Growth and reproduction of Asellus hilgendorfii (Crustacea, Isopoda) under laboratory conditions.
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概要
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The growth and reproduction of <I>Asellus</I> <I>hilgendorfii</I> was studied at 5°C, 15°C and 25°C in the laboratory. The females began to produce their first brood at about 4 mm in length after five weeks at 25°C and after about ten weeks at 15°C. The animals reared at 5°C died before maturation. The mean number of broods per female was 2.6 and 4.3 times at 15°C and 25°C, respectively. The mean incubation period was 18.3 and 9.4 days, and the mean parturition interval was 29.9 and 15.4 days at respective temperatures. The mean brood size was 27.4 and 34.7 an 15°C and 25°C, respectively. A. <I>hilgendorfii</I> grew faster and bred more often in their lifetime, compared with other species of the genus <I>Asellus</I>.
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