Interannual variability of Black-legged Kittiwake productivity is reflected in baseline plasma corticosterone.


:Seabird productivity is shaped by marine resource availability. We examined the link between seabird productivity and an indirect measure of food availability: baseline plasma corticosterone. We predicted low productivity would coincide with elevated baseline corticosterone levels in Black-legged Kittiwakes (Rissa tridactyla). During a 5-year period of declining Kittiwake productivity in Chiniak Bay, Kodiak Island, Alaska, we found increasing baseline corticosterone levels during both incubation and chick-rearing. Significantly lower baseline corticosterone levels were observed in the years with the highest Kittiwake productivity and the least productive years exhibited the greatest baseline corticosterone levels in Kittiwakes. Although we did not measure food availability, declining Kittiwake productivity was consistent with warming ocean temperatures and decreased availability of forage fishes to apex predators. Baseline corticosterone measurements may help researchers assess how Kittiwakes are responding to variations in the marine environment.


Gen Comp Endocrinol


Buck CL,O'Reilly KM,Kildaw SD




Has Abstract


2007-02-01 00:00:00














  • Time of thyroidectomy variably affects seasonality in female American tree sparrows (Spizella arborea).

    abstract::Female American tree sparrows (Spizella arborea) were injected with Na131I before, at, or after the onset of photostimulation in order to study the effect of time of thyroidectomy on three components of seasonality: thyroid-dependent photoperiodic ovarian growth, photorefractoriness, and postnuptial (prebasic) molt. T...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Wilson FE,Reinert BD

    更新日期:1999-06-01 00:00:00

  • Immunohistochemical localization of beta-endorphin-like material in the urodele and anuran amphibian tissues.

    abstract::In the present study, we have localized for the first time beta-endorphin (beta-EP)-like material in the adult and larval urodele and anuran tissues using immunohistochemical techniques. In the adult Notophthalmus viridescens and Ambystoma mexicanum, strong immunoreactivity to beta-EP antisera was observed in the regi...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Vethamany-Globus S

    更新日期:1989-08-01 00:00:00

  • Clarification of emu serum for peptide hormone assay using polyethylene glycol precipitation.

    abstract::Interference in radioimmunoassays (RIAs) was frequently encountered during endocrinological studies of the emu (Dromaius novaehollandiae). Interference was greatest when serum was cloudy or opaque. Such samples appeared seasonally, in spring and summer during the phase of fat deposition, and in the winter when females...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Van Cleeff JK,Blackberry MA,Blache D,Martin GB

    更新日期:2003-06-15 00:00:00

  • Expression of 3β-hydroxysteroid dehydrogenase (hsd3b), star and ad4bp/sf-1 during gonadal development in medaka (Oryzias latipes).

    abstract::In most vertebrates, sex steroids play a critical role in gonadal development, maturation of germ cells, and development of secondary sexual characteristics. Sex steroids are synthesized in steroid-producing cells (SPCs) in the testis known as Leydig cells, as well as in thecal and granulosa cells in the ovary. In SPC...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Nakamoto M,Fukasawa M,Tanaka S,Shimamori K,Suzuki A,Matsuda M,Kobayashi T,Nagahama Y,Shibata N

    更新日期:2012-04-01 00:00:00

  • Control of vascular smooth muscle cell growth in fowl.

    abstract::In adult domestic fowl, angiotensin (ANG) receptors are present in the vascular smooth muscles (VSM) and in the endothelium, mediating vasorelaxation via endothelium-derived relaxing factor/cGMP. ANG II-induced relaxation is minor in chicks and becomes more marked as they mature but diminishes in adult birds, whereas ...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Shimada T,Fabian M,Yan HQ,Nishimura H

    更新日期:1998-10-01 00:00:00

  • Melatonin counteracts the stimulatory effects of blinding or exposure to red light on reproduction in the skipper frog Rana cyanophlyctis.

    abstract::An earlier study reported that blinding or exposure to red light stimulates reproduction in R. cyanophlyctis. The present study investigates whether melatonin counteracted blinding- or red-light-induced ovarian stimulation. The study consisted of two experiments carried out during the prebreeding (March/April) and bre...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Joshi BN,Udaykumar K

