Daphnia: A better icon for fecundity
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Poster:
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Wayne Wurtsbaugh
(see this users gallery)
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Views:
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10221
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Date:
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Sep 21, 2006
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Filesize:
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68.5k, 863.9k
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Dimensions:
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1875 x 2500
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Description:
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: Daphnia, a mm-long crustacean organism living in lakes and ponds, is prolific. A single female can produce dozens of eggs each day when feeding and temperature conditions are good. The female, however, usually does this without the aid of a male, as most species are parthenogenic--that is females simply reproduce identical copies (clones) of themselves without sexual reproduction. When times are tough, however, the females produce males, mating ensues, and a resting egg (ephippium) is produced.
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Keywords:
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reproduction sexuality zooplankton car human
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