Pisione remota does have planktonic larvae, according to Akesson (1961),
who collected them from the plankton for morphological studies. Not only
that, but the planktonic larvae fed on single-celled algae in laboratory
cultures. Akesson was able to rear "young" larvae to metamorphosis in the
lab. It's not clear to me when embryos/larvae are released into the
plankton, though. Do parents brood embryos for a while (internally?
externally? in a capsule or jelly mass?) before releasing them as
swimming, feeding larvae?
Akesson, B. 1961. On the histological differentiation of the larvae of
Pisione remota. Acta Zoologica 42:1-49
Bruno Pernet
pernet at fhl.washington.edu
On Mon, 19 Jul 1999, Geoff Read wrote:
> Reportedly planktonic, at least in Pisione remota, but after an internal
> copulation. Stecher (1968) is often quoted.
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