The adaptive significance of an environmentally-cued developmental switch in an anuran tadpole

  title={The adaptive significance of an environmentally-cued developmental switch in an anuran tadpole},
  author={David W. Pfennig},
  • D. Pfennig
  • Published 1 November 1990
  • Biology, Environmental Science
  • Oecologia
SummaryThis study investigated the proximate basis of bimodally-distributed, environmentally-induced variation that occurs in natural populations of spade-foot toad tadpoles (Scaphiopus multiplicatus). Most individuals in most populations occur as a small, slowly-developing omnivore morph. In some of these same populations, a varying number of individuals occur as a large, rapidly-developing carnivore morph (Pfennig 1989). Censuses of 37 different natural ponds revealed that the frequency of… 

Growth and foraging consequences of facultative paedomorphosis in the tiger salamander,Ambystoma tigrinum nebulosum

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Adaptive value of a predatory mouth-form in a dimorphic nematode

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Reassessment of the environmental model of developmental polyphenism in spadefoot toad tadpoles

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Evolutionary and developmental considerations of the diet and gut morphology in ceratophryid tadpoles (Anura)

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  • H. MichimaeM. Wakahara
  • Environmental Science, Biology
    Evolution; international journal of organic evolution
  • 2002
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Dead Spadefoot Tadpoles Adaptively Modify Development in Future Generations: A Novel Form of Nongenetic Inheritance?

A possible novel form of nongenetic inheritance in the tadpoles of the Mexican Spadefoot is described: the transmission of information about the environment from dead individuals to living individuals of a later cohort or generation to mediate adaptive evolution when populations experience different environmental conditions.

Threshold evolution in exotic populations of a polyphenic beetle

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Antipredator behavior promotes diversification of feeding strategies.

It is hypothesized that the recurrent expression of such behaviors in sympatric populations of Sc.




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Effects of density and predation on Scaphiopus couchi tadpoles in desert ponds

SummaryThe effects of density on growth and development of Scaphiopus couchi tadpoles in desert ponds were investigated, and sources of mortality over a three-year period were documented. In 16 of

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Predator-Induced Life-History Shifts in a Freshwater Snail

The snail Physella virgata virGata, a widely distributed freshwater pulmonate, was observed to change its life-history characteristics in the presence of the crayfish Orconectes virilis in spring-fed Oklahoma streams, indicating that the life histories of these snails are phenotypically plastic.

Effect of Food and Density on Development of Typical and Cannibalistic Salamander Larvae in Ambystoma tigrinum nebulosum

The results suggest the typical and cannibalistic larvae which occur in some populations of Ambystoma tigrinum nebulosum is an environmentally induced developmental polymorphism that results from some individuals responding to the environment differently than others.


  • A. Meyer
  • Biology, Environmental Science
    Evolution; international journal of organic evolution
  • 1987
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The results demonstrate that environmental control of development requires a cost to the stress-tolerant morphology, and suggest that a mixture of genetic and environmental control is an evolutionarily stable state under some conditions.

Paedomorphosis in Ambystoma Talpoideum: Effects of Density, Food, and Pond Drying

Differences in en- vironmental factors among populations can affect the life-history pathways of individuals and lead to a predominance of paedomorphosis in permanent aquatic habitats with fa- vorable growth environments.

Dimorphism in Larval Mouthparts in Spadefoot Toads of the Scaphiopus hammondi Group

The background of the problem of Buccal dimorphism in larvae of western spadefoots is reviewed and some of the lines of investigation that may help to provide a satisfactory solution are discussed.

Plasticity in the fine timing of metamorphosis in tadpoles of the hylid frog

A study of the survival of embryos, tadpoles, and adults of the frogs Rana aurora aurora and Ranapretiosa pretiosa sympatric in southwestern British Columbia shows clear trends in temperature tolerance and rates of development.