Nom du corpus

Corpus Systématique Animale

Titre du document

Patterns of coexistence in sexual and asexual species of Cnemidophorus lizards

Lien vers le document
Éditeur
Springer (journals)
Langue(s) du document
Anglais
Type de document
Research-article
Mots-clés d'auteur
  • Cnemidophorus
  • Niche breadth
  • Asexuality
  • Parthenogenetic
Nom du fichier dans la ressource
Reptiles_v2b_00497
Auteur(s)
  • Ted J. Case
Affiliation(s)
  • Department of Biology, C-016, University of California, San Diego, 92093, La Jolla, CA, USA
Résumé

The lizard genus Cnemidophorus (family Teiidae) contains sexual as well as parthenogenetic species. The theoretical two-fold fitness advantage of asexuality does not translate into any obvious distributional or numerical superiority of the parthenogenic species in the southwestern US and northern Mexico where their ranges overlap. I tested the prediction that the genetically diverse sexual species should have a higher between-individual niche width than a similar sympatric asexual species by studying the prey in stomach contents of sympatric and allopatric populations of C. tigris (sexual) and C. sonorae (asexual) in southern Arizona. The expectation proved true for niche breadths based on both prey length and prey taxa categories. The within-individual component of niche breadth was not different between species. Meaningful comparisons between species in sympatry and allopatry are confounded by the uncontrolled differences in the availability and diversity of food items between sites. Before the generality of these results can be assessed the study should be repeated in other areas where sexual and asexual species are syntopic and of similar body size.

Catégories Science-Metrix
  • 1 - natural sciences
  • 2 - biology
  • 3 - ecology
Catégories INIST
  • 1 - sciences appliquees, technologies et medecines
  • 2 - sciences biologiques et medicales
  • 3 - sciences biologiques fondamentales et appliquees. psychologie
  • 4 - phytopathologie. zoologie agricole. protection des cultures et des forets
Catégories Scopus
  • 1 - Life Sciences ; 2 - Agricultural and Biological Sciences ; 3 - Ecology, Evolution, Behavior and Systematics
Catégories WoS
  • 1 - science ; 2 - ecology
Identifiant ISTEX
996E1F24756C6C6F7718AFC7EA8F7027DFEFDD1D
Revue

Oecologia

Année de publication
1990
Présence de XML structuré
Non
Version PDF
1.3
Score qualité du texte
9.064
Sous-corpus
  • Reptiles
Type de publication
Journal
ark:/67375/1BB-9V67XHH4-2
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