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Continuous Breeding in Populations of Two Tropical Crustaceans, Mysidium Columbiae (Zimmer) and Emerita Portoricensis Schmidt
- Goodbody, Ivan
- Ecology 1965 v.46 no.1-2 pp. 195-197
- Emerita, Mysidacea, breeding, eggs, females, young animals, Jamaica
- Mysidium columbiae is a mysid found commonly in mangrove lagoons in Jamaica. Samples collected at approximately fortnightly intervals over a period of 15 months show that eggs and embryos are carried at all seasons of the year and suggest that the population as a whole is reproducing continuously. Emerita portoricensis is a mole crab occurring in dense populations in alluvial sands. Samples taken over a period of two years indicate that young animals enter the population through out the years and that females in berry are found at all seasons. It is concluded that breeding is also continuous in populations of this species.