Population dynamics ofEuterpina acutifrons(Copepoda: Harpacticoida) from North Inlet, South Carolina, with reference to Dimorphic Males
✍ Scribed by L. M. D'Apolito; S. E. Stancyk
- Book ID
- 104755174
- Publisher
- Springer-Verlag
- Year
- 1979
- Tongue
- English
- Weight
- 884 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0025-3162
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✦ Synopsis
The population dynamics of Euterpina acutifrons (Dana), a pelagic, harpacticoid copepod, are summarized in a life table based on field data. Highest mortality occurred in the last naupliar stage (NVI) and the first copepodite stage (CI). Overall survival in the field was 0.06% from the first naupliar stage (NI) to adult (CVI). The net reproductive rate (R o = 55.590) and intrinsic rate of increase (r m = 0.28) were sufficiently high to maintain a population with such a low survival rate in nature. E. acutifrons was present and breeding in the field from April through December. Low temperatures limited breeding, which began when the temperature reached 16.5~ and ceased when it fell to 11~
Optimum temperature for North Inlet E. acutifrons was 25~ with a maximum laboratory survival of 15.3% and a generation time of 10.3 days. Generation time in the field (20~ was 14 days. Temperature also affected the abundance of dimorphic males. Small males were always most abundant, but peaked during the coldest month; large males became equal in abundance only during the warmest months.