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breeding succes

Leo van der Ven leoven at knoware.nl
Thu Jun 10 16:26:23 EST 1999


Hi, I am new in zfish world. In our lab we test endocrine disruptors in
zfish.
I was amazed about the low breeding success.
One breeding unit (1f+2m) produces 200-700 eggs.
fertilized         90%
hatching         60%
survival >4w    60%
full-grown        90%

final success: <30%

Also, juveniles develop unequal, from early on there is a wide variability
in sizes.
Is this normal in zfish breeding or should we adjust our methods?

thanks, Leo






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