How many are they? Estimates of demographic patterns of reproductive females of southern right whale (Eubalaena australis) in the southern coast of Brazil

Eduardo P. Renault-Braga; Karina R. Groch; Paulo C. Sim?es-Lopes

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How many are they? Estimates of demographic patterns of reproductive females of southern right whale (Eubalaena australis) in the southern coast of Brazil

机译：How many are they? Estimates of demographic patterns of reproductive females of southern right whale (Eubalaena australis) in the southern coast of Brazil

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Southern right whales use the Brazilian coast as a wintering area. This populationwas severely depleted by whaling up until 1973. Since the 1980s, studies have shownthat this species is now restricted to the southern waters of Brazil. Using photo-identificationdata obtained via standardized aerial surveys from Florianópolis, Stateof Santa Catarina (SC) (?27.797°/?48.533°) to Torres, State of Rio Grande do Sul (RS)(?29.396°/?49.763°), mark-recapturemethods were used to estimate survival captureand recruitment probability, population size using the POPAN model for reproductivefemales. Data were collected between 2004 and 2021. The final model was selectedbased on the lowest Akaike Information Criterion value. Of the 396 female whalesidentified, 41.41 were recaptured at least once. The final POPAN model showedtime dependence in all parameters. The population size was estimated to be 397 reproductivefemales. This is the first update on the population trends for southernright whales in Brazilian breeding grounds since 2010.

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来源
《Marine ecology》 |2023年第2期|e12744.1-e12744.6|共6页
作者
Eduardo P. Renault-Braga; Karina R. Groch; Paulo C. Sim?es-Lopes;
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作者单位

Instituto Australis de Pesquisa eMonitoramento Ambiental, Imbituba,Brazil,Laboratório de Mamíferos Aquáticos,Departamento de Ecologia e Zoologia,Centro de Ciências Biológicas,Universidade Federal de Santa Catarina,Florianópolis, Brazil,Setor de Ciências B;

Instituto Australis de Pesquisa eMonitoramento Ambiental, Imbituba,Brazil;

Laboratório de Mamíferos Aquáticos,Departamento de Ecologia e Zoologia,Centro de Ciências Biológicas,Universidade Federal de Santa Catarina,Florianópolis, Brazil;

Setor de Ciências Biológicas,Departamento de Zoologia, Programade Pós-Gradua??oem Zoologia, C;

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正文语种英语
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Brazilian calving ground; POPAN model; population estimates; southern right whales;

How many are they? Estimates of demographic patterns of reproductive females of southern right whale (Eubalaena australis) in the southern coast of Brazil

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