Post-fight levels of plasma lactate and corticosterone in male copperheads, Agkistrodon contortrix (Serpentes, Viperidae): differences between winners and losers

@article{Schuett2000PostfightLO,
  title={Post-fight levels of plasma lactate and corticosterone in male copperheads, Agkistrodon contortrix (Serpentes, Viperidae): differences between winners and losers},
  author={Gordon W. Schuett and Matthew S. Grober},
  journal={Physiology \& Behavior},
  year={2000},
  volume={71},
  pages={335-341}
}
During the mating seasons (late summer and spring), male copperheads (Agkistrodon contortrix; Serpentes, Viperidae) engage in aggressive physical interactions for priority of access to females. These fights generally involve two individuals and are characterized by prominent vertical displays, a high degree of physical contact, and the absence of biting. Ritualized aggression does not occur in females. Although intrasexual aggression in conspecifics has obvious energetic costs (e.g., lactate… 
Social interactions tune aggression and stress responsiveness in a territorial cichlid fish (Archocentrus nigrofasciatus)
TLDR
A variety of factors that could disrupt the ability of isolates to appropriately modulate interactions between social behavior and the HPI axis are discussed, and a number of functional hypotheses underlying the sensitivity of group-housed losers to changes in contest dynamics are examined.
Reproduction in Female Copperhead Snakes (Agkistrodon contortrix): Plasma Steroid Profiles during Gestation and Post-Birth Periods
TLDR
It is suggested that elevation of CORT at birth is involved in the mobilization and regulation of energy stores necessary for the physiological process of parturition and as a possible mechanism to trigger birth.
Adrenocortical Effects of Human Encounters on Free-Ranging Cottonmouths (Agkistrodon piscivorus)
TLDR
The lack of a strong stress response to low-level disturbance indicates that Cottonmouths possess a seemingly adaptive mechanism of not being overly alarmed by the mere presence of a potential predator, suggesting that the occasional foot-path encounters humans commonly have with snakes may not be stressful for some snake species.
Mechanisms and consequences of sexual conflict in garter snakes (Thamnophis sirtalis, Colubridae)
Red-sided garter snakes (Thamnophis sirtalis parietalis) court and mate in early spring around large communal overwintering dens in central Manitoba. Emerging females are immediately covered by
The glucocorticoid stress response in Magellanic Penguins (Spheniscus magellanicus): comparing within and between breeding seasons, by age and colony, after fighting, and with other penguin species
TLDR
Chick, juvenile, and adult penguins did not differ in baseline corticosterone levels, but juveniles had a reduced stress response, and Penguins in one season showed a stress response to capture, likely due to a recent severe weather event.
The Role of Circulating Metal Ions During Shell Fights in the Hermit Crab Pagurus bernhardus
TLDR
The present study revealed that seasonal changes in circulating levels, along with the ability of competitors to respond to them, may ultimately influence an individual’s success in aggressive interactions.
An Integrative Analysis of Reproduction and Stress in Free-Living Male Cottonmouths, Agkistrodon Piscivorus
TLDR
An integrative field study on male cottonmouths to investigate the evolution of contrasting mating patterns in North American pitvipers and resolve conflicting information about the pattern exhibited by the cottonmouth determined a unimodal late summer peak of testosterone (T) and a muted unimodals seasonal cycle of the sexual segment of the kidney (a secondary sexual characteristic).
Simulating winning in the wild — The behavioral and hormonal response of black redstarts to single and repeated territorial challenges of high and low intensity
TLDR
The data show that it is unlikely that STIs induce a losing experience, and indicate that a hormonal effect of winning an encounter may not be universal in vertebrates and may depend on the ecological or life-history context.
Hormonal Responses to Noncontact Aggression in Convict Cichlid Fish.
TLDR
It is demonstrated that animals engaged in conflict with live opponents also do not mount a significant hormonal response when clear dominance relationships are not established, and no hormonal response to unresolved contests despite high levels of aggressive behavior is found.
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 40 REFERENCES
Levels of Plasma Corticosterone and Testosterone in Male Copperheads (Agkistrodon contortrix) Following Staged Fights
TLDR
This study provides further support for the social insensitivity/challenge hypotheses and is the first to document postfight B and T levels in snakes.
Fighting dynamics of male copperheads,Agkistrodon contortrix (Serpentes, Viperidae): Stress‐induced inhibition of sexual behavior in losers
TLDR
Courtship performance of male A. contortrix was studied in the laboratory using subjects with either winning or losing experience from staged fights and it was found that prefight courtship scores were not significantly different between winners and losers.
Male-male agonistic behaviour of the copperhead, Agkistrodon contortrix
TLDR
Male-male agonistic behaviour of Agkistrodon contortrix was studied in the laboratory and larger males were always successful in defending a mate during courtship and in deposing smaller males from potential mates.
Body size and agonistic experience affect dominance and mating success in male copperheads
TLDR
The asymmetry in effects of single experiences of victory and defeat is consistent with studies on other vertebrates and supports the hypothesis that losing fights in males negatively affects behaviour directly related to their fitness.
Male morphs in tree lizards, Urosaurus ornatus , have different delayed hormonal responses to aggressive encounters
TLDR
Long-term steroid hormone responses to winning staged male–male encounters in different morphs of free-living male tree lizards, Urosaurus ornatus, were studied, finding the first endocrine difference between adult males of the two tree lizard morphs detected to date.
Proximate costs of fighting in male cichlid fish: the role of injuries and energy metabolism
TLDR
It is concluded that the difference between opponents in the proximate costs incurred during fighting is likely to underlie the making of decisions such as continuing, giving up or escalating the fight.
Sympathetic Mediation of Stress and Aggressive Competition: Plasma Catecholamines in Free-living Male Tree Lizards
Biochemical background for an analysis of cost-benefit interrelations in aggression
  • J. Haller
  • Medicine, Psychology
    Neuroscience & Biobehavioral Reviews
  • 1996
TLDR
There are evidences which show that the energetic aspects of aggressive behavior have a significant impact on the behavioral tactics and survival chances in free living animals and the possible neuroendocrinologic co-regulation of this behavior and of its energetic background.
Chronic low humidity-stress in the lizard Anolis carolinensis: Changes in diurnal corticosterone rhythms
TLDR
In lizards exposed to stimulatory temperature and photoperiod but also to low humidity (<35%) corticosterone exhibited a biphasic rhythm, with peaks at both 0900 and 1700 h, suggesting a natural condition, low humidity, may be a chronic stressor of the lizard Anolis carolinensis.
Aerobic and anaerobic metabolism of paired male lizards (Anolis carolinensis)
...
1
2
3
4
...