FECUNDITY AND MORPHOMETRY OF Achelous spinimanus CAUGHT ON THE COAST OF SAO PAULO STATE, BRAZIL

作者：De Carli Bruno Paes^*; Severino Rodrigues Evandro; Rotundo Matheus Marcos; Musiello Fernandes Joelson; Ancona Mirela Caleffi

来源：Boletim do Instituto de Pesca, 2014, 40(4): 487-495.

• blotched swimming crab
• morphometric relationships
• reproduction

This study provides a description of relative growth and fecundity of a population of Achelous spinimanus. Samples were collected monthly between August/2010 and July/2011 from landings of the pair trawls fleet on the coast of Sao Paulo state. Crabs were measured with precision caliper and the fresh weight of each individual recorded using a precision scale. Morphometric relationships were adjusted to a power y = a x(b)) and the regression coefficients determined for each category. Males showed a positive allometric growth for chelar propodus (b = 1.34) and females showed positive allometry for abdomen width (b = 1.12). The value of fecundity ranged from 165,750 to 1,058,500 eggs (556,750 +/- 212,256) and was verified increase according to the size of females. Due to same observed evidences, such as constant occurrence of ovigerous females and predominance of adults, it's possible of the species may be living in the area for reproduction. We emphasize the need for further studies to demonstrate other aspects of exploited population.

• 出版日期2014