Produção Nacional
Revisado por pares
Insights of the life history in the porcellanid crab Petrolisthes armatus (Gibbes, 1850) (Crustacea: Anomura: Porcellanidae) from the Southwestern Atlantic coast
2017; Taylor & Francis; Volume: 61; Issue: 2 Linguagem: Inglês
10.1080/07924259.2017.1285818
ISSN2157-0272
AutoresMarcelo Antônio Amaro Pinheiro, Marcio Camargo Araújo João, Maria Helena Arruda de Leme, Akeme Milena Ferreira Matsunaga, Juliana Priscila Piva Rio, Patricio Hernáez,
Tópico(s)Marine and fisheries research
ResumoPetrolisthes armatus (Gibbes, 1850) life history was evaluated based on growth and reproduction.Specimens were captured at Ubatuba (Brazil), identified, sexed and measured: carapace (CL, length; CW, width), larger cheliped propodus (PL, length; PW, width; and PH, height), and 2th and 5th abdominal somite (AW 2 and AW 5 , width).Relative growth was studied using CL as independent variable and its relation with other variables (dependents), to estimate puberty size and morphological maturity.Fecundity was represented by number of eggs vs. body size CL, with a better fit using a power function.Considering the 257 specimens analyzed, males were larger than females, and the overall sex ratio was 1:1, with some differences among size classes.Maturity (puberty size) was revealed by: AW 2 × CL (males: 8.6 mm CL; females: 7.6 mm CL); and AW 5 × CL (7.1 and 7.6 mm CL, respectively).Reproduction was continuous, but more intense in rainy season and recruitment occurring in dry season.Fecundity of this species was 228 ± 163 eggs, with better fit by a power function (R 2 = 0.72).Maturity size and growth differed when a pristine area (Ubatuba) was compared with a polluted area (São Sebastião), in the same Brazilian area (São Paulo State).
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