    更新日期:2000-04-01 00:00:00

  • Induction of male-type gonadotropin secretion by implantation of 11-ketotestosterone in female goldfish.

    abstract::In goldfish, plasma gonadotropin levels increase during spawning in both males and females (GTH surge). A female-typical GTH surge induces ovulation (ovulatory surge), and a male-typical surge triggers milt production in response to sex pheromones released from ovulatory females. This study examined whether the male-t...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Kobayashi M,Furukawa K,Kim MH,Aida K

    更新日期:1997-12-01 00:00:00

  • Glucocorticoid receptor upregulation during seawater adaptation in a euryhaline teleost, the tilapia (Oreochromis mossambicus).

    abstract::Cortisol is an important seawater (SW) osmoregulatory hormone in the Mozambique tilapia (Oreochromis mossambicus), a highly euryhaline cichlid able to live in environments ranging from fresh water (FW) to salinities well in excess of full-strength seawater. Previous studies indicate that cortisol may promote SW adapta...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Dean DB,Whitlow ZW,Borski RJ

    更新日期:2003-06-01 00:00:00

  • Real-time PCR analysis of cytochrome P450 aromatase expression in zebrafish: gene specific tissue distribution, sex differences, developmental programming, and estrogen regulation.

    abstract::In teleost fish, the predominant brain form of cytochrome P450 aromatase (P450aromB) is a neural marker of estrogen effect, and an entry point for studying the role of hormonal and environmental estrogens on neurodevelopment and neuroplasticity. As part of a project using zebrafish to investigate these issues, we deve...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Sawyer SJ,Gerstner KA,Callard GV

    更新日期:2006-06-01 00:00:00

  • Identification, localization and function of a novel neuropeptide, 26RFa, and its cognate receptor, GPR103, in the avian hypothalamus.

    abstract::Several neuropeptides possessing the RFamide motif at their C-termini (designated RFamide peptides) have been characterized in the hypothalamus of a variety of vertebrates. Since the discovery of the 26-amino acid RFamide peptide (termed 26RFa) from the frog brain, 26RFa has been shown to exert orexigenic activity in ...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章,评审


    authors: Ukena K,Tachibana T,Tobari Y,Leprince J,Vaudry H,Tsutsui K

    更新日期:2013-09-01 00:00:00

  • Sex change and steroid profiles in the protandrous anemonefish Amphiprion melanopus (Pomacentridae, Teleostei).

    abstract::Plasma profiles of several gonadal steroids and cortisol were examined in a field population of the protandrous, sex-changing anemonefish Amphiprion melanopus to elucidate potential roles of these hormones in gonadal sex change. Sex change was experimentally induced in males by removal of their dominant female pair ma...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Godwin JR,Thomas P

    更新日期:1993-08-01 00:00:00

  • cDNA cloning of thyroid hormone receptor beta for the Japanese flounder.

    abstract::cDNA encoding the beta type of thyroid hormone receptor (THR) was cloned from a lambda gt10 library prepared from the whole bodies of metamorphosing flounder (Paralichthys olivaceus). The deduced amino acid sequence of the flounder THR beta (fTHR beta 1) showed higher homologies to the known THR beta s of other verteb...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Yamano K,Inui Y

    更新日期:1995-08-01 00:00:00

  • HPLC analysis of in vitro hepatic deiodination products of thyroid hormones in the rainbow trout, Oncorhynchus mykiss.

    abstract::Reverse-phase HPLC employing five different solvent systems was used to determine the 125I-labeled products formed in rainbow trout by in vitro incubation at 12 degrees of the hepatic microsome fraction with L-thyroxine (T4) labeled with 125I in the outer phenyl ring. Trout were starved for 2 weeks or fed a 2% ration....

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Sweeting RM,Eales JG

    更新日期:1992-03-01 00:00:00

  • Production of symmetrical flatfish by controlling the timing of thyroid hormone treatment in spotted halibut Verasper variegatus.

    abstract::The thyroid hormone plays an essential role in the metamorphosis in flatfish, during which external asymmetry (for example, eye relocation and pigmentation) is established. However, no information is available on the expression mechanisms of metamorphic asymmetry. Since the presence of malformed juveniles (having eith...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Tagawa M,Aritaki M

    更新日期:2005-04-01 00:00:00

  • Calcitonin gene-related peptide in the bullfrog, Rana catesbeiana: localization and vascular actions.

