Discards in bottom-trawl fishery in the western Black Sea (Turkey)
The aim of this study was to estimate the discards of target and non-target species from bottom trawlers (rhombic and 40mm cod end mesh size nets) in the Black Sea. On-board sampling was conducted on the southwestern coasts of the Black Sea in the fishing ports of Rumelifeneri and Igneada for a tota...
Published in: | Journal of Applied Ichthyology |
---|---|
Main Authors: | , |
Other Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2017
|
Subjects: | |
Online Access: | https://hdl.handle.net/20.500.12627/116561 https://doi.org/10.1111/jai.13362 |
id |
ftistanbuluniv:oai:http://acikerisim.istanbul.edu.tr:20.500.12627/116561 |
---|---|
record_format |
openpolar |
spelling |
ftistanbuluniv:oai:http://acikerisim.istanbul.edu.tr:20.500.12627/116561 2023-05-15T18:15:50+02:00 Discards in bottom-trawl fishery in the western Black Sea (Turkey) Karakulak, F. S. Yildiz, Taner İstanbul Üniversitesi , , 62144 2017 https://hdl.handle.net/20.500.12627/116561 https://doi.org/10.1111/jai.13362 eng eng JOURNAL OF APPLIED ICHTHYOLOGY Yildiz T., Karakulak F. S. , "Discards in bottom-trawl fishery in the western Black Sea (Turkey)", JOURNAL OF APPLIED ICHTHYOLOGY, cilt.33, ss.689-698, 2017 0175-8659 vv_1032021 av_aeb7dc21-2c32-454d-95d2-7eb4901d3625 http://hdl.handle.net/20.500.12627/116561 https://doi.org/10.1111/jai.13362 33 4 689 698 Su Hasadı Su Ürünleri Ziraat Toprak ve Su Muhafazası ve Amenajmanı Toprak ve Bitki Besleme Tarımsal Bilimler DENİZ VE TATLISU BİYOLOJİSİ Tarım ve Çevre Bilimleri (AGE) Bitki ve Hayvan Bilimleri BALIKÇILIK Makale 2017 ftistanbuluniv https://doi.org/20.500.12627/116561 https://doi.org/10.1111/jai.13362 2022-08-10T13:05:14Z The aim of this study was to estimate the discards of target and non-target species from bottom trawlers (rhombic and 40mm cod end mesh size nets) in the Black Sea. On-board sampling was conducted on the southwestern coasts of the Black Sea in the fishing ports of Rumelifeneri and Igneada for a total of 66 hauls on two commercial bottom trawlers from October 2012 to April 2013 and from October 2013 to April 2014. A total of 32 species were captured, including 25 species of fish, three crustacea, two echinodermata and two mollusca. Mullus barbatus and Merlangius merlangus euxinus were the target species, whereas 24 species were always discarded. Scophthalmus maximus and Pomatomus saltatrix were always retained. The two regions were similar in terms of catch and discard compositions, CPUE, DPUE and discard ratio. Discarding is important in the Black Sea commercial bottom trawl fishery and accounts for as much as 31.4% of the total bottom trawl catch. The results showed that the discard rates varied among species, depths (p=.04) and seasons (p=.0001). Finally, it was concluded that in the western Black Sea, when the impacts of depth and season are considered, that the discard quantity can be reduced. Article in Journal/Newspaper Scophthalmus maximus İstanbul Üniversitesi Açık Erişim Sistemi Journal of Applied Ichthyology 33 4 689 698 |
institution |
Open Polar |
collection |
İstanbul Üniversitesi Açık Erişim Sistemi |
op_collection_id |
ftistanbuluniv |
language |
English |
topic |
Su Hasadı Su Ürünleri Ziraat Toprak ve Su Muhafazası ve Amenajmanı Toprak ve Bitki Besleme Tarımsal Bilimler DENİZ VE TATLISU BİYOLOJİSİ Tarım ve Çevre Bilimleri (AGE) Bitki ve Hayvan Bilimleri BALIKÇILIK |
