Thermal parental effects on offspring behaviour and their fitness consequences

McDonald, Stephanie; Schwanz, Lisa E.

doi:10.1016/j.anbehav.2017.11.007

Cited by 10 publications

(8 citation statements)

References 55 publications

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“…These findings are like those of other studies (20.7%), supporting the hypothesis that relatives of pro-bands BP-I have increased risk of suffering BP-I. (19) assumed that the subgroup of offspring of BD who will develop major affective disorders in adulthood will have inherited a tendency for high levels of neuroticism. So, in our present study, we found that the cases of our sample (42,0%, n=42) had anxious symptoms on CBCL scale while the control was (20,0%, n=20) and this finding is interesting and statistically significant.…”

Section: Limaa and Colleaguessupporting

confidence: 89%

Psychopathology in Offspring of Parents With Bipolar Disorder in an Egyptian Sample

Effat

Nagy

Mahmoud

et al. 2021

Ain Shams Medical Journal

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Section: Limaa and Colleaguessupporting

confidence: 89%

Psychopathology in Offspring of Parents With Bipolar Disorder in an Egyptian Sample

Effat

Nagy

Mahmoud

et al. 2021

Ain Shams Medical Journal

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“…Incubation is energetically costly in temperate environments where eggs need to be kept warm ( Ardia et al , 2010 ; Nord et al , 2010 ; Nord and Cooper, 2020 ), but also extremely challenging in warm environments ( Amat and Masero, 2004 ; Coe et al , 2015 ; Nwaogu et al , 2017 ), where incubating birds must prevent eggs from overheating ( Carroll et al , 2015a ; Grant, 1982 ; McDonald and Schwanz, 2018 ) while also thermoregulating themselves ( DuRant et al , 2019 ; McKechnie, 2019 ; O’Connor et al , 2018 ). Behaviourally, birds initially respond to high temperatures by increasing incubation constancy ( AlRashidi et al , 2011 ; Cones, 2017 ; Conway and Martin, 2000 ; Mortensen and Reed, 2018 ; Mougeot et al , 2014 ) or engaging in shading behaviour ( Brown and Downs, 2003 ; Clauser and McRae, 2017 ; Downs and Ward, 1997 ; Grant, 1982 ) in order to regulate nest temperatures.…”

Section: Introductionmentioning

confidence: 99%

Dehydration risk is associated with reduced nest attendance and hatching success in a cooperatively breeding bird, the southern pied babbler Turdoides bicolor

Bourne

Ridley

McKechnie

et al. 2021

Conservation Physiology

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High air temperatures have measurable negative impacts on reproduction in wild animal populations, including during incubation in birds. Understanding the mechanisms driving these impacts requires comprehensive knowledge of animal physiology and behaviour under natural conditions. We used a novel combination of a non-invasive doubly labelled water (DLW) technique, nest temperature data and field-based behaviour observations to test effects of temperature, rainfall and group size on physiology and behaviour during incubation in southern pied babblers Turdoides bicolor, a cooperatively breeding passerine endemic to the arid savanna regions of southern Africa. The proportion of time that clutches were incubated declined as air temperatures increased, a behavioural pattern traditionally interpreted as a benefit of ambient incubation. However, we show that (i) clutches had a <50% chance of hatching when exposed to daily maximum air temperatures of >35.3°C; (ii) pied babbler groups incubated their nests almost constantly (99% of daylight hours) except on hot days; (iii) operative temperatures in unattended nests frequently exceeded 40.5°C, above which bird embryos are at risk of death; (iv) pied babblers incubating for long periods of time failed to maintain water balance on hot days; and (v) pied babblers from incubating groups lost mass on hot days. These results suggest that pied babblers might leave their nests during hot periods to lower the risk of dehydration associated with prolonged incubation at high operative temperatures. As mean air temperatures increase and extreme heat events become more frequent under climate change, birds will likely incur ever greater thermoregulatory costs of incubation, leading to compromised nest attendance and increased potential for eggs to overheat, with implications for nest success and, ultimately, population persistence.

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“…All models included the fixed effects of: sex (male or female), parental treatment (long-bask and short-bask), offspring treatment (long-bask and short-bask), lizard age when photographed (days) and sampling year (2015 and 2016). A previous study with a subset of these lizards found evidence for a three-way interaction effect between sex, offspring and parental basking treatment on offspring behaviour (McDonald & Schwanz, 2018). So, we also included this three-way interaction in all our models.…”

Section: Methodsmentioning

confidence: 99%

Genetic and environmental drivers of colour and pattern in the Australian jacky dragon (Amphibolurus muricatus)

Raynal

Schwanz

Riley

et al. 2022

J of Evolutionary Biology

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The underlying drivers of variation in the colouration (colour and pattern) of animals can be genetic, non‐genetic, or more likely, a combination of both. Understanding the role of heritable genetic elements, as well as non‐genetic factors such as age, habitat or temperature, in shaping colouration can provide insight into the evolution and function of these traits, as well as the speed of response to changing environments. This project examined the genetic and non‐genetic drivers of continuous variation in colouration in a lizard, the jacky dragon (Amphibolurus muricatus). We leveraged a large captive experiment that manipulated parental and offspring thermal environment to simultaneously estimate the genetic and non‐genetic drivers of variation in colouration. We found that the overall brightness, the elongation of the longitudinal stripes on the dorsum and the contrast between light and dark patches of the pattern were all heritable. Colouration varied according to the age of the hatchling; however, the thermal environment of neither the parents nor offspring contributed significantly to colouration. It appears that developmental plasticity and maternal effects associated with temperature are not important drivers of variation in our measures of colouration.

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Thermal parental effects on offspring behaviour and their fitness consequences

Cited by 10 publications

References 55 publications

Psychopathology in Offspring of Parents With Bipolar Disorder in an Egyptian Sample

Psychopathology in Offspring of Parents With Bipolar Disorder in an Egyptian Sample

Dehydration risk is associated with reduced nest attendance and hatching success in a cooperatively breeding bird, the southern pied babbler Turdoides bicolor

Genetic and environmental drivers of colour and pattern in the Australian jacky dragon (Amphibolurus muricatus)

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