ABSTRACT Objective. The sex ratio, proportion of ovigerous females, length at sexual maturity and fecundity of Grapsus grapsus crabs in the Lobos, Venados and Pajaros islands (southeastern Gulf of California) were analyzed. Materials and methods. Sampling was conducted monthly between March 2011 and ...
Deformidades e anormalidades em crustáceos têm sido associadas a fatores genéticos, problemas ocorridos durante a muda, danos causados por ectobiontes, predadores ou estresse ambiental causado por produtos químicos. Espécimes de caranguejos coletados no litoral de São Paulo apresentaram anormalidad...
O presente trabalho estudou o efeito da salinidade na sobrevivência e na duração do desenvolvimento larval do caranguejo-uçá, Ucides cordatus (do estuário do Rio Caeté, Norte do Brasil), até a fase de megalopa em sete tratamentos de salinidade (0, 5, 10, 15, 20, 25 e 30). A salinidade afetou sign...
A case of bilateral cheliped hypertrophya crab Uca cumulanta (Decapoda: Ocypodidae). An adult male of Uca cumulanta with bilateral cheliped hypertrophy was found during a collection of crabs at La Restinga Lagoon, Margarita Island, Venezuela. Both chelipeds were sub equal in size, regarding the major che...
The crab Heterocrypta tommasii (Decapoda: Parthenopidae): an addition to the carcinofauna of Venezuela. The crab Heterocrypta tommasii Rodrigues da Costa, 1959 is reported for the first time from Venezuelan marine waters and its main taxonomical features are presented and illustrated. This report extends...
