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Seasonal Occurrence of Mysids [Crustacea] and Evidence of Social Behaviour
Published online by Cambridge University Press: 11 May 2009
Extract
The seasonal maxima of occurrence of 23 species of mysids are examined; the numbers caught of a further four species were too small to draw any conclusions from. The evidence suggests that all species, except possibly two, aggregate; not enough information is available on Acanthomysis longicornis and Heteromysis fortnosa. The types of aggregations formed, whether population swarms or breeding aggregations, are unknown in 10 species. There is evidence of shoal and/or swarmformation in 12 species and of breeding aggregations in 7 species. All species known to form swarms live in shallow water; Leptomysis gracilis is the only species living in deep water that shows evidence of swarm formation. All other deep-water species aggregate, some for the purposes of breeding. Negative phototropism of individuals is suggested as a mechanism initiating aggregation of species in the bottom of deep-water basins. Reaction of one individual to another individual or groupof individuals (social behaviour) is considered necessary to intensify the initial degrees of aggregation and to maintain the integrity of shoals or breeding aggregations once formed. Parallels are drawn between aggregations of mysids and those of euphausiids.
- Type
- Research Article
- Information
- Journal of the Marine Biological Association of the United Kingdom , Volume 51 , Issue 4 , November 1971 , pp. 809 - 825
- Copyright
- Copyright © Marine Biological Association of the United Kingdom 1971
References
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