    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

    pub_type: 杂志文章


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

    更新日期:1988-10-01 00:00:00

  • Prolactin receptors in the male Rana esculenta.

    abstract::The binding of 125I-labeled ovine prolactin (oPRL) to membrane preparations of several tissues from the male green frog, Rana esculenta, collected during the year is reported. PRL binding to kidney fractions was generally high (range 5-45%). A maximum was observed in the month of October, whereas the lowest value was ...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: d'Istria M,Fasano S,Delrio G

    更新日期:1987-10-01 00:00:00

  • A novel thyroid stimulating hormone beta-subunit isoform in human pituitary, peripheral blood leukocytes, and thyroid.

    abstract::Thyroid stimulating hormone (TSH) is produced by the anterior pituitary and is used to regulate thyroid hormone output, which in turn controls metabolic activity. Currently, the pituitary is believed to be the only source of TSH used by the thyroid. Recent studies in mice from our laboratory have identified a TSHbeta ...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Schaefer JS,Klein JR

    更新日期:2009-07-01 00:00:00

  • Characterization of turkey and chicken ghrelin genes, and regulation of ghrelin and ghrelin receptor mRNA levels in broiler chickens.

    abstract::Ghrelin, a peptide hormone produced by the stomach in mammals, stimulates growth hormone release and food intake. Recently, ghrelin was identified and characterized in chicken proventriculus and shown to stimulate growth hormone release but inhibit feed intake. The purpose of this work was to identify and further char...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Richards MP,Poch SM,McMurtry JP

    更新日期:2006-02-01 00:00:00

  • Nature of moulting control in amphibians: effects of cortisol implants in toads Bufo bufo.

    abstract::Implantation of cortisol pellets in a dorsal lymph sac reduced the frequency with which toads replaced the strata cornea of the epidermis. Except in a few cases, however, the replaced strata cornea were not shed as in a normal moult. The mean interval between replacements of strata cornea rose from about 9-10 days in ...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Jørgensen CB

    更新日期:1988-07-01 00:00:00

  • In vitro biosynthesis of steroids, including 11-deoxycortisol and 5 alpha-pregnane-3 beta,7 alpha,17,20 beta-tetrol, by ovaries of the goldfish Carassius auratus during the stage of oocyte final maturation.

    abstract::To examine the production of steroids with potential oocyte maturation-inducing or pheromonal activity in the goldfish (Carassius auratus) we have incubated mature ovaries of this species with 17-[3H]hydroxyprogesterone. The metabolites in the unconjugated, glucuronide, and sulfate fractions were identified by chromat...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Kime DE,Scott AP,Canario AV

    更新日期:1992-09-01 00:00:00

  • Molecular, cellular, morphological, physiological and behavioral aspects of gonadotropin-inhibitory hormone.

    abstract::Gonadotropin-inhibitory hormone (GnIH) is a hypothalamic neuropeptide that was isolated from the brains of Japanese quail in 2000, which inhibited luteinizing hormone release from the anterior pituitary gland. Here, we summarize the following fifteen years of researches that investigated on the mechanism of GnIH actio...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章,评审


    authors: Ubuka T,Son YL,Tsutsui K

    更新日期:2016-02-01 00:00:00

  • Variation in thyroid response to thyroid-stimulating hormone in juvenile coho salmon (Oncorhynchus kisutch).

    abstract::Changes in the circulating levels of thyroid hormones measured by radioimmunoassay in yearling coho salmon in response to injection of bovine thyroid-stimulating hormone (TSH) were evaluated from January through August. Doses of TSH ranging from 0.2 to 6.4 micrograms/g body wt were ineffective in stimulating T4 in Jan...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Swanson P,Dickhoff WW

    更新日期:1987-12-01 00:00:00

  • Mapping the brain of the chicken (Gallus gallus), with emphasis on the septal-hypothalamic region.

