Search Results - "Physiological zoology"

On the Utility of Uniformity in the Definition of Basal Rate of Metabolism by McNab, Brian K.

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Elevated Maintenance Costs in an Anuran (Rana catesbeiana) Exposed to a Mixture of Trace Elements during the Embryonic and Early Larval Periods by Rowe, Christopher L., Kinney, Owen M., Nagle, Roy D., Congdon, Justin D.

“…We investigated the relationship between maintenance costs (standard metabolic rates, measured as O2consumption at rest) in tadpoles of the bullfrog,Rana…”
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Changes in Lean Mass and in Organs of Nutrient Assimilation in a Long‐Distance Passerine Migrant at a Springtime Stopover Site by Karason, William H., Pinshow, Berry

“…The primary energy source for migration is fat, but nonfat body components can vary in concert with lipid stores in some migrants. The goals of this study were…”
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Protein Use and Muscle‐Fiber Changes in Free‐Ranging, Hibernating Black Bears by Tinker, Daniel B., Harlow, Henry J., Beck, Thomas D. I

“…Studies of the metabolic and physiological changes that bears undergo during hibernation have, for the most part, supported the paradigm that bears use only…”
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Plasma Corticosterone and Testosterone Levels during the Annual Reproductive Cycle of Male Brown Anoles (Anolis sagrei) by Tokarz, Richard R., McMann, Stephen, Seitz, Linda, John‐Alder, Henry

“…The objective of the present study was to determine the plasma levels of testosterone and corticosterone in maleAnolis sagreiduring the annual reproductive…”
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Thermoregulation by a Nocturnal Elapid Snake (Hoplocephalus bungaroides) in Southeastern Australia by Webb, Jonathan K., Shine, Richard

“…Studies of reptilian thermoregulation have tended to focus on diurnal heliothermic taxa that display overt thermoregulatory behavior, with nocturnal reptiles…”
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Osmoregulation of the Atlantic Stingray (Dasyatis sabina) from the Freshwater Lake Jesup of the St. Johns River, Florida by Piermarini, Peter M., Evans, David H.

“…The goals of this study were to (1) measure plasma osmolytes and rectal gland weights of a freshwater (FW) Atlantic stingray (Dasyatis sabina) population in…”
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Effects of Water pH and Calcium Concentration on Ion Balance in Fish of the Rio Negro, Amazon by Val, Adalberto L., Gonzalez, Richard J., Wood, Chris M., Wilson, Rod W., Patrick, Marjorie L., Bergman, Harold L., Narahara, Annie

“…We examined the effects of acute low‐pH exposure on ion balance (Na+, Cl−, K+) in several species of fish captured from the Rio Negro, a dilute, acidic…”
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Responses of an Amazonian Teleost, the Tambaqui (Colossoma macropomum), to Low pH in Extremely Soft Water by Val, Adalberto L., Wood, Chris M., Wilson, Rod W., Gonzalez, Richard J., Patrick, Marjorie L., Bergman, Harold L., Narahara, Annie

“…Our goal was to compare the internal physiological responses to acid challenge in an acidophilic tropical teleost endemic to dilute low‐pH waters with those in…”
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Ecological and Evolutionary Implications of Energy and Protein Requirements of Avian Frugivores Eating Sugary Diets by Witmer, Mark C.

“…To assess how the high‐sugar/low‐protein content of fruit diets affects digestive function and nutrition of frugivorous birds, I compared intake, passage rate,…”
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Dietary Flexibility and Intestinal Plasticity in Birds: A Field and Laboratory Study by Sabat, Pablo, Novoa, Fernando, Bozinovic, Francisco, Martínez del Rio, Carlos

“…The adaptive modulation hypothesis posits that the expression of digestive proteins should be modulated in response to intake of their respective substrates. A…”
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Limits to Milk Flow and Energy Allocation during Lactation of the Hispid Cotton Rat (Sigmodon hispidus) by Rogowitz, Gordon L.

“…Energy allocation for maternal maintenance and milk production was examined in lactating hispid cotton rats(Sigmodon hispidus)supporting three to seven…”
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Evidence for the Involvement of the Crustacean Hyperglycemic Hormone in the Regulation of Lipid Metabolism by Santos, Euclydes Antonio, Eduardo, Luiz, Nery, Maia, Gonçalves, Alex Augusto, Keller, Rainer

“…Effects of the crustacean hyperglycemic hormone on total lipids in the hemolymph ofChasmagnathus granulataand on free fatty acids, phospholipids, and…”
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Interindividual Variability in Body Composition and Resting Oxygen Consumption Rate in Breeding Tree Swallows,Tachycineta bicolor by Burness, Gary P., Hochachka, Peter W., Ydenberg, Ronald C.

“…Basal metabolic rate is one of the most widely measured physiological traits. Previous studies on lab mice and field‐caught lizards suggest that individuals…”
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Protein Catabolism and Renal Function in Lactating Northern Elephant Seals by Crocker, Daniel E., Webb, Paul M., Costa, Daniel P., Le Boeuf, Burney J.

“…Northern elephant seals,Mirounga angustirostris, fast completely from food and water during lactation. Previous investigations of maternal investment suggested…”
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Are Precocial Young Cheaper? Lactation Energetics in the Guinea Pig by Künkele, Joachim, Trillmich, Fritz

“…Caviomorphs stand out from other small rodents by producing extremely precocial young. Pups begin to nibble solid food right after birth and can survive…”
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Body Condition and the Adrenal Stress Response in Captive American Kestrel Juveniles by Heath, Julie A., Dufty, Jr, Alfred M.

“…We examined the adrenal response to handling stress of birds in different body conditions. In order to affect the birds' body condition, young (73‐d old)…”
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Sexual Dimorphism in Physiological Performance of Whiptail Lizards (GenusCnemidophorus) by Cullum, Alistair J.

“…Numerous studies have examined sexual dimorphism in the morphology and behavior of vertebrates; very few, however, have explicitly investigated the possibility…”
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The Water Absorption Response: A Behavioral Assay for Physiological Processes in Terrestrial Amphibians by Hillyard, Stanley D., Hoff, Karin von Seckendorff, Propper, Catherine

“…Terrestrial amphibians take up water by abducting the hind limbs and pressing a specialized portion of the ventral skin to a moist surface, using a…”
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Estimation of Total Body Water in Pinnipeds Using Hydrogen‐Isotope Dilution by Bowen, W. Don, Iverson, Sara J.

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