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SEASONAL SUCCESSION AND CONGENERIC ASSOCIATIONS OF DIAPTOMUS SPP. (COPEPODA) IN SOME SASKATCHEWAN PONDS 1
Author(s) -
Hammer U. Theodore,
Sawchyn William W.
Publication year - 1968
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1968.13.3.0476
Subject(s) - biology , ecological succession , ecology , zoology
Seven species of Diaptomus were collected from nine prairie ponds in southern and central Saskatchewan. D. sanguineus, D. stagnalis, D. arcticus, and D. kiseri were found only in spring and early summer samples. D. sanguineus was found in association with each of the last three species. D. stagnalis, D. arcticus, and D. kiseri were never found together. D. leptopus, D. forbesi, and D. nudus appeared in late spring and persisted throughout the remainder of the ice‐free period. Disappearance of D. sanguineus and D. arcticus was associated with the appearance of D. leptopus or D. forbesi. The latter two species did not appear capable of extended coexistence. The size, the seasonal occurrence and life cycle, and the subgenus of each species are important factors that determine the type of congeneric association where Diaptomus species may coexist.