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Use of a semi-pelagic trawl in a tropical demersal trawl fishery
Fisheries Research, 1993Abstract A fork rigged semi-pelagic trawl was modified to meet Australian regulations and its performance was evaluated against that of a demersal trawl commonly used in a tropical trawl fishery. The catch rates and sizes of commercial species (mainly Lutjanus spp.) and production costs were found to be similar in both nets.
David C. Ramm +3 more
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The effect of trawl speed on the footrope capture efficiency of a survey trawl
Fisheries Research, 2002The effect of speed through water on the footrope capture efficiency of a survey bottom trawl was experimentally investigated by repetitively towing at three vessel speeds (2.5, 3.0 and 3.5 knots) with an auxiliary net attached underneath the trawl footrope to capture fish escaping beneath the trawl.
Kenneth L Weinberg +2 more
openaire +1 more source
2006
Seçicilik ızgaraları, başta troller olmak üzere bir çok av aracında tür ve boy seçiciliğini geliştirmek için kullanılan özel seçici cihazlara denir. Bu çalışmada, son yıllarda kullanım alanı giderek artan ve bazı ülkelerde yasalarla zorunlu hale getirilen ızgaralarının yapısal özellikleri, boyutlandırılması ve donatımı üzerinde ...
AYDIN, Celalettin, TOSUNOĞLU, Zafer
openaire +2 more sources
Seçicilik ızgaraları, başta troller olmak üzere bir çok av aracında tür ve boy seçiciliğini geliştirmek için kullanılan özel seçici cihazlara denir. Bu çalışmada, son yıllarda kullanım alanı giderek artan ve bazı ülkelerde yasalarla zorunlu hale getirilen ızgaralarının yapısal özellikleri, boyutlandırılması ve donatımı üzerinde ...
AYDIN, Celalettin, TOSUNOĞLU, Zafer
openaire +2 more sources
2019
Bottom Trawling. One of the most common ways to catch fish is by dragging nets along the seafloor. This causes changes in the plants and animals that live there. When the same areas are trawled frequently, the community on the seafloor can be drastically changed. Long-lived species such as corals and sponges are severely affected.
Ray Hilborn, Ulrike Hilborn
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Bottom Trawling. One of the most common ways to catch fish is by dragging nets along the seafloor. This causes changes in the plants and animals that live there. When the same areas are trawled frequently, the community on the seafloor can be drastically changed. Long-lived species such as corals and sponges are severely affected.
Ray Hilborn, Ulrike Hilborn
openaire +1 more source
One-boat midwater trawling with unequal panelled trawl
1983Results of the comparative efficiency studies with 10.5 m equal panelled and 10.3 m unequal panelled midwater trawls operated from 10.9 m wooden trawler are presented. Out of the two nets, the latter proved to be relatively good for the capture of off bottom and column fishes like pomfrets, seer, lactarius, catfish, silver bar, ribbon fish and an ...
Mhalathkar, H.N. +3 more
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