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Title: Different Preference Reactions of Three Lake Baikal Endemic Amphipods to Temperature and Oxygen are Correlated with Symbiotic Life
Author(s): Maxim Timofeyev, Zhanna Shatilina
Annotation: Thermopreference reactions and avoidance sensitivity to dissolved oxygen levels were measured in three endemic amphipod species from Lake Baikal: Eulimnogammarus verrucosus and E. vittatus, as well as Brandtia parasitica, which is a symbiont of the Baikalean sponge, Lubomirskia baikalensis. The benthic E. vittatus and E. verrucosus demonstrated highly developed thermopreference reactions, whereas B. parasitica did not show thermopreference behaviour. The experimental results also showed that E. vittatus and E. verrucosus avoid water with decreased dissolved oxygen levels, whereas behavioural reactions of B. parasitica did not depend on oxygen concentration. In the presence of sponge fragments, individual B. parasitica moved actively towards them, and concentrated on those fragments. Possible reasons for reduction of behavioural preference in B. parasitica are discussed with a focus on the species’ symbiotic status.
Bibliographical description: Maxim Timofeyev, Zhanna Shatilina. Different Preference Reactions of Three Lake Baikal Endemic Amphipods to Temperature and Oxygen are Correlated with Symbiotic Life. Koninklijke Brill NV, Leiden, 2007 Crustaceana 80 (2): 129-138
Publication's type: статья
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