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27 results on '"herring stocks"'

1. Population genetic structure of the parasite Anisakis simplex (s. s.) collected in Clupea harengus L. from North East Atlantic fishing grounds.

Author

Mattiucci, Simonetta, Giulietti, Lucilla, Paoletti, Michela, Cipriani, Paolo, Gay, Melanie, Levsen, Arne, Klapper, Regina, Karl, Horst, Bao, Miguel, Pierce, Graham J., and Nascetti, Giuseppe

Subjects
*FISH population genetics, *FISH parasites, *ATLANTIC herring, *HAPLOTYPES
Abstract

The Atlantic herring is a schooling, pelagic species that inhabits both sides of the North Atlantic Ocean. Herring stock identification is usually based on several approaches, including fish meristic characters, population genetic analysis and the use of parasite species composition. A total of 654 Anisakis spp. larvae collected from herring of four fishing grounds in the Norwegian Sea, Baltic Sea, North Sea, and the English Channel off the French coast, was identified to species level using diagnostic allozymes and sequence analysis of EF1 α−1 nDNA and the mtDNA cox2 genes. Population genetic differentiation of Anisakis simplex (s. s.) among the different fishing areas was estimated, at the intraspecific level, on the basis of mtDNA cox2 sequences analysis. Spatial comparison based on molecular variance analysis and F st values was performed for the collected specimens (among regions). Haplotype network construction showed relevant differences in haplotype frequencies between samples of A. simplex (s. s.) from the different geographical areas. Results indicate a genetic sub-structuring of A. simplex (s. s.) obtained from herring in different areas, with the population from the Norwegian Sea being the most differentiated one, and with North Sea and Baltic Sea populations being most similar. The population genetic structure of A. simplex (s. s.) was in accordance with the herring population genetic structure throughout the host’s geographical range in the NE Atlantic. Results suggest that mtDNA cox2 is a suitable genetic marker for A. simplex (s. s.) population genetic structure analysis and a valuable tool to elucidate the herring stock structure in the NE Atlantic Ocean. [ABSTRACT FROM AUTHOR]

Published
2018
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2. Discrimination of western Baltic spring-spawning and central Baltic herring (Clupea harengus L.) based on growth vs. natural tag information.

Author

Gröhsler, Tomas, Oeberst, Rainer, Schaber, Matthias, Larson, Niklas, and Kornilovs, Georgs

Subjects
*BALTIC herring, *FISH growth, *FISH populations, *SURVEYS
Abstract

Gröhsler, T., Oeberst, R., Schaber, M., Larson, N., and Kornilovs, G. 2013. Discrimination of western Baltic spring-spawning and central Baltic herring (Clupea harengus L.) based on growth vs. natural tag information. – ICES Journal of Marine Science, 70: 1108–1117.In the Baltic Sea, several stocks of herring (Clupea harengus L.) are surveyed and managed separately. For assessment purposes, a spatial stock separation based on ICES subdivisions is implemented. However, especially in the western Baltic, the distribution areas of two stocks, the western Baltic spring-spawning herring and the central Baltic herring, overlap. Results of regularly conducted surveys for assessment purposes indicated variable degrees of mixing of both stocks in the survey area, based on conspicuous differences in weights/lengths within certain age groups, especially in an area known for overlapping distribution of both stocks. At present, varying fractions of the central Baltic herring stock have not been taken into account during regular surveys conducted in the western Baltic, leading to possible undetected biases in assessment indices derived from these surveys. Additionally, methods otherwise applied for stock separation of Baltic herring so far are based on parameters that cannot readily be derived during regular surveys. In this paper, we present a simple and quick method to reliably allocate herring to either stock based on a separation function derived from survey-based length-at-age data, thus facilitating a more precise estimate of biomass and abundance indices from regular surveys and commercial fisheries. [ABSTRACT FROM PUBLISHER]

Published
2013
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3. Population genetic structure of the parasite Anisakis simplex (s. s.) collected in Clupea harengus L. from North East Atlantic fishing grounds

