|(this image from the book Great British Marine Animals! )|
with more pix of this species spawning here for good measure...
But the behavior is seen in MANY other temperate-cold water North Pacific species including Pisaster ochraceus, and even the large Pycnopodia helianthoides (kind of)!
But we actually don't know! What one might infer or assume might not (and sometimes just isn't) the case.
People are always surprised when I tell them that.
Often times, you have some behavior or other biology going on-but we just haven't scratched the surface of understanding some of these familiar but surprisingly poorly known species...
- Does the spawning posture maximize reproductive behavior?
- Why do some species spawn "flat' versus "standing"??
- Does the posture relate to the amount of gametes produced?
- Could this behavior be related to seasonal conditions? Nutrients? Current flow?
- Does behavior vary in cold versus tropical water species??
- Do different species vary in their reproductive posture?? How many species?
GO DO THIS!!! (please note that riches and fame are exaggerations and are not necessarily applicable or guaranteed)
So Sayeth the Echinoblog !!
Here are further species documented with this posture...Do you have a picture of a starfish/seastar doing this? Please let me know in the comments!