Body temperature, size, nuptial colouration and mating success in male Moor Frogs (Rana arvalis)

Attila Hettyey, G. Herczeg, Anssi Laurila, Pierre André Crochet, Juha Merilä

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Variation in colouration has rarely been related to sexual selection in anuran amphibians, even though such a relationship has been proven for many other vertebrate taxa. Male and female Moor Frogs (Rana arvalis) have a cryptic brown colour pattern, but males develop a conspicuous blue nuptial colouration during the reproductive season. To investigate the possibility that colouration plays a role in sexual selection in this species, we studied the temporal variation in blue colouration, determined if body size or body temperature affected blueness and investigated if blueness of males could be related to their mating success. Results confirmed previous observations that males develop and maintain blue colouration for only a very few nights during peak reproductive activity. Colouration of males was unrelated to body size, but males exhibiting higher body temperatures were somewhat bluer than males with lower body temperatures. Further, males in amplexus had higher body temperatures than non-mated males. Finally, mating success was positively related to blueness in small males, whereas in large males no such relationship was detected. While our results align with the hypothesis that the bright blue colouration of males may be a target of sexual selection, alternative explanations are also discussed.

Original languageEnglish
Pages (from-to)37-43
Number of pages7
JournalAmphibia Reptilia
Volume30
Issue number1
DOIs
Publication statusPublished - Feb 1 2009

Fingerprint

mating success
body temperature
Rana
frog
frogs
color
sexual selection
moor
body size
amphibian
temporal variation
amphibians
breeding season
vertebrate
vertebrates

Keywords

  • Male-male competition
  • Mate choice
  • Natural history
  • Reproduction
  • Sexual selection

ASJC Scopus subject areas

  • Animal Science and Zoology

Cite this

Body temperature, size, nuptial colouration and mating success in male Moor Frogs (Rana arvalis). / Hettyey, Attila; Herczeg, G.; Laurila, Anssi; Crochet, Pierre André; Merilä, Juha.

In: Amphibia Reptilia, Vol. 30, No. 1, 01.02.2009, p. 37-43.

Research output: Contribution to journalArticle

Hettyey, Attila ; Herczeg, G. ; Laurila, Anssi ; Crochet, Pierre André ; Merilä, Juha. / Body temperature, size, nuptial colouration and mating success in male Moor Frogs (Rana arvalis). In: Amphibia Reptilia. 2009 ; Vol. 30, No. 1. pp. 37-43.
@article{36f382c77f654927bbaee1f5ef832b3e,
title = "Body temperature, size, nuptial colouration and mating success in male Moor Frogs (Rana arvalis)",
abstract = "Variation in colouration has rarely been related to sexual selection in anuran amphibians, even though such a relationship has been proven for many other vertebrate taxa. Male and female Moor Frogs (Rana arvalis) have a cryptic brown colour pattern, but males develop a conspicuous blue nuptial colouration during the reproductive season. To investigate the possibility that colouration plays a role in sexual selection in this species, we studied the temporal variation in blue colouration, determined if body size or body temperature affected blueness and investigated if blueness of males could be related to their mating success. Results confirmed previous observations that males develop and maintain blue colouration for only a very few nights during peak reproductive activity. Colouration of males was unrelated to body size, but males exhibiting higher body temperatures were somewhat bluer than males with lower body temperatures. Further, males in amplexus had higher body temperatures than non-mated males. Finally, mating success was positively related to blueness in small males, whereas in large males no such relationship was detected. While our results align with the hypothesis that the bright blue colouration of males may be a target of sexual selection, alternative explanations are also discussed.",
keywords = "Male-male competition, Mate choice, Natural history, Reproduction, Sexual selection",
author = "Attila Hettyey and G. Herczeg and Anssi Laurila and Crochet, {Pierre Andr{\'e}} and Juha Meril{\"a}",
year = "2009",
month = "2",
day = "1",
doi = "10.1163/156853809787392784",
language = "English",
volume = "30",
pages = "37--43",
journal = "Amphibia - Reptilia",
issn = "0173-5373",
publisher = "Brill",
number = "1",

}

TY - JOUR

T1 - Body temperature, size, nuptial colouration and mating success in male Moor Frogs (Rana arvalis)

AU - Hettyey, Attila

AU - Herczeg, G.

AU - Laurila, Anssi

AU - Crochet, Pierre André

AU - Merilä, Juha

PY - 2009/2/1

Y1 - 2009/2/1

N2 - Variation in colouration has rarely been related to sexual selection in anuran amphibians, even though such a relationship has been proven for many other vertebrate taxa. Male and female Moor Frogs (Rana arvalis) have a cryptic brown colour pattern, but males develop a conspicuous blue nuptial colouration during the reproductive season. To investigate the possibility that colouration plays a role in sexual selection in this species, we studied the temporal variation in blue colouration, determined if body size or body temperature affected blueness and investigated if blueness of males could be related to their mating success. Results confirmed previous observations that males develop and maintain blue colouration for only a very few nights during peak reproductive activity. Colouration of males was unrelated to body size, but males exhibiting higher body temperatures were somewhat bluer than males with lower body temperatures. Further, males in amplexus had higher body temperatures than non-mated males. Finally, mating success was positively related to blueness in small males, whereas in large males no such relationship was detected. While our results align with the hypothesis that the bright blue colouration of males may be a target of sexual selection, alternative explanations are also discussed.

AB - Variation in colouration has rarely been related to sexual selection in anuran amphibians, even though such a relationship has been proven for many other vertebrate taxa. Male and female Moor Frogs (Rana arvalis) have a cryptic brown colour pattern, but males develop a conspicuous blue nuptial colouration during the reproductive season. To investigate the possibility that colouration plays a role in sexual selection in this species, we studied the temporal variation in blue colouration, determined if body size or body temperature affected blueness and investigated if blueness of males could be related to their mating success. Results confirmed previous observations that males develop and maintain blue colouration for only a very few nights during peak reproductive activity. Colouration of males was unrelated to body size, but males exhibiting higher body temperatures were somewhat bluer than males with lower body temperatures. Further, males in amplexus had higher body temperatures than non-mated males. Finally, mating success was positively related to blueness in small males, whereas in large males no such relationship was detected. While our results align with the hypothesis that the bright blue colouration of males may be a target of sexual selection, alternative explanations are also discussed.

KW - Male-male competition

KW - Mate choice

KW - Natural history

KW - Reproduction

KW - Sexual selection

UR - http://www.scopus.com/inward/record.url?scp=60449101020&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=60449101020&partnerID=8YFLogxK

U2 - 10.1163/156853809787392784

DO - 10.1163/156853809787392784

M3 - Article

VL - 30

SP - 37

EP - 43

JO - Amphibia - Reptilia

JF - Amphibia - Reptilia

SN - 0173-5373

IS - 1

ER -