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DocumentOther documentOn the Plankton of Three Freshwater Fish Ponds in Madras City, India 1954
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No Thumbnail AvailableProjectProgramme / project reportEnvironmental diel cycle during mass fish kills and planktonic collapse in an undrainable rural fish pond
Establishment of a Network of Aquaculture Centres in Asia
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No results found.With a view to find out the possible causes for the sudden occurrence of large scale mortality of fish and fish food organisms in a shallow pond of 1.25 ha on a hot summer day (June 5, 1982), the diurnal variation of physico-chemical factors and plankton density were studied. Water temperature (29.0–37.5°C), free carbon dioxide (0–32.0 ppm) and dissolved oxygen (0.08–11.6 ppm) showed marked fluctuation round the clock. Phytoplankton density was found to be maximum at 5.00 am. and minimum at 9.00 p.m. and during day time was markedly less. Volumetric estimation of plankton revealed a considerable decline in plankton biopmass (71.32%) over a period of 3 days during the hot spell (June 5–8, 1982). The computed loss in density of phytoplankters was 2981 u/1 and that of zooplankters 2354 u/1 during the period. The dead fishes included Cyprinus carpio, Cirrhinus mrigala, Catla catla and Labeo rohita. The lethal conditions for aquatic life occurred with high temperature and complete deple tion of dissolved oxygen in the day time and the sharp rise in free carbon dioxide in the night. The adverse environmental conditions were further aggravated due to very low water level, high concentration of suspensoids of particulate and colloidal matter at the pond bottom and high rate of decomposition of organic matter etc., which seem to have been cumulatively responsible for the sudden mortality of fishes and the collapse of planktonic organisms. -
Brochure, flyer, fact-sheetBrochureManagement of grow-out pond for freshwater fish polyculture 2020
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This brochure provides technical information on the management of grow-out pond for freshwater fish polyculture for small-scale inland fish farmers in Buthidaung and Maungdaw Townships, Rakhine State, Myanmar. It identifies the benefits, processes, and challenges associated with the management of freshwater fish polyculture.
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LetterLetter to Prof. G. Montemartini 1906
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No results found.Lubin discusses his financial limitations, his willingness to assist the IIA, and conditions for his potential move to Rome. -
ReportThe International Institute of Agriculture and the dissemination of statistical information concerning the staples of agriculture 1905
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No results found.Paper for the International Statistical Congress, August 3, 1905, London. 1. draft -
LetterLetter from the Royal Hungarian Minister of Agriculture to Mr. David Lubin 1907
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No results found.This is the translation of the original letter Ref No. 7042/pres VII/I 1907