Trawl mesh selectivity and body engagement pattern in the red shrimp Aristaeomorpha foliacea (Risso, 1827) (Crustacea: Decapoda)

The paper presents selectivity data and utilizes an elliptic surface index (maximum height and width of the folded body), in order to explain the selectivity differences between sexes and to investigate the body engagement pattern of the red shrimp Aristaeomorpha foliacea. The results show that male...

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Published in:Journal of natural history 1998-11, Vol.32 (10-11), p.1431-1437
Main Authors: Bianchini, M.L., Di Stefano, L., Ragonese, S.
Format: Article
Language:English
Subjects:
Aristaeomorpha foliacea
fishery
Marine
Mediterranean Sea
red shrimp
selectivity
trawling
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description The paper presents selectivity data and utilizes an elliptic surface index (maximum height and width of the folded body), in order to explain the selectivity differences between sexes and to investigate the body engagement pattern of the red shrimp Aristaeomorpha foliacea. The results show that males are retained more, with significant differences, and demonstrates a previously unknown morphological difference between sexes (folded males are significantly higher than females of the same carapace length, while the latter are larger, but not significantly, than males of similar size). Nevertheless, in practice the overall escapement rate should not change dramatically with sex, since the resulting 'elliptic surface' is not statistically different.
doi_str_mv 10.1080/00222939800770961
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source Taylor and Francis Science and Technology Collection
subjects Aristaeomorpha foliacea
fishery
Marine
Mediterranean Sea
red shrimp
selectivity
trawling
title Trawl mesh selectivity and body engagement pattern in the red shrimp Aristaeomorpha foliacea (Risso, 1827) (Crustacea: Decapoda)
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