Consulta: creatorFacets:"Vasconcellos,Ruan M."
Registros recuperados: 3
Data/hora: 13/06/2024 17:51:35

Habitat selection by anchovies (Clupeiformes: Engraulidae) in a tropical bay at Southeastern Brazil
Provedor de dados: 83
Autores: Araújo,Francisco G.; Silva,Marcio A.; Santos,Joaquim N. S.; Vasconcellos,Ruan M.
Distribution of anchovies (Clupeiformes, Engraulidae) was described in the Sepetiba Bay, a coastal area of Southeastern Brazil, to assess eventual mechanisms of habitat selection. Two fish sampling programmes were accomplished; one using beach seine (1998/2000) to catch juveniles in sandy beaches, and the other, using seines (1999/2000) to catch adults in deeper bay areas. Six species representing 4 genera were recorded: Anchoa tricolor, Anchoa januaria, Anchoa lyolepis, Cetengraulis edentulus, Engraulis anchoita and Lycengraulis grossidens. Anchoa tricolor and A. januaria were the most abundant species, with the former peaking in the outer bay, while the latter peaking in the inner bay. Adults A. tricolor are target of heavy commercial fisheries in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish distribution; Sandy beach; Anchovy; Sepetiba bay.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000400006

Correction of the weight and length for juveniles Atherinella brasiliensis (Actinopterygii: Atherinopsidae) after fixation in formalin and preservation in ethanol
Provedor de dados: 103
Autores: Melo,Marcelo T.; Saturnino,Cíntia; Santos,Joaquim N. S.; Vasconcellos,Ruan M.; Cruz-Filho,Antonio G.; Araújo,Francisco G.
The present study compared losses of weight and length in specimens of Atherinella brasiliensis (Quoy &amp;amp; Gaimard, 1825) after fixation in formalin 10% during ten days, and posterior preservation in ethanol 70% for 45 days, in two solvents: freshwater and marine water. Additionally, correction factors were proposed to calculate the correction for weight and length from preserved specimens. The specimens were weighted and measured after collection (fresh), and with 10, 20, 27, 34, 41 and 55 days of fixation plus preservation. The largest losses in weight occurred during the first 20 days (10.35 ± 0.31% - freshwater; 11.29 ± 0.44% - marine water), continuing with lesser intensity up to the 27th day in freshwater dilution, and up to the 34th day in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Back-calculation; Initial length; Shrinkage; Size conversion.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702010000600009

Efeito do tempo de conservação dos espécimes sobre a qualidade dos microincrementos em otólitos sagittae de Anchoa tricolor (Agassiz) (Clupeiformes, Engraulidae)
Provedor de dados: 104
Autores: Santos,Joaquim N. de S.; Silva,Marcio de A.; Vasconcellos,Ruan M.; Araújo,Francisco G.
Efeito do tempo de conservação dos espécimes sobre a qualidade dos microincrementos em otólitos sagittae de Anchoa tricolor (Agassiz) (Clupeiformes, Engraulidae). O número de microincrementos em otólitos sagittae de espécimes de pós-larvas de Anchoa tricolor (Agassiz, 1829) fixadas em formol 10% foram comparados em diferentes períodos de conservação (quatro dias versus quatro anos). Diferenças significativas foram encontradas no número de microincrementos para pós-larvas variando de 20-26 mm de comprimento total (CT), com médias de 18,6 microincrementos (± 0.75 erro padrão) para peixes preservados por quatro anos, e 35,3 microincrementos (± 1.28 erro padrão) para peixes preservados por quatro dias. Portanto, o número de microincrementos em otólitos de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Idade; Manjubas; Pós-larvas; Conservação.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000400022