Author

Lucilla Giulietti, Giuseppe Nascetti, Michela Paoletti, Regina Klapper, Miguel Bao, Horst Karl, Paolo Cipriani, Graham J. Pierce, Simonetta Mattiucci, and Arne Levsen

Subjects
0301 basic medicine, Population genetics, Population, clupea harengus, mtDNA cox2, north east atlantic ocean, Anisakis, 03 medical and health sciences, Herring, Herring stocks, 14. Life underwater, anisakis simplex (sensu stricto), education, Clupea harengus, Genetic marker, education.field_of_study, Atlantic herring, mtdna cox2, biology, Anisakis simplex, population genetics, Clupea, 030108 mycology & parasitology, biology.organism_classification, genetic marker, herring stocks, aquatic science, Fishery, Anisakis simplex (sensu stricto), Genetic structure, North East Atlantic Ocean
Abstract

9 pages, 3 figures, 5 tables.-- Simonetta Mattiucci ... et al., The Atlantic herring is a schooling, pelagic species that inhabits both sides of the North Atlantic Ocean. Herring stock identification is usually based on several approaches, including fish meristic characters, population genetic analysis and the use of parasite species composition. A total of 654 Anisakis spp. larvae collected from herring of four fishing grounds in the Norwegian Sea, Baltic Sea, North Sea, and the English Channel off the French coast, was identified to species level using diagnostic allozymes and sequence analysis of EF1 α−1 nDNA and the mtDNA cox2 genes. Population genetic differentiation of Anisakis simplex (s. s.) among the different fishing areas was estimated, at the intraspecific level, on the basis of mtDNA cox2 sequences analysis. Spatial comparison based on molecular variance analysis and Fst values was performed for the collected specimens (among regions). Haplotype network construction showed relevant differences in haplotype frequencies between samples of A. simplex (s. s.) from the different geographical areas. Results indicate a genetic sub-structuring of A. simplex (s. s.) obtained from herring in different areas, with the population from the Norwegian Sea being the most differentiated one, and with North Sea and Baltic Sea populations being most similar. The population genetic structure of A. simplex (s. s.) was in accordance with the herring population genetic structure throughout the host’s geographical range in the NE Atlantic. Results suggest that mtDNA cox2 is a suitable genetic marker for A. simplex (s. s.) population genetic structure analysis and a valuable tool to elucidate the herring stock structure in the NE Atlantic Ocean, The research was carried out with funding received from the European Union’s Seventh Framework Programme for research, technological development and demonstration, under the grant agreement no. 312068 “PARASITE”

Published
2018

4. Las Calculadoras y el Pensamiento Deductivo

Author

Noguera, Norma

Subjects
Calculadoras, Pensamiento deductivo, spawning activity, Pensamiento matemático, recruitment, Metodología de trabajo en el aula, Fisheries, stock development, spawning areas, Clupea harengus, Biology, herring stocks
Abstract

Este creciente fracaso que los estudiantes de la escuela media y de secundaria están experimentando en los cursos de matemática, así como el impresionante desarrollo tecnológico de los últimos años han promovido un elevado interés tanto de la sociedad así como de la comunidad educativa en general acerca de la importancia de integrar la tecnología y la enseñanza de la matemática, en los primeros años de la escuela secundaria. Para lograr un cambio en el currículo de la enseñanza de la matemática es necesaria la creación de ambientes de aprendizaje que incluyan el uso tecnologías tales como computadoras con el adecuado software y calculadoras con capacidades mayores que las de construir gráficos. Además es importante considerar un cambio radical en la preparación de los futuros profesores de matemática para que reciban la preparación adecuada para poder implementar en una forma apropiada el uso de estas tecnologías en sus clases con sus futuros estudiantes. Debemos recordar que investigaciones al respecto confirman que los profesores tienden a enseñar en la misma forma en que aprendieron. Otro factor importante es el desarrollo e implementación de cursos de entrenamiento que incluyan la integración de la tecnología y la matemática para los profesores en servicio, de esta manera estos profesores contarían con un medio de actualizar su conocimiento de la materia, y esto tal vez los ayudaría a cambiar sus actitudes hacia la utilización de tecnología en el aula.

