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Social stimulation and regulation of body mass in female starlings
Animal Behaviour, 1997The influence of consexual social stimulation on the regulation of body mass in female European starlings, Sturnus vulgarisduring reproductive development was examined. Twenty-four pairs of birds were housed in three social stimulation treatments: (1) control, where birds were housed in visual isolation from their partner; (2) visual contact, pairs of ...
Witter, MS, Goldsmith, AR
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Photoperiodic regulation of body mass, food intake, and reproduction in meadow voles
American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 1983Adult male voles were maintained for 10 wk in long or short photoperiods (14 or 10 h of light/day). A third group of animals housed in the long photoperiod was implanted with capsules containing melatonin. Body weight and food intake were measured weekly; various tissues were weighed and analyzed at the time of autopsy. After 10 wk, voles in the short
J, Dark, I, Zucker, G N, Wade
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Food intake, feeding rhythm, and body mass regulation in Svalbard rock ptarmigan
American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 1986Food intake (FI), feeding activity (FA), and body mass (BM) were recorded continuously throughout a 13-mo period in Svalbard rock ptarmigan kept under natural conditions of light and ambient temperature at Svalbard (79 degrees N). FI was persistently high from March until August, including the period when daylight is continuous, whereas it was low ...
K A, Stokkan, A, Mortensen, A S, Blix
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Photoperiodic regulation of body mass and fat reserves in the meadow vole
Physiology & Behavior, 1986Short photoperiods reduce both body mass and food intake of male meadow voles. To help determine whether the primary effect of short day lengths is on regulation of some component of body mass or on the control of food consumption, voles housed in a long photoperiod were provided rations equivalent to those consumed by animals in short day lengths ...
J, Dark, I, Zucker
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Body mass regulation and the daily singing routines of European robins
Animal Behaviour, 2002Stochastic dynamic programming (SDP) models of daily singing and foraging routines in birds relate an individual's fat reserves to the relative costs and benefits of singing and foraging at different times of day. Two central predictions of such models are that: (1) overnight loss of fat reserves is higher on colder nights, and (2) birds sing more at ...
Thomas, RJ, Cuthill, IC
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Hypothalamic digoxin and regulation of body mass index.
Neurology India, 2003The hypothalamus produces digoxin, an endogenous membrane Na+-K+ ATPase inhibitor and regulator of neurotransmission. Digoxin being a steroidal glycoside, is synthesised by the isoprenoid pathway. In view of the reports of elevated digoxin levels in metabolic syndrome X with high body mass index, the isoprenoid pathway mediated biochemical cascade was ...
A. Ravi Kumar, P. A. Kurup
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The regulation of body mass and its relation to the development of obesity
Orvosi Hetilap, 2007A testtömeg, ezen belül a zsírtömeg regulálása egy visszacsatolásos rendszerben valósul meg, melyben a zsírtömeg nagyságáról adipositasszignálok (leptin, inzulin, amylin), a pillanatnyi tápláltsági állapotról intestinalis peptidhormonok (ghrelin, PYY, PP, GLP-1, OXM, CCK) és a n. vagus informálják a központi idegrendszert mint központi szabályozót.
Attila, Juhász +3 more
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Regulation of body mass growth through activin type IIB receptor in teleost fish
General and Comparative Endocrinology, 2009Myostatin is a TGF-beta family member that plays a key role in regulating skeletal muscle growth. Previous studies in mammals have demonstrated that myostatin is capable of binding the two activin type II receptors. Additionally, activin type II receptors have been shown to be capable of binding a number of other TGF-beta family members besides ...
Yamila, Carpio +5 more
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Functional Ecology, 1997
1. The adaptive mass‐regulation hypothesis suggests that birds should respond to worsening or unpredictable foraging conditions by increasing body mass and energetic reserves. However, previous work on adult European Starlings, Sturnus vulgaris L., has revealed that the response to worsening foraging conditions varies according to the seasonal status ...
Witter, MS, Swaddle, JP
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1. The adaptive mass‐regulation hypothesis suggests that birds should respond to worsening or unpredictable foraging conditions by increasing body mass and energetic reserves. However, previous work on adult European Starlings, Sturnus vulgaris L., has revealed that the response to worsening foraging conditions varies according to the seasonal status ...
Witter, MS, Swaddle, JP
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