NDLI: Direct male-male competition can facilitate invasion of new colour types in Lake Victoria cichlids

Content Provider	Springer Nature Link
Author	Dijkstra, Peter D. Seehausen, Ole Groothuis, Ton G. G.
Copyright Year	2005
Abstract	The possibility that disruptive sexual selection alone can cause sympatric speciation is currently a subject of much debate. The initial difficulty for new and rare ornament phenotypes to invade a population, and the stabilisation of the resulting polymorphism in trait and preference make this hypothesis problematic. Recent theoretical work indicates that the invasion is facilitated if males with the new phenotype have an initial advantage in male-male competition. We studied a pair of sympatric incipient species of cichlids from Lake Victoria, in which the red (Pundamilia nyererei) and blue males (P. pundamilia) vigorously defend territories. Other studies suggested that red phenotypes may have repeatedly invaded blue populations in independent episodes of speciation. We hypothesised that red coloration confers an advantage in male-male competition, assisting red phenotypes to invade. To test this hypothesis, we staged contests between red and blue males from a population where the phenotypes are interbreeding morphs or incipient species. We staged contests under both white and green light condition. Green light effectively masks the difference between red and blue coloration. Red males dominated blue males under white light, but their competitive advantage was significantly diminished under green light. Contests were shorter when colour differences were visible. Experience of blue males with red males did not affect the outcome of a contest. The advantage of red over blue in combats may assist the red phenotype to invade blue populations. The apparently stable co-existence of red and blue incipient species in many populations of Lake Victoria cichlids is discussed.
Starting Page	136
Ending Page	143
Page Count	8
File Format	PDF
ISSN	03405443
Journal	Behavioral Ecology and Sociobiology
Volume Number	58
Issue Number	2
e-ISSN	14320762
Language	English
Publisher	Springer-Verlag
Publisher Date	2005-03-02
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cichlids Lake Victoria Sexual selection Speciation Male-male competition
Content Type	Text
Resource Type	Article
Subject	Animal Science and Zoology Ecology, Evolution, Behavior and Systematics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Can male-male competition stabilize speciation? A test in Lake Victoria haplochromine cichlid fish

Social stimulation, nuptial colouration, androgens and immunocompetence in a sexual dimorphic cichlid fish

Territory quality affects female preference in a Lake Victoria cichlid fish

Female preference in the context of male–male interactions in Maylandia zebra of Lake Malawi

Metabolism, oxidative stress and territorial behaviour in a female colour polymorphic cichlid fish

The effect of male coloration on female mate choice in closely related Lake Victoria cichlids (Haplochromis nyererei complex)

Females learn from mothers and males learn from others. The effect of mother and siblings on the development of female mate preferences and male aggression biases in Lake Victoria cichlids, genus Mbipia

Male-male competition drives sexual selection and group spawning in the Omei treefrog, Rhacophorus omeimontis

Preference polymorphism for coloration but no speciation in a population of Lake Victoria cichlids

Direct male-male competition can facilitate invasion of new colour types in Lake Victoria cichlids

Similar Documents

Can male-male competition stabilize speciation? A test in Lake Victoria haplochromine cichlid fish

Social stimulation, nuptial colouration, androgens and immunocompetence in a sexual dimorphic cichlid fish

Territory quality affects female preference in a Lake Victoria cichlid fish

Female preference in the context of male–male interactions in Maylandia zebra of Lake Malawi

Metabolism, oxidative stress and territorial behaviour in a female colour polymorphic cichlid fish

The effect of male coloration on female mate choice in closely related Lake Victoria cichlids (Haplochromis nyererei complex)

Females learn from mothers and males learn from others. The effect of mother and siblings on the development of female mate preferences and male aggression biases in Lake Victoria cichlids, genus Mbipia

Male-male competition drives sexual selection and group spawning in the Omei treefrog, Rhacophorus omeimontis

Preference polymorphism for coloration but no speciation in a population of Lake Victoria cichlids

Direct male-male competition can facilitate invasion of new colour types in Lake Victoria cichlids