Fertilizers for increasing the natural food for fish in ponds. Transactions of the American Fisheries Society 68:126-135Swingle, H.S.,Smith, E.V.Fertilizers for increasing the natural food for fish in ponds. Trans, Am. Fish. Soc . 1939...
Which is greater, a food chain for the hydra daphnia or bacteria? What do animals use to detect predator presence? What creature cannot survive outside of its natural environment? Is there anything special about the geographical range and ecosystem or biome ...
Over 5 years of participatory on-farm research, market access, profitability, farming systems productivity and economic sustainability were compared on 100... PJ Muir - 《Food Policy》 被引量: 31发表: 2011年 Pond management strategies for small-scale aquaculture in northern Vietnam: fish production...
The natural food examined and defined was collected both from guts of fish sampled and from pond water. The proportional amount of phytoplankton found in guts of Catla catla, Labeo rohita, Cirrhinus mrigala, Cyprinus carpio, Hypophthalmichthys molitrix and Ctenopharyngodon idella was 80-90 %, 70-...
1. A large inland body of fresh water or salt water. 2. A scenic pond, as in a park. 3. A large pool of liquid: a lake of spilled coffee on my desk. [Middle English, from Old French lac and from Old English lacu, both from Latin lacus.] lake 2 (lāk) n. 1. A pigment ...
Natural Pond Fish Swim Fish Natural Swim Pond Nature Background Water Landscape Food Beautiful Summer River Underwater House Animal Garden Gold Agriculture Pool Aquarium More similar stock footage HD Koi Carp fish swim HD Many beautiful fish swim in aquarium between ...
For the analysis of the fish stomach content and plankton in the pond water, the fish and pond water were sampled weekly for 75days and biweekly until the fish reached a mean weight of 750g. Although artificial feed was used, pirarucu also ingested the natural food available in the pond ...
Dependent on natural resources for food, materials, and fuel, all societies face the prospect of shortages or “running out” from time to time. Regional, national, and planetary resource inventories have been the stock in trade of applied resource geography since the birth of the discipline. De...
Thus, the trees in a forest, arable land in a grassland, or a pond enclosed by private lands can be owned outright. Any fish in that pond also are the property of the landowner. However, if the same species of fish is in a body of water that flows through a region or in a lake...
The total lipids (6.0±0.9%) consist of 90.7% of neutral lipids and 8.7% phospholipids. Of 41 fatty acids identified by GC-... EL Maia,DB Rodriguez-Amaya - 《Developments in Food Science》 被引量: 73发表: 1992年 Fermentation characteristics of the caecal contents of broiler chickens fed ...