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Territoriality and allometry in a population of harduns Laudakia stellio on Rhodes

Artikel i vetenskaplig tidskrift
Författare Jon Loman
Torbjörn Helin
Mats Olsson
Publicerad i Bulletin de la Société herpétologique de France
Volym 145-146
Sidor 205-218
ISSN 0754-9962
Publiceringsår 2013
Publicerad vid
Sidor 205-218
Språk en
Ämnesord Agamidae, home range, sexual dimorphism
Ämneskategorier Biologiska vetenskaper, Terrestrisk ekologi, Etologi

Sammanfattning

Harduns (Laudakia stellio (Linnaeus, 1758) were captured in April and June outside the city of Rhodes. Snout-vent length, weight, head width and jaw length was measured on all 74 individuals. Males were identified on basis of present precloacal glands. Larger males were heavier and had larger heads in relation to body length than females. Twenty nine agamas at a subsite were also painted with numbers visible at a distance and their home ranges were mapped. Some of the adult males were frequently observed. They maintained exclusive home ranges. The home ranges of some, usually smaller, males overlapped each other and those of the males in the first group. Two out of three large territorial males kept their territories from April to June while one (who had lost in weight) was replaced. Also the pattern of female home ranges suggests a tendency to intrasexual territoriality, especially if the smallest females are not considered. The home ranges of juveniles overlapped each other and those of adult males and females. The April juvenile home ranges were particularly large. Open aggression was rare. Only when an apparently strange male entered the study area was he physically attacked.

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