teflon Posted July 15, 2005 Share Posted July 15, 2005 I have googled them but have found no info on hatching them can someone please explain Link to comment Share on other sites More sharing options...
Rod54 Posted July 15, 2005 Share Posted July 15, 2005 You can't hatch them....unless your a female daphnia following is from an article on daphnia The life span of Daphnia, from the release of the egg into the brood chamber until the death of the adult, is highly variable depending on the species and environmental conditions (Pennak, 1978). Generally the life span increases as temperature decreases, due to lowered metabolic activity. The average life span of D. magna is about 40 days at 25oC and about 56 days at 20oC. The average life span of Daphnia pulex at 20oC is approximately 50 days. Four distinct periods may be recognized in the life history of Daphnia: (1) egg, (2) juvenile, (3) adolescent and (4) adult (Pennak, 1978). Typically, a clutch of 6 or 10 eggs is released into the brood chamber. The eggs hatch in the brood chamber and the juveniles, which are already similar in form to the adults, are released in approximately two days when the female molts (casts off her exoskeleton). The time required to reach maturity varies from 6 to 10 days. Daphnia typically invest most of their energy in reproduction (D. magna 69%, D. pulex 67%), while they invest comparitively little in growth (23%). This serves to highlight the heavy emphasis on fast reproduction to take advantage of good conditions. Do you mean Brine Shrimp ??? Link to comment Share on other sites More sharing options...
teflon Posted July 15, 2005 Author Share Posted July 15, 2005 Okay i have a tub of daphnia here but i dont know how to make them free swimming do i just dump them in water? Link to comment Share on other sites More sharing options...
DanceswithDingoes Posted July 15, 2005 Share Posted July 15, 2005 Are you sure the daphnia is not freeze dried? If so it wont 'hatch' Just soak a little in some tank water and feed to the fishies. Link to comment Share on other sites More sharing options...
teflon Posted July 15, 2005 Author Share Posted July 15, 2005 cheers Link to comment Share on other sites More sharing options...
CThompson Posted July 20, 2005 Share Posted July 20, 2005 That was it! Good pick DWD. Link to comment Share on other sites More sharing options...
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