First record and preliminary information of the biology of the deep-sea african crab, Chaceon gordonae Ingle, 1985 (Brachyura: Geryonidae) in Saint Peter and Saint Paul Archipelago - Brazil.

Rômulo Costa Pires Ferreira, Diogo Martins Nunes, Renata Akemi Shinozaki-Mendes, Alessandra Maria Advíncula Pires, Fábio Hissa Vieira Hazin


DOI: https://doi.org/10.3856/vol44-issue2-fulltext-20

Abstract


Seven exploratory deep-water fishing surveys were carried out at Saint Peter and Saint Paul Archipelago between 2012 and 2014 at depths ranging from 300 to 700 m. During surveys the presence of a deep-sea crab, identified as Chaceon gordonae (Ingle, 1985), was recorded, with 458 specimens being caught. Of the sampled specimens, 252 were males and 206 were females. The carapace length (CL) of sampled crabs measured, on average, 110.81 ± 14.52 mm for males and 102.00 ± 16.55 mm for females, with males being therefore a bit larger. In general, the β1 parameter of the length-weight relationship indicates a positive allometric growth. A comparison of linear regression between the carapace length and right chela length and width for males revealed physical maturity between 108.90 and 111.00 mm CL, respectively, whereas the regression between carapace length and abdomen width with the presence of ovigerous specimens in females revealed a physical maturity at 84.00 mm CL. 


Ferreira R, Nunes D, Shinozaki-Mendes R, Pires A, Hazin F. First record and preliminary information of the biology of the deep-sea african crab, Chaceon gordonae Ingle, 1985 (Brachyura: Geryonidae) in Saint Peter and Saint Paul Archipelago - Brazil.. Lat. Am. J. Aquat. Res.. 2017;44(2). Available from: doi:10.3856/vol44-issue2-fulltext-20 [Accessed 22 Jan. 2019].
Ferreira, R., Nunes, D., Shinozaki-Mendes, R., Pires, A., & Hazin, F. (2017). First record and preliminary information of the biology of the deep-sea african crab, Chaceon gordonae Ingle, 1985 (Brachyura: Geryonidae) in Saint Peter and Saint Paul Archipelago - Brazil.. Latin American Journal of Aquatic Research, 44(2). doi:http://dx.doi.org/10.3856/vol44-issue2-fulltext-20