Aromatase inhibition reduces specifically one display of the ring dove courtship behavior.

abstract：:Relaxin 3 (RLN3) is a newly-discovered member of the insulin superfamily. We isolated three RLN3-like cDNAs from the brain of the Japanese eel (Anguilla japonica). The deduced amino acid sequences of the RLN3-like cDNAs contained the two-chain structure common to relaxin including a RXXXRXXI/V motif in the B-chain. Ph...

journal_title：General and comparative endocrinology

authors： Hu GB,Kusakabe M,Takei Y

更新日期：2011-07-01 00:00:00

abstract：:The peroxidase-antiperoxidase (PAP) immunocytochemical technique and rabbit antihuman prolactin (PRL) antiserum were used to localize and identify PRL-producing cells in the pars distalis of Bufo calamita, Hyla meridionalis, Alytes cisternasii, Pelobates cultripes, and Rana perezi tadpoles at different stages of devel...

journal_title：General and comparative endocrinology

authors： Garcia-Navarro S,Malagon MM,Garcia-Herdugo G,Gracia-Navarro F

更新日期：1988-02-01 00:00:00

abstract：:We investigated the seasonal and daily variation in plasma glucose levels in response to stress in captive wild starlings. Starlings were captured from the wild during the winter, held on short days (11L:13D, mimicking winter), and then shifted to long days (19L:5D, mimicking summer). Birds were maintained on long day...

journal_title：General and comparative endocrinology

authors： Remage-Healey L,Romero LM

更新日期：2000-07-01 00:00:00

abstract：:Normal saline, L-thyroxine (L-T4, 0.5 micrograms/bird/day), and testosterone (100 micrograms/bird/day) were administered separately to intact, thyroidectomized, and castrated spotted munia over a 30-day period and the effects on basal metabolic rate (BMR), gonads, and body weight were recorded. Thyroidectomy and castr...

journal_title：General and comparative endocrinology

authors： Gupta BB,Thapliyal JP

更新日期：1984-10-01 00:00:00

abstract：:Over the last decade, field endocrinologists have explored the efficacy of using plasma corticosterone concentrations of breeding seabirds as an indicator of food availability and predictor of breeding success. However, studies have been predominately confined to adults and the results have been inconsistent. We exami...

journal_title：General and comparative endocrinology

authors： Brewer JH,O'Reilly KM,Dean Kildaw S,Loren Buck C

更新日期：2008-04-01 00:00:00

abstract：:Animals in captivity and in the wild face numerous challenges, including the risk of enduring acute or chronic stress. In captivity, facilities attempt to alleviate the risk of chronic stress by providing environmental enrichment, shown to minimize behavioral disorders and stress in several species. One potential form...

journal_title：General and comparative endocrinology

authors： Majchrzak YN,Mastromonaco GF,Korver W,Burness G

更新日期：2015-01-15 00:00:00

abstract：:The initiation of sexual maturation and spermatogenesis are complex processes that require the highly coordinated regulation of a number of key genes. The endocrine system plays crucial roles in these processes, but the precise mechanisms involved in sexual maturation of fish are poorly understood. We investigated the...

journal_title：General and comparative endocrinology

authors： Maugars G,Schmitz M

更新日期：2008-11-01 00:00:00

abstract：:Tardigrades are a key group for understanding the evolution of the Ecdysozoa, a large clade of molting animals that also includes arthropods and nematodes. However, little is known about most aspects of their basic biology. Neuropeptide and peptide hormone signaling has been extensively studied in arthropods and nemat...

journal_title：General and comparative endocrinology

authors： Koziol U

更新日期：2018-10-01 00:00:00

abstract：:Recently, we reported the cloning of a cDNA fragment from Fundulus heteroclitus liver encoding the open reading frame of type 2 deiodinase (FhD2). We here report the cloning of 14 kb of genomic sequence from F. heteroclitus that includes the previously reported coding region of the F. heteroclitus Dio2 gene (FhDio2), ...

journal_title：General and comparative endocrinology

authors： Orozco A,Jeziorski MC,Linser PJ,Greenberg RM,Valverde-R C

更新日期：2002-09-01 00:00:00

abstract：:The role of ovarian hormones in the expression of parental behavior and in the regulation of LH secretion was investigated in incubating commercial meat-type hens. After ovariectomy, incubating hens continued to incubate eggs normally and brooded day-old chicks given to replace eggs, in a manner similar to sham-ovarie...

