Biological characteristic of the Patagonian scallop Zygochlamys patagonica across their SW Atlantic distribution range: shell morphology, internal growth pattern, age and size/age at first maturity

LOMOVASKY BETINA JUDITH

2007-01-01/2007-10-01

1-51

Biológica

Produccion animal-Pesca

The distribution of Z. patagonica in discrete beds along a large latitudinal gradient (approximately 20º) of the Atlantic coast is expected to generate different patterns of growth, aging, and/or morphometric characteristics, and reproductive events. Therefore, it is important to identify possible differences between beds in order to perform bed-specific stock assessment. Thus the purpose of this work is to evaluate if there are differences in the key biological reference such as morphometry, growth rates, maximum age and age/size at first maturity in the main beds along their extended latitudinal distribution in the South-western Atlantic.