Abstract：
:Nazca boobies (Sula granti) show unconditional obligate siblicide immediately after hatching, reducing the typical two-egg clutch size to one. We studied body mass changes and levels of testosterone (T), corticosterone (CORT), and progesterone (P) for A-chicks (dominant, first hatched), B-chicks (subordinate, second hatched), and singletons, during the first 7 days after hatching, when siblicide normally occurs. Mass increase with age was higher for A-chicks than for singletons and B-chicks. This exaggerated the existing developmental advantage of A- over B-chicks that is due to hatching asynchrony. In nests with two chicks, CORT titer was significantly higher in B-chicks than in A-chicks. During ontogenetic development, CORT decreased with age for A-chicks, but did not change for singletons. P showed qualitatively similar ontogenetic changes to CORT, remaining unchanged for A-chicks but increasing for singletons. Thus, both CORT and P levels were lower for A-chicks than for singletons, and both hormones varied inversely with body mass. Overall, T levels did not differ between different categories of chicks. However, one B-chick in the process of reversing the dominance relationship with its older, but weakened, sibling had significantly elevated T. We suggest that CORT and P are regulated to promote exaggerated mass gain in socially challenged A-chicks, facilitating siblicide. Whether T induces aggressiveness during short time intervals of intense sibling rivalry needs further attention.
journal_name
Horm Behavjournal_title
Hormones and behaviorauthors
Tarlow EM,Wikelski M,Anderson DJdoi
10.1006/hbeh.2001.1661keywords:
subject
Has Abstractpub_date
2001-08-01 00:00:00pages
14-20issue
1eissn
0018-506Xissn
1095-6867pii
S0018-506X(01)91661-7journal_volume
40pub_type
杂志文章abstract：:The vertebrate hippocampus (HP) plays a critical role in the organization of memory. Estrogens alter synaptic morphology and function in the mammalian HP and may potentiate memory performance. Previous studies suggest that the songbird HP itself is a site of significant aromatase expression, intimating that local estr...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.1998.1447
更新日期：1998-10-01 00:00:00
abstract：:A spawning pheromone in the milt (semen) and testes of the Pacific herring, Clupea harengus pallasi, is thought to facilitate school spawning of this species. We found that responsiveness to the spawning pheromone was variable among ripe fish (milt-producing or ovulated). Measurement of five principle reproductive ste...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.1997.1379
更新日期：1997-06-01 00:00:00
abstract：:Attractivity is one aspect of female sexuality relevant for the understanding of male-female sexual interactions. In a previous study, it was shown that intact males were equally attracted to early androgenized, gonadally intact females as to normally developed, estrous females. The present study was designed to inves...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/0018-506x(86)90001-2
更新日期：1986-12-01 00:00:00
abstract：:Previous studies have found a clear relationship between prolactin (prl) and paternal care in various vertebrate taxa. In New World monkeys, it has been demonstrated in several species that fathers have high prolactin levels even during periods without infant rearing. In this study, we followed the reproductive career...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2004.04.010
更新日期：2004-12-01 00:00:00
abstract：:Japanese quail selected bidirectionally for adult mating frequency were utilized to study in vivo aromatization of testosterone (T) in relation to masculine copulatory behavior. Functionally castrated high (HM) and low mating (LM) line quail were injected with 75 microCi of [3H]T. One hour after the injection, all rad...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/0018-506x(83)90031-4
更新日期：1983-09-01 00:00:00
abstract：:Corticotropin-releasing factor (CRF) plays a critical role in the mediation of physiological and behavioral responses to stressors. In the present study, we investigated the role played by the CRF system within the medial amygdala (MeA) in the modulation of anxiety and fear-related responses. Male Wistar rats were bil...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2014.01.004
更新日期：2014-03-01 00:00:00
abstract：:Rodent alarm chemosignals elicit various behavioral and physiological responses in conspecifics. This study employed a bioassay method, using a modification of the forced swim test, to demonstrate that the pituitary mediates production and/or secretion of an alarm chemosignal in rats subjected to stress. This was show...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.1994.1011
更新日期：1994-06-01 00:00:00