Published
2015

5. Recent information on herring in the Baltic Sea in view of German fishery interests

Author

Gröhsler, Tomas

Subjects
stock data, economy, Fisheries, stock development, herring stocks
Abstract

Germany is planning to construct a new herring factory on the Island of Rügen. This factory will need about 50 000 t of herring per year. For the German fishery this would mean to increase the past 10w 1andings of less than 15 000 t per year to a level which had a1ready been reached by the GDR before the reunification. News of less herring in the Baltic and a decline of German landings in 1998 compared to the years before have led to discussions whether the planned increase in landings could be reached and kept in the future. Information is given in view of German fishery interests about:• the actual assessed herring stock units and the corresponding recent stock development in the Baltic Sea• the Total Allowable Catch (TAC) values for the western and central Baltic Sea in 1998 and in 1999• the German landings during spring of the years 1993 to 1998 in the Greifswalder Bodden, main German fishery ground in the Baltic Sea Johann Heinrich von Thünen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung = Information on Fishery research in 2010.

Published
1998

6. Situation der Jungfischbestände in der Nordsee

Author

Dornheim, Holger and Wagner, G.

Subjects
youngfish survey, recruitment, fishing area, hydrographic data, Fisheries, North Sea, herring stocks, stock assessment
Abstract

180. (62.) Reise des FFS "Anton Dohrn" (ICES-Jungfischreise) Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1975

7. Internationale Jungheringsuntersuchungen im Nordatlantik

Author

Wagner, G.

Subjects
youngfish survey, recruitment, international cooperation, North Atlantic, Fisheries, stock development, North Sea, groundfish, herring stocks
Abstract

Erster Abschnitt der 188. (70.) Reise des FFS "Anton Dohrn" vom 8.1. - 29.1.1976 Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1976

8. FFS 'Anton Dohrn' untersucht Heringsbestände vor der US-amerikanischen Ostküste

Author

Dornheim, Holger

Subjects
Georges Bank, recruitment, Fisheries, stock development, ICNAF area 5, herring stocks, stocking
Abstract

210. (92.) Reise. Teil 1 Georges Bank und anliegende Gewässer; 24.1. - 16.3.1979 Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1979

9. Otolithenuntersuchungen am Nordseehering

Author

Bohl, H.

Subjects
otoliths, Fisheries, fish biology, age determination, North Sea, herring stocks, Biology
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1959

10. Bericht über die 94. Forschungsreise des FFS 'Anton Dohrn'

Author

Reinsch, H.H.

Subjects
pelagic trawling, redfish, cruise report, Fisheries, catch effort, herring stocks, fishing grounds, recruitment, hydrography, Gadus morhua, Sebastes viviparus, Pollachius virens, stock development, Clupea harengus
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1966

11. Veränderungen im Heringsbestand und die Heringsfischerei - Das Heringssymposium des Internationalen Rates für Meeresforschung

Author

Schubert, K.

Subjects
landings, herring survey, ICES, population dynamics, Fisheries, stock development, herring fisheries, Clupea harengus, herring stocks, stock assessment, Management
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1962

12. Die Durohführung der internationalen Ölheringsmarkierung auf dem Blödengrund 1958

Author

Krefft, G.

Subjects
stock monitoring, ICES, Fisheries, recapture, tagging, Clupea harengus, herring stocks
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1958

13. Der Heringsfang und das Heringsvorkommen im ICNAF-Gebiet

Author

Schubert, K.

Subjects
herring fishery, landings, recruitment, Fisheries, catch effort, fishing areas, herring stocks, spawning stocks
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1966

14. Starker Befall der Heringe mit dem pathogenen Pilz Ichthyosporidium hoferi vor Neu-Schottland

Author

Institut für Küsten und Binnenfischerei, Hamburg

Subjects
fungal decay, marine fish, Fisheries, fish diseases, pathogene fungi, Clupea harengus, Biology, herring stocks, meeting report
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1963

15. Der Georges Bank Hering

Author

Schubert, K.

