Identification and evaluation of shark bycatch in Georgia’s commercial shrimp trawl fishery with implications for management

Abstract Fish that are incidentally caught by shrimp trawling represent a predictable and abundant resource for feeding several bird species, especially for the gull Larus dominicanus. This fishing activity is subject to disruptions throughout the year during closed fishing seasons, when other fishing modalities are exercised, which can alter the composition, abundance and size of the fish bycatch. This study evaluated the influence of the restriction of fishing period of shrimp (closed season) on the diet of L. dominicanus, on the Paraná State coast. From December 2013 to August 2014, 10 pellets were collected per month in two distinct areas that have shrimp trawl fishery as the main economic activity: one continental and another in an estuarine island. In total, 920 fish were identified, divided into four families and 15 species, especially the family Sciaenidae with 11 species. There were differences in abundance and biomass of species between areas and between seasons of pre-closure, closure and post-closure. Differences for the mean total length of the species were only detected between the pre-closed and closed seasons in one area. This study evidenced the strong relationship between L. dominicanus and the shrimp trawl fishery, the species composition identified in the pellets and their respective morphometric measurements follow the same pattern of the literature for fish discarded in trawling activities.

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Reducing bycatch in the United States Gulf of Mexico shrimp trawl fishery with an emphasis on red snapper bycatch reduction

Fisheries Research ◽

10.1016/j.fishres.2015.02.009 ◽

2015 ◽

Vol 167 ◽

pp. 210-215 ◽

Cited By ~ 4

Author(s):

Glenn R. Parsons ◽

Daniel G. Foster

Keyword(s):

United States ◽

Gulf Of Mexico ◽

The United States ◽

Red Snapper ◽

Trawl Fishery ◽

Bycatch Reduction ◽

Shrimp Trawl

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Comparison of a rigid grid to a square-mesh panel in size selection for commercial fishing in the Persian Gulf shrimp trawl fishery

Journal of Applied Ichthyology ◽

10.1111/jai.13148 ◽

2016 ◽

Vol 32 (6) ◽

pp. 1026-1031 ◽

Cited By ~ 1

Author(s):

M. Eighani ◽

S. Y. Paighambari ◽

S. Eayrs

Keyword(s):

Persian Gulf ◽

Commercial Fishing ◽

Size Selection ◽

Trawl Fishery ◽

Shrimp Trawl ◽

Selection For ◽

The Persian Gulf

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New records of Hippocampus patagonicus Piacentino & Luzzatto, 2004 (Teleostei: Syngnathidae) from the coast of Paraná, southern Brazil

Check List ◽

10.15560/12.1.1822 ◽

2016 ◽

Vol 12 (1) ◽

pp. 1822

Author(s):

Luci F. Pereira ◽

Rosana B. Silveira ◽

Vinícius Abilhoa

Keyword(s):

New Records ◽

Conservation Strategies ◽

Brazilian Coast ◽

Southwestern Atlantic ◽

Southern Brazil ◽

Incidental Capture ◽

Additional Information ◽

Trawl Fishery ◽

Shrimp Trawl ◽

Management And Conservation

Abstract: The seahorse Hippocampus patagonicus (Teleostei: Syngnathidae) is the southernmost occurring species of its genus in the South Atlantic Ocean. Its distribution seems to be restricted to the Southwestern Atlantic, along the coasts of Argentina and Brazil. Herein we report the incidental capture of six individuals as bycatch in the shrimp trawl fishery off the coast of Paraná, southern Brazil. Additional information on the geographic distribution of H. patagonicus, together with its ecology and life history, is important for conservation of this threatened species. These data can promote the development of appropriate management and conservation strategies for populations along the Brazilian coast.

