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Population selection-strategies in the wedge clam, Donax-incarnatus (Gmelin) from Panambur beach, Mangalore

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Title Population selection-strategies in the wedge clam, Donax-incarnatus (Gmelin) from Panambur beach, Mangalore
 
Creator Thippeswamy, S
Joseph, M Mohan
 
Description 147-151
Correlates of r- and K-selection strategies were examined in an intertidal population of D. incarnatus. Settlement extended from November to May. Zero year class dominated the population. Instantaneous total mortality ranged from 0.1824 (January 1985) to 0.3963 (March 1984). Growth rate showed variability, being faster (3.22 mm per month) during the first 6 months than during the rest of the year (1.77 to 0.3 mm per month). L(max) was 26.1 mm. The von Bertalanffy equation for length was L(t) = 30.94[1-e-0.1612(t + 0.04)]. A life table of a cohort of 1000 individuals was prepared. The life span was < 15 months. Survivorship curve belonged to type Ia of Deevey [Quart Rev Biol, 22(1947)283]. Selection attributes indicated that this species is a K-strategist in this study area.
 
Date 2016-12-07T10:53:07Z
2016-12-07T10:53:07Z
1991-06
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/handle/123456789/38267
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.20(2) [June 1991]