Midbrain regions involved in call production of Japanese quail

Armitage, Sally E.; Seller, T.J.

doi:10.1007/bf01985673

Cited by 26 publications

(13 citation statements)

References 9 publications

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“…Thus, alterations not of VT expression but of the local density or activity of receptors for this peptide may mediate the behavioral and/or neuroanatomical effects of testosterone on RA. Another brain area that contains VT-ir fibers and terminallike structures (Kiss et al, 1987;Voorhuis et al, 1988b;De Kloet and Voorhuis, 1992;Viglietti-Panzica et al, 1997;present study) and participates in the control of vocalizations is the dorsomedial portion of the ICo (Newman, 1970;Brown, 1971;Phillips et al, 1972;De Lanerolle and Andrew, 1974;Armitage and Seller, 1981;Seller and Armitage, 1983). ICo contains androgen binding sites (zebra finch: Arnold et al, 1976;Japanese quail: Balthazart et al, 1992).…”

Section: Potential Roles Of the Central Vt Systemmentioning

confidence: 78%

Central vasotocin-immunoreactive system in a male passerine bird (Junco hyemalis)

et al. 1999

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Section: Potential Roles Of the Central Vt Systemmentioning

confidence: 78%

Central vasotocin-immunoreactive system in a male passerine bird (Junco hyemalis)

et al. 1999

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“…In previous studies on male quail, we have demonstrated close relationships between VT-ir fibers and aromatase cell bodies not only at the level of POM but also within the BSTm, the VMN, and the GCt (20,21). The ICo is an important brain center controlling vocalizations in galliforms and nonoscine birds (22)(23)(24). Many of these vocalizations are sexually dimorphic and under the control of androgens (25,26).…”

Section: Sex Dimorphism Of the Vasotocin System In The Avian Brainmentioning

confidence: 83%

The parvocellular vasotocin system of Japanese quail: a developmental and adult model for the study of influences of gonadal hormones on sexually differentiated and behaviorally relevant neural circuits.

Panzica

Balthazart

Pessatti³

et al. 2002

Environ Health Perspect

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Vasotocin (VT; the antidiuretic hormone of birds) is synthesized by diencephalic magnocellular neurons projecting to the neurohypophysis. A sexually dimorphic system of VT-immunoreactive (ir) parvocellular elements has been described within the male medial preoptic nucleus (POM) and the nucleus of the stria terminalis, pars medialis (BSTm). VT-ir fibers are present in many diencephalic and extradiencephalic locations, and quantitative morphometric analyses demonstrated their sexually dimorphic distribution in regions involved in the control of different aspects of reproduction. Moreover, systemic or intracerebroventricular injections of VT markedly inhibit the expression of some aspects of male sexual behavior. In adult animals, circulating levels of testosterone (T) have a profound influence on the VT immunoreactivity within BSTm, POM, and lateral septum. Castration markedly decreases the immunoreaction, whereas T-replacement therapy restores a situation similar to the intact birds. We observed no changes in gonadectomized females treated with T. These changes parallel similar changes in male copulatory behavior (not present in castrated male quail, fully expressed in castrated, T-treated males). The restoration by T of the VT immunoreactivity in castrated male quail could be fully mimicked by a treatment with estradiol (E(2)), suggesting that the aromatization of T into E(2) may play a key limiting role in both the activation of male sexual behavior and the induction of VT synthesis. This dimorphism has an organizational nature: administration of E(2) to quail embryos (a treatment that abolishes male sexual behavior) results in a dramatic decrease of the VT immunoreactivity in sexually dimorphic regions. Conversely, the inhibition of E(2) synthesis during embryonic life (a treatment that stimulates the expression of male copulatory behavior in treated females exposed in adulthood to T) results in a malelike distribution of VT immunoreactivity. The VT parvocellular system of the Japanese quail can therefore be considered an accurate marker of the sexual differentiation of brain circuits mediating copulatory behavior and could be a very sensitive indicator of the activity of estrogenlike substances on neural circuits.

