Originally posted by Skipjack Joe
Wow, looks like I've hit a nerve.
Your second post seems to deny what you said in your first post:
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So to me, from my own observations and experiences, the rays in general, and here in the Sea of Cortez especially, the Mobula, jump for the two above
mentioned reasons. Fun, and dislodging those parasites that the wrasse cannot, do not, or have not reached. And it must be remembered that there are,
at least to the best of my knowledge, not such animals here in the Sea of Cortez as "Cleaner Wrasse." I do not know if there are any other species of
fish, or indeed invertebrate that would/could perform such cleaning duties in this part of the world..
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As I read this, it states that you think that mobulas jump because the Cortez lacks cleaning wrasses. That's quite a jump in my opinion. From having
witnessed wrasses cleaning rays to suggesting that they jump due to their absence is a real stretch. You were asked a question and this is your
explanation. Frankly, I don't buy it.
I like the idea that they do so to remove parasites but to go further and state that they do so because parasite removing fish are absent is very
unlikely.
Regarding them doing it for 'fun'.
Of course they do it for fun. In the animal world everything is done either for fun or from fear. Everything that is beneficial is done for fun.
That's how evolution works. First comes a behavior that provides benefit and then we become wired to like it. So saying that something is done for fun
is not very illuminating. On the other hand saying they do it for no other reason than 'fun', I wouldn't agree with that. Hunting in the savannah is
fun but running around with no purpose is not 'fun'.
I am sorry that my criticism has hurt your feelings but those are my thoughts.
There are many improbable statements that have turned out to be true. Perhaps yours is one of them. There is a discussion about continental drift on
another thread. Certainly the people who first concluded that since the east coast of south america fits so nicely into the west coast of africa those
2 continents must have been together at one time. The jeers that came from that suggestion must have been ear splitting. Yet the work from Scripps
expeditions proved them to be right. Perhaps your theory will be successful as well. But to me, it seems very far fetched.
As for your snide remarks about head scratching - save the anger. |