... test (GTT), we tested for a link between the capacity to regulate glucose levels and survival in zebra finches. We also investigated for the effects of ambient factors, age, sex, and manipulated developmental and adult conditions (i.e. natal brood size and foraging cost, in a full factorial design...

... intensity: +4.4°C) were modeled from the most extreme events detected by a long-term regional temperature dataset. Simultaneous exposure to these potential stressors did not affect embryo survival. However, the heatwave did elicit significant metabolic effects that included higher rates of routine...

..., settlement and survival). Adaptive potentials and physiological reaction norms were calculated across three stages to integrate heat tolerance at different biological scales. Selective breeding improved larval survival to heat by 1.5–2.5× but did not result in substantial enhancement of settlement, although...

... for generating more resilient phenotypes. Here, we evaluated the relationship between pollen protein to lipid (P:L) ratio and honey bee insecticide resilience. We hypothesized that pollen diets richer in lipids would lead to increased survival in bees exposed to insecticides, as pollen-derived lipids have...

...Mathias Schakmann; Victoria Becker; Mathias Søgaard; Jacob L. Johansen; John F. Steffensen; Paolo Domenici ABSTRACT Fast escape responses to a predator threat are fundamental to the survival of mobile marine organisms. However, elasmobranchs are often underrepresented in such studies. Here, we...

... examined the body composition of African striped mice ( Rhabdomys pumilio ) living in a seasonal habitat with a long food-restricted dry season. We tested for seasonal changes in body composition ( N =159 measurements of 113 individuals) and whether dry season survival was related to fat mass ( N =66...

... offspring survival. I argue that this goes a long way to explain the very pronounced success of endopterygote insects. Competing interests The author declares no competing or financial interests. © 2018. Published by The Company of Biologists Ltd 2018 Summary: The pronounced success...

... interact synergistically to reduce survival. Compared with exposure to each stressor alone, during simultaneous sublethal exposure to heat stress and oxidative stress the normal induction of key oxidative-stress response (OxSR) genes was generally inhibited, whereas the induction of key heat-shock response...

..., to their pre-imaginal and/or adult stages. Thus, these ectoparasites should be adapted to environmental conditions in burrows, including high fractional concentrations of CO 2 ( F CO 2 ). We examined how a high F CO 2 (0.04) affected survival and reproductive success of a hematophagous ectoparasite...

... latitude, tropical ectotherms live close to their thermal limits, and are thus particularly vulnerable to increases in temperature. In this study, we examined how predicted patterns of global warming will affect survival and sexual traits in the Trinidadian guppy ( Poecilia reticulata ). Guppies were...

... behaviours, energy expenditure and survival rate. Method of attachment (harness, collar, glue, anchor, implant, breast-mounted or tailmount) had no influence on the strength of these effects but anchored and implanted transmitters had the highest reported rates of device-induced mortality. Furthermore...

... that warmer winters increase metabolism and decrease winter survival and subsequent fecundity. Energetic constraints (insufficient energy stores) have been hypothesized as the cause of winter mortality but have not been tested explicitly. Thus, alternative sources of mortality, such as winter dehydration...

... and expenditure strategy. * Author for correspondence ( [email protected] ) 26 10 2010 © 2011. 2011 survival energy expenditure optimal strategy performance constraints energetic niche power envelope behavioural plasticity Magellanic penguin Spheniscus magellanicus...

... the anhydrobiotic tardigrade Paramacrobiotus richtersi as a model organism, we have evaluated the effects of environmental factors, such as temperature and air humidity level (RH), on the survival of desiccated animals and on the degradation of their DNA. Tardigrades naturally desiccated in leaf litter...

...) probable strategy that confines our appreciation of the overall robustness of the cell as a `survival machine'. The main operative process at any given time (perfusion, diffusion or whatever) has always to be considered very carefully in relation to the organisational structure of the cell, which can...

... in this species is approximately −4 °C, hatchlings rely on supercooling to survive exposure to extreme cold. We investigated the influence of environmental ice nuclei on susceptibility to inoculative freezing in hatchling C. picta indigenous to the Sandhills of west-central Nebraska. In the absence of external...

...Garth M. Bray; Maria Paz Villegas-Pérez; Manuel Vidal-Sanz; Albert J. Aguayo ABSTRACT During both development and regeneration, the survival of neurones and the growth of axons are controlled by inherent neuronal properties, conditions in the axonal environment, and the establishment...