LITERATURE CITED
- Byron , E. R. 1981 . Metabolic stimulation by light in a pigmented fresh-water invertebrate . Proc. Nat. Acad. Sci. , 78 : 1765 – 1767 .
- 1982 . The adaptive significance of calanoid copepod pigmentation: A comparative and experimental analysis . Ecology , 63 : 1871 – 1886 .
- Fox , H. M. and Phear , E. A. 1953 . Factors influencing haemoglobin synthesis by Daphnia. . Proc. R. Soc. Lond. Ser. B , 141 : 179 – 189 .
- Hairston , N. G. Jr . 1979 . The adaptive significance of color polymorphism in two species of Diaptomus (C opepoda) . Limnol. Oceanogr. , 24 : 38 – 44 .
- Hann , B. J. 1995 . Genetic variation in Simocephalus (Anomopoda: Daphniidae) in North America: Patterns and consequences . Hydrobiologia , 307 : 9 – 14 .
- Hann , B. J. and Hebert , P. D. N. 1986 . Genetic variation and population differentiation in species of Simocephalus (Cladocera, Daphniidae) . Can. J. Zool. , 64 : 2246 – 2256 .
- Hebert , P. D. N. and Emery , C. J. 1990 . The adaptive significance of cuticular pigmentation in Daphnia. . Functional Ecol. , 4 : 703 – 710 .
- Landon , M. S. and Stasiak , R. H. 1983 . Daphnia hemoglobin concentration as a function of depth and oxygen availability in Arco lake, Minnesota . Limnol. Oceanogr. , 28 : 731 – 737 .
- Luecke , C. and O'Brien , W. J. 1983 . Photoprotective pigments in a pond morph of Daphnia middendorffiana. . Arctic , 36 : 365 – 368 .
- Morin , P. J. 1984 . The impact of fish exclusion on the abundance and species composition of larval odonates: Results of short-term experiments in a North Carolina farm pond . Ecology , 65 : 53 – 60 .
- Pont , D. , Crivelli , A. J. and Guillot , F. 1991 . The impact of three-spined sticklebacks on the zooplankton of a previously fish-free pool . Freshwater Biol. , 26 : 149 – 164 .