Results 21 to 30 of about 6,192 (301)
ON THE FORM AND THE TENSION OF PURSE LINE OF A PURSE SEINE
NIPPON SUISAN GAKKAISHI, 1961 In order to find out the most fruitful method for studying the state of the purse seine in operation, the test were made in the water with under-water current on 1/150 and 1/50 scale models by Tauti's principle and the real seine. The results obtained from those experiments are as follows: 1) As shown in Fig.
Kazumi ISHII, Tuneo KONAGAYA
openaire +2 more sources
Journal of Marine Science and Engineering, 2021 Japanese sardine (Sardinops melanostictus) is a significant small pelagic fish and a valuable resource that plays an essential ecological role in the marine ecosystem.
Ousmane Sarr +2 more
doaj +1 more source
SEARCH BEHAVIOR IN THE PURSE SEINE TUNA FISHERY
Natural Resource Modeling, 1993 A purse seine vessel cruises in search of schools of tuna during daylight hours, attempting to locate fish by observing surface water disturbance, sea bird activity, or floating objects. The purpose of this paper is to examine the two hypotheses advanced by Doulman: that the Japanese vessels have a greater tendency to fish as a fleet than the US ...
Campbell, H. F. +2 more
openaire +3 more sources
Frontiers in Marine Science, 2023 Bycatch is the leading global threat to cetaceans, with at least 300,000 cetaceans estimated to be killed each year in fisheries. Regional fisheries management organizations (RFMOs) are key actors in global fisheries management, including bycatch ...
Brianna Elliott +2 more
doaj +1 more source
Size of Peruvian small purse seines.
NIPPON SUISAN GAKKAISHI, 1989 The size of Peruvian small purse seines was examined applying the size of anchovy purse seine. Also, a comparison between Peruvian and Japanese purse seines was undertaken. The size adopted was the overall length (Loa; ft) and gross tonnage (GT; t) of the fishing boat, and float line length (Lf; fm), net height (He; fm) and net area (A; fm2) for the ...
Tadanobu Machii, Yukio Nose
openaire +2 more sources
Hydrodynamic characteristics of knotted and knotless purse seine netting panels as determined in a flume tank. [PDF]
PLoS ONE, 2018 Nylon (PA) netting is widely used in purse seines and other fishing gears due to its high strength and good sinking performance. However, hydrodynamic properties of nylon netting of different characteristics are poorly understood. This study investigated
Hao Tang, Liuxiong Xu, Fuxiang Hu
doaj +1 more source
PLoS ONE, 2019 Stress to fish during harvest in wild capture fisheries is known to negatively influence subsequent survival in catches that are released. Therefore, if fisheries are to be conducted sustainably, there is a need to promote good fish welfare during the ...
Neil Anders +5 more
doaj +1 more source
Interannual variability of fisheries economic returns and energy ratios is mostly explained by gear type. [PDF]
PLoS ONE, 2013 According to portfolio theory applied to fisheries management, economic returns are stabilised by harvesting in a portfolio stocks of species whose returns are negatively correlated and for which the portfolio economic return variance is smaller than the
Verena M Trenkel +3 more
doaj +1 more source
Jurnal Ilmiah Perikanan dan Kelautan, 2021 Highlight Research • The fishing area of S. leptolepis in this study was confirmed to be located in Tomini Bay • The fish samples were gathered randomly from fishers' catch using purse seines • The growth curve for the male and female fish data were both
Nuralim Pasisingi +2 more
doaj +1 more source
NIPPON SUISAN GAKKAISHI, 1966 The experiments were carried out using model nets of different construction. The effect of time, from the laying of the net till the start of pursing (waiting time), and that of the direction of current on the working depth were observed. The results are summarized as follows: 1) The bottom margin of the net achieved maximum working depth at the 4/10 ...
openaire +6 more sources