Larval development of Aratus pisonii (Milne Edwards) ( Brachyura, Grapsidae) from marine and estuarine environments reared under different salinity conditions.

Abstract:

Larval development of the mangrove crab Aratus pisonii was studied using larvae hatched from females collected from 2 populations off the Venezuelan coast: one located at mangrove swamps associated with an estuarine coastal lagoon and the other at a marine bay. Laboratory rearings were performed using offshore sea water diluted to 15, 25 and 35per milleS. Salinity and larval origin have a significant effect only upon survival of zoea I. Only mean duration of zoea I of marine larvae were significantly affected by salinity. A differential response was found for the whole larval phase associated with salinity; this response was similar for marine and estuarine larvae. Differences in larval survival are interpreted as an adaptation of the species to the environmental conditions of localities where adults were collected.-from Authors

Año de publicación:

1986

Keywords:

Fuente:

scopus