Energetic cost determines voluntary movement speed only in familiar environments

Seebacher, Frank; Borg, Jason; Schlotfeldt, Kathryn; Yan, Zhongning

doi:10.1242/jeb.136689

Cited by 26 publications

(24 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fiber optic cables connected to an oxygen meter (Witrox, PreSens, Regensburg, Germany) were used to monitor sensor spots. Respirometers were placed inside temperature controlled water baths, and fish were left undisturbed inside respirometers for 2 h before measuring resting oxygen consumption rates 36 . After 2 h, the respirometers were sealed by remotely switching off the pump to stop the water flow without disturbing the fish.…”

Section: Methodsmentioning

confidence: 99%

Differential effects of developmental thermal plasticity across three generations of guppies (Poecilia reticulata): canalization and anticipatory matching

Roy

Loughland

Seebacher

2017

Sci Rep

Self Cite

View full text Add to dashboard Cite

Developmental plasticity can match offspring phenotypes to environmental conditions experienced by parents. Such epigenetic modifications are advantageous when parental conditions anticipate offspring environments. Here we show firstly, that developmental plasticity manifests differently in males and females. Secondly, that under stable conditions, phenotypic responses (metabolism and locomotion) accumulate across several generations. Metabolic scope in males was greater at warmer test temperatures (26–36 °C) in offspring bred at warm temperatures (29–30 °C) compared to those bred at cooler temperatures (22–23 °C), lending support to the predictive adaptive hypothesis. However, this transgenerational matching was not established until the second (F2) generation. For other responses, e.g. swimming performance in females, phenotypes of offspring bred in different thermal environments were different in the first (F1) generation, but became more similar across three generations, implying canalization. Thirdly, when environments changed across generations, the grandparental environment affected offspring phenotypes. In females, the mode of the swimming thermal performance curve shifted to coincide with the grandparental rather than the parental or offspring developmental environments, and this lag in response may represent a cost of plasticity. These findings show that the effects of developmental plasticity differ between traits, and may be modulated by the different life histories of males and females.

show abstract

Section: Methodsmentioning

confidence: 99%

Differential effects of developmental thermal plasticity across three generations of guppies (Poecilia reticulata): canalization and anticipatory matching

Roy

Loughland

Seebacher

2017

Sci Rep

Self Cite

View full text Add to dashboard Cite

show abstract

“…Fibre optic cables connected to an oxygen meter (Witrox, PreSens) were used to monitor the sensor spots. The respirometers were placed in temperature-controlled water baths, and fish were left undisturbed inside for 2 h before measurement of resting oxygen consumption rate (a period sufficient to achieve resting levels; Seebacher et al, 2016). After 2 h, the pump was switched off remotely to stop the water flow and thereby seal the respirometers without disturbing the fish.…”

Section: Oxygen Consumptionmentioning

confidence: 99%

Living in flowing water increases resistance to ultraviolet B radiation

Ghanizadeh-Kazerouni

Franklin

Seebacher

2017

Journal of Experimental Biology

Self Cite

View full text Add to dashboard Cite

Ultraviolet B radiation (UV-B) is an important environmental driver that can affect locomotor performance negatively by inducing production of reactive oxygen species (ROS). Prolonged regular exercise increases antioxidant activities, which may alleviate the negative effects of UV-B-induced ROS. Animals naturally performing exercise, such as humans performing regular exercise or fish living in flowing water, may therefore be more resilient to the negative effects of UV-B. We tested this hypothesis in a fully factorial experiment, where we exposed mosquitofish (Gambusia holbrooki) to UV-B and control (no UV-B) conditions in flowing and still water. We show that fish exposed to UV-B and kept in flowing water had increased sustained swimming performance (U crit ), increased antioxidant defences (catalase activity and glutathione concentrations) and reduced cellular damage (lipid peroxidation and protein carbonyl concentrations) compared with fish in still water. There was no effect of UV-B or water flow on resting or maximal rates of oxygen consumption. Our results show that environmental water flow can alleviate the negative effects of UV-Binduced ROS by increasing defence mechanisms. The resultant reduction in ROS-induced damage may contribute to maintain locomotor performance. Hence, the benefits of regular exercise are 'transferred' to improve resilience to the negative impacts of UV-B. Ecologically, the mechanistic link between responses to different habitat characteristics can determine the success of animals. These dynamics have important ecological connotations when river or stream flow changes as a result of weather patterns, climate or human modifications.

show abstract

“…Respirometers were placed inside temperature controlled water bath, and fish were left undisturbed inside respirometers for 2 h before measuring resting oxygen consumption rates (Seebacher et al . ). After 2 h, the respirometers were sealed by remotely switching off the pump to stop the water flow without disturbing the fish.…”

Section: Methodsmentioning

confidence: 97%

Parental exposure modulates the effects of UV‐B on offspring in guppies

2017

Self Cite

View full text Add to dashboard Cite

Summary The environment experienced by parents can alter offspring phenotypes. Such developmental plasticity is beneficial when it optimises offspring responses to their prevailing environment. Plasticity may be detrimental, however, if there is a mismatch between parental and offspring environments, although reversible acclimation within individuals could counteract a developmental mismatch. UV‐B radiation damages cells directly and by increasing reactive oxygen species (ROS) formation. There are indications that the developmental environment can influence ROS defences, which could enhance performance and fitness. In addition, animals exposed to UV‐B can acclimate to increase their antioxidant defences and thereby reduce ROS‐induced damage. Our aim was to test experimentally whether there are transgenerational effects of UV‐B exposure. We tested the hypothesis that parental exposure to UV‐B modulates offspring ROS defence mechanisms to reduce the negative effects of UV‐B in offspring. In a fully factorial experiment, we show that exposing guppies (Poecilia reticulata) to UV‐B increased the resilience of their offspring to the negative effects of UV‐B. When exposed to UV‐B, offspring from parents also exposed to UV‐B had significantly greater sustained swimming performance compared to controls. Higher swimming performance was paralleled by increased catalase activity and glutathione concentrations, and reduced ROS‐induced damage to membranes and proteins. There was no effect of parental exposure to UV‐B on offspring superoxide dismutase activity, resting and active metabolic rates or offspring size. However, parental exposure to UV‐B increased damage to proteins and infection rates by white spot fungus in control (no UV‐B) offspring. Our results showed that UV‐B acts as a signal that can induce developmental modification of phenotypes. Transgenerational matching of offspring phenotypes is likely to have a fitness advantage in environments exposed to UV‐B. However, the trade‐off between the beneficial effects of parental UV‐B exposure on offspring performance when exposed to UV‐B, and the increased susceptibility to infection and protein damage when offspring are not exposed to UV‐B can be important in determining the resilience of populations in variable and modified environments. A http://onlinelibrary.wiley.com/doi/10.1111/1365-2435.12817/suppinfo is available for this article.

show abstract

Energetic cost determines voluntary movement speed only in familiar environments

Cited by 26 publications

References 55 publications

Differential effects of developmental thermal plasticity across three generations of guppies (Poecilia reticulata): canalization and anticipatory matching

Differential effects of developmental thermal plasticity across three generations of guppies (Poecilia reticulata): canalization and anticipatory matching

Living in flowing water increases resistance to ultraviolet B radiation

Parental exposure modulates the effects of UV‐B on offspring in guppies

Contact Info

Product

Resources

About