The dera enemy phenomenon in the collared lizard, Crotaphytus collaris, with a cautionary note on experimental methodology
Article Abstract:
Collared lizard, Crotaphytus collaris, show much less aggression towards their intruding neighbors than towards strangers. Results of a study indicated that resident collared lizard's aggressive responses towards an neighbor were significantly weaker than those towards an unknown intruder. Decreased aggression towards a neighbor supports the dear enemy hypothesis which states that non-neighbors are targeted with more intense aggression than neighbors. Support for this hypothesis has in the past been obtained from neutral arena studies which do not replicate the real field situation.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1992
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Social inhibition of territorial behaviour in yearling male collared lizards, Crotaphytus collaris
Article Abstract:
Yearling male collard lizards, Crotaphytus collaris, increased their patrol, display and intrasexual encounters in the absence of two-year and older males. The significant increase in intersexual encounters when there are no adult males around suggests that females become more receptive to yearling the longer adult males were absent. These findings indicate that social behavioral patterns of male collard lizards are based on social feedback.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1998
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Adult male collared lizards, Crotaphytus collaris, increase aggression towards displaced neighbours
Article Abstract:
Research revealed that adult male collared lizards can be aggressive towards displaced neighbors. Specifically, they can recognize individuals as displaced neighbors, but respond to them based on the threat they pose.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 2003
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