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Zur Autökologie von Opistomum pallidum O. Schmidt, 1848, einer Turbellarienart astatischer Kleingewässer . Autecology of Opistomum pallidum O. SCHMIDT, 1848, a Turbellarian Species of Astatic Freshwater Biota
Author(s) -
Heitkamp Ulrich
Publication year - 1978
Publication title -
internationale revue der gesamten hydrobiologie und hydrographie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.524
H-Index - 52
eISSN - 1522-2632
pISSN - 0020-9309
DOI - 10.1002/iroh.19780630210
Subject(s) - facultative , turbellaria , biology , ecology
In the freshwater turbellarian, Opistomum pallidum , facultative self‐fertilization occurs. The duration of development follows the van't Hoff/Arrhenius temperature rule. An acceleration of development is caused by a crowding effect at low temperatures. In the natural habitat, one generation requires 6‐7 months, lasting from November to May, or 2‐3 months from March to May.