De Arruda Leme, Maria Helena [UNESP]Negreiros-Fransozo, Maria Lucia [UNESP]2014-05-272014-05-271998-09-01Revista de Biologia Tropical, v. 46, n. 3, p. 673-678, 1998.0034-7744http://hdl.handle.net/11449/65511This paper describes the frequency of occurrence and reproductive patterns of the tree mangrove crab Aratus pisonii. Monthly samples were taken from January 1993 to June 1994 in an estuarine mangrove from Ubatuba region, Brazil. A total of 1 078 animals, 489 males and 589 females (131 ovigerous females) were collected. Carapace width ranged from 4.2 to 25.9 mm. A summer reproductive peak followed by a recruitment juvenile pulse was verified. Females were more abundant than males in the intermediate size classes. The sex-ratio in several months was biased towards females, suggesting a poligynous population and migration of females to mangrove fringes at the time of incubation and spawning.673-678engAratus pisoniiBrazilGrapsidaeReproductionSex-ratioArtigoS0034-77441998000300021WOS:000079063000021Acesso aberto2-s2.0-0009853959