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Assessing the vulnerability of demersal elasmobranchs to a data-poor shrimp trawl fishery in Costa Rica, Eastern Tropical Pacific

Biological Conservation ◽

10.1016/j.biocon.2017.11.015 ◽

2018 ◽

Vol 217 ◽

pp. 321-328 ◽

Cited By ~ 7

Author(s):

Tayler M. Clarke ◽

Mario Espinoza ◽

Raquel Romero Chaves ◽

Ingo S. Wehrtmann

Keyword(s):

Costa Rica ◽

Tropical Pacific ◽

Eastern Tropical Pacific ◽

Trawl Fishery ◽

Shrimp Trawl

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How is artificial lighting affecting the catches in deep water rose shrimp trawl fishery of the Central Mediterranean sea? [Ocean Coast Manag., 215, 1 December 2021, 105970]

Ocean & Coastal Management ◽

10.1016/j.ocecoaman.2021.106005 ◽

2022 ◽

Vol 217 ◽

pp. 106005

Author(s):

Michele L. Geraci ◽

Francesco Colloca ◽

Federico Di Maio ◽

Fabio Falsone ◽

Fabio Fiorentino ◽

...

Keyword(s):

Mediterranean Sea ◽

Deep Water ◽

Central Mediterranean ◽

Artificial Lighting ◽

Trawl Fishery ◽

Shrimp Trawl ◽

Central Mediterranean Sea

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Mesh Selectivity of the Shrimp Trawl Fishery in the Western Coastal Waters of Sri Lanka

Asian Fisheries Science ◽

10.33997/j.afs.2009.22.3.009 ◽

2010 ◽

Vol 22 (3) ◽

Author(s):

P.A.A.T. JAYAWARDANE

Keyword(s):

Sri Lanka ◽

Coastal Waters ◽

Trawl Fishery ◽

Shrimp Trawl

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Mollusk bycatch in trawl fisheries targeting the Atlantic seabob shrimp Xiphopenaeus kroyeri on the coast of Sergipe, northeastern Brazil

Papéis Avulsos de Zoologia ◽

10.11606/1807-0205/2019.59.33 ◽

2019 ◽

Vol 59 ◽

pp. e20195933

Author(s):

Luana Marina De Castro Mendonça ◽

Carmen Regina Parisotto Guimarães ◽

Silvio Felipe Barbosa Lima

Keyword(s):

Northeastern Brazil ◽

Sampling Effort ◽

Frequency Of Occurrence ◽

Trawl Fishery ◽

Shrimp Trawl ◽

Xiphopenaeus Kroyeri ◽

Negative Impacts ◽

Richness Estimators ◽

Lolliguncula Brevis ◽

Trawl Fisheries

The malacofauna bycatch of sea-bob shrimp Xiphopenaeus kroyeri (Heller, 1862) trawl fisheries on the coast of Sergipe was studied for 5 years. The malacofauna bycatch considered was obtained in nine oceanographic sampling campaigns carried out between May 1999 and June 2003 in 18 stations distributed in six transects along depths of 10, 20 and 30 m. A total of 2,669 individuals of mollusk belonging to 54 species were captured on the 18 sea-bob shrimp trawl stations carried out along the coast of Sergipe. The considerable richness of mollusks was composed by 19 families and 31 species of gastropods, 12 families and 19 species of bivalves and 2 families and 4 species of cephalopods. The highest abundance were observed at stations 13 (373 individuals) and 16 (685 individuals) that represents the lowest depth (10 m) and the richness was higher at stations 15 and 12 (17 and 11 species, respectively) both located at the highest depth (30 m). Cephalopods had high frequency of occurrence being collected in all the stations and by far the most abundant group with a total of 2,488 individuals captured. On the other hand, gastropods (with 142 individuals found in 83.3% of stations) and bivalves (about 1% of the individuals collected) contribute with a much smaller percentage of individuals captured. Lolliguncula brevis (Blainville, 1823) was most representative cephalopod in number and frequency of occurrence. Arcidae, Conidae, Muricidae and Strombidae were the families with the higher number of species in the trawl-fishery. Among bivalves, Pitar arestus (Dall & Simpson, 1901) and Spathochlamys benedicti (Verrill & Bush [in Verrill], 1897) were the species with higher frequency of occurrence. Although the considerable sample effort and a number of mollusks captured as bycath, the richness estimators indicated that the species richness could increase with additional sampling effort in the study area. The present study expands the taxonomic alpha knowledge on the mollusk bycatch of sea-bob shrimp trawl fisheries on the northeastern coast of Brazil. However, it is of crucial importance to assess urgently the negative impacts of the sea-bob shrimp trawl fisheries on the benthic community of the entire coast of Brazil.

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