abstract：:Social stressors such as depressed maternal care and family conflict are robust challenges which can have long-term physiological and behavioral effects on offspring and future generations. The current study investigates the transgenerational effects of an ethologically relevant chronic social stress on the behavior a...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2014.03.005
更新日期：2014-04-01 00:00:00
abstract：:We studied the role of progesterone receptor (PR) in the display of female sexual behavior during postpartum estrus in rats. Adult female rats were treated with the PR antagonist, RU486 (1.25 and 5 mg), 3 h after parturition and sexual behavior was evaluated throughout the first postpartum day. Estradiol and progester...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2010.10.008
更新日期：2011-01-01 00:00:00
abstract：:In rodents, parts of the arginine-vasopressin (AVP) neuronal system are sexually dimorphic with males having more AVP-immunoreactive cells/fibers than females. This neuropeptide neuronal system is highly sensitive to steroids and has been proposed to play an important role in the processing of olfactory cues critical ...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2008.02.001
更新日期：2008-06-01 00:00:00
abstract：:The neuropeptide arginine vasotocin (AVT) influences vocalizations in some anuran amphibians but it is unknown whether AVT alters all vocal behaviors of a species similarly. We first characterized the vocal repertoire of male gray treefrogs (Hyla versicolor). Three different call types were distinguished by unique set...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.1999.1540
更新日期：1999-10-01 00:00:00
abstract：:Motivated social behaviors such as mating are controlled by a complex network of limbic nuclei. Concepts of network organization derived from computational neuroscience may aid our understanding of the links between the neuroanatomical circuitry and what is represented by the anatomy. Research in my laboratory uses ma...
journal_title：Hormones and behavior
pub_type： 杂志文章,评审
doi：10.1006/hbeh.1997.1403
更新日期：1997-08-01 00:00:00
abstract：INTRODUCTION:Anger is a state of emotions ranging from irritation to intense rage. Aggression implies externalizing anger through destructive/punitive behaviour. The World Professional Association for Transgender Health (WPATH) Standards of Care, Edition 7 (SOC7) guidelines warn about aggression in transgender men (TM)...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2019.02.016
更新日期：2019-04-01 00:00:00
abstract：:The anxiety- and stress-related neuropeptide corticotropin-releasing factor (CRF) elicits behavioral changes in vertebrates including increases in behavioral arousal and locomotor activity. Intracerebroventricular injections of CRF in an amphibian, the roughskin newt (Taricha granulosa), induces rapid increases in loc...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2009.04.006
更新日期：2009-06-01 00:00:00
abstract：:Previous experiments demonstrate that lesions of the septum produce opposite effects on intraspecific male aggression in the territorial field sparrow (Spizella pusilla) and the colonial zebra finch (Taeniopygia guttata; facilitate vs inhibit, respectively) and intraseptal infusions of arginine vasotocin (AVT) and vas...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.1998.1467
更新日期：1998-08-01 00:00:00
abstract：:In previous studies, we showed for the first time that prenatal stress in rats produces long-term alterations of formalin-induced pain behavior that are dependent on age and sex, and we demonstrated an important role of the serotonergic system in mechanisms of prenatal stress (Butkevich, I.P. and Vershinina, E.A., 200...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2008.09.008
更新日期：2009-01-01 00:00:00
abstract：:There is growing evidence from preclinical studies for an involvement of orexins (ORX) in the regulation of stress, affectivity and addictive behavior. The aim of our study was to gather corresponding clinical data and to elucidate the relationships between alcohol withdrawal stress, ORX plasma concentration and psych...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2011.08.017
更新日期：2011-11-01 00:00:00
abstract：:The present study was carried out in order to assess the time course of action of progesterone (P) in the facilitation of complete feminine sexual behavior. Female rats (estrogen primed via 5% E2 Silastic capsules) were given 200 micrograms of P either intravenously (iv) or subcutaneously (sc), and tested for estrous ...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/0018-506x(83)90012-0
更新日期：1983-03-01 00:00:00
abstract：:In most male birds that exhibit paternal care, extending the spring testosterone (T) peak throughout the breeding season reduces nestling provisioning. However, in some species, this trade-off between high T and expression of paternal care is absent. For example, during some or all of the nestling period, T did not af...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2004.10.004
