%0 Journal Article
%T Fecundity, reproductive seasonality and maturation size of Callinectes sapidus females (Decapoda: Portunidae) in the Southeast coast of Brazil
%A Evandro Severino-Rodrigues
%A Joelson Musiello-Fernandes
%A 芍lvaro A.S. Mour
%A Geisa M.P. Branco
%J Revista de Biolog赤a Tropical
%D 2013
%I Universidad de Costa Rica
%X C. sapidus fisheries has a significant influence on the economy of some countries in North America and has a relative extensive literature in these regions. However, only few papers discuss the ecology of C. sapidus in the South Atlantic, despite its economic importance in that region. We studied the fecundity, reproductive seasonality and maturation size of C. sapidus females captured in the Southeast coast of Brazil from January to December 2002. Females were separated, weighted (Wt), and cephalothorax width (CW) was measured. Furthermore, the eggs-masses were classified according to embryonic development, separated, weighted (We) and fixed. Eggs were also separated and counted, resulting in the average number of eggs per individual (Ne). A total sample of 307 females was collected: 78 young, 130 adults and 99 ovigerous. Ovigerous females showed CW between 7.49 and 15.89cm with average of 12.21cm and were distributed throughout the sample period, with highest incidence between December and March. The onset of morphological maturity (L50) occurred at CW=10.33cm, and the size in which all were mature (L100) was CW=11.20cm. Individual fecundity ranged from 689 356 to 3 438 122 with an average of 2 006 974. The CW showed a positive growth trend with Ne and We. We concluded that in order to ensure the resource sustainability, it is necessary to prohibit captures of C. sapidus in these regions, especially during summer. Additionally, our studies suggest that the minimum capture size should be 11cm of carapace width. Hay pocos estudios sobre la ecolog赤a de C. sapidus en el Atl芍ntico Sur, a pesar de su importancia econ車mica en la regi車n. El presente estudio tiene como objetivo conocer la fecundidad, periodo reproductivo y talla de primera madurez morfol車gica de las hembras de C. sapidus, con el fin de contribuir a una mejor comprensi車n de la especie en el Atl芍ntico occidental, as赤 como ayudar en la toma de medidas de gesti車n en la regi車n. Las muestras fueron recolectadas mensualmente de enero a diciembre 2002 en sudeste del Brazil. Se recogieron 307 hembras: 78 j車venes, 130 adultos y 99 ov赤geras. Las hembras ov赤geras mostr車 su intervalo de talla de 7.49-15.89cm ancho del carapaz車n (AC) y se distribuyeron en todo el per赤odo de la muestra, con mayor incidencia entre diciembre y marzo. El inicio de la madurez morfol車gica (L50) fue con la AC=10.33cm y el tama o que ten赤an todos los maduros (L100) con AC de 11.20cm. Fecundidad individual oscil車 entre 689 356 a 3 438 122, con una media 2 006 974. El AC mostr車 una tendencia positiva en el crecimiento con n迆mero de h
%K jaiba azul
%K biolog赤a reproductiva
%K recurso pesquero
%K estuario
%K blue crab
%K reproductive biology
%K fisheries resource
%K estuarine
%U http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442013000300011