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SOURCES OF COLOUR PATTERN VARIATION IN MEDITERRANEAN PSAMMODROMUS ALGIRUS

SOURCES OF COLOUR PATTERN VARIATION IN MEDITERRANEAN PSAMMODROMUS ALGIRUS Netherlands Journal of Zoology 52 (1): 43-60 (2002) SOURCES OF COLOUR PATTERN VARIATION IN MEDITERRANEAN PSAMMODROMUS ALGIRUS by MIGUEL A. CARRETERO * ( Centro de Investigação em Biodiversidade e Recursos Genéticos (CIBIO), Campus Agrário de Vairão. 4485-661 Vairão, Portugal ) ABSTRACT Colour pattern and its relation to sex, size and season were investigated in three coastal populations of Psammodromus algirus from NE Spain. Eight pattern variables, as well as body size and reproductive parameters, were recorded for 430 specimens. Results show that yellow head pattern was present in both males and females and depended on body size and locality. Furthermore, its seasonal variation was associated with reproductive activity in males. Orange infralabials appear almost exclusively in adult males. Blue ocelli constitute a potential size signal in intraspeciŽ c interactions, especially in males. The attainment of sexual maturity modiŽ ed tail colour (antipredatory) and dorsolateral stripes (cryptic). Bright spots on hindlimbs varied between sites. Colour pattern is interpreted as a trade-off between different selective pressures including crypsis and intraspeciŽ c interactions. Most pattern variation is due to body size differences and only secondarily to sexual dimorphism. A hypothesis invoking differences in social system is proposed to explain the striking http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Netherlands Journal of Zoology (in 2003 continued as Animal Biology) Brill

SOURCES OF COLOUR PATTERN VARIATION IN MEDITERRANEAN PSAMMODROMUS ALGIRUS

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Publisher
Brill
Copyright
© 2002 Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2960
eISSN
1568-542X
DOI
10.1163/156854202760405177
Publisher site
See Article on Publisher Site

Abstract

Netherlands Journal of Zoology 52 (1): 43-60 (2002) SOURCES OF COLOUR PATTERN VARIATION IN MEDITERRANEAN PSAMMODROMUS ALGIRUS by MIGUEL A. CARRETERO * ( Centro de Investigação em Biodiversidade e Recursos Genéticos (CIBIO), Campus Agrário de Vairão. 4485-661 Vairão, Portugal ) ABSTRACT Colour pattern and its relation to sex, size and season were investigated in three coastal populations of Psammodromus algirus from NE Spain. Eight pattern variables, as well as body size and reproductive parameters, were recorded for 430 specimens. Results show that yellow head pattern was present in both males and females and depended on body size and locality. Furthermore, its seasonal variation was associated with reproductive activity in males. Orange infralabials appear almost exclusively in adult males. Blue ocelli constitute a potential size signal in intraspeciŽ c interactions, especially in males. The attainment of sexual maturity modiŽ ed tail colour (antipredatory) and dorsolateral stripes (cryptic). Bright spots on hindlimbs varied between sites. Colour pattern is interpreted as a trade-off between different selective pressures including crypsis and intraspeciŽ c interactions. Most pattern variation is due to body size differences and only secondarily to sexual dimorphism. A hypothesis invoking differences in social system is proposed to explain the striking

Journal

Netherlands Journal of Zoology (in 2003 continued as Animal Biology)Brill

Published: Jan 1, 2002

Keywords: colour pattern; lacertidae; sexual dimorphism.; psammodromus algirus

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