Hormonal regulation of female nuptial coloration in a fish.

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Sköld, Helen NilssonGothenburg University,Göteborgs universitet,Institutionen för marin ekologi,Department of Marine Ecology (author)

Hormonal regulation of female nuptial coloration in a fish.

Article/chapterEnglish2008

Publisher, publication year, extent ...

Elsevier BV,2008

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LIBRIS-ID:oai:gup.ub.gu.se/114401
https://gup.ub.gu.se/publication/114401URI
https://doi.org/10.1016/j.yhbeh.2008.05.018DOI
https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-18769URI

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Language:English

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SwePubSwePub

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Subject category:ref swepub-contenttype
Subject category:art swepub-publicationtype

Notes

#0994 twospots
Physiological color change in camouflage and mating is widespread among fishes, but little is known about the regulation of such temporal changes in nuptial coloration and particularly concerning female coloration. To better understand regulation of nuptial coloration we investigated physiological color change in female two-spotted gobies (Gobiusculus flavescens). Females of this species develop an orange belly that acts as an ornament. The orange color is caused by the color of the gonads combined with the chromathophore based pigmentation and transparency of the skin. Often during courtship and female-female competition, a rapid increase in orange coloration, in combination with lighter sides and back that increases skin and body transparency, gives the belly an intense 'glowing' appearance. To understand how this increased orange coloration can be regulated we analysed chromatic and transparency effects of neurohumoral agents on abdominal skin biopsies in vitro. We found prolactin and alpha-melanocyte stimulating hormone (MSH) to increase orange coloration of the skin. By contrast, melatonin and noradrenaline increased skin transparency, but had a negative effect on orange coloration. However, mixtures of melatonin and MSH, or melatonin and prolactin, increased both orange coloration and transparency. This effect mimics the chromatic 'glow' effect that commonly takes place during courtship and intra sexual aggression. Notably, not only epidermal chromatophores but also internal chromatophores lining the peritoneum responded to hormone treatments. There were no chromatic effects of the sex steroids 17beta-estradiol, testosterone or 11-ketotestosterone. We hypothesize that similar modulation of nuptial coloration by multiple hormones may be widespread in nature.

Subject headings and genre

NATURVETENSKAP Biologi hsv//swe
NATURAL SCIENCES Biological Sciences hsv//eng
NATURVETENSKAP Biologi Evolutionsbiologi hsv//swe
NATURAL SCIENCES Biological Sciences Evolutionary Biology hsv//eng
NATURVETENSKAP Biologi Cellbiologi hsv//swe
NATURAL SCIENCES Biological Sciences Cell Biology hsv//eng
NATURVETENSKAP Biologi Etologi hsv//swe
NATURAL SCIENCES Biological Sciences Behavioural Sciences Biology hsv//eng
NATURVETENSKAP Biologi Zoologi hsv//swe
NATURAL SCIENCES Biological Sciences Zoology hsv//eng
Animals
Chromatophores
drug effects
metabolism
physiology
Courtship
Drug Combinations
Female
Fishes
physiology
Hormones
pharmacology
physiology
Male
Melatonin
pharmacology
Norepinephrine
pharmacology
Sex Characteristics
Sexual Behavior
Animal
physiology
Skin Pigmentation
drug effects
physiology
Tissue Distribution
drug effects
sexual selection
Aquatic Ecology
Evolutionary Biology

Added entries (persons, corporate bodies, meetings, titles ...)

Amundsen, Trond (author)
Svensson, P. Andreas (author)
Mayer, Ian (author)
Bjelvenmark, Jens,1971Gothenburg University,Göteborgs universitet,Institutionen för marin ekologi,Department of Marine Ecology(Swepub:gu)xbjeje (author)
Forsgren, Elisabet (author)
Göteborgs universitetInstitutionen för marin ekologi (creator_code:org_t)

Related titles

In:Hormones and behavior: Elsevier BV54:4, s. 549-561095-68670018-506X

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By the author/editor: Sköld, Helen Nil ...; Amundsen, Trond; Svensson, P. And ...; Mayer, Ian; Bjelvenmark, Jen ...; Forsgren, Elisab ...

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NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...

NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Evolutionary Bio ...

NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Cell Biology

NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Behavioural Scie ...

NATURAL SCIENCES: NATURAL SCIENCES; and Biological Scien ...; and Zoology

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By the university: University of Gothenburg; Linnaeus University

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