziani’ grants given to FT and AC and by the European Commission Directorate – General Fisheries in the framework of the MEDITS survey. RM and LC acknowledge the support for their research grants to funds granted by the Università degli Studi di Cagliari ‘UNICA-RICCAR_2013_CAU_02’ and Ministero dell’Università e della Ricerca ‘PON AIM 1854833 - PON Ricerca e Innovazione 2014-2020 – Azione I.2 - D.D. n. 407, 27/02/2018 – Attraction and International Mobility’, respectivel, With the institutional support of the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S)

Published
2022

111. Improving the conservation of Mediterranean Chondrichthyans : the ELASMOMED DNA barcode reference library

Author

Alessandro Cau, Fabrizio Serena, Rita Cannas, Omar Kada, Marco Arculeo, Germana Garofalo, Fabio Fiorentino, Sabrina Lo Brutto, Leanne Bonnici, Farid Hemida, Daniel Golani, Alice Ferrari, Fausto Tinti, Marco Stagioni, Robert Hanner, Letizia Sion, Cecilia Mancusi, Silvia Messinetti, Charis Charilaou, Alessia Cariani, Ilaria Guarniero, Maria Cristina Follesa, Patrick J. Schembri, Angelo Tursi, Juan José Bonello, Pierluigi Carbonara, Najib El Ouamari, Gabriel Morey, Dirk Steinke, Nedo Vrgoč, Cariani, Alessia, Messinetti, Silvia, Ferrari, Alice, Arculeo, Marco, Bonello, Juan J., Bonnici, Leanne, Cannas, Rita, Carbonara, Pierluigi, Cau, Alessandro, Charilaou, Chari, El Ouamari, Najib, Fiorentino, Fabio, Follesa, Maria Cristina, Garofalo, Germana, Golani, Daniel, Guarniero, Ilaria, Hanner, Robert, Hemida, Farid, Kada, Omar, Lo Brutto, Sabrina, Mancusi, Cecilia, Morey, Gabriel, Schembri, Patrick J., Serena, Fabrizio, Sion, Letizia, Stagioni, Marco, Tursi, Angelo, Vrgoc, Nedo, Steinke, Dirk, Tinti, Fausto, Cariani, A, Messinetti S, Ferrari, A, Arculeo, M, Bonello, JJ, Bonnici, L, Cannas, R, Carbonara, P, Cau, A, Charilaou,C, El Ouamari, N, Fiorentino, F, Follesa, MC, Garofalo, G, Golani, D, Guarniero, I, Hanner, R, Hemida, F, Kada, O, Lo Brutto, S, Mancusi, C, Morey, G, Schembri, PJ, Serena, F, Sion, L, Stagioni, M, Tursi, A, Vrgoc, N, Steinke, D, and Tinti, F

Subjects
0106 biological sciences, Heredity, Molecular biology, Speciation, Biodiversity, Settore BIO/05 - Zoologia, lcsh:Medicine, Juvenile, Evolutionary biology, Barcode, Biochemistry, 01 natural sciences, DNA barcoding, law.invention, law, DNA libraries, lcsh:Science, Chondrichthyes, Specimens Identification, Data Management, Molecular systematics, Multidisciplinary, Geography, Mediterranean Region, Ecology, Cryptic speciation, Fishes, Morphological stasi, Mitochondrial DNA, Nucleic acids, Genetic Mapping, Phylogeography, Biogeography, DNA Barcode Reference Library, DNA barcoding, Taxonomic, Vertebrates, DNA data banks, Research Article, Computer and Information Sciences, Conservation of Natural Resources, Evolutionary Processes, Evolutionary systematics, Barcoding, Chondrichthyans, Conservation, Mediterranean Sea, mtDNA, Cartilaginous fish, Conservation, Biology, Phylogeographic structure, 010603 evolutionary biology, Molecular taxonomy, Species Specificity, Endemic Species, Genetics, Mediterranean Sea, Animals, DNA Barcoding, Taxonomic, 14. Life underwater, Endemism, Taxonomy, Population Biology, 010604 marine biology & hydrobiology, lcsh:R, Ecology and Environmental Sciences, Organisms, Biology and Life Sciences, DNA, Research and analysis methods, Molecular biology techniques, Taxon, Haplotypes, Threatened species, Earth Sciences, Sharks, Conservation status, lcsh:Q, Population Genetics, Marine biodiversity conservation, Elasmobranchii
Abstract

