Open AccessLENGTH-WEIGHT RELATIONSHIP OF THE SIX MOST ABUNDANT FISH SPECIES IN PRAWN FISHERY SEMI-FIXED TRAP BYCATCHES IN THE LOWER AMAZON REGION (PARÁ, BRAZIL)
Author(s) -
Luan Campos Imbiriba,
Diego Maia Zacardi,
Severino Adriano de Oliveira Lima,
Raniere Garcez Costa Sousa
Publication year - 2021
Publication title -
boletim do instituto de pesca
Language(s) - English
Resource type - Journals
eISSN - 1678-2305
pISSN - 0046-9939
DOI - 10.20950/10.20950/1678-2305/bip.2021.47.e628
Subject(s) - prawn , fishery , fishing , amazon rainforest , biology , ecology
In this study, the length-weight relationships (LWR) were estimated for six fish species captured during prawn fishing in the Lower Amazon region (Pará, Brazil). Prawn fishing boosts the socioeconomic development of riverine communities and is a relevant activity as a source of income and subsistence in this region. In addition, we registered new LWRs for the species Ossancora punctata and Hypoptopoma elongatum. The samplings were performed in prawn catches monthly from February 2018 to January 2019, using a “matapi”, which consists of a semi‑fixed trap that has a galvanized iron structure (2.5 m height by 2.0 m in length) and nylon mesh (1.40 x 1.60 mm mesh), and has two tapered openings to facilitate the entry and trapping of the prawn. The results show that 75% of the fish caught as prawn bycatches had not yet reached sexual maturity. Thus, it is clear that fisheries need to develop fishing gear that allow small fish to escape from the traps during the prawn fishery.