Adhesion mechanisms in European whitefish Coregonus lavaretuseggs: is this a survival mechanism for high-energy spawning grounds?

Murray, D.S., Bain, M.M. and Adams, C.E. (2013) Adhesion mechanisms in European whitefish Coregonus lavaretuseggs: is this a survival mechanism for high-energy spawning grounds? Journal of Fish Biology, 83(5), pp. 1221-1233. (doi:10.1111/jfb.12218)

Murray, D.S., Bain, M.M. and Adams, C.E. (2013) Adhesion mechanisms in European whitefish Coregonus lavaretuseggs: is this a survival mechanism for high-energy spawning grounds? Journal of Fish Biology, 83(5), pp. 1221-1233. (doi:10.1111/jfb.12218)

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Abstract

This study examined the potential biochemical and mechanical structures that may contribute to egg adhesion in European whitefish Coregonus lavaretus. Experiments showed that eggs from a population of C. lavaretus from Loch Eck remained non-adhesive in a solution chemically similar to ovarian fluid but became adhesive seconds after contact with water. Examination of the ultrastructure of the chorion showed that the morphology changed significantly after contact with water, with nodule-like protuberances attached to connective filaments on the surface present in water-hardened but not non-water hardened eggs. Biochemical analysis showed the presence of Chain A, RNase ZF-3e proteins in the chorion of water-hardened but not non-water hardened eggs. Histochemical staining of the chorion of C. lavaretus eggs showed that the externa, but not the interna, stained positively for the presence of glycoproteins. From these results, it was concluded that C. lavaretus from Loch Eck possess both anatomical and biochemical adhesive mechanisms that have been undocumented in this species so far.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Bain, Professor Maureen and Murray, Mr David and Adams, Professor Colin
Authors: Murray, D.S., Bain, M.M., and Adams, C.E.
College/School:College of Medical Veterinary and Life Sciences > Institute of Biodiversity Animal Health and Comparative Medicine
Journal Name:Journal of Fish Biology
ISSN:0022-1112
ISSN (Online):1095-8649

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