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“…7 Testosterone implants at the level of nucleus intercollicularis activate crowing, an androgen-dependent maletypical vocalization. 96 Electrical stimulation of nucleus intercollicularis also elicits a wide variety of natural calls and influences respiratory rate, 5 and nucleus intercollicularis lesions reduce the occurrence frequency of crowing. 77,78 The increased glucose utilization in nucleus intercollicularis was specific to the CSB group while birds performing appetitive behaviour only (ASB group) did not display a change in metabolic activity in this nucleus by comparison with control birds.…”

Section: Auditory/vocal Areasmentioning

confidence: 99%

Performance of appetitive or consummatory components of male sexual behavior is mediated by different brain areas: a 2-deoxyglucose autoradiographic study

Dermon¹,

Stamatakis²,

Tlemçani³

et al. 1999

Neuroscience

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Abstract-The in vivo autoradiographic deoxyglucose method was used to identify the functional brain circuits that are involved in the performance of appetitive and consummatory components of male sexual behavior in Japanese quail (Coturnix japonica). Two groups of castrated, testosterone-treated male quail were trained during 12 sessions to associate the view of a female behind a window with the opportunity to interact freely and to copulate with her. They developed, as a consequence, a social proximity response (staying close and looking through the window providing a view of the female) that has been used in previous experiments to measure appetitive sexual behavior. A third control group (also castrated and treated with testosterone) was allowed to view the female but not to copulate with her and therefore did not develop this proximity response. 2-14 C-deoxyglucose was then injected i.p. to these birds and they were allowed to either copulate freely with a female (consummatory sexual behavior group) or express the social proximity response (appetitive sexual behavior group). The control group was provided a view of the female but these birds, although they were exposed to the same stimuli as birds in the appetitive group, did not express the social proximity response because they had never learned the association with the opportunity to copulate. Birds were killed 45 min after the deoxyglucose injection and their brains were processed for autoradiography. Densitometric analyses of the autoradiograms revealed that the expression of appetitive or consummatory aspects of male sexual behavior was associated with significant increases by comparison with the control group in the deoxyglucose incorporation in the nucleus mesencephalicus lateralis, pars dorsalis and in the nucleus leminsci lateralis. In addition, an increase in the deoxyglucose incorporation was specifically observed in the paleostriatum primitivum, rostral preoptic area, nucleus intercollicularis, nucleus interpeduncularis and third nerve but a decrease was observed in the dorsomedial part of the hippocampus and in the nucleus nervi oculomotori in birds of the consummatory sexual behavior group by comparison with controls. By contrast, in the appetitive sexual behavior group, significant increases in deoxyglucose incorporation were observed in two telencephalic areas, the intermediate hyperstriatum ventrale and neostriatum caudolaterale by comparison with the controls, but decreases were detected in the stratum griseum et fibrosum superficiale of optic tectum by comparison with the consummatory behavior group.These studies demonstrate that the performance of appetitive or consummatory components of male sexual behavior affects in a specific manner the deoxyglucose uptake and accumulation in specific regions of the quail brain. Changes in metabolic activity were observed in steroid-sensitive areas, in auditory, visual and vocal brain regions, and in brain nuclei related to motor behavior but also in association telencephalic and limbic structures. T...

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Midbrain regions involved in call production of Japanese quail

Cited by 26 publications

References 9 publications

Central vasotocin-immunoreactive system in a male passerine bird (Junco hyemalis)

Central vasotocin-immunoreactive system in a male passerine bird (Junco hyemalis)

The parvocellular vasotocin system of Japanese quail: a developmental and adult model for the study of influences of gonadal hormones on sexually differentiated and behaviorally relevant neural circuits.

Performance of appetitive or consummatory components of male sexual behavior is mediated by different brain areas: a 2-deoxyglucose autoradiographic study

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