Dear Dr. Jaya,
Good morning, this might be Pilargidae family and now coming to Genus- Ancistrasyllis.
Regards,
Naidu,SA
Is a Pilargidae, but it could belong to the genus Sigambra. I not think it's a juvenile, but we need more information, size?, and other picture in dorsal view.
I would also agree it is Pilargidae genus Sigambra, in ventral view. I don't think it is juvenile either, but it seems very short, so it might be regenerating its posterior part that was damaged?
I agree with Angel de Leon and others that it looks like a ventral view of a Sigambra with an odd posterior end, might well be as Barbara puts it, that it is regenerating
https://www.researchgate.net/post/What_is_the_best_method_for_estimation_of_molluscan_bimass_for_macrobenthic_studies_with_out_or_with_shell_weight
Hi again,
Just a short comment, maybe irrelevant, on the posterior end of this Sigambra. It has that look because the loss of the posterior region of the body was pre mortem, probably during collecting or handling. What we can see is the reaction of the worm to themutilation, to avoid losing coelomic fluids and the entrance of foreign materials. The contraction of the muscles around the point of mutilation act like a sphincter, closing the body at the point of rupture, which projects backwards the last pair of parapodia. I hope this helps making the interpretation of the photo clear.
Cheers,
Joao
Ok then how we find out a species from broken regenerated organism? If major parts of identification broken/absent?
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