Effects of predator exposure on Hsp70 expression and survival in tadpoles of the Common Frog (Rana temporaria)

2011 ◽  
Vol 89 (12) ◽  
pp. 1249-1255 ◽  
Author(s):  
Jesper Givskov Sørensen ◽  
Volker Loeschcke ◽  
Juha Merilä ◽  
Anssi Laurila
Keyword(s):  
Predation Risk ◽  
Rana Temporaria ◽  
Cellular Level ◽  
Hsp70 Expression ◽  
Common Frog ◽  
Beneficial Effects ◽  
Prey Behavior ◽  
Frog Rana Temporaria ◽  
The Common ◽  
Free Ranging

Predator-induced changes in prey behavior and morphology are widespread, but little is known about physiological and cellular-level responses in prey in response to predation risk. We investigated whether predator (larvae of the dragonfly Aeshna Fabricius, 1775) presence elevated the expression level of heat-shock protein 70 (Hsp70)—a commonly found response to stress—in tadpoles of the Common Frog ( Rana temporaria L., 1758). In another experiment, we tested the survival of tadpoles in the presence of a free-ranging predator. Prior to this encounter, the tadpoles were exposed to either an Hsp-inducing environmental stress in the form of heat (31 °C) or to predator cues from a caged predator. We found no evidence for increased Hsp70 expression in tadpoles either in the presence of fed or starved predators. We did not find any effects of prior exposure to neither heat nor predator presence on survival at the end of experiment. Our results do not point to either Hsp70-mediated effect of predator-induced responses or to beneficial effects of the stress response on survival under predation risk.

Complex patterns of geographic variation in heat tolerance and Hsp70 expression levels in the common frog Rana temporaria

2009 ◽  
Vol 34 (1) ◽  
pp. 49-54 ◽  
Author(s):  
Jesper Givskov Sørensen ◽  
Minna Pekkonen ◽  
Beatrice Lindgren ◽  
Volker Loeschcke ◽  
Anssi Laurila ◽  
...  
Keyword(s):  
Geographic Variation ◽  
Heat Tolerance ◽  
Rana Temporaria ◽  
Hsp70 Expression ◽  
Common Frog ◽  
Expression Levels ◽  
Frog Rana Temporaria ◽  
The Common ◽  
Complex Patterns

Small woods positively influence the occurrence and abundance of the common frog (Rana temporaria) in a traditional farming landscape

2015 ◽  
Vol 36 (4) ◽  
pp. 417-424 ◽  
Author(s):  
Alexandre Boissinot ◽  
Pierre Grillet ◽  
Aurélien Besnard ◽  
Olivier Lourdais
Keyword(s):  
Western Europe ◽  
Rana Temporaria ◽  
Common Frog ◽  
Traditional Farming ◽  
Critical Determinant ◽  
Southern Margin ◽  
Frog Species ◽  
Frog Rana Temporaria ◽  
The Common ◽  
Extensive Farming

Traditional farming landscape in western Europe is made of a complex mosaic of pastures, cultures, ponds and hedgerows connected with woods. Previous observations in the common frog species suggest that lowland populations are closely associated to wood cover and our aim was to test the validity of this assumption. We studied common frog occurrence and abundance in western central France (Deux-Sèvres department) close to the southern margin of lowland distribution. Our results pointed out that the proportion of woods surface around sampled areas (1 ha) was a critical determinant of common frog presence and abundance. Extensive farming, which maintains a mosaic of small woods, may provide a robust conservation tool for this species.

scholarly journals VIII. On the structure and development of the skull of the common frog ( Rana temporaria , L.)

1871 ◽  
Vol 161 ◽  
pp. 137-211 ◽  
Keyword(s):  
Rana Temporaria ◽  
The Other ◽  
Common Frog ◽  
Frog Rana Temporaria ◽  
The Subject ◽  
The Common ◽  
Working Out

Since the sending in of my last communication, that on the Skull of the Fowl, our knowledge of the morphology of the facial arches has been very greatly extended by Professor Huxley’s invaluable paper “On the Representatives of the Malleus and the Incus of the Mammalia in the other Vertebrata” (see Proc. Zool. Soc. May 1869, pp. 391-407). After comparing the components of the mandibular and hyoid arches in an extended series of vertebrate types, the author concludes his paper by saying (p. 406), “in the higher Amphibia changes of a most remarkable kind take place, of which I do not now propose to speak, as my friend Mr. Parker is engaged in working out that part of the subject.”

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