Cartilaginous fish are particularly vulnerable to anthropogenic stressors and environmental change because of their K-selected reproductive strategy. Accurate data from scientific surveys and landings are essential to assess conservation status and to develop robust protection and management plans. Currently available data are often incomplete or incorrect as a result of inaccurate species identifications, due to a high level of morphological stasis, especially among closely related taxa. Moreover, several diagnostic characters clearly visible in adult specimens are less evident in juveniles. Here we present results generated by the ELASMOMED Consortium, a regional network aiming to sample and DNA-barcode the Mediterranean Chondrichthyans with the ultimate goal to provide a comprehensive DNA barcode reference library. This library will support and improve the molecular taxonomy of this group and the effectiveness of management and conservation measures. We successfully barcoded 882 individuals belonging to 42 species (17 sharks, 24 batoids and one chimaera), including four endemic and several threatened ones. Morphological misidentifications were found across most orders, further confirming the need for a comprehensive DNA barcoding library as a valuable tool for the reliable identification of specimens in support of taxonomist who are reviewing current identification keys. Despite low intraspecific variation among their barcode sequences and reduced samples size, five species showed preliminary evidence of phylogeographic structure. Overall, the ELASMOMED initiative further emphasizes the key role accurate DNA barcoding libraries play in establishing reliable diagnostic species specific features in otherwise taxonomically problematic groups for biodiversity management and conservation actions., peer-reviewed

Published
2017

112. Comparative Morphology of Skeletal Development in Homo sapiens and Raja asterias : Divergent Stiffening Patterns Due to Different Matrix Calcification Processes.

Author

Pazzaglia UE, Zecca PA, Terova G, Serena F, Mancusi C, Raimondi G, Zarattini G, Raspanti M, and Reguzzoni M

Abstract

Before calcification begins, the early embryonic and fetal skeletal development of both mammalian Homo sapiens and the chondrichthyan fish Raja asterias consists exclusively of cartilage. This cartilage is formed and shaped through processes involving tissue segmentation and the frequency, distribution, and orientation of chondrocyte mitoses. In the subsequent developmental phase, mineral deposition in the cartilage matrix conditions the development further. The stiffness and structural layout of the mineralized cartilage have a significant impact on the shape of the anlagen (early formative structure of a tissue, a scaffold on which the new bone is formed) and the mechanical properties of the skeletal segments. The fundamental difference between the two studied species lies in how calcified cartilage serves as a scaffold for osteoblasts to deposit bone matrix, which is then remodeled. In contrast, chondrichthyans retain the calcified cartilage as the definitive skeletal structure. This study documents the distinct mineral deposition pattern in the cartilage of the chondrichthyan R. asterias , in which calcification progresses with the formation of focal calcification nuclei or "tesserae". These are arranged on the flat surface of the endo-skeleton (crustal pattern) or aligned in columns (catenated pattern) in the radials of the appendicular skeleton. This anatomical structure is well adapted to meet the mechanical requirements of locomotion in the water column. Conversely, in terrestrial mammals, endochondral ossification (associated with the remodeling of the calcified matrix) provides limb bones with the necessary stiffness to withstand the strong bending and twisting stresses of terrestrial locomotion. In this study, radiographs of marine mammals (reproduced from previously published studies) document how the endochondral ossification in dolphin flippers adapts to the mechanical demands of aquatic locomotion. This adaptation includes the reduction in the length of the stylopodium and zeugopodium and an increase in the number of elements in the autopodium's central rays.

Published
2024
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113. Revision of the genus Centrophorus (Squaliformes: Centrophoridae): Part 3Redescription of Centrophorus uyato (Rafinesque) with a discussion of its complicated nomenclatural history.

Author

White WT, Guallart J, Ebert DA, Naylor GJP, Verssimo A, Cotton CF, Harris M, Serena F, and Iglsias SP

Subjects
Animals, Sharks, Squalus
Abstract

Centrophorus uyato (Rafinesque, 1810) has a complicated nomenclatural history which has led to multiple scientific names being ascribed to this species. In the Mediterranean Sea, and elsewhere in its range, this species was previously referred to as C. granulosus (Bloch Schneider, 1801). The first paper in this revision series clarified that C. granulosus refers to a much larger species of gulper shark which attains at least 1.7 m length and is absent from the Mediterranean Sea. Further complicating the nomenclature of this species is the fact that the original description clearly refers to a Squalus species, and not a Centrophorus species. In this third part of the revision of the genus Centrophorus, this problematic species is redescribed. A detailed synonymy is provided and it is confirmed that C. machiquensis, C. bragancae and C. zeehaani are junior synonyms of this species. To preserve nomenclatural stability within the genus, the name Centrophorus uyato is retained for this species with a neotype from close to the original type locality off Italy being designated. Intraspecific variation within Centrophorus uyato is also discussed, particularly relating to denticle morphology and body morphology.

Published
2022
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