Role of the amygdala in the reproductive and aggressive behavior of the lizard, Anolis carolinensis

@article{Greenberg1984RoleOT,
  title={Role of the amygdala in the reproductive and aggressive behavior of the lizard, Anolis carolinensis
},
  author={N. Greenberg and M. Scott and D. Crews},
  journal={Physiology \& Behavior},
  year={1984},
  volume={32},
  pages={147-151}
}
Thirteen male green anole lizards were lesioned in the ventromedial nucleus (VMN) of the posterior dorsal ventricular ridge ("amygdala") and/or the paleostriatum (PS) to determine the influence of these structures on assertion and challenge displays addressed to male intruders, or courtship displays and copulatory neckgrip directed toward females. Lesions that affected both VMN and PS reduced or eliminated both challenge and courtship displays as well as the neckgrip, a crucial component in… Expand
Seasonal and Sexual Dimorphisms in the Green Anole Forebrain
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The results indicate that T can stimulate behavior in the nonbreeding season and suggest that a dissociation exists between the regulation of the courtship display and soma size of relevant brain regions. Expand
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Changes in behavior and neural and/or muscular morphology are not always parallel and differences in responsiveness to T exist across seasons and among tissues. Expand
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A double dissociation in the functional connections required for attraction to volatile sexual odors and copulation is demonstrated and suggested, more broadly, that appetitive and consummatory reproductive behaviors are mediated by distinct neural pathways. Expand
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TLDR
Examination of sex and seasonal differences in estimated brain region volume and total neuron number in the preoptic area, AMY, and the ventromedial hypothalamus suggests the structure of limbic brain regions is dynamic in adulthood and that parallels between morphology and the expression of masculine behavior exist for the POA, whereas other relationships are more complicated. Expand
Androgen receptor expression and morphology of forebrain and neuromuscular systems in male green anoles displaying individual differences in sexual behavior
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Higher levels of male courtship behavior result in (or are the result of) enhanced courtship muscle and amygdala morphology, and that androgen-sensitive tissue in studs may be more responsive to testosterone than duds, however, some mechanism(s) other than androgen receptor expression likely confer this difference in responsiveness. Expand
Laterality of aggressive responses in Anolis
TLDR
The results suggest that the lizard Anolis, like humans, rats, and chicks, may mediate aggressive responses predominantly through right-hemispheric brain mechanisms. Expand
Estradiol facilitates mounting behavior in male green anole lizards
TLDR
The present data are consistent with the idea that it facilitates a component of reproduction in the green anole, as in species from other taxa. Expand
Effects of season, testosterone and female exposure on c-fos expression in the preoptic area and amygdala of male green anoles
TLDR
It appears that in the male green anole, T may diminish c-fos expression (likely in inhibitory neurons) in the POA and AMY to create a permissive environment in which the appropriate behavioral response can be displayed. Expand
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