Mating behavior of Anolis punctatus (Squamata: Dactyloidae) in the Brazilian Amazonia

Background: Aging is associated neuroendocrine changes in women. Animals can be used to model these changes, as well as changes in reproductive behavior. Objective: The current study was designed to characterize mating behavior across age and assess the effects of age and sexual history on mating behavior. Methods: Sexual motivation was assessed using the partner-preference test, in which a female rat is given the choice to interact with a same-sex conspecific or a sexually-vigorous male rat, with which she can mate. Results: Across repeated mating tests (2-12 months of age), female rats spent more time with the male, displayed more solicitation behaviors, were less likely to leave the male after mounts, but visited both stimulus animals less frequently. Comparing a separate group of age-matched, hormoneyoked female rats mated for the first time at 12 months of age to female rats mated for the first time at 2 months of age showed that the 12 month rats visited both stimulus animals less, were less likely to leave the male after mounts, took longer to return to the male after mounts, and displayed fewer solicitation behaviors than their younger counterparts. Relative to middle-aged female rats once they were sexually experienced, 12 month naïve rats spent less time with the male, were more likely to leave the male after mounts, and displayed fewer solicitation behaviors. Furthermore, 12 month naïve rats failed to discriminate between the stimulus animals, visiting both stimulus animals at the same rate unlike 2 month naïve or 12 month experienced rats. Conclusion: Taken together, these results suggest that aging affects some measures of sexual behavior, but most effects of age can be mitigated by regular, repeated mating.

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Personhood and youth-making in contemporary Indigenous Amazonia

The Oxford Handbook of Global South Youth Studies ◽

10.1093/oxfordhb/9780190930028.013.8 ◽

2020 ◽

Author(s):

Pirjo Kristiina Virtanen ◽

Alessandra Severino da Silva Manchinery

Keyword(s):

Young People ◽

Global South ◽

The Body ◽

Body Politics ◽

Indigenous Youth ◽

Social Responsibilities ◽

Brazilian Amazonia ◽

University Studies ◽

Social Belonging ◽

Indigenous Voices

This essay looks at the construction of personhood in Brazilian Amazonia from the perspective of Indigenous youth. In Amazonian sociocosmology, personhood is constructed relationally, a process in which the body is a distinctive factor. Consequently, during schooling and university studies, young people have responded to and resisted representations and policies that have often silenced Indigenous voices and limited their fabrication of bodies. The contemporary social responsibilities of Indigenous youth and the challenges faced in undertaking them shape how their subjectivity, agency, and recognized social belonging are being constantly increased, removed, or even denied. The essay draws from anthropological theories of relational personhood, as well as ideas of geo- and body-politics present in theorizing on the Global South.

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Species Differences in Light-Influenced Mating Behavior in Drosophila

The American Naturalist ◽

10.1086/282664 ◽

1970 ◽

Vol 104 (937) ◽

pp. 307-309 ◽

Cited By ~ 8

Author(s):

Joseph Grossfield

Keyword(s):

Mating Behavior ◽

Species Differences

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A unique mating pattern of Panorpodes kuandianensis (Mecoptera: Panorpodidae)

Contributions to Zoology ◽

10.1163/18759866-08603003 ◽

2017 ◽

Vol 86 (3) ◽

pp. 229-237 ◽

Cited By ~ 4

Author(s):

Xin Tong ◽

Lu Jiang ◽

Bao-Zhen Hua

Keyword(s):

Mating Behavior ◽

Sexual Conflict ◽

Sperm Transfer ◽

Nuptial Gift ◽

Mating Pattern ◽

End To End ◽

Mating Behaviors ◽

First Time

Sexually reproductive insects exhibit diverse mating behaviors. However, the mating pattern remains unknown for Panorpodes of Panorpodidae to date. In this study, we investigated the mating behavior and copulatory mechanism of the short-faced scorpionfly Panorpodes kuandianensis Zhong, Zhang and Hua, 2011 for the first time. The results show that the male provides a salivary mass as a nuptial gift to the female and starts to copulate with the female in a V-shaped position, then changes to an end-to-end position by temporarily twisting the female abdominal segments VII−IX by 180°. During mating the basal processes and the basal teeth of the gonostyli and the hypandrium are used to obtain copulation and sustain the coupling of genitalia to secure successful sperm transfer. This unique mating pattern is greatly different from that of other Mecoptera reported and is likely evolved as an adaptation in the context of sexual conflict.

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