Underwater observations on fish behavior to determine the coefficient of catchability for Danish seine
Underwater observations were conducted to assess the impact of the research Danish seine elements on behavior of walleye pollock Theragra chalcogramma in its active zone. The underwater video equipment was installed on specially designed and constructed experimental platform and on elements of the D...
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| Format: | Article |
| Language: | Russian |
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Transactions of the Pacific Research Institute of Fisheries and Oceanography
2016-12-01
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| Series: | Известия ТИНРО |
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| Online Access: | https://izvestiya.tinro-center.ru/jour/article/view/158 |
| _version_ | 1797696665029705728 |
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| author | Ivan V. Roy |
| author_facet | Ivan V. Roy |
| author_sort | Ivan V. Roy |
| collection | DOAJ |
| description | Underwater observations were conducted to assess the impact of the research Danish seine elements on behavior of walleye pollock Theragra chalcogramma in its active zone. The underwater video equipment was installed on specially designed and constructed experimental platform and on elements of the Danish seine. In the experiment with pollock, the experimental platform demonstrated its low efficiency, however, it could be used for observations on sedentary benthic organisms on homogeneous soils without sharp changes in the terrain. With the equipment installed directly on the Danish seine, high efficiency of the seine ropes was observed: up to 92 % of fish from encircled volume remained in the towed area. Taking into account this estimation and features of fish biomass distribution, the coefficient of catchability for Danish seine is determined as 0.40 ± 0.15. |
| first_indexed | 2024-03-12T03:28:39Z |
| format | Article |
| id | doaj.art-2cf5cf31b4d2419facf386c135470b30 |
| institution | Directory Open Access Journal |
| issn | 1606-9919 2658-5510 |
| language | Russian |
| last_indexed | 2024-03-12T03:28:39Z |
| publishDate | 2016-12-01 |
| publisher | Transactions of the Pacific Research Institute of Fisheries and Oceanography |
| record_format | Article |
| series | Известия ТИНРО |
| spelling | doaj.art-2cf5cf31b4d2419facf386c135470b302023-09-03T13:29:20ZrusTransactions of the Pacific Research Institute of Fisheries and OceanographyИзвестия ТИНРО1606-99192658-55102016-12-01187423324410.26428/1606-9919-2016-187-233-244158Underwater observations on fish behavior to determine the coefficient of catchability for Danish seineIvan V. Roy0Всероссийский научно-исследовательский институт рыбного хозяйства и океанографииUnderwater observations were conducted to assess the impact of the research Danish seine elements on behavior of walleye pollock Theragra chalcogramma in its active zone. The underwater video equipment was installed on specially designed and constructed experimental platform and on elements of the Danish seine. In the experiment with pollock, the experimental platform demonstrated its low efficiency, however, it could be used for observations on sedentary benthic organisms on homogeneous soils without sharp changes in the terrain. With the equipment installed directly on the Danish seine, high efficiency of the seine ropes was observed: up to 92 % of fish from encircled volume remained in the towed area. Taking into account this estimation and features of fish biomass distribution, the coefficient of catchability for Danish seine is determined as 0.40 ± 0.15.https://izvestiya.tinro-center.ru/jour/article/view/158снюрреводный ловкоэффициент уловистостиурез снюрреводаминтайэкспериментподводные наблюденияреакция рыбповедение рыб |
| spellingShingle | Ivan V. Roy Underwater observations on fish behavior to determine the coefficient of catchability for Danish seine Известия ТИНРО снюрреводный лов коэффициент уловистости урез снюрревода минтай эксперимент подводные наблюдения реакция рыб поведение рыб |
| title | Underwater observations on fish behavior to determine the coefficient of catchability for Danish seine |
| title_full | Underwater observations on fish behavior to determine the coefficient of catchability for Danish seine |
| title_fullStr | Underwater observations on fish behavior to determine the coefficient of catchability for Danish seine |
| title_full_unstemmed | Underwater observations on fish behavior to determine the coefficient of catchability for Danish seine |
| title_short | Underwater observations on fish behavior to determine the coefficient of catchability for Danish seine |
| title_sort | underwater observations on fish behavior to determine the coefficient of catchability for danish seine |
| topic | снюрреводный лов коэффициент уловистости урез снюрревода минтай эксперимент подводные наблюдения реакция рыб поведение рыб |
| url | https://izvestiya.tinro-center.ru/jour/article/view/158 |
| work_keys_str_mv | AT ivanvroy underwaterobservationsonfishbehaviortodeterminethecoefficientofcatchabilityfordanishseine |