文章基本信息

标题：Population Density of Emerita asiatica (H. Milne Edwards, 1837) in Relation to Carbonates and Bicarbonates in the Kovalam Beach, East Coast, Kanchipuram District of Tamil Nadu, India
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作者：Baskaran Seethalakshmi ; Sreenivasan Manjula ; Jayaprakash Sivakumar 等
期刊名称：Journal of Modern Biotechnology
印刷版ISSN：2319-6645
出版年度：2014
卷号：3
期号：4
页码：42-47
出版社：Madras Institute of Biotechnology
摘要：Population density of Emerita asiatica in relation to carbonates and bicarbonates in the Kovalam beach, East coast,Kanchipuram District of Tamil Nadu was studied. Specimens were collected once in a fort night from April 2013 to March2014 by hand picking method in the intertidal region of Kovalam beach. The total carbonates and total bicarbonates of seawater were recorded once in a fortnight. The population presented a smaller incidence of males in relation to females(48.66:51.34); however in May 2013 an inverse pattern occurred (73:27). Ovigerous females were present in all sampleswith greater frequencies in October and November 2013 where as the highest juveniles were present in May and September2013. The variation noted in population of E. asiatica showed there is a relationship to carbonates and bicarbonatesfluctuations; it can be concluded that carbonates and bicarbonates fluctuations have influence on the population density ofthis species in Kovalam beach. Hence, the rather stable carbonates and bicarbonates throughout the year and moderatechanges in sea water may well be conducive to population density of E. asiatica.
关键词：Emerita asiatica; carbonates; bicarbonates; population density; sex-ratio.