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  • 1
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 267 (1977), S. 344-345 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Courtship and copulation in Thamnophis are readily identifiable behaviours. Male approach is visually guided7'8 and courtship behaviour is mediated by tongue-flick delivery of odour molecules to the vomeronasal organs as in trail-following2'3'7'9. The male orients to and approaches the female, ...
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 510 (1987), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 474 (1986), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 332 (1988), S. 832-834 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Sexual behaviour in leopard geckos is stereotyped and differs between the sexes. The typical copulatory sequence consists of the male rapidly vibrating his tail on encountering a female. He will then approach the female, licking her tail. The male next grips and shakes the female's tail; this ...
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  • 5
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 316 (1985), S. 59-60 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] On emergence from the winter den, female red-sided garter snakes are usually courted by 10-20, but sometimes as many as 100 males simultaneously, although only one male mates with the female13. Males begin to court females when rapid tongue-flicks by the male deliver pheromone cues from the ...
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  • 6
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 359 (1992), S. 492-492 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] LOVE is the best known pheromone language, with males or females, or both, producing compounds that signal their readiness to mate. The message can be exceptionally subtle. A change in a single chemical bond can nullify an otherwise aphrodisiac odour or a particular arrangement of atoms can keep ...
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Journal of comparative physiology 166 (1990), S. 629-632 
    ISSN: 1432-1351
    Keywords: Neuroendocrine reflex ; Ovarian recrudescence ; Proximates cues
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary In the female red-sided garter snake (Thamnophis sirtalis parietalis) mating initiates a neuroendocrine reflex that has both a short-term (within hours) effect on circulating estrogen concentrations and a long-term (6–7 weeks) effect on ovarian development. The perception of mating appears at least facultative, if not obligatory, for the initiation and maintenance of vitellogenesis and hence successful reproduction.
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  • 8
    ISSN: 1432-0762
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Cnemidophorous uniparens, an all-female, parthenogenetic species of whiptail lizard (Teiidae), were housed in the laboratory under seminatural conditions in groups of four, in pairs, or as isolates. Group structure and an animal's position in the dominance hierarchy affect reproductive effort. Housed in pairs, the dominant animals exhibit a higher rate of reproduction, as measured by number of clutches and length of clutch cycle, than do their subordinate cagemates. Females housed with dihydrotestosterone-treated ovariectomized females lay more clutches than females housed with ovariectomized hormone-untreated females, those housed with intact females, or housed alone.
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  • 9
    ISSN: 1432-0762
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Female red-sided garter snakes, Thamnophis sirtalis parietalis, become unattractive to most males after mating in the field and in the laboratory. Male red-sided garter snakes vary in their latencies to court attractive females following copulation, with courtship resuming in minutes to hours. Unsuccessful males in mating balls disperse from mating pairs, but are not residually inhibited from courting attractive females. These patterns of behavior indicate that males have evolved mechanisms to maximize opportunities for copulation with several females, while females mate only once per season.
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Behavioral ecology and sociobiology 21 (1987), S. 141-147 
    ISSN: 1432-0762
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary In most vertebrates, males and females are believed to differ in terms of their investment in offspring. Dominance theory suggests that one way individuals of the sex with lower parental investment can increase reproductive success would be to dominate others of the same sex. The dominant competitors are thought to achieve preferred access to mates, and thus, have greater reproductive success than subordinates. Reproduction in parthenogenetic Cnemidophorus uniparens normally proceeds without males, but individuals exhibit mounting behaviors in captivity that are typical of closely related Cnemidophorus species that reproduce sexually. Thus, these animals provide an unusual opportunity to study the effects of behavior on reproduction apart from copulation and fertilization. In this study relationships between dominance and reproduction were investigated in the unisexual lizard species, C. uniparens. Dominance hierarchies were rapidly established and maintained in the laboratory by agonistic encounters among individuals. The number of times an individual charged its cagemates was positively correlated with the number of clutches and eggs laid. Also, dominant animals who charged their cagemates were likely to win agonistic encounters; recipients of charges usually fled. Hierarchies based on different behaviors were not all related to reproduction. Charges as a predictor of dominance was unrelated to body length, percent increase in body length and time spent in the basking site. However, individuals with a high percent increase in body length spent more time basking. This is likely a result of the increased energy demands of growth in addition to reproduction. Physiological stress as measured by plasma corticosterone titers was unrelated to dominance. We suggest that dominance is an important factor affecting reproduction in C. uniparens.
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