Results 51 to 60 of about 6,647 (234)

Latitudinal Variation in Seasonal Activity and Mortality in Ratsnakes (Elaphe obsoleta)

open access: yes, 2010
The ecology of ectotherms should be particularly affected by latitude because so much of their biology is temperature dependent. Current latitudinal patterns should also be informative about how ectotherms will have to modify their behavior in response ...
Blouin-Demers, Gabriel   +3 more
core   +1 more source

Ectotherms Follow the Converse to Bergmann's Rule [PDF]

open access: yesEvolution, 1997
In a recent paper, Van Voorhies (1996) suggested that Bergmann size clines in ectotherms might result from developmental processes that cause cells to grow larger at lower temperatures. Van Voorhies (1996) found that when Caenorhabditis elegans was grown at cool temperatures cell sizes were larger than control groups reared in a warmer environment, and
openaire   +3 more sources

Quantitative mismatch between empirical temperature-size rule slopes and predictions based on oxygen limitation

open access: yesScientific Reports, 2021
In ectotherms, adult body size commonly declines with increasing environmental temperature, a pattern known as the temperature-size rule. One influential hypothesis explaining this observation is that the challenge of obtaining sufficient oxygen to ...
Sigurd Einum   +2 more
doaj   +1 more source

Isotopic Ordering in Eggshells Reflects Body Temperatures and Suggests Differing Thermophysiology in Two Cretaceous Dinosaurs [PDF]

open access: yes, 2015
Our understanding of the evolutionary transitions leading to the modern endothermic state of birds and mammals is incomplete, partly because tools available to study the thermophysiology of extinct vertebrates are limited.
Kohn, Matthew J.
core   +1 more source

07 Intern Assignment Biological Adaptations [PDF]

open access: yes, 2020
WELCOME to WINDOWS on the INQUIRY CLASSROOM! You have landed on a piece of a National Science Foundation Project (DUE 1245730) directed by Professor Chris Bauer, Chemistry Department, University of New Hampshire.
Bauer, Christopher F.
core   +1 more source

The immune system of ectothermic vertebrates

open access: yesVeterinary Immunology and Immunopathology, 1996
(Uploaded by Plazi for the Bat Literature Project) The adaptive immune system, as defined by T cell receptors, immunoglobulins, and the major histocompatibility complex (MHC), has been described definitively at the level of teleost fish. Cartilaginous fish, which display many of the hallmarks of such an adaptive system, nevertheless have several ...
openaire   +4 more sources

Acclimatization in the physiological performance of an introduced ectotherm

open access: yesJournal of Experimental Biology, 2020
Phenotypic flexibility may facilitate range expansion by allowing organisms to maintain high levels of performance when introduced to novel environments. Phenotypic flexibility, such as reversible acclimatization, permits organisms to achieve high performance over a wide range of environmental conditions, without the costly allocation or acquisition ...
Chase T. Kinsey   +8 more
openaire   +4 more sources

The Effects of Temperature on the Turnover of δ18O and δD in Juvenile Corn Snakes (Elaphe guttata): A Novel Study with Ecological Implications

open access: yesDiversity, 2019
The use of natural variation in stable isotope ratios continues to be used in ecological studies without proper validation through laboratory studies. This study tested the effects of temperature, time, and turnover in the scales of juvenile corn snakes (
Samuel J. Hirt, Kent A. Hatch
doaj   +1 more source

A unifying model to estimate thermal tolerance limits in ectotherms across static, dynamic and fluctuating exposures to thermal stress

open access: yesScientific Reports, 2021
Temperature tolerance is critical for defining the fundamental niche of ectotherms and researchers classically use either static (exposure to a constant temperature) or dynamic (ramping temperature) assays to assess tolerance.
Lisa Bjerregaard Jørgensen   +4 more
doaj   +1 more source

Limpet feeding rate and the consistency of physiological response to temperature [PDF]

open access: yes, 2014
Thermal reaction norms are fundamental relationships for geographic comparisons of organism response to temperature. They are shaped by an organism’s environmental history and provide insights into both the global patterns of thermal sensitivity and the ...
Clarke, Andrew   +5 more
core   +2 more sources

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