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- Publisher
- Brill
- Copyright
- Copyright 1990 by Koninklijke Brill NV, Leiden, The Netherlands
- ISSN
- 0278-0372
- eISSN
- 1937-240X
- DOI
- 10.1163/193724090X00069
- Publisher site
- See Article on Publisher Site
Abstract
1990 In recent years, several publications have demonstrated a cost of reproduction in males (Bell and Koufopanou, 1986; Par- tridge, 1987; and references therein). Dews- bury (1982) stresses that "males are limited with respect to the number of ejaculates they can deliver and the time required to restore depleted reserves." Thus, selection pres- sures associated with costly ejaculates and sperm competition should lead males "not to inseminate as many females as possible but to ensure that the number of ejaculates with each female ensures effective paterni- ty" (Dewsbury, 1982). In parasitic copepods on fishes two main categories of life cycles are found. In most families and in the majority of species, only a single host is included in the life cycle, whereas in the family Pennellidae, the fe- males change host species (Ho, 1966; Ka- bata, 1979). Because of their change of host, pennellid females probably have a higher postmating mortality and are available for insemination during a shorter time (An- stensrud, in press) than females with only one host in the life cycle. Thus, in parasitic copepods male reproductive biology may represent adaptations not only to sperm competition, female choice, and operation- al sex ratio as generalized
Journal
Journal of Crustacean Biology – Brill
Published: Jan 1, 1990