Effect of forebrain implants of testosterone or estradiol on scent-marking and sexual behavior in male and female rabbits

Several species of bears are known to rub deliberately against trees and other objects, but little is known about why bears rub. Patterns in rubbing behavior of male and female brown bears (Ursus arctos) suggest that scent marking via rubbing functions to communicate among potential mates or competitors. Using DNA from bear hairs collected from rub objects in southwestern Alberta from 2011–2014 and existing DNA datasets from Montana and southeastern British Columbia, we determined sex and individual identity of each bear detected. Using these data, we completed a parentage analysis. From the parentage analysis and detection data, we determined the number of offspring, mates, unique rub objects where an individual was detected, and sampling occasions during which an individual was detected for each brown bear identified through our sampling methods. Using a Poisson regression, we found a positive relationship between bear rubbing behavior and reproductive success; both male and female bears with a greater number of mates and a greater number of offspring were detected at more rub objects and during more occasions. Our results suggest a fitness component to bear rubbing, indicate that rubbing is adaptive, and provide insight into a poorly understood behaviour.

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Estrogen Administered Neonatally Affects Adult Sexual Behavior in Male and Female Rats

Science ◽

10.1126/science.144.3615.185 ◽

1964 ◽

Vol 144 (3615) ◽

pp. 185-187 ◽

Cited By ~ 87

Author(s):

S. Levine ◽

R. Mullins

Keyword(s):

Sexual Behavior ◽

Female Rats ◽

Male And Female ◽

Male And Female Rats

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Watching Reality TV Programs With Concurrent Sexual and Alcohol Themes Is Associated With Risky Drinking and Sexual Experiences

Emerging Adulthood ◽

10.1177/2167696818754920 ◽

2018 ◽

Vol 7 (1) ◽

pp. 59-65 ◽

Cited By ~ 2

Author(s):

Janna L. Kim ◽

Deborah E. Schooler ◽

Sarah Kay Lazaro ◽

Jie Weiss

Keyword(s):

Sexual Behavior ◽

Emerging Adults ◽

Undergraduate Students ◽

Real Life ◽

Reality Tv ◽

Drinking Patterns ◽

Risky Drinking ◽

Female Undergraduate ◽

Alcohol Content ◽

Male And Female

The real-life risks associated with engaging in sexual behavior while intoxicated or high are rarely depicted on television. This study examined whether heavy exposure to sexual and alcohol content on fictional and reality TV programs would be associated with emerging adults’ risky sexual and alcohol experiences. Of particular interest were programs in which sexual and alcohol themes were perceived to co-occur most strongly and the genre of TV exposure. Participants were 320 male and female undergraduate students between 18 and 25 years of age ( M = 20). Results showed heavier exposure to reality TV programs perceived to have strong, concurrent sexual and alcohol themes, and perceiving reality TV content as realistic was each associated with more harmful drinking patterns and more frequent sexual behavior while intoxicated or high. Methodological and health implications of the findings are discussed.

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Diurnal Variation in Scent Marking Behavior in Captive Male and Female Common Marmosets, Callithrix jacchus

Biological Rhythm Research ◽

10.1076/brhm.32.2.169.1363 ◽

2001 ◽

Vol 32 (2) ◽

pp. 169-177 ◽

Cited By ~ 6

Author(s):

Silvana Lúcio Nogueira ◽

Maria Bernardete Cordeiro de Sousa ◽

Ciro Franco de Medeiros Neto ◽

Maria da Paz de Oliveira Costa

Keyword(s):

Diurnal Variation ◽

Scent Marking ◽

Callithrix Jacchus ◽

Common Marmosets ◽

Male And Female

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Mechanism and Ecological Significance of Sperm Storage in the Northern Fulmar with Reference to Its Occurrence in Other Birds

The Auk ◽

10.1093/auk/100.3.593 ◽

1983 ◽

Vol 100 (3) ◽

pp. 593-600 ◽

Cited By ~ 38

Author(s):

Scott A. Hatch

Keyword(s):

Sexual Behavior ◽

Reproductive System ◽

Sperm Storage ◽

Egg Laying ◽

Ecological Significance ◽

Northern Fulmar ◽

Male And Female ◽

Fulmarus Glacialis ◽

Oceanodroma Leucorhoa ◽

Horned Puffin

Abstract Sperm-storage glands were found in the uterovaginal (UV) region of the oviduct in Northern Fulmars (Fulmarus glacialis), Horned Puffins (Fratercula corniculata), and Leach's Storm-Petrels (Oceanodroma leucorhoa) collected before or shortly after egg laying. Previously described only in domestic Galliformes, UV sperm-storage glands may prove to be a common feature of the avian reproductive system. There is as yet no compelling explanation of their function in the Horned Puffin. In the Northern Fulmar, and probably in other petrels, however, sperm-storage glands allow the separation of the male and female over pelagic waters for several weeks immediately before egg laying. The likelihood of prolonged viability of sperm in the female reproducitve tract should be considered in interpreting the sexual behavior of other wild birds.

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