Changes in social behavior of the male golden hamster accompanying photoperiodic changes in reproduction

Garrett, John W.; Campbell, Constance S.

doi:10.1016/0018-506x(80)90020-3

Cited by 71 publications

(35 citation statements)

References 30 publications

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“…The effects of photoperiod on aggressive behavior were first described in species that exhibit reproductive suppression in short days (Garrett and Campbell, 1980;Jasnow et al, 2000). Our observations in P. californicus, a species that does not exhibit reproductive inhibition in short days, suggest that these findings may be applicable to a wider array of species, including humans.…”

Section: Discussionsupporting

confidence: 58%

“…In Syrian hamsters (Mesocricetus auratus) (Garrett and Campbell, 1980;Jasnow et al, 2002;Caldwell and Albers, 2004), Siberian hamsters (Phodopus sungorus) (Jasnow et al, 2000;Demas et al, 2004;Wen et al, 2004), beach mice (Peromyscus polionotus) (Trainor et al, 2007a), and deer mice (Peromyscus maniculatus) (Trainor et al, 2007b), males are more aggressive in a resident-intruder test when tested in short days (8L: 16D) as opposed to long days (16L:8D). This effect has been considered paradoxical, because in each of these species housing in short days causes regression of testes and a corresponding decrease in testosterone (Jasnow et al, 2000(Jasnow et al, , 2002Trainor et al, 2006c).…”

Section: Introductionmentioning

confidence: 99%

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Rapid effects of estradiol on male aggression depend on photoperiod in reproductively non-responsive mice

Trainor

Finy

Nelson

2008

Hormones and Behavior

110

105

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In three genuses and four species of rodents, housing in winter-like short days (8L:16D) increases male aggressive behavior. In all of these species, males undergo short-day induced regression of the reproductive system. Some studies, however, suggest that the effect of photoperiod on aggression may be independent of reproductive responses. We examined the effects of photoperiod on aggressive behavior in California mice (Peromyscus californicus), which do not display reproductive responsiveness to short days. As expected, short days had no effect on plasma testosterone. Estrogen receptor alpha and estrogen receptor beta immunostaining did not differ in the lateral septum, medial preoptic area, bed nucleus of the stria terminalis, or medial amygdala. However, males housed in short days were significantly more aggressive than males housed in long days. Similar to previous work in beach mice (Peromyscus polionotus), estradiol rapidly increased aggression when male California mice were housed in short days but not when housed in long days. These data suggest that the effects of photoperiod on aggression and estrogen signaling are independent of reproductive responses. The rapid action of estradiol on aggression in short-day mice also suggests that nongenomic mechanisms mediate the effects of estrogens in short days.

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Section: Discussionsupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Rapid effects of estradiol on male aggression depend on photoperiod in reproductively non-responsive mice

Trainor

Finy

Nelson

2008

Hormones and Behavior

110

105

View full text Add to dashboard Cite

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“…Similar to the relatively high levels of aggression in prepubertal males compared to adults, adult males housed in winterlike short photoperiods exhibit higher levels of aggression than photostimulated adults (Garret & Campbell, 1980;Jasnow, Huhman, Bartness, & Demas, 2002). Whether testosterone is capable of modulating aggression in adult male Syrian hamsters housed under short day lengths has not been reported.…”

Section: Discussionmentioning

confidence: 99%

Testosterone, puberty, and the pattern of male aggression in Syrian hamsters

Romeo

Schulz

Nelson

et al. 2003

Developmental Psychobiology

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The interaction between testosterone and pubertal development on aggression in the male Syrian hamster (Mesocricetus auratus) was examined in two experiments. First, gonad-intact prepubertal and adult male hamsters were tested for aggression using the resident-intruder paradigm with an age-and weightmatched intruder. Prepubertal males engaged in a greater number of attacks and had longer attack durations than adults. In the second experiment, prepubertal and adult males were castrated and treated with either a 0-, 2.5-, or 5-mg pellet of testosterone, and their aggression was assessed using the resident-intruder paradigm. Prepubertal males again showed shorter attack latencies and greater attack durations compared to adult males across all levels of testosterone. Testosterone treatment did not significantly affect these behaviors before or after pubertal development. We conclude that (a) pubertal development is associated with a decline in aggression in the male Syrian hamster, and (b) a developmental shift in behavioral sensitivity or responsiveness to testosterone does not underlie the pubertal decrease in aggression. ß

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“…Both male and female hamsters have been shown to reliably engage in intense agonistic behavior during same-sex encounters (Payne and Swanson, 1970;Takahashi and Lisk, 1983). Fighting in both sexes is affected by numerous factors, including (a) the hormonal status of the subject (Meisel, Sterner, and Diekman, 1988;Payne and Swanson, 1971a;Payne and Swanson, 1971b;Payne and Swanson, 1971c;Takahashi, 1990;Vandenbergh, 1971), (b) the hormonal status of the opponent (Kislak and Beach, 1955;Marques and Valenstein, 1977;Payne, 1974), (c) changes in photoperiod (Garrett and Campbell, 1980;Jasnow, Huhman, Bartness, and Demas, 2002;Landau, 1975), (d) prior housing conditions (Payne, 1973;Wise, 1974), and (e) the size and complexity of the testing environment (Johnston, 1975a;Johnston, 1975b;Payne, 1973;Payne and Swanson, 1970). A single intra-sexual agonistic bout progresses through a well defined and restricted set of stereotyped behaviors, including investigation, offensive and defensive posturing, and actual fighting, during which the two individuals are oriented at right angles to one another and attempting to bite one another, a "rolling fight" (Floody and Pfaff, 1977).…”

Section: Introductionmentioning

confidence: 99%

Dominant–subordinate relationships in hamsters: Sex differences in reactions to familiar opponents

Bath

Johnston

2007

Hormones and Behavior

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In the majority of mammalian species, males are dominant over and more aggressive than females. In contrast, some reports suggest that female golden hamsters are more aggressive than males but systematic comparisons using the same methods for both sexes are rare. We observed same-sexed pairs of hamsters over repeated trials to assess whether sex differences existed in the level of agonistic behavior and in the development and maintenance of dominant-subordinate relationships with familiar partners. There were no sex differences in measures of agonistic behavior or fear responses (fleeing) during the initial series of three trials on the first day of testing. Following a four-day interval, males that had lost in session 1 showed fearful responses to a familiar dominant male and were not likely to engage in a fight with him. In contrast, females that lost the initial fights were not fearful and fought vigorously with the familiar winner in subsequent encounters. Although the amount of agonistic behavior engaged in by females did decrease over the course of the three sessions, females that lost did not demonstrate an increase in fear, as measured by the latency to flee. Males that lost fights did show increased fear during later trials and sessions. These results suggest that female hamsters are less affected by losing fights than males are and thus that females are less likely than males to develop highly polarized dominant-subordinate relationships. Further work is needed to understand the mechanisms underlying these sex differences.

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Changes in social behavior of the male golden hamster accompanying photoperiodic changes in reproduction

Cited by 71 publications

References 30 publications

Rapid effects of estradiol on male aggression depend on photoperiod in reproductively non-responsive mice

Rapid effects of estradiol on male aggression depend on photoperiod in reproductively non-responsive mice

Testosterone, puberty, and the pattern of male aggression in Syrian hamsters

Dominant–subordinate relationships in hamsters: Sex differences in reactions to familiar opponents

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