Life history of Tanymastigites perrieri (Anostraca) in relation to temperature
Beladjal, L.; Khattabi, E.M.; Mertens, J. (2003). Life history of Tanymastigites perrieri (Anostraca) in relation to temperature. Crustaceana 76(2): 135-147. dx.doi.org/10.1163/156854003321824495
In: Crustaceana. Brill Academic Publishers: Leiden; Köln; New York; Boston. ISSN 0011-216X; e-ISSN 1568-5403, meer
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| Auteurs | | Top |
- Beladjal, L., meer
- Khattabi, E.M.
- Mertens, J., meer
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| Abstract |
Growth, longevity, and reproduction of Tanymastigites perrieri (Daday, 1910) have been studied under standardized laboratory conditions at six different temperature regimes: 10, 20, 25, 30, 35, and 40°C. The development D of the shrimps as a function of the temperature T is expressed as K = D(T - Q. The temperature at which development stopped is C = 4.32°C, while K is a thermal constant, the number of degrees-days above threshold, or the physiological time (K = 719 degrees-days). The highest growth rate occurred at 25°C. The greatest body size, however, was attained in animals reared at 10d°C (22 mm). Longevity decreased with increasing temperatures (from 41 days to 4 days). Maturation time was inversely related to temperature (from 20 days to 4 days; at 40°C no larvae survived). Offspring per individual varies with temperature (maximum 447 eggs at 20°C); while the innate capacity for increase, r, fluctuates between 0.07 and 0.34. |
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