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Effect of temperature and salinity on corporal activities of some echiuran worms

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Title Effect of temperature and salinity on corporal activities of some echiuran worms
 
Creator Singhal, R N
 
Description 186-188
Change in temperature did not produce alterations in the weight and/or volume of Achaetobonellia maculata, Acanthobonellia vulgaris and Anelassorhynchus branchiorhynchus, but it did influence the speed of the burrowing cycle and other corporal movements of these animals. Temperature higher than 38ᵒC were lethal. Weight variation was greater in a hyposmotic environment than in a hyperosmotic one; range variation being independent of the size of the animal. A. maculata and Ac. vulgaris showed the capacity to regulate corporal volume in a salinity approximately 28.5 x 10-3 that of seawater and survived in a salinity 12 x 10-3 that of seawater, while An. branchiorhynchus regulated its corporal volume in a salinity approximately 16.25 x 10-3 that of estuarine water and survived in a salinity 12.5 x 10-3 that of estuarine water. Typical poikilosmotic behaviour depended on the stress intensity to which the echiurans were submitted.
 
Date 2016-12-19T10:26:47Z
2016-12-19T10:26:47Z
1983-09
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://nopr.niscair.res.in/handle/123456789/38888
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.12(3) [September 1983]