Article (Scientific journals)
Adrenocorticotropic hormone and cyclic adenosine monophosphate are involved in the control of shark bioluminescence
Duchatelet, Laurent; Delroisse, Jérôme; Pinte, Nicolas et al.
2019In Photochemistry and Photobiology, 96 (1), p. 37-45
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Abstract :
[en] Among Etmopteridae and Dalatiidae, luminous species use hormonal control to regulate bioluminescence. Melatonin (MT) triggers light emission and, conversely, alpha melanocyte- stimulating hormone (a-MSH) actively reduces ongoing luminescence. Prolactin (PRL) acts differentially, triggering light emission in Etmopteridae and inhibiting it in Dalatiidae. Interestingly, these hormones are also known as regulators of skin pigment movements in vertebrates. One other hormone, the adrenocorticotropic hormone (ACTH), also members of the skin pigmentation regulators, is here pharmacologically tested on the light emission. Results show that ACTH inhibits luminescence in both families. Moreover, as MT and a-MSH/ ACTH receptors are members of the G-protein coupled receptor (GPCR) family, we investigated the effect of hormonal treatments on the cAMP level of photophores through specific cAMP assays. Our results highlight the involvement of ACTH and cAMP in the control of light emission in sharks and suggest a functional similarity between skin pigment migration and luminescence control, this latter being mediated by pigment movements in the light organ-associated iris-like structure cells.
Research center :
BIOSYS - Biosys
Disciplines :
Architecture
Biotechnology
Phytobiology (plant sciences, forestry, mycology...)
Zoology
Author, co-author :
Duchatelet, Laurent
Delroisse, Jérôme  ;  Université de Mons > Faculté des Sciences > Service de Biologie des Organismes Marins et Biomimétisme
Pinte, Nicolas
Sato, Keiichi
Ho, Hsuan-Ching
Mallefet, Jérôme
Language :
English
Title :
Adrenocorticotropic hormone and cyclic adenosine monophosphate are involved in the control of shark bioluminescence
Publication date :
10 October 2019
Journal title :
Photochemistry and Photobiology
ISSN :
0031-8655
Publisher :
Wiley-Blackwell, United States - Kansas
Volume :
96
Issue :
1
Pages :
37-45
Peer reviewed :
Peer Reviewed verified by ORBi
Research unit :
S864 - Biologie des Organismes Marins et Biomimétisme
Research institute :
R100 - Institut des Biosciences
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