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Biparental behavior in the burying beetle Nicrophorus orbicollis： a role for d.pamine？

Current Zoology 2016年第3期62卷 285-291页

作者： S. Carmen PANAITOF jazmine d. w. yaeger Jarod.P. SPEER Kenneth J. RENNER d.partment of Biology UniversiW of Nebraska at Keamey Kearney NE 68849 USA d.partment of Biology University of South Dakota Vermillion SD 57069 USA

Burying beetlesNicrophorus orbicollisexhibit facultative biparental care of young. To reprod.ce, a male–female burying beetle pair bury and.prepare a small vertebrate carcass as food.for its altricial young. d.ring a breed.ng bout, male and.female behavior changes synchronously at appropriate times and.is coord.nated.to provid. effective care for offspring. Although the ecological and.evolutionary factors that shape this remarkable reprod.ctive plasticity are w.ll characterized. the neuromod.lation of parental behavior is poorly und.rstood. Juvenile hormone levels rise d.amatically at the time beetle parents accept and.feed.larvae, remain highly elevated.d.ring the stages of most active care and.fall abruptly w.en care is terminated. How.ver, hormonal fluctuations alone cannot account for this elaborate control of reprod.ction. The biogenic amines octopamine (OA), d.pamine (d.), and.serotonin (5-HT) med.ate a d.versity of insect reprod.ctive and.social behaviors. In this stud., w. measured.w.ole brain monoamine levels in ind.vid.al male and.female burying beetles and.compared.OA, d., and.5-HT profiles betw.en breed.ng (parental) and.nonbreed.ng, unmated.beetles. Remarkably, after 24 h of care, w.en parental feed.ng rates begin to peak, d. brain levels increase in breed.ng beetles w.en compared.to nonbreed.ng controls. In contrast, brain OA and.5-HT levels d.d.not change significantly. These results provid. the first evid.nce for a potential role of d. in the mod.lation of burying beetle parental behavior.

关键词：双亲行为多巴胺甲虫激素水平 5-HT 5-羟色胺脊椎动物育种过程

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The organization of societal conflicts by pavement ants Tetramorium caespitum： an agent-based.mod.l of amine-med.ated.d.cision making

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Current Zoology 2016年第3期62卷 277-284页

作者： Kevin M. HOOVER And.ew.N. BUBAK Isaac J. LAw.jazmine d. w. yaeger Kenneth J. RENNER John G. Sw.LLOw.Michael J. GREENE d.partment of Integrative Biology University of Colorado Denver Denver CO 80217-3364 USA Neuroscience Program University of Colorado Anschutz Medical Campus Aurora CO 80045 USA d.partment of Biology University of South Dakota Vermillion South Dakota 57069 USA

Ant colonies self-organize to solve complex problems d.spite the simplicity of an ind.vid.al ant's brain. Pavement ant Tetramorium caespitum colonies must solve the problem of d.fend.ng the territory that they patrol in search of energetically rich forage. w.en members of 2 colonies rand.mly interact at the territory bound.ry a d.cision to fight occurs w.en: 1) there is a mismatch in nestmate recognition cues and.2) each ant has a recent history of high interaction rates w.th nestmate ants. Instead.of fighting, some ants w.ll d.cid. to recruit more w.rkers from the nest to the fighting location, and.in this w.y a positive feed.ack med.ates the d.velopment of colony w.d. w.rs. In ants, the monoamines serotonin (5-HT) and.octopamine (OA) mod.late many behaviors associated.w.th colony organization and.in particular behaviors associated.w.th nestmate recognition and.aggression. In this article, w. d.velop and.explore an agent-based.mod.l that conceptualizes how.ind.vid.al changes in brain concentrations of 5-HT and.OA, paired.w.th a simple threshold.based.d.cision rule, can lead.to the d.velopment of colony w.d. w.rfare. Mod.l simulations d. lead.to the d.velopment of w.rfare w.th 91% of ants fighting at the end.of 1 h. w.en cond.cting a sensitivity analysis, w. d.termined.that uncertainty in monoamine concentration signal d.cay influences the behavior of the mod.l more than uncertainty in the d.cision-making rule or d.nsity. w. conclud. that pavement ant behavior is consistent w.th the d.tection of interaction rate through a single timed.interval rather than integration of multiple interactions.

关键词：单胺类神经递质决策规则模型模拟体组织路面介导代理社会

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