Optimum harvest for sustainable yield of fish live food tubificid worms
نویسندگان
چکیده
منابع مشابه
Infusoria suitable live food for fish larvae
Infusoria are a group of aquatic organisms that are used to feed fish larvae. They are actually small forms of life in freshwater that include: Amoeba, Oglena, Green algae, Paramecium, Rotifer, Vertisella, and Invertebrates are small. Due to its small size, Infusoria can be used to breed newly hatched larvae of many aquarium fish species such as gourami and beta fish. Many home aquarium owners ...
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Timely harvest is critical to achieve maximum seed viability and vigour in agricultural production. However, little information exists concerning how to reap the best quality seeds of Leymus chinensis, which is the dominant and most promising grass species in the Songnen Grassland of Northern China. The objective of this study was to investigate and evaluate possible quality indices of the seed...
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The presence of nematode or round worms in the flesh of marine fish has long been known and is perceived to be both an aesthetic and human health problem. The most abundant group are members of the genus Anisakis and within fish they are small, colourless worms which are found, often lightly coiled within the flesh or the viscera. Within the flesh they are often difficult to see with the naked ...
متن کاملA Study of Predation Rates of Leeches on Tubificid Worms Under Laboratory Conditions
The objective of this study was to establish the rate at which predatory leeches consume tubificid worms, at worm population densities simulating those of Cleveland Harbor. Two common species of leeches from Lake Erie were studied, Helobdella stagnalis and Erpobdella punctata. A mixed population of tubificids, mostly Limnodrilus hojfmeisteri, Limnodrilus cervix and Peloscolex multisetosus were ...
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The demand for live seafood in Asia has spawned a lucrative trade in live coral reef fish that in 1995 had a global annual retail value of over USD 1 billion (Johannes and Riepen 1995; Cesar et al. 1997). There are concerns that the live reef fish food trade is inflicting an unacceptably heavy impact on coral reefs and reef resources in Southeast Asia and the Indo-Pacific.5 These areas contain ...
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ژورنال
عنوان ژورنال: Dhaka University Journal of Biological Sciences
سال: 1970
ISSN: 2408-8501,1021-2787
DOI: 10.3329/dujbs.v20i1.8838