Adaptive Plasticity in Amphibian Metamorphosis

Newman, Robert A.

doi:10.2307/1312173

Cited by 405 publications

(364 citation statements)

References 45 publications

Supporting

Mentioning

348

Contrasting

Unclassified

Order By: Relevance

“…Thus, developmental plasticity is likely to be especially important in adapting organisms to their current conditions experienced during ontogeny rather than potential future conditions that will be experienced in later life stages. My results are consistent with other studies of invertebrates (Crowl & Covich 1990;Gotthard 2008) and anurans (Newman 1992;Lind & Johansson 2007) which show that morphological plasticity has a near-term effect of reducing time to life-history transitions when environmental cues signal that fitness will be maximized by an earlier transition.…”

Section: Developmental Plasticity and Fledging D A Miller 1661supporting

confidence: 91%

Morphological plasticity reduces the effect of poor developmental conditions on fledging age in mourning doves

Miller

2010

Proc. R. Soc. B.

View full text Add to dashboard Cite

Developmental plasticity can be integral in adapting organisms to the environment experienced during growth. Adaptive plastic responses may be especially important in prioritizing development in response to stress during ontogeny. To evaluate this, I examined how developmental conditions for mourning doves related to early growth and how this affected fledging age, an important life-history transition for birds. The life history of mourning doves is consistent with strong selective pressure to minimize fledging age. Therefore, I predicted that in the face of nutritional stress associated with experimental brood-size increases, young would prioritize growth to structures that promote early fledging to reduce the effect of slowed overall growth on fledging age. Increasing brood size slowed overall structural growth of nestlings and affected the relative allocation of growth among different body parts. Total wing area was the best predictor of fledging age and individuals from larger broods had larger wings relative to overall body size. Although nestlings from larger broods fledged at later ages owing to slower overall growth, prioritization of wing growth reduced this effect by an estimated 1.6 days relative to the delay if plasticity among body parts had not occurred. This was an 11 per cent reduction in the predicted developmental time it took to reach this important life-history transition. Results demonstrate that preferential allocation to wing growth can affect the timing of this life-history transition and that morphological plasticity during development can have adaptive near-term effects during avian development.

show abstract

Section: Developmental Plasticity and Fledging D A Miller 1661supporting

confidence: 91%

Morphological plasticity reduces the effect of poor developmental conditions on fledging age in mourning doves

Miller

2010

Proc. R. Soc. B.

View full text Add to dashboard Cite

show abstract

“…Typically, pond-drying has been evaluated in larval amphibians, showing that many species have developmental plasticity that allows them to adapt by metamorphosing sooner. This comes at a potential cost to survival later, due to often smaller sizes post-metamorphosis [21]. Introducing a pesticide to amphibian communities experiencing the effects of pond-drying may alter the norm of reaction (as described in Newman [21]) to the natural stressor.…”

Section: Discussionmentioning

confidence: 99%

Effects of the herbicide imazapyr on juvenile Oregon spotted frogs

Yahnke¹,

Grue²,

Hayes³

et al. 2012

Enviro Toxic and Chemistry

View full text Add to dashboard Cite

Abstract-Conflict between native amphibians and aquatic weed management in the Pacific Northwest is rarely recognized because most native stillwater-breeding amphibian species move upland during summer, when herbicide application to control weeds in aquatic habitats typically occurs. However, aquatic weed management may pose a risk for aquatic species present in wetlands through the summer, such as the Oregon spotted frog (OSF, Rana pretiosa), a state endangered species in Washington. Acute toxicity of herbicides used to control aquatic weeds tends to be low, but the direct effects of herbicide tank mixes on OSFs have remained unexamined. We exposed juvenile OSFs to tank mixes of the herbicide imazapyr, a surfactant, and a marker dye in a 96-h static-renewal test. The tank mix was chosen because of its low toxicity to fish and its effectiveness in aquatic weed control. Concentrations were those associated with low-volume (3.5 L/ha) and high-volume (7.0 L/ha) applications of imazapyr and a clean-water control. Following exposure, frogs were reared for two months in clean water to identify potential latent effects on growth. Endpoints evaluated included feeding behavior, growth, and body and liver condition indices. We recorded no mortalities and found no significant differences for any end point between the herbicide-exposed and clean-water control frogs. The results suggest that imazapyr use in wetland restoration poses a low risk of direct toxic effects on juvenile OSFs. Environ. Toxicol. Chem. 2013;32:228-235. # 2012 SETAC

show abstract

“…Yellow dung flies are cold-adapted and this treatment reflects problems faced by S. stercoraria in nature where flies emerging on rainy days have to rely solely on fat reserves until the rain stops and they can hunt successfully. Development time has large fitness consequences in taxa inhabiting ephemeral habitats (Newman 1992). This is likely to be especially true in species like S. stercoraria where body size and development time are largely uncoupled (i.e.…”

Section: Introductionmentioning

confidence: 99%

Superior sperm competitors sire higher–quality young

Hosken

Garner

Tregenza

et al. 2003

Proc. R. Soc. Lond. B

120

View full text Add to dashboard Cite

The evolution of polyandry remains controversial. This is because, unlike males, in many cases multiple mating by females does not increase fecundity and inevitably involves some costs. As a result, a large number of indirect benefit models have been proposed to explain polyandry. One of these, the good sperm hypothesis, posits that high-quality males are better sperm competitors and sire higher-quality offspring. Hence, by mating multiply, females produce offspring of superior quality. Despite being potentially widely applicable across species, this idea has received little attention. In a laboratory experiment with yellow dung flies (Scathophaga stercoraria) we found that males that were more successful in sperm competition also had offspring that developed faster. There was no relationship between paternal success in sperm competition and the ability of offspring to survive post-emergence starvation. Since faster development times are likely to be advantageous in this species, our data provide some support for polyandry evolving as a means of producing higher-quality offspring via sperm competition.

show abstract

Adaptive Plasticity in Amphibian Metamorphosis

Cited by 405 publications

References 45 publications

Morphological plasticity reduces the effect of poor developmental conditions on fledging age in mourning doves

Morphological plasticity reduces the effect of poor developmental conditions on fledging age in mourning doves

Effects of the herbicide imazapyr on juvenile Oregon spotted frogs

Superior sperm competitors sire higher–quality young

Contact Info

Product

Resources

About