更新日期：2005-02-01 00:00:00
abstract：:Oxytocin and vasopressin are known to be important in affiliative behaviors. Although these peptides have been shown to be involved in monogamous pairing behavior in a few mammalian species, their role across monogamous species is not well understood. In particular, monogamy is most common in birds, yet the role of me...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2012.05.009
更新日期：2012-07-01 00:00:00
abstract：:One brain region that has been implicated in the regulation of lordosis is the medial preoptic-anterior hypothalamic continuum (MPOA-AH). Previous studies have suggested that this zone may be part of the circuit mediating the effects of serotonin (5-HT) on sexual receptivity. In the present experiments, we investigate...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.2002.1803
更新日期：2002-08-01 00:00:00
abstract：:A contribution to a special issue on Hormones and Human Competition. A stress perspective is used to illuminate how competitive defeat and victory shape biology and behavior. We report a field study examining how change in cortisol following perceived defeat (vs. victory) in a competition-in this case, a dog agility c...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2016.12.005
更新日期：2017-06-01 00:00:00
abstract：:Most work investigating modulation of testosterone (T) levels in birds has focused on northern temperate and Arctic species, and to a lesser degree, tropical species. Studies exploring modulation of T in birds in temperate regions of the Southern Hemisphere are lacking. Here we explore patterns of T secretion across t...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2011.05.002
更新日期：2011-07-01 00:00:00
abstract：:This work tested the hypothesis that gonadal steroid receptor activation was necessary for the restoration of several sociosexual behaviors (such as copulatory behavior, partner preference, 50-kHz vocalizations, and scent marking) in testosterone-treated gonadectomized male rats. Gonadal steroid receptors were blocked...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.1998.1445
更新日期：1998-06-01 00:00:00
abstract：:Systemic administration of ovine prolactin (PRL) has been previously reported to stimulate parental feeding behavior toward 7-day-old foster squabs by nonbreeding ring doves with previous breeding experience. The first of the present experiments reexamined this claim in experienced, nonbreeding birds given test squabs...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/0018-506x(91)90012-7
更新日期：1991-09-01 00:00:00
abstract：:Social competence - the ability of animals to dynamically adjust their social behavior dependent on the current social context - is fundamental to the successful establishment and maintenance of social relationships in group-living species. The social opportunity paradigm, where animals rapidly ascend a social hierarc...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2016.11.001
更新日期：2017-01-01 00:00:00
abstract：:Fecal testosterone and cortisol levels were analyzed from six wild male muriquis (Brachyteles arachnoides) over a 19-month period at the Estação Biológica de Caratinga in Minas Gerais, Brazil, to investigate the hormonal correlates of seasonal sexual behavior and environmental conditions. Group mean testosterone level...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1006/hbeh.1998.1505
更新日期：1999-04-01 00:00:00
abstract：:Interspecific differences in the neuropeptide systems of the lateral septum (LS) often parallel differences in social behavior. In rodents, some closely related species that differ in aggressive behavior also differ according to the level of vasopressin (VP) innervation of the LS. In songbirds, the neuropeptides vasot...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2005.03.004
更新日期：2005-08-01 00:00:00
abstract：:This article is part of a Special Issue "Energy Balance". Energy homeostasis is achieved through neuroendocrine and metabolic control of energy intake, storage, and expenditure. Traditionally, these controls have been studied in an unrealistic and narrow context. The appetite for food, for example, is most often assum...
journal_title：Hormones and behavior
pub_type： 社论
doi：10.1016/j.yhbeh.2014.05.001
更新日期：2014-06-01 00:00:00
abstract：:In ovariectomized (OVX) Sprague-Dawley rats, estradiol benzoate (EB) has been reported to decrease rapid eye movement (REM) and non-REM (NREM) sleep during the dark phase for up to 3 days. It is unknown, however, if estrogenic effects on sleep extend beyond 3 days or if other estrogens could induce the same changes. F...
journal_title：Hormones and behavior
pub_type： 杂志文章
doi：10.1016/j.yhbeh.2007.09.018
更新日期：2008-01-01 00:00:00