    abstract::There has been remarkable progress in discoveries made in the avian brain, particularly over the past two decades. This review first highlights some of the discoveries made in the forebrain and credits the Avian Brain Nomenclature Forum, responsible for changing many of the terms found in the cerebrum and for stimulat...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章,评审


    authors: Kuenzel WJ

    更新日期:2018-01-15 00:00:00

  • Pattern of secretion of immunoreactive inhibin/activin subunits by avian granulosa cells.

    abstract::The messenger RNA expression for the inhibin/activin subunits in the granulosa layer of avian follicles of different developmental stages has previously been reported. In the present study, we examined the pattern of secretion of these protein subunits from cultured granulosa cells (GC) of avian follicles of defined m...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Johnson PA,Brooks CF,Davis AJ

    更新日期:2005-05-01 00:00:00

  • Opiate inhibition of growth hormone secretion in young chickens.

    abstract::Plasma concentrations of growth hormone (GH) were decreased following the intravenous administration of morphine sulfate. Maximum inhibition of GH secretion was observed 40 min after morphine sulfate challenge. At this time, doses of morphine sulfate (at 5 mg and 50 mg/kg) reduced the GH concentrations by 86 and 90%, ...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Harvey S,Scanes CG

    更新日期:1987-01-01 00:00:00

  • Circannual and circadian variations in plasma levels of steroids (cortisol, estradiol-17 beta, estrone, and testosterone) correlated with the annual gonadal cycle in the catfish, Heteropneustes fossilis (Bloch).

    abstract::Circannual and circadian variations in plasma levels of steroids were estimated by radioimmunoassay in the female and male catfish, Heteropneustes fossilis, over two consecutive annual reproductive cycles. In the female catfish, testosterone (T), estradiol-17 beta (E2), and estrone (E1) were detectable in the plasma o...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Lamba VJ,Goswami SV,Sundararaj BI

    更新日期:1983-05-01 00:00:00

  • Reproductive endocrinology in chondrichthyans: the present and the future.

    abstract::The class Chondrichthyes, that includes Elasmobranchii and Holocephali, is a diverse group of fish occupying a key position at the base of vertebrate evolution. Their evolutionary success is greatly attributed to their wide range of reproductive strategies controlled by different endocrine mechanics. As in other verte...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章,评审


    authors: Awruch CA

    更新日期:2013-10-01 00:00:00

  • Frog ANP increases the amiloride-sensitive Na(+) channel activity in urinary bladder cells of Japanese tree frog, Hyla japonica.

    abstract::We examined the mechanism of amiloride-sensitive Na(+) channels (ENaC) activated by fANP in epithelial cells of frog urinary bladder by using a cell-attached patch-clamp technique. ENaC activities in the epithelial cells were significantly increased following administration of both 10(-9)M fANP and 10(-5)M 8-Br-cGMP. ...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Yamada T,Matsuda K,Uchiyama M

    更新日期:2007-06-01 00:00:00

  • The role of arginine vasotocin and prostaglandin F2 alpha on oviposition and luteolysis in the common snapping turtle Chelydra serpentina.

    abstract::The administration of arginine vasotocin (AVT) to gravid snapping turtles with steroidogenically active corpora lutea and high plasma progesterone concentration (1480 +/- 155 pg/ml) did not trigger oviposition, whereas 12 days after ovulation when luteolysis occurred and plasma progesterone concentration was low (570 ...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Mahmoud IY,Cyrus RV,McAsey ME,Cady C,Woller MJ

    更新日期:1988-01-01 00:00:00

  • Effects of bovine TSH on the tissue thyroxine level and metamorphosis in prometamorphic flounder larvae.

    abstract::Bovine thyroid-stimulating hormone (TSH) was microinjected (0.2 microliter/fish) into prometamorphic flounder larvae and the effects on metamorphosis as well as the tissue thyroxine (T4) and triiodothyronine (T3) levels were studied. After a single injection of TSH (5 mIU/g), the tissue T4 concentration increased mark...

    journal_title:General and comparative endocrinology

    pub_type: 杂志文章


    authors: Inui Y,Tagawa M,Miwa S,Hirano T

    更新日期:1989-06-01 00:00:00