[Coral-List] Respiration of Parrotfish through their mucus cocoon ?
Michael.Rard at univ-reunion.fr
Fri May 21 05:36:17 EDT 2004
Sorry for all coral-listers and others who will be not concerned by this message.
Some species of parrotfishes build a cocoon in mucus during the night. Different roles have been explained for this cocoon :
1- protection against predators where the mucus represents a barrier against pheromons or other chemical components
2- protection against parasits, even some small molluscs eat the blood of them through the cocoon during the night
But I have a lot of problems to find more informations about this cocoon. My principal questions are :
1) Do you know other roles which were attributed for this cocoon ?
2) If this cocoon is a barrier really against chemical transferts between water and fish, how can breath Scarids fishes ?
Can the oxygen go through the mucus of the cocoon ?
If anyone can help me to find some other informations (papers references or something else) and perhaps answers, I would very appreciate any help of your.
Many thanks for this.
Laboratoire d'Ecologie Marine, Université de La Réunion
97715 Saint Denis messag CEDEX 9, France
Tel : (262) 262-93-81-57, Fax : (262) 262-93-86-85
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