spellingShingle |
Su Hasadı Su Ürünleri Ziraat Toprak ve Su Muhafazası ve Amenajmanı Toprak ve Bitki Besleme Tarımsal Bilimler DENİZ VE TATLISU BİYOLOJİSİ Tarım ve Çevre Bilimleri (AGE) Bitki ve Hayvan Bilimleri BALIKÇILIK Karakulak, F. S. Yildiz, Taner Discards in bottom-trawl fishery in the western Black Sea (Turkey) |
topic_facet |
Su Hasadı Su Ürünleri Ziraat Toprak ve Su Muhafazası ve Amenajmanı Toprak ve Bitki Besleme Tarımsal Bilimler DENİZ VE TATLISU BİYOLOJİSİ Tarım ve Çevre Bilimleri (AGE) Bitki ve Hayvan Bilimleri BALIKÇILIK |
description |
The aim of this study was to estimate the discards of target and non-target species from bottom trawlers (rhombic and 40mm cod end mesh size nets) in the Black Sea. On-board sampling was conducted on the southwestern coasts of the Black Sea in the fishing ports of Rumelifeneri and Igneada for a total of 66 hauls on two commercial bottom trawlers from October 2012 to April 2013 and from October 2013 to April 2014. A total of 32 species were captured, including 25 species of fish, three crustacea, two echinodermata and two mollusca. Mullus barbatus and Merlangius merlangus euxinus were the target species, whereas 24 species were always discarded. Scophthalmus maximus and Pomatomus saltatrix were always retained. The two regions were similar in terms of catch and discard compositions, CPUE, DPUE and discard ratio. Discarding is important in the Black Sea commercial bottom trawl fishery and accounts for as much as 31.4% of the total bottom trawl catch. The results showed that the discard rates varied among species, depths (p=.04) and seasons (p=.0001). Finally, it was concluded that in the western Black Sea, when the impacts of depth and season are considered, that the discard quantity can be reduced. |
author2 |
İstanbul Üniversitesi , , 62144 |
format |
Article in Journal/Newspaper |
author |
Karakulak, F. S. Yildiz, Taner |
author_facet |
Karakulak, F. S. Yildiz, Taner |
author_sort |
Karakulak, F. S. |
title |
Discards in bottom-trawl fishery in the western Black Sea (Turkey) |
title_short |
Discards in bottom-trawl fishery in the western Black Sea (Turkey) |
title_full |
Discards in bottom-trawl fishery in the western Black Sea (Turkey) |
title_fullStr |
Discards in bottom-trawl fishery in the western Black Sea (Turkey) |
title_full_unstemmed |
Discards in bottom-trawl fishery in the western Black Sea (Turkey) |
title_sort |
discards in bottom-trawl fishery in the western black sea (turkey) |
publishDate |
2017 |
url |
https://hdl.handle.net/20.500.12627/116561 https://doi.org/10.1111/jai.13362 |
genre |
Scophthalmus maximus |
genre_facet |
Scophthalmus maximus |
op_relation |
JOURNAL OF APPLIED ICHTHYOLOGY Yildiz T., Karakulak F. S. , "Discards in bottom-trawl fishery in the western Black Sea (Turkey)", JOURNAL OF APPLIED ICHTHYOLOGY, cilt.33, ss.689-698, 2017 0175-8659 vv_1032021 av_aeb7dc21-2c32-454d-95d2-7eb4901d3625 http://hdl.handle.net/20.500.12627/116561 https://doi.org/10.1111/jai.13362 33 4 689 698 |
op_doi |
https://doi.org/20.500.12627/116561 https://doi.org/10.1111/jai.13362 |
container_title |
Journal of Applied Ichthyology |
container_volume |
33 |
container_issue |
4 |
container_start_page |
689 |
op_container_end_page |
698 |
_version_ |
1766189062465519616 |