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Latin american journal of aquatic research

On-line version ISSN 0718-560X

Abstract

BARRIGA, Edward et al. Distribution, abundance, and population structure of deep red shrimp Haliporoides diomedeae (Crustacea: Decapoda: Solenoceridae) off northern Peru (2007-2008). Lat. Am. J. Aquat. Res. [online]. 2009, vol.37, n.3, pp.371-380. ISSN 0718-560X.

The distribution, relative abundance, and population structure of Haliporoides diomedeae was determined off northern Peru (3°30'S-10°00'S) by analyzing data from two cruises carried out in 2007 and 2008 on board the B/O Miguel Oliver to assess the bentho-demersal fauna between 200 and 1,500 m depth, us-ing a stratified random bottom trawl design. The total catch from the 122 hauls (covering four sectors and three strata) was 48,056 kg, with ~347 fish and invertebrate species. H. diomedeae was the most important shrimp in the catches (411 kg), with the highest abundance levéis between 600 and 1,600 m depth north of 7°00'S. The mean catch per unit área (CPUA) was between 83.4 and 211 kg km" . The total biomass was esti-mated to be 1,139.74 ton (± 245.6 ton). The mean carapace length of the females was 40.6 mm, with a range of 14.5 to 74.5 mm and a main modal group of 30 mm; the mean carapace length of the males was 30.6 mm, with a range of 16 to 63 mm and a main modal group of 27 mm. Males and females showed six modal groups, sexual dimorphism, and a bathymetric gradient. The length-weight relationship was allometric. Given the distribution, abundance, and size structure oíH. diomedeae off the northern Peruvian coast, it can be considered a potentially exploitable species inthe sea off northern Peru.

Keywords : Haliporoides diomedeae; distribution; abundance; population structure; northern Peru.

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