Variations in life-history traits in the common frog Rana temporaria (Amphibia: Anura): a literature review and new data from the French Alps

Miaud, Claude; Guyetant, R.; Elmberg, Johan

doi:10.1017/s0952836999009061

Cited by 80 publications

(119 citation statements)

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“…The relationships found between variation in body size parameters of H. labialis females and variation in reproductive output agree with those described for several other anuran species (Crump 1974;Kuramoto 1978;Cummins 1986;Berven 1988;Jørgensen 1992;Grosse 1994;Sinsch 1998;but see Ryser 1996;Martin and Miaud 1999;Miaud et al 1999). Unlike other anuran species (Hemmer and Kadel 1971;Berven 1988;Ryser 1996), age differences between H. labialis females do not explain variation in clutch characteristics, given that during a 4.5-year laboratory study, aging females continued to produce large and heavy clutches until their last oviposition before death.…”

Section: Discussionsupporting

confidence: 84%

Variation and trade-off in reproductive output of the Andean frog Hyla labialis

Lüddecke

2002

Oecologia

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I analysed variation in number and size of eggs in association with variation in body size of Hyla labialis females from three altitudinally widely separated populations in the Colombian Andes. Females at 3,500 m were significantly larger and heavier than those at 2,700 m, which in turn were larger and heavier than those at 2,000 m. After accounting for interpopulational differences in body size, clutch size (i.e. number of eggs) and egg size differed significantly between populations, but clutch mass did not. At 3,500 m, large relative clutch mass tended to be associated with larger eggs, whereas at lower altitudes it was associated with relatively larger clutch size. Within each population, females showed a significant trade-off between clutch size and egg size, even though relative clutch mass varied substantially and a clutch rarely used up the carrying capacity of their body cavity. At 3,500 m, comparisons between the early and late breeding season within a year suggested that climate fluctuations may play a role in reproductive-output variation within a population. Laboratory-kept females in a high somatic condition after spawning laid larger clutches in the next breeding event, but the trade-off persisted despite ad libitum food supply. Comparisons between field and laboratory suggest that limits to reproductive output were due to physiological, but not morphological restrictions. Therefore, the trade-off is better explained by energy limitation for egg growth depending on clutch size, than by the body cavity limitation hypothesis.

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Section: Discussionsupporting

confidence: 84%

Variation and trade-off in reproductive output of the Andean frog Hyla labialis

Lüddecke

2002

Oecologia

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“…Eggs were maintained in the laboratory until hatching and then tadpoles were stored in 90°ethanol. The breeding population sizes (estimated by counting clutches and assuming that each female lays one clutch per year; Miaud et al 1999) varied from less than 20 to more than 2000 breeding females per patch (Table 1).…”

Section: Sampling Sitementioning

confidence: 99%

“…One of them is that there has been extensive gene flow between local populations (breeding patches) in the past leading to extensive admixture. The time elapsed between the constructions of highways and road traffic level suppressing frog dispersal (about 30 years) is short given that the generation length of the common frog is 3-4 years (Miaud et al 1999). The effect of fragmentation on genetic structure is more readily detected for species with shorter generation lengths.…”

Section: Individual Dispersal and Landscape Structurementioning

confidence: 99%

Combining demography and genetic analysis to assess the population structure of an amphibian in a human-dominated landscape

et al. 2010

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In this article, we applied demographic and genetic approaches to assess how landscape features influence dispersal patterns and genetic structure of the common frog Rana temporaria in a landscape where anthropogenic perturbations are pervasive (urbanization and roads). We used a combination of GIS methods that integrate radiotracking and landscape configuration data, and simulation techniques in order to estimate the potential dispersal area around breeding patches. Additionally, genetic data provided indirect measures of dispersal and allowed to characterise the spatial genetic structure of ponds and the patterns of gene flow across the landscape. Although demographic simulations predicted six distinct groups of habitat patches within which movement can occur, genetic analyses suggested a different configuration. More precisely, BAPS5 spatial clustering method with ponds as the analysis unit detected five spatial clusters. Individual-based analyses were not able to detect significant genetic structure.We argue that (1) taking into account that each individual breeds in specific breeding patch allowed for better explanation of population functioning, (2) the discrepancy between direct (radiotracking) and indirect (genetic) estimates of subpopulations (breeding patches) is due to a recent landscape fