Search Results - "Zena, Lucas A."

Seasonal changes in plasma concentrations of the thyroid, glucocorticoid and reproductive hormones in the tegu lizard Salvator merianae by Zena, Lucas A., Dillon, Danielle, Hunt, Kathleen E., Navas, Carlos A., Bícego, Kênia C., Buck, C. Loren

“…•Higher sex, adrenal and thyroid hormones levels in active than hibernation season.•Testosterone and estradiol peaks coincide in September, during reproductive…”
Get full text

Local variation in stress response of juvenile anadromous brown trout, Salmo trutta by Berry, Madeleine, Zena, Lucas A., Roques, Jonathan A. C., Sandblom, Erik, Thorstad, Eva B., Höjesjö, Johan

“…Habitat fragmentation may cut off anadromous salmonids from parts of their potential native habitat and separate previously connected populations…”
Get full text

Thermal Acclimation to the Highest Natural Ambient Temperature Compromises Physiological Performance in Tadpoles of a Stream-Breeding Savanna Tree Frog by Longhini, Leonardo S., Zena, Lucas A., Polymeropoulos, Elias T., Rocha, Aline C. G., da Silva Leandro, Gabriela, Prado, Cynthia P. A., Bícego, Kênia C., Gargaglioni, Luciane H.

“…Amphibians may be more vulnerable to climate-driven habitat modification because of their complex life cycle dependence on land and water. Considering the…”
Get full text

It takes time to heal a broken heart: ventricular plasticity improves heart performance after myocardial infarction in rainbow trout, Oncorhynchus mykiss by Zena, Lucas A, Ekström, Andreas, Gräns, Albin, Olsson, Catharina, Axelsson, Michael, Sundh, Henrik, Sandblom, Erik

“…Coronary arteriosclerosis is a common feature of both wild and farmed salmonid fishes and may be linked to stress-induced cardiac pathologies. Yet, the…”
Get full text

Echocardiography - a non-invasive alternative for assessing cardiac morphology and function in Atlantic salmon (Salmo salar L.) by Becker, Victoria, Kavaliauskiene, Simona, Sandblom, Erik, Zena, Lucas A., Gräns, Albin, Louch, William E., Sjaastad, Ivar, Johansen, Ida B., Frisk, Michael

“…Cardiac-related mortality is increasing in farmed salmon. Non-invasive tools for examining and screening for cardiac morphology and function are limited, and…”
Get full text

Thermal acclimation and acute temperature effects on cardiac barostatic reflexes in rainbow trout (Oncorhynchus mykiss) by Sandblom, Erik, Zena, Lucas A., Pichaud, Nicolas

“…Acute warming raises the metabolism of fish, which is matched by increased heart rate. However, thermal acclimation may reduce heart rate through combinations…”
Get full text

Normoxic limitation of maximal oxygen consumption rate, aerobic scope and cardiac performance in exhaustively exercised rainbow trout (Oncorhynchus mykiss) by McArley, Tristan J, Morgenroth, Daniel, Zena, Lucas A, Ekström, Andreas T, Sandblom, Erik

“…In fish, maximum O2 consumption rate (ṀO2,max) and aerobic scope can be expanded following exhaustive exercise in hyperoxia; however, the mechanisms explaining…”
Get full text

Classification of sex-dependent specific behaviours by tri-axial acceleration in the tegu lizard Salvator merianae by Guadalupe-Silva, Ane, Zena, Lucas A., Hervas, Livia Saccani, Rios, Vitor Passos, Gargaglioni, Luciane H., Buck, C. Loren, Bícego, Kênia C.

“…Validated patterns of behaviour detected by tri-axial acceleration in the laboratory can be used for remote measurements of free-living animals. The tegu…”
Get full text

Increased reliance on coronary perfusion for cardiorespiratory performance in seawater-acclimated rainbow trout by Wallbom, Nicklas, Zena, Lucas A, McArley, Tristan J, Ekström, Andreas, Axelsson, Michael, Gräns, Albin, Sandblom, Erik, Morgenroth, Daniel

“…Salmonid ventricles are composed of spongy and compact myocardium, the latter being perfused via a coronary circulation. Rainbow trout (Oncorhynchus mykiss)…”
Get full text

Hormonal correlates of the annual cycle of activity and body temperature in the South-American tegu lizard (Salvator merianae) by Zena, Lucas A., Dillon, Danielle, Hunt, Kathleen E., Navas, Carlos A., Buck, C. Loren, Bícego, Kênia C.

“…•Seasonal changes in tegus’ activity and Tb vary between sexes.•Triiodothyronine (T3) is positively correlated with activity in tegu lizards.•Thyroid hormones…”
Get full text

Beating the heart failure odds: long-term survival after myocardial ischemia in juvenile rainbow trout by Zena, Lucas A, Ekström, Andreas T, Morgenroth, Daniel, McArley, Tristan, Axelsson, Michael, Sundh, Henrik, Palmquist, Anders, Johansen, Ida B, Gräns, Albin, Sandblom, Erik

“…Salmonid fish include some of the most valued cultured fish species worldwide. Unlike most other fish, the hearts of salmonids, including Atlantic salmon and…”
Get more information

Temperature effects on metabolism and energy requirement during the fast growth phase in the red-footed tortoise, Chelonoidis carbonaria by Mendoza, Pierina, Furuta, Camila, Garcia, Beatriz, Zena, Lucas A., Carciofi, Aulus C., Bícego, Kênia C.

“…Early life is a challenging phase because of the high rates of morphophysiological development and growth. Changes in ambient temperature, which directly…”
Get full text

Seasonal changes in steroid and thyroid hormone content in shed skins of the tegu lizard Salvator merianae by Zena, Lucas A., Dillon, Danielle, Hunt, Kathleen E., Navas, Carlos A., Bícego, Kênia C., Buck, C. Loren

“…Sampling blood for endocrine analysis from some species may not be practical or ethical. Quantification of hormones extracted from nontypical sample types,…”
Get full text

Starch and fiber intake effects on energy metabolism, growth, and carapacial scute pyramiding of red-footed tortoise hatchlings (Chelonoidis carbonaria) by Mendoza, Pierina, Furuta, Camila, Garcia, Beatriz, Zena, Lucas A., Artoni, Silvana, Dierenfeld, Ellen S., Bícego, Kênia C., Carciofi, Aulus C.

“…Tortoise husbandry includes reports of excessive growth and carapace pyramiding, although triggers still remain to be fully elucidated. Juvenile red-footed…”
Get full text

Who Rules Over Immunology? Seasonal Variation in Body Temperature, Steroid Hormones, and Immune Variables in a Tegu Lizard by Madelaire, Carla B, Zena, Lucas A, Dillon, Danielle, Silva, Diego P, Hunt, Kathleen E, Buck, C Loren, Bícego, Kênia C, Gomes, Fernando R

“…Synopsis Multiple factors can influence the immune response of ectothermic vertebrates, including body temperature (Tb), gonadal steroids, and seasonality, in…”
Get full text

Winter metabolic depression does not change arterial baroreflex control of heart rate in the tegu lizard Salvator merianae by Zena, Lucas A, Dantonio, Valter, Gargaglioni, Luciane H, Andrade, Denis V, Abe, Augusto S, Bícego, Kênia C

“…Baroreflex regulation of blood pressure is important for maintaining appropriate tissue perfusion. Although temperature affects heart rate (fH) reflex…”
Get full text

Baroreflex regulation affects ventilation in the cururu toad Rhinella schneideri by Zena, Lucas A, da Silva, Glauber S F, Gargaglioni, Luciane H, Bícego, Kênia C

“…Anurans regulate short-term oscillations in blood pressure through changes in heart rate (f ), vascular resistance and lymphatic f Lung ventilation in anurans…”
Get full text

Temperature effects on baroreflex control of heart rate in the toad, Rhinella schneideri by Zena, Lucas A., Gargaglioni, Luciane H., Bícego, Kênia C.

“…For an adequate blood supply to support metabolic demands, vertebrates regulate blood pressure to maintain sufficient perfusion to avoid ischemia and other…”
Get full text

Temperature effects on the cardiorespiratory control of American bullfrog tadpoles based on a non-invasive methodology by Longhini, Leonardo S, Zena, Lucas A, da Silva, Glauber S F, Bícego, Kênia C, Gargaglioni, Luciane H

“…Temperature effects on cardiac autonomic tonus in amphibian larval stages have never been investigated. Therefore, we evaluated the effect of different…”
Get full text

Effect of temperature on chemosensitive locus coeruleus neurons of savannah monitor lizards, Varanus exanthematicus by Zena, Lucas A, Fonseca, Elisa M, Santin, Joseph M, Porto, Lays, Gargaglioni, Luciane H, Bícego, Kênia C, Hartzler, Lynn K

“…Savannah monitor lizards (Varanus exanthematicus) are unusual among ectothermic vertebrates in maintaining arterial pH nearly constant during changes in body…”
Get full text