EVALUATION OF THE PRODUCTION POTENTIAL OFMacrobrachium rosenbergiiIN MONOCULTURE AND IN POLYCULTURE WITHTilapia aurea
作者:
D. B. Rouse,
R. R. Stickney,
期刊:
Journal of the World Mariculture Society
(WILEY Available online 1982)
卷期:
Volume 13,
issue 1‐4
页码: 73-85
ISSN:0735-0147
年代: 1982
DOI:10.1111/j.1749-7345.1982.tb00014.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
ABSTRACTThe feasibility of polyculturingMacrobrachium rosenbergiiandTilapia aureawas examined in 500 m2earthen ponds in central Texas. Monoculture of each species was also undertaken to provide comparative data. Water quality was monitored to determine its influences on survival, growth and production of the culture species.Production of freshwater shrimp in ponds in central Texas was similar to that obtained in other temperate regions of the United States where similar stocking densities, feeding and initial sizes have been employed. At a density of 9 shrimp per m2, average production was 1120 kg/ha. Polyculture increased total production above that obtained from shrimp alone. At stocking rates of 9 shrimp and one fish per m2, total production reached 2240 kg/ha. Combining fish with shrimp resulted in a recognizable but non‐significant reduction in shrimp growth and survival. Competition for food appeared to be the primary interaction between the two species. Increased stocking density increased production and reduced average size.Partial budget analysis indicated that shrimp‐tilapia polyculture had a higher net return than shrimp monocult
点击下载:
PDF
(662KB)
返 回