[Coral-List] Pocillopora eydouxi spawning report
Tim Wijgerde
t.wijgerde at coralscience.org
Thu Oct 8 12:37:16 EDT 2009
Dear listers,
may I draw your attention to a short report
by Dana Riddle and Sara Peck
about the spawning behaviour of
Pocillopora eydouxi in Hawai'i.
>From the report:
The
spawning habits of P. eydouxi in Hawaii are very similar to those of
Pocillopora meandrina.
These similarities exist:
* hermaphroditic
* broadcast spawner, ejecting discrete and
separate gametes (not in
bundles)
* capable of
‘selfing’
* overlapping of spawning episodes with P.
meandrina
* spawning occurs at or a few days after the full moon
during spring
(June is the only confirmed month)
* spawning
occurs an hour or so after sunrise
* small oocytes (~80
microns)
* eggs contain zooxanthellae transmitted from parent
colony (vertical
transmission)
* eggs negatively buoyant
* spawning events are timed for gamete release just a couple of
hours
before low tide (possibly to ensure mixing and lessened
gamete
dilution)
* a single colony can spawn one at least
two consecutive mornings
Read the full report here:
http://www.coralscience.org/home/content/view/274/1/lang,english/
Sincerely,
tim
Tim Wijgerde, M.Sc.
Molecular marine biologist
CEO Coral
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