Arginine vasotocin induces calling behavior with a female social stimulus and interacts with gonadotropins to affect sexual behaviors in male Xenopus tropicalis

PHYSIOLOGY & BEHAVIOR

卷:151

Article

Miranda, Robert A.¹  Searcy, Brian T.¹  Propper, Catherine R.¹ 

[1] No Arizona Univ, Dept Biol Sci, Flagstaff, AZ 86011 USA

关键词: Arginine vasotocin;    Arginine vasopressin;    Gonadotropin;    Xenopus tropicalis;    Reproduction;    Communication;   

DOI  :  10.1016/j.physbeh.2015.06.031

来源: Elsevier

【 摘 要 】

Arginine vasotocin (AVT) and the mammalian homologue, arginine vasopressin (AVP), modulate vertebrate social behaviors, including vocalizations in male anurans. To study the impact of AVT and social stimuli on calling in male Xenopus tropicalis, we injected males with vehicle, 1 mu g, or 10 mu g AVT and recorded vocalizations under four social contexts (no stimulus, with male call playback, with a female, and with call playback and a female). More males called when injected with 10 mu g AVT. Furthermore, calling males called only when paired with a female. We identified four call types: long fast trill; short fast trill; slow trill; or click. Next, we injected males with vehicle, 10 mu g, or 20 mu g AVT and recorded vocalizations with or without a female. AVT treatment did not affect calling in this experiment, but we confirmed that more males, regardless of AVT treatment, called when a female was present. Then we evaluated the effect of human chorionic gonadotropin (hCG) on male sexual behavior. 20 IU hCG elevated behavior compared to controls while the 10 IU hCG treatment group was not different from either treatment. Last, we examined the effect of AVT on hCG-induced reproductive behavior. Males were injected with 10 IU hCG or with 10 IU hCG and 20 mu g AVT. Males receiving hCG and AVT clasped and called significantly more than males receiving hCG only. Our results suggest that AVT and a female stimulus induce vocalizations in a male pipid anuran, X. tropicalis, and the interaction between gonadotropins and neurohormones influences reproductive behaviors in this anuran amphibian. (C) 2015 Elsevier Inc. All rights reserved.

【 授权许可】

Free