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Relative growth and sexual maturity of the freshwater shrimp Palaemon pandaliformis (Crustacea, Palaemonidae) in northeastern of Brazil (Canavieiras, Bahia) Iheringia, Sér. Zool.
Paschoal,Lucas R. P.; Guimarães,Fernanda J.; Couto,Erminda C. G..
This study comprises the description of relative growth and sexual maturity of a population of Palaemon pandaliformis Stimpson, 1871 in Salsa River (Northeastern Brazil). Samples were collected monthly between September 2009 and August 2010. Females were larger, heavier, and showed a greater allometric coefficient (b) than male specimens. Only carapace length vs. pleura length in females presented a significant difference in the relative growth pattern, indicating a puberty moult. This relationship is strictly correlated to reproduction and its success rate in female shrimps. Estimated carapace length in 50% of mature females (CL50) was 4.53 mm. It was not possible to compare obtained CL50 results due to a lack of studies on this species. Comparison was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Caridea; Allometric growth; Morphometric relationships.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000100004
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Growth and reproductive biology of the amphidromous shrimp Palaemon pandaliformis (Decapoda: Caridea) in a Neotropical river from northeastern Brazil Rev. Bras. Zool.
Paschoal,Lucas R.P.; Guimarães,Fernanda J.; Couto,Erminda C.G..
ABSTRACT Population biology, growth and reproductive aspects of the amphidromous shrimp Palaemon pandaliformis (Stimpson, 1871) were investigated in a Neotropical river of northeastern Brazil. The specimens were collected every month from September 2009 to August 2010. Total and monthly sex ratios deviated in favour of males. Von Bertalanffy growth parameters indicated that the females grew more rapidly, reached larger sizes, and had a longer life span than males. We also observed continuous reproductive activity and juvenile recruitment throughout the year. Relations between the number of eggs (fecundity) and body size indicated that fecundity in females increase with size. Compared with previous results, some population biology parameters of the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Morphometric relationships; Palaemonidae; Population biology; Reproduction; Sexual dimorphism.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000600501
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