Results 21 to 30 of about 32,183 (242)

Study on Dynamic Characteristics and Fracture Failure of Rigid Truss Trawl System During Towing Process

Journal of Marine Science and Engineering
Deep-sea fisheries depend on various fishing methods, including trawling, purse seining, and longline fishing, among others. Studying the dynamic characteristics of trawling operations is essential for the trawl mechanism.
Dapeng Zhang, Bowen Zhao, Yi Zhang, Keqiang Zhu, Jin Yan   +4 more
doaj   +2 more sources

One-boat midwater trawling with unequal panelled trawl [PDF]

, 1983
Results 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., Vijayan, V., Mathai, T.J., George, T.P.   +3 more
openaire   +4 more sources

FEATURES OF FISH BEHAVIOR IN THE ACTION ZONE OF MIDWATER TRAWL

Vestnik of Astrakhan State Technical University. Series: Fishing industry, 2017
Researches in the field of behavior and distribution of fish at different stages of fishing were conducted using midwater trawls in order to increase fishing efficiency, subject to the fact that, besides fish behavior, parameters of midwater trawls and types of trawling affect the efficiency of trawling.
Alexander Victorovich Melnikov, Dmitry Alekseevich Okunev, Svetlana Nikolaevna Khusainova   +2 more
openaire   +2 more sources

IDEALIZING THE DESIGN MODEL OF THE ROPE PART OF THE MIDWATER TRAWL

Vestnik of Astrakhan State Technical University. Series: Fishing industry, 2018
The article presents a perspective approach to the analysis of a stress state of net gear. A set of assumptions and simplifications of determining the forces acting on the end part of the trawl have been proposed. In terms of strength analysis of the trawl gear elements, the rope section deserves a thorough study, since the rope section elements are ...
T. L. Chemakina
openaire   +3 more sources

Studies on bridle lengths in one-boat midwater trawling [PDF]

, 1982
Investigation on the comparative fishing trials to study the effect of bridles for a 10.5 m four equal panelled one-boat midwater trawl are described. Three bridle lengths of 20, 30 and 40 m were tested for relative efficiency evaluation. 30m bridles are found to be more suitable for the particular design and arbitrary selection of bridle lengths would
Mhalathkar, H.N., Ramarao, S.V.S., Mathai, P.G.   +2 more
openaire   +4 more sources

Time-varying flow-ecology relationships for an endangered fish population: Longfin Smelt in the San Francisco Estuary. [PDF]

Ecol Appl
Abstract Major estuaries globally are experiencing fast‐paced changes in hydrology and ecosystem dynamics. However, connecting alteration of river flow regimes to estuarine fish population dynamics remains a challenge, partly due to the untested assumption that flow regimes, fish dynamics, and the resulting flow–ecology relationships are stationary (i ...
Saffarinia P, Hobbs JA, Carlson SM, Ruhí A.   +3 more
europepmc   +2 more sources

Identification of three cephalopods from the Iranian waters of the Gulf of Oman (Continental shelf area) [PDF]

Iranian Journal of Animal Biosystematics, 2021
This study aimed to find new species of cephalopods in the Iranian waters of the Gulf of Oman. Two species of Oegopsida (Abralia steindachneri Weindl, 1912 and Joubiniteuthis portieri (Joubin, 1916)) and also one species of Sepiida (Sepia omani Adam ...
Reza Badali, Seyyed Yousef Paighambari, Parviz Zare, Reza Abbaspour Naderi   +3 more
doaj   +1 more source

Experimental studies of a midwater trawl 18/95 m in the Vishtynets Lake

Problems of fisheries, 2023
The article presents the first experimental data on the operation of a mid-depth trawl 18/95 m for catching vendace (Coregonus albula) in Lake Vishtynets, Kaliningrad Region.
А.О А.А. Недоступ, П.В Ражев, Насенков Е.Е, В.В Львова, Д.В Сысенко, И.С Аскаров, Белозёр   +6 more
semanticscholar   +1 more source

Methods of Bidirectional Interpolation and Finite Volume Element for Surface Reconstruction and Volume Calculation of Midwater Trawl

Journal of Physics: Conference Series, 2023
The spatial surface of the midwater trawl was reconstructed with combined interpolation methods of cubic spline, cubic Heimite and polar-coordinate periodic spline interpolation.
Xinfeng Zhang, F. Hu, Jian Zhang, X. Qu, Weiguo Qian, Yunwei Zhang   +5 more
semanticscholar   +1 more source

Catch Pattern for Antarctic krill (Euphausia superba) of Different Commercial Trawls in Similar Times and Overlapping Fishing Grounds

Frontiers in Marine Science, 2021
Antarctic krill (Euphausia superba) is harvested using different design midwater trawls. Knowing the selective properties between trawls is crucial information for the management of the krill resources.
Zhongqiu Wang, Hao Tang, Hao Tang, Hao Tang, Hao Tang, Hao Tang, Bent Herrmann, Bent Herrmann, Bent Herrmann, Liuxiong Xu, Liuxiong Xu, Liuxiong Xu, Liuxiong Xu, Liuxiong Xu   +13 more
doaj   +1 more source