Polar Biology

, Volume 7, Issue 1, pp 11–24

On the reproductive biology of Ceratoserolis trilobitoides (crustacea: isopoda): Latitudinal variation of fecundity and embryonic development

  • Johann-Wolfgang Wägele

DOI: 10.1007/BF00286819

Cite this article as:
Wägele, JW. Polar Biol (1987) 7: 11. doi:10.1007/BF00286819


The embryonic development of Ceratoserolis trilobitoides (Crustacea: Isopoda) is described. It is estimated that breeding lasts nearly 2 years. In comparison with non-polar isopods 3 causes for the retardation of embryonic development are discussed: genetically fixed adaptations to the polar environment, the physiological effect of temperature and the effect of egg size. The latter seems to be of minor importance. Intraspecific variations of fecundity are found in populations from the Weddell Sea, the largest eggs occur in the coldest region. The distribution of physiological races corresponds to the distribution of morphotypes.

Copyright information

© Springer-Verlag 1987

Authors and Affiliations

  • Johann-Wolfgang Wägele
    • 1
  1. 1.Arbeitsgruppe Zoomorphologie, Fachbereich 7Universität OldenburgOldenburgGermany