journal_title：General and comparative endocrinology

authors： Lea RW,Richard-Yris MA,Sharp PJ

更新日期：1996-01-01 00:00:00

abstract：:The rainbow trout (Oncorhynchus mykiss) ovarian gonadotropin (GTH II) receptor was solubilized by extraction with the nonionic detergent 1% Triton X-100 in the presence of 20% glycerol. The hormone-binding characteristics of the soluble receptors were similar to those of membrane-bound receptors: the Scatchard plot of...

journal_title：General and comparative endocrinology

authors： Quesnel H,Breton B

更新日期：1993-09-01 00:00:00

abstract：:Calcitonin gene-related peptide (CGRP) was found using radioimmunoassay in the brain and spinal cord of the bullfrog, Rana catesbeiana. The brain extracts were found to contain 241.7 +/- 68.1 pg/mg tissue, and the spinal cord contained 1753.0 +/- 96.8 pg/mg tissue. An intense immunocytochemical reaction was observed i...

journal_title：General and comparative endocrinology

authors： Kline LW,Kaneko T,Chiu KW,Harvey S,Pang PK

更新日期：1988-10-01 00:00:00

abstract：:To investigate whether a differential potency on vitellogenesis exists between the carp gonadotropin (cGTH) and fraction I-cGTH (proteins from cGTH unbound on concanavalin A-Sepharose, which represent 5% of cGTH in weight), hypophysectomized Gobius niger were treated with the two hormonal preparations at the same leve...

journal_title：General and comparative endocrinology

authors： Le Menn F,Burzawa-Gérard E

更新日期：1985-01-01 00:00:00

abstract：:The four-spine sculpin Cottus kazika is a euryhaline teleost, in which faster growth in seawater (SW) and freshwater (FW) has been reported. In this study, cDNA clones encoding growth hormone (GH) and insulin-like growth factor I (IGF-I) were isolated from this species to examine the involvement of the GH/IGF-I axis i...

journal_title：General and comparative endocrinology

authors： Inoue K,Iwatani H,Takei Y

更新日期：2003-03-01 00:00:00

abstract：:The rate-limiting and regulated step in steroidogenesis, the conversion of cholesterol to pregnenolone, is facilitated by the steroidogenic acute regulatory protein (StAR) and cytochrome P450 cholesterol side-chain cleavage (P450scc). We have isolated cDNAs encoding StAR and P450scc from the Atlantic stingray, Dasyati...

journal_title：General and comparative endocrinology

authors： Evans AN,Nunez BS

更新日期：2010-08-01 00:00:00

abstract：:Glucocorticoid hormones (GCs) are central mediators of metabolism and the response to challenges. Because circulating GC levels increase in response to challenges, within-population variation in GCs could reflect among-individual variation in condition or experience. At the same time, individual variation in GC regula...

journal_title：General and comparative endocrinology

authors： Schoenle LA,Zimmer C,Miller ET,Vitousek MN

更新日期：2021-01-01 00:00:00

abstract：:The conversion in vitro of cholesterol (Ch) to nonpolar metabolites and ecdysteroids was studied in Y-organs of the xanthid crab, Menippe mercenaria. In one set of experiments, Y-organs were prelabeled in vivo by injecting crabs with 100 microCi of [3H]Ch, and halved glands were then incubated for 24 and 48 hr in the ...

journal_title：General and comparative endocrinology

authors： Rudolph PH,Spaziani E

更新日期：1992-11-01 00:00:00

abstract：:The larval ring gland and adult corpus allatum (CA) of Drosophila melanogaster produce at least three sesquiterpenoid products: methyl farnesoate (MF), juvenile hormone III (JHIII), and JHIII bisepoxide (JHB(3)). Our understanding of neuropeptide regulation of sesquiterpenoid biosynthesis in D. melanogaster has been h...

journal_title：General and comparative endocrinology

authors： Wang C,Zhang J,Tobe SS,Bendena WG

更新日期：2012-05-01 00:00:00

abstract：:The hybrids of carp (Cyprinus carpio) and goldfish (Carassius auratus) collected from the lower Great Lakes between 1978 and 1981 exhibited epizootics of gonadal neoplasm which were rare in the parental species. The pituitary glands of hybrids were, on average, 2.5 times larger than that of carp of similar body size. ...

journal_title：General and comparative endocrinology

authors： Down NE,Peter RE,Leatherland JF

更新日期：1988-02-01 00:00:00

abstract：:Effects of epidermal growth factor (EGF) and possible mechanisms of EGF-mediated signal transduction were investigated in isolated cells of the digestive gland of the mussel (Mytilus galloprovincialis Lam. ). EGF induced a cytosolic Ca2+ transient and subsequently stimulated DNA synthesis; both effects were dose-depen...

