Mesedez, erabili identifikatzaile hau item hau aipatzeko edo estekatzeko: http://dspace.azti.es/handle/24689/190
Item honetako fitxategiak:
Ez dago item honi loturiko fitxategirik
Titulua: Fecundity of fishes inhabiting coastal and estuarine environments in the southwest Atlantic Ocean
Egilea: Costa, Eudriano F. S.; Dias, June F.; Murua, Hilario
Zitazioa: MARINE BIOLOGY RESEARCH, 2016, 12, 304-315
Laburpena: The aim of this study was to estimate the fecundity of six marine fish species from the southwest Atlantic off the coast of Sao Paulo State, Brazil. In particular, the number of oocytes in the most advanced vitellogenic stage (NDO), batch fecundity and the number of batches that will be produced were estimated. Specimens of longfinger anchovy Anchoa filifera, atlantic anchoveta Cetengraulis edentulus, bay whiff Citharichthys spilopterus, Stellifer brasiliensis, rake stardrum S. rastrifer and southern kingcroaker Menticirrhus americanus were captured bimonthly, from June (2012) to May (2013). The mature ovaries were removed, weighed, fixed in formalin solution and histologically analysed. All histological sections were photographed and the images analysed using advanced image processing techniques. The estimated number of batches that will be recruited to the germinal vesicle migration/hydrated stock ranged from one to four batches. NDO is positively related to ovarian and female size. Small females with low ovary weight produce low NDO. The NDO in A. filifera, C. edentulus and M. americanus may represent the final number of oocytes to be spawned in the next spawning event, which could be used for batch fecundity estimation. This study contributes to a better understanding of the reproduction of species inhabiting shrimp fishery grounds which are caught as by-catch in tropical and subtropical ecosystems. Information on the maturity and fecundity of these populations is an important element in assessing stock status and the degree of fishing pressure these populations are experiencing.
Gako-hitzak: Indeterminate fecundity; marine fishes; oocyte production; stereology; REPRODUCTIVE-BIOLOGY; MENTICIRRHUS-AMERICANUS; PERCIFORMES SCIAENIDAE; POPULATION-STRUCTURE; SPAWNING DYNAMICS; BATCH FECUNDITY; FEEDING ECOLOGY; SOUTHERN BRAZIL; SANTA-CATARINA; OOCYTE GROWTH
Gordailuaren-data: 2016
Argitalpen: TAYLOR \& FRANCIS AS
Dokumentu mota: Article
Hizkuntza: Ingelesa
DOI: 10.1080/17451000.2015.1136065
URI: http://dspace.azti.es/handle/24689/190
ISSN: 1745-1000
E-ISSN: 1745-1019
Babeslea: Post-graduate Program in Oceanography/CAPES \[7546/13-0]
Bildumetan azaltzen da:Artículos científicos



DSpaceko itemak copyright bidez babestuta daude, eskubide guztiak gordeta, baldin eta kontrakoa adierazten ez bada.