A Comparison Between Actual and Reported Angling Times
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A t-test showed that actual and reported mean times spent angling by parties during each month of a creel survey on a lake in Alberta were not significantly different. A paired t-test showed no significant difference in means between the actual time and the reported time spent angling by parties which caught one or more fish and by parties which caught no fish. Any differences found are attributed to sampling. It is concluded that when one uses reported times in creel surveys, he must first determine if any significant difference exists between reported and actual mean times over an extended period of time before applying a correction factor to the reported catch ratio data.The fishing strategies in the Bangweulu Swamps, Northern Zambia, are described and analysed based on the data obtained from a three month field study in 1983. At the Muilika fishing camp, situated in the' center of the Swamps, six fishing methods were employed by a total of 19fishing units consisting of27 fishermen. A comparison was made of the fishing effort allocated to the six fishing methods by these 19 units. In spite of a difference found in the allocation pattern of fishing effort, no significant difference in fishing efficiency was found among the fishing units . For ukusakila (fish-driving method), comparisons of efficiencies were made between the two variations of ukusakila method, among various sizes of co-fishing group, and among fishing units, none of which showed a significant difference. It is suggested that overall fishing efficiencies are levelled out in the long run by the fishermen who disperse their effort to diflerent strategies and cooperate in using a small fishing ground so as not to reduce efficiencies. In group fishing, a social factor based on kinship ties is also important, although it may not be directly relevant to the optimization of fishing efliciency.
Swamp
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This chapter contains sections titled: Introduction Fishing gears Passive fishing gears Active fishing gears Gear selectivity and ecosystem effects of fishing Management considerations: selectivity and other ecosystem effects of fishing Synthesis and outlook Sources and recommended reading
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CHAPTEE X
Artisanal fishing
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Experimental fishing was carried out to compare and analyze catch characteristics of shrimp beam trawl in a fishing area and a non-fishing area during the period of fishing season and off-fishing season in the coastal waters of Geoje. A commercial fishing boat (4.99 tons) was used for the test fishing. The amount of total catches were 14,654g in the fishing area and 12,359g in the non-fishing area, shrimp catches of non-fishing area were much greater than that of the fishing area during the period of off-fishing season (June and August). However, total catches were 27,670g in the fishing area and 33,004g in the non-fishing area, shrimp catches of fishing area were bigger than that of non-fishing area during the period of fishing season (October and December). On the results of the study, catches characteristics between fishing area and non-fishing area showed the reversed results for the period of fishing season and off-fishing season.
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In order to realize the rapid restoration of fishery resources in the east China sea, the government of Zhejiang province facing history, the special activities to combat illegal fishing vessels, achieved great achievements, but because of a large number of fishing tools and fishing methods, fishing tools and fishing methods have become a short board. Therefore, the author analyzes the realistic situation of the use of fishing tools and methods in the east China sea fishing ground, analyzes the existing problems and causes, and puts forward some countermeasures to enhance and improve management of the Donghai fishing ground fishing tools and fishing methods.
China sea
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The objective of this paper was to study angling from September, 2002 to September, 2004 in the Lobo-Broa Reservoir, Itirapina, SP (22° 15' S and 47° 49' W). Interviews (total 1,027) with sport fishers were accomplished in the three main fishing sites (Horto, Píer and Praia). This fishing was practiced with a simple fishing rod and reel, mainly in Horto, where the catches and fishing effort were higher. The catches were mainly composed of Cichlidae (Geophagus brasiliensis, Oreochromis niloticus, Tilapia rendalli and Cichla monoculus). We tried to determine which factors (fishing sites, type of baits and season) and the covariate fishing effort, expressed in number of fishing rods multiplied by fishing time, would affect catches, using a 3 way-ANCOVA. The final model showed that only fishing sites and effort determined the captures of sporting fishing in the reservoir. Some measures for managing fishing practices are discussed.
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Tiger
Penaeus
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Marine and freshwater fishing gear and methods are described from the lower Mesopotamian plain. In this region, there are four main fishing methods in the marshlands and three in the local marine habitat. The most popular fishing technique in those areas is the use of nets. Both active and passive fishing gear are categorised in the studied area. Locally-designed fishing methods by Marsh Arabs are also described. Although the Marsh Arabs seem to stick to the traditional fishing gear and methods, such gear is not efficient enough to provide a catch that can maintain better income for the fishers. To the contrary, fishers operating in the marine habitat of the lower Mesopotamian plain use fairly up-to-date fishing gear and techniques. The marshland restoration plan through its ecocultural restoration steps will save the tradition and heritage of the Marsh Arabs in particular and the Iraqis in general by enabling the fishers to use their traditional fishing methods and gear whenever these are compatible with good conservation practices. The effect of each type of fishing gear and methods is discussed from a conservation point of view. In addition, several conservation issues were raised and discussed, i.e. non-target animals and by-catch. Nontarget animals were usually associated with the target animals and were usually caught with them and then destroyed. By-catch is usually thrown away into the sea or left on the bank of the marshlands after the net is pulled out. Responsibility for checking mesh size and issuing fishing licences at the present time is loose and not controlled. Fishers in both marshlands and marine habitat are currently working without any regulations.
Artisanal fishing
Marine conservation
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