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11. Management strategy
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Restrictions to net usage : Fishing activity is at its peak during the monsoon season. A majority of the total fish catch is during the monsoon season. Since monsoon is the breeding season for most of the fishes, it is advisable to ban fishing of native fishes. This can be achieved by restricting the net sizes being used by the fishermen. Only large sized gill nets should be allowed during monsoon, which are useful to catch introduced fishes. Even after the monsoon season, the present restriction on minimum net size should be strictly followed so as to catch only mature fishes.

Conserving the breeding areas: As discussed earlier, shallow and steam joining areas are the breeding grounds for most of the fish species. In this connection, fishing activities should be totally restricted in shallow areas during June to September. The breeding area should be demarcated and these areas should be kept under continuous monitoring. Especially, the Yenne Hole' tributary entirely, from Sasichouka to Valagere, Nagodi river joining areas upto Hasaramakki ares, Nagara to Hosanagar area especilly the river junctions of Hilkunji and Sharavathi rivers, Haridravathi and Sharmanavathi river joining area which are found to be excellent breeding habitats for the fishes during monsoon season. In total, over the entire reservoir area, there are several sensitive breeding areas wherein fullest protection to the fishes should be given. The fishes that breed within the reservoir can be protected by selective fishing, which is determined by the net size selection.

Permanently stopping migrating fishermen: The Department should reconsider revenue-oriented approach, while issuing licenses to the fishermen. Licenses should be issued to permanent fishermen residing near the reservoir, who are solely dependent on the reservoir for their livelihood. The present status of fisheries in the reservoir and moderate reservoir productivity indicates the depletion of fish resource. In order to reduce the fishing pressure, it is advisable to avoid migratory fishermen from fishing. Since their fishing perod is monsoon, large quantities of breeding fishes are destroyed by over fishing.

Strengthening the indigenous fish population: Culture techniques for endangered species should be developed to protect and rehabilitate the endan­gered species taking into account the critical need to conserve genetic diversity. Presently the reservoir is not in a position to stand alone with the indigenous species. Even though there is great demand for the indigenous fishes like Wallago attu, Ompok bimaculatus and Channa marulius, other than Ompok bimaculatus, all other commercially valuable fishes are in trace quantities. The predation nature of these fishes creates controversy over strengthening them. Other than these fishes, Tor khudree,Tor mussullah, species of Cirhina, species of Labeo, Mastaeembelus armetus, species of Mystus ect., even though have tremendous potential to grow need to be strengthened either by external input or improving their breeding grounds.

Proper introduction: At present the reservoir is in such a state that native fishes alone cannot with­stand the fishing pressure due to collapse in native fish stock. Probably, an external system in the form of introduction and extraction is the optimum solution available in the present context. In the last two to three years, the quantity of seeds introduced has declined. However, there is a great ecological concern over the introduction of new species. Integrity of aquatic communities and ecosystems should be conserved by appropriate management techniques. In particular, efforts should be made to minimise the harmful effects of introducing new species into waters. In this regard, the carrying capacity of aquatic environments should be well studied and the quantification of introduction should be made in order to eliminate the adverse effect on native fish fauna.

Removal of Oreochromis mossambica (Tilapia): In the present condition, removal of new species Oreochromis mossambica is advantageous to reservoir fishery. This fish is regarded as a highly dominating species in the reservoir, which has the ability to overtake most of the species in competition for food and habitat. The presence of Tilapia decreases the population of other fish species. Thus, it is beneficial to minimise its population through selective fishing.

Strict supervision : The department lacks trained staff for strict supervision of the fishing activity. They should be strengthened through increasing their number and proper training. This can enlighten the scientific approach in them towards fisheries management.

Activating the Cooperative Society: Another major necessity is to activate the Cooperative Society, which is presently passive. All fishing activities should be carried out through the society. Frequent meetings among the fishermen, merchants and the departmental staff can strengthen the society. Here, banning the temporary fishermen can simplify the task of activating the cooperative society.

Propera management of data: There is no scientific information available about fisheries in Linganamakki Reservoir. This severely affects the decision-making. Without any statistical data, it is impossible to maintain the fishing activity in a healthy state. Thus it is of prime importance to maintain at least the data pertaining to total yield statistics, species-wise yield, physicochemical analysis of reservoir water representing the entire water body and disease episodes which is very useful during any planning stage.

Educating the local fishermen: Fishermen should be properly educated on the importance of fish diversity and the associated interconnections between different species. This can considerably decrease improper fishing practices by understanding their negative impacts on fish resources.