Bycatch and discards in the artisanal shrimp trawl fishery in Northern Peru
This study analyses the bycatch composition of an artisanal shrimp trawl fleet operating between Cabo Blanco and Máncora in Northern Peru between April 2019 and March 2020. A total of 300 hauls were analysed with respect to target catch and bycatch (consisting of other commercial species, discards,...
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2022
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| _version_ | 1881508941312032768 |
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| author | Jaime Mendo Tania Mendo Patricia Gil‐Kodaka Jimmy Martina Iván Gómez Ruggeri Delgado Jhenifer Fernández Alejandra Travezaño Ruggeri Arroyo Karla Loza Mark James |
| author_browse | Alejandra Travezaño Iván Gómez Jaime Mendo Jhenifer Fernández Jimmy Martina Karla Loza Mark James Patricia Gil‐Kodaka Ruggeri Arroyo Ruggeri Delgado Tania Mendo |
| author_facet | Jaime Mendo Tania Mendo Patricia Gil‐Kodaka Jimmy Martina Iván Gómez Ruggeri Delgado Jhenifer Fernández Alejandra Travezaño Ruggeri Arroyo Karla Loza Mark James |
| author_sort | Jaime Mendo |
| collection | Producción científica |
| description | This study analyses the bycatch composition of an artisanal shrimp trawl fleet operating between Cabo Blanco and Máncora in Northern Peru between April 2019 and March 2020. A total of 300 hauls were analysed with respect to target catch and bycatch (consisting of other commercial species, discards, and macroalgae). A total of 277 species were recorded including 111 species of fish, 65 species of molluscs, 51 species of crustaceans, 22 species of algae, 12 species of cnidarian, 9 species of echinoderms, 4 species of Bryozoa and 3 species of polychaeta. Capture per unit effort (CPUE, kg.h-1) was highest for fish, followed by crustaceans, algae and molluscs. The target species Penaeus californiensis coffee shrimp constituted 17.8% of the overall catch,82.2% represented bycatch, and 50.6% represented discards. Coffee shrimps were more abundant in June and November 2019 and in January and February 2020. Highest bycatch CPUE occurred in May, June and December 2019. The most abundant species in the bycatch throughout the study period were sand perch (Diplectrum conceptione, 16% weight of the total catch), the macroalgae caulerpa (Caulerpa filiformis, 13%), sole flounder (Etropus ectenes, 6.4%), Pacific drum (Larimus pacificus, 5.7%), and lumptail searobin (Prionotus stephanophrys, 5.1%). Overall, the contribution of sand perch and flounder, exceeded the weight of coffee shrimp, therefore the interpretation that shrimp is the sole target species needs to be revised. The number of discarded species per month increased towards the spring months with the highest value in November. This study represents the first characterisation of bycatch in the artisanal trawling fishery in the Piura region in northern Peru and reveals a high proportion of bycatch in the fishery but also hints at potential temporal management measures that could be imposed to reduce the levels of bycatch. For example, the months of May and December had the greatest bycatch to shrimp ratios and the fishery could potentially be closed to avoid high bycatch risk, however, longer term information is needed to assess if the trends observed in bycatch are similar over longer periods of time. The species characterisation of bycatch also provides information for the design of modified nets which would target the reduction of small fish present in the catch. |
| format | Article |
| id | oai:cris.upeu.edu.pe:20.500.15037/1042 |
| institution | UPeU |
| language | English |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| record_format | dspace |
| spelling | oai:cris.upeu.edu.pe:20.500.15037/10422026-10-30T16:15:07ZBycatch and discards in the artisanal shrimp trawl fishery in Northern PeruJaime MendoTania MendoPatricia Gil‐KodakaJimmy MartinaIván GómezRuggeri DelgadoJhenifer FernándezAlejandra TravezañoRuggeri ArroyoKarla LozaMark JamesBycatchDiscardsShrimpFisheryBiologyFlounderCatch per unit effortCrustaceanFishingFish <Actinopterygii>BycatchDiscardsShrimpFisheryBiologyFlounderCatch per unit effortCrustaceanFishingFish <Actinopterygii>AnimalsAnimalsAnimalsCoffeeCoffeeCoffeeFisheriesFisheriesFisheriesFishesFishesFishesPerciformesPerciformesPerciformesPeruPeruPeruPenaeidaePenaeidaePenaeidaePhysical Sciences Environmental Science Global and Planetary Change Marine and fisheries researchPhysical Sciences Environmental Science Global and Planetary Change Marine Bivalve and Aquaculture StudiesPhysical Sciences Environmental Science Ecology Coral and Marine Ecosystems StudiesThis study analyses the bycatch composition of an artisanal shrimp trawl fleet operating between Cabo Blanco and Máncora in Northern Peru between April 2019 and March 2020. A total of 300 hauls were analysed with respect to target catch and bycatch (consisting of other commercial species, discards, and macroalgae). A total of 277 species were recorded including 111 species of fish, 65 species of molluscs, 51 species of crustaceans, 22 species of algae, 12 species of cnidarian, 9 species of echinoderms, 4 species of Bryozoa and 3 species of polychaeta. Capture per unit effort (CPUE, kg.h-1) was highest for fish, followed by crustaceans, algae and molluscs. The target species Penaeus californiensis coffee shrimp constituted 17.8% of the overall catch,82.2% represented bycatch, and 50.6% represented discards. Coffee shrimps were more abundant in June and November 2019 and in January and February 2020. Highest bycatch CPUE occurred in May, June and December 2019. The most abundant species in the bycatch throughout the study period were sand perch (Diplectrum conceptione, 16% weight of the total catch), the macroalgae caulerpa (Caulerpa filiformis, 13%), sole flounder (Etropus ectenes, 6.4%), Pacific drum (Larimus pacificus, 5.7%), and lumptail searobin (Prionotus stephanophrys, 5.1%). Overall, the contribution of sand perch and flounder, exceeded the weight of coffee shrimp, therefore the interpretation that shrimp is the sole target species needs to be revised. The number of discarded species per month increased towards the spring months with the highest value in November. This study represents the first characterisation of bycatch in the artisanal trawling fishery in the Piura region in northern Peru and reveals a high proportion of bycatch in the fishery but also hints at potential temporal management measures that could be imposed to reduce the levels of bycatch. For example, the months of May and December had the greatest bycatch to shrimp ratios and the fishery could potentially be closed to avoid high bycatch risk, however, longer term information is needed to assess if the trends observed in bycatch are similar over longer periods of time. The species characterisation of bycatch also provides information for the design of modified nets which would target the reduction of small fish present in the catch.Articlehttps://pubmed.ncbi.nlm.nih.gov/35731721https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0268128&type=printablehttps://doi.org/10.1371/journal.pone.026812810.1371/journal.pone.0268128https://hdl.handle.net/20.500.15037/1042W4283265607enPLoS ONE1932-62032022-06-222026-06-13T09:44:03Z2026-06-13T09:44:03Z |
| spellingShingle | Bycatch Discards Shrimp Fishery Biology Flounder Catch per unit effort Crustacean Fishing Fish <Actinopterygii> Bycatch Discards Shrimp Fishery Biology Flounder Catch per unit effort Crustacean Fishing Fish <Actinopterygii> Animals Animals Animals Coffee Coffee Coffee Fisheries Fisheries Fisheries Fishes Fishes Fishes Perciformes Perciformes Perciformes Peru Peru Peru Penaeidae Penaeidae Penaeidae Physical Sciences Environmental Science Global and Planetary Change Marine and fisheries research Physical Sciences Environmental Science Global and Planetary Change Marine Bivalve and Aquaculture Studies Physical Sciences Environmental Science Ecology Coral and Marine Ecosystems Studies Jaime Mendo Tania Mendo Patricia Gil‐Kodaka Jimmy Martina Iván Gómez Ruggeri Delgado Jhenifer Fernández Alejandra Travezaño Ruggeri Arroyo Karla Loza Mark James Bycatch and discards in the artisanal shrimp trawl fishery in Northern Peru |
| title | Bycatch and discards in the artisanal shrimp trawl fishery in Northern Peru |
| title_full | Bycatch and discards in the artisanal shrimp trawl fishery in Northern Peru |
| title_fullStr | Bycatch and discards in the artisanal shrimp trawl fishery in Northern Peru |
| title_full_unstemmed | Bycatch and discards in the artisanal shrimp trawl fishery in Northern Peru |
| title_short | Bycatch and discards in the artisanal shrimp trawl fishery in Northern Peru |
| title_sort | bycatch and discards in the artisanal shrimp trawl fishery in northern peru |
| topic | Bycatch Discards Shrimp Fishery Biology Flounder Catch per unit effort Crustacean Fishing Fish <Actinopterygii> Bycatch Discards Shrimp Fishery Biology Flounder Catch per unit effort Crustacean Fishing Fish <Actinopterygii> Animals Animals Animals Coffee Coffee Coffee Fisheries Fisheries Fisheries Fishes Fishes Fishes Perciformes Perciformes Perciformes Peru Peru Peru Penaeidae Penaeidae Penaeidae Physical Sciences Environmental Science Global and Planetary Change Marine and fisheries research Physical Sciences Environmental Science Global and Planetary Change Marine Bivalve and Aquaculture Studies Physical Sciences Environmental Science Ecology Coral and Marine Ecosystems Studies |
| topic_facet | Bycatch Discards Shrimp Fishery Biology Flounder Catch per unit effort Crustacean Fishing Fish <Actinopterygii> Bycatch Discards Shrimp Fishery Biology Flounder Catch per unit effort Crustacean Fishing Fish <Actinopterygii> Animals Animals Animals Coffee Coffee Coffee Fisheries Fisheries Fisheries Fishes Fishes Fishes Perciformes Perciformes Perciformes Peru Peru Peru Penaeidae Penaeidae Penaeidae Physical Sciences Environmental Science Global and Planetary Change Marine and fisheries research Physical Sciences Environmental Science Global and Planetary Change Marine Bivalve and Aquaculture Studies Physical Sciences Environmental Science Ecology Coral and Marine Ecosystems Studies |
| url | https://pubmed.ncbi.nlm.nih.gov/35731721 https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0268128&type=printable https://doi.org/10.1371/journal.pone.0268128 https://hdl.handle.net/20.500.15037/1042 |
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