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Feeding Habits of the Pond-Smelt Hypomesus Olidus and the Plankton Succession in Lake Suwa






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    Observation on feeding habits of fish in ponds receiving green and animal manures in Wuxi, China
    Establishment of a Network of Aquaculture Centres in Asia
    1984
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    Fish yields and ratios of naturally occurring stable carbon isotopes, 13C: 12C (reported as ä C) from 1 mu (670 m2) and 5 mu (3330 m2) ponds were measured. The ponds received daily inputs of green and animal manures as the sole organic inputs. Fish yields exceeding 40 kg/ha per day were attained in both the small and large ponds. ä C data indicated a strong contribution of the fresh fluid pig manure to growth of the two filter-feeding species, silver and bighead carp. Two grass-eating species, g rass carp and Wuchang fish (Megalobrama amblyscephola), had significantly different ä C values, indicating partially separate food sources for each of these two species.
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