journal_title：General and comparative endocrinology

authors： Canesi L,Ciacci C,Orunesu M,Gallo G

更新日期：1997-08-01 00:00:00

abstract：:Ecdysteroids play an essential role in the regulation of the molting processes of arthropods. Nuclear receptors of the spider Agelena silvatica that showed high homology with other arthropods especially in the functional domains were identified, two isoforms of ecdysone receptor (AsEcRA, AsEcRB), retinoid X receptor (...

journal_title：General and comparative endocrinology

authors： Honda Y,Ishiguro W,Ogihara MH,Kataoka H,Taylor D

更新日期：2017-06-01 00:00:00

abstract：:Species differences in the effect of male gonadal androgens on male growth are considered a possible mechanism allowing shifts in magnitude and even direction of sexual size dimorphism (SSD) in squamate reptiles. According to the bipotential growth regulation hypothesis, the androgen testosterone (T) enhances male gro...

journal_title：General and comparative endocrinology

authors： Kubička L,Golinski A,John-Alder H,Kratochvíl L

更新日期：2013-07-01 00:00:00

abstract：:The neuroendocrine light green cells (LGCs) control body growth and metabolism of the freshwater snail, Lymnaea stagnalis. These cells, located in the cerebral ganglia, use the peripheries of the median lip nerves (MLNs) as the neurohemal area. The LGCs express four members of a gene family encoding the precursors of ...

journal_title：General and comparative endocrinology

authors： Li KW,Geraerts WP,van Loenhout H,Joosse J

更新日期：1992-07-01 00:00:00

abstract：:The insulin/PI3K/Akt signaling pathway is strongly involved in the differentiation of C2C12 cells, as has been demonstrated by the addition of IGFs and insulin to culture media. In this study, we have characterized the role of insulin in chick myoblast proliferation and differentiation in vitro and in vivo, and have r...

journal_title：General and comparative endocrinology

authors： Sato K,Aoki M,Kondo R,Matsushita K,Akiba Y,Kamada T

更新日期：2012-02-01 00:00:00

abstract：:An enzyme-linked immunosorbent assay (ELISA) has been developed for a conjugated bile acid, 7alpha,12alpha,24-trihydroxy-5alpha-cholan-3-one 24-sulfate (commonly referred to as 3-keto petromyzonol sulfate [3kPZS]), a pheromone released by reproductively mature male sea lampreys to attract sexually mature females. A po...

journal_title：General and comparative endocrinology

authors： Yun SS,Scott AP,Siefkes MJ,Li W

更新日期：2002-12-01 00:00:00

abstract：:Serum cortisol levels were measured in a total of 73 tammar wallabies maintained in a captive population at Macquarie University, NSW, Australia. Previous studies of corticosteroids in marsupials have generally involved low sample numbers, a diverse array of analytical techniques, and a variety of sampling conditions....

journal_title：General and comparative endocrinology

authors： McKenzie S,Deane EM

更新日期：2003-10-01 00:00:00

abstract：:The effects of a long term partial food restriction were studied in chickens and rats. In chickens the treatment resulted in increased plasma T4 levels while T4 levels in rats remained unchanged. Plasma T3 decreased in both species. In vitro hepatic outer ring deiodinating type I (ORD-I) activity was not influenced by...

journal_title：General and comparative endocrinology

authors： Darras VM,Cokelaere M,Dewil E,Arnouts S,Decuypere E,Kühn ER

更新日期：1995-12-01 00:00:00

abstract：:The reproductive biology of the Indian major carp Cirrhinus mrigala is tightly synchronized with the seasonal changes in the environment. While the ovaries show growth from February through June, the fish spawn in July-August to coincide with the monsoon; thereafter the fish pass into the postspawning and resting phas...

journal_title：General and comparative endocrinology

authors： Biju KC,Singru PS,Schreibman MP,Subhedar N

更新日期：2003-10-01 00:00:00

abstract：:Insect kinins modulate aspects of diuresis, digestion, development, and sugar taste perception in tarsi and labellar sensilla in mosquitoes. They are, however, subject to rapid biological degradation by endogenous invertebrate peptidases. A series of α-aminoisobutyric (Aib) acid-containing insect kinin analogs incorpo...

journal_title：General and comparative endocrinology

authors： Xiong C,Kaczmarek K,Zabrocki J,Pietrantonio PV,Nachman RJ

更新日期：2019-07-01 00:00:00

abstract：:Avian reproduction entails complex endocrine interactions at the hypothalamic and ovarian levels. The initiation of the reproductive season is due to the reduction in melatonin and GnIH production as day length increases. The decline in GnIH permits GnRH and gonadotropin secretion starting follicle growth. Follicular ...

journal_title：General and comparative endocrinology

authors： Rangel PL,Gutierrez CG

更新日期：2014-07-01 00:00:00