Subjects
stock migration, stock distribution, Fisheries, trawl net, catch effort, ocean currents, Oceanography, herring stocks, herring fishery, drift nets, plankton monitoring, Clupea harengus, vertical migration, fishing gear
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1966

16. Neuere Untersuchungen über den atlanto-skandischen Hering in seinem Überwinterungsgebiet

Author

Schubert, K.

Subjects
herring fishery, schooling, stock distribution, Fisheries, hibernation areas, stock development, pelagic fishing, atlanto-scandic herring, vertical migration, Biology, herring stocks
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1966

17. Nordostatlantische Fischereikommission (NEAFC) tagte in London

Author

Schubert, K.

Subjects
sustainable fisheries, Fisheries, North Atlantic, closure periods, fishery commission, herring stocks, deep sea fishing, herring, Salmon, regulations, international, fishery techniques, fishery management, high sea fishery, stock development, North Sea
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1971

18. Verschiedene biologische Heringsgruppen in der Ostsee

Author

Rauck, G.

Subjects
Baltic Sea, stock distribution, stock characteristics, otolith characteristics, Fisheries, stock differences, herring stocks, Biology
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1965

19. 3. Tagung der Nordostatlantischen Fischereikommission

Author

Sahrhage, D.

Subjects
stock protection, stock distribution, North Atlantic, selectivity, Fisheries, fishery commission, cod, herring stocks, fisheries control, Management, fishery techniques, fishery management, sustainable fishery, bycatch regulation, meeting report
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1965

20. Über den Kandalakscha-Hering

Author

Schubert, K.

Subjects
Kandalakscha Bucht, recruitment, stock distribution, Fisheries, stock development, spawning areas, herring fisheries, Biology, herring stocks, stock management
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1962

21. Heringsvorkomnen und Wassertemperatur

Author

Rogalla, E. H. and Sahrhage, D.

Subjects
hydrography, water temperature, stock distribution, Fisheries, North Sea, fish location, Clupea harengus, Oceanography, herring stocks, thermometric methods
Published
1960

22. Situation der Makrelenbestände in der Nordsee und Skagerrak

Author

Dornheim, Holger

Subjects
Scomber scombrus, landings, ICES, Fisheries, catch effort, North Sea, stock assessment, herring stocks
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1971

23. Über den Bohuslän-Hering während der großen Fischereiperiode im 18. Jahrhundert

Author

Schubert, K.

Subjects
stock monitoring, recruitment, atlantic-scandic herring, Fisheries, population dynamics, stock development, spawning areas, Sweden Westcoast, Clupea harengus, herring stocks
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1960

24. Internationale Heringsmarkierungen 1958

Author

Krefft, G.

Subjects
stock monitoring, joungfish tagging, Fisheries, recapture, tagging, herring stocks
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1958

25. Heringsmarkierungen in der Nordsee

Author

Wagner, G.

Subjects
tagging method, Fisheries, recapture, North Sea, tagging area, herring stocks, Biology, tagging experiments
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1964

26. Heringslaichplätze auf dem Dogger - (Aus der Tätigkeit des Fischereiforschunsschiffes 'Anton Dohrn'.)

Author

Schubert, K.

Subjects
recruitment, cruise report, Fisheries, spawning areas, Clupea harengus, fishery research vessel, Biology, herring stocks, stock assessment
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1959

27. Die Wanderungen des Herings an der Nordküste von Island

Author

Wagner, G.

Subjects
stock distribution, fish migration, Fisheries, Clupea harengus, herring stocks, Biology
Abstract

Johann Heinrich von Thunen-Institute, Federal Research Institute for Rural Areas, Forestry and Fisheries began publishing the Informationen aus der Fischereiforschung – Information on Fishery research in 2010

Published
1962

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