All the photos whose present in this page are taken in a small area of "Trou d'eau lagoon", on a large population in September 2010 by Christophe Cadet and Philibert Bidgrain
Since the begining of September a large population of Thuridilla moebii was observed on the fringing reef of Trou d'eau lagoon. I observed betwwen 20 and 50 specimens during each observation... All these specimens crawl during the day on the substratum, sometimes forming little group (maximum five specimens)
Mating event
24 September 2010. Full moon day, Christophe Cadet I saw a dozen of "couples" into this configuration "head to tail", which you can see below the head, the genital papillae In addition, during each mating or when they are able to reproduce (when the reproductive organ is out), the anterior border of the foot becomes red (b) The genital papillae (a)
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Some specimens are walking alone, genital papillae visible (a)
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26 September 2010 Philibert Bidgrain Only one mating behavior on the 25 specimens observed... The beginning of the "Parade nuptiale" ?
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Spawning event 28 September 2010 Christophe Cadet I have photograph three spawn with the animal... The spawn is formed by a thin orange filament arranged in spiral, glued onto the substrate. |
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