INBIOSUR   25013
INSTITUTO DE CIENCIAS BIOLOGICAS Y BIOMEDICAS DEL SUR
Unidad Ejecutora - UE
artículos
Título:
Population structure of the burrowing crab Neohelice granulata (Brachyura, Varunidae) in a southwestern Atlantic salt marsh
Autor/es:
ANGELETTI SABRINA; CERVELLINI PATRICIA MARTA
Revista:
LATIN AMERICAN JOURNAL OF AQUATIC RESEARCH
Editorial:
UNIV CATOLICA DE VALPARAISO
Referencias:
Lugar: Valparaíso; Año: 2015 vol. 43 p. 539 - 547
ISSN:
0718-560X
Resumen:
Neohelice granulata inhabits estuarine and protected coastal areas in temperate regions and is the most dominant decapod crustacean in the Bahía Blanca Estuary, Argentina. The population structure was studied during a year in a SW Atlantic salt marsh located in the Bahía Blanca Estuary. Crabs were sampled monthlyfrom August 2010 to July 2011. The maximum observed density was 30 crabs m-2in February and 70 burrows m-2 in May. The maximum carapace width (CW) was 32 and 27.5 mm in males and females respectively. Medium size crabs were between 16 and 20 mm CW. Significantly smaller sized crabs were observed at thelower intertidal regions (P < 0.05). The sex ratio was favorable for males and was significantly different from the expected 1:1 (P < 0.05). The recruitment of unsexed juveniles crabs (CW