Unknown
Springer
In:
In: Aquatic Oligochaeta: Proceedings of the Second International Symposium on Aquatic Obligochaete Biology, held in Pallanza, Italy, September 21–24, 1982. , ed. by Bonomi , G. and Erseus, C. Developments in Hydrobiology, 24 . Springer, Berlin, Germany, p. 96, 96 pp. ISBN 978-94-009-6565-2
Publication Date:
2017-01-30
Description:
Although European boreal shores are inhabited by only a relatively small number of oligochaete species, the life histories and reproductive strategies of these species vary considerably.
Growth in naidid populations mainly depends on asexual reproduction (paratomy, fragmentation) within a short period of individual life spans, whereas sexual outbreeding plays only a minor role. Naidid populations are characterized by considerable fluctuations of abundance.
Aquatic and mesopsammic tubificids represent a ‘conservative’ type of sexual reproduction within well defined breeding periods. Population structure is fairly stable.
Enchytraeids show a variety of improvements of the sexual outbreeding scheme which lead to an amazing plasticity. Other forms of reproduction such as parthenogenesis and fragmentation seem to be of greater importance in enchytraeids.
The flexible adaptability of development and reproductive capacity in naidids and enchytraeids is mainly controlled by habitat conditions and population size.
A complete review of the biology and ecology of marine Oligochaeta is published in: Giere, O. & O. Pfannkuche, 1982. Oceanogr. mar. Biol. ann. Rev. 20: 173–308.
Type:
Book chapter
,
NonPeerReviewed
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