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Morphology and fluorescence of the parapodial light glands in Tomopteris helgolandica and allies (Phyllodocida: Tomopteridae)

Journal article
Authors A. Gouveneaux
P. R. Flood
E. S. Erichsen
Catharina Olsson
Jenny Lindström
J. Mallefet
Published in Zoologischer Anzeiger
Volume 268
Pages 112-125
ISSN 0044-5231
Publication year 2017
Published at Department of Biological and Environmental Sciences
Pages 112-125
Language en
Links doi.org/10.1016/j.jcz.2016.08.002
Keywords Bioluminescence, Pelagic annelid, Rosette gland, Hyaline gland, Chromophile gland, Tubular gland, catharina gosse, nervous-system, bioluminescence, photocytes, organs, worm, Zoology
Subject categories Biological Sciences, Earth and Related Environmental Sciences

Abstract

The histology of putative light organs in the parapodia of five species of Tomopteris (pelagic annelids) is examined and compared using light, epifluorescence and scanning electron microscopy. The structural homology of rosette glands in the parapodial pinnae of the tail-bearing species T. helgolandica and T. pacifica, and hyaline glands of the tail-less species T. carpenteri, T. planktonis and T. septentrionalis is highlighted. However, the rosette glands point towards the ramus of the coelomic cavity inside the parapodia, whereas the hyaline glands point towards the surrounding water and penetrate the pinnal surface on the posterior side of the parapodia. Further, in order to assess the photogenic properties of rosette glands from T. helgolandica, we analysed the distribution and the temporal dynamics of their endogenous fluorescence in isolated parapodia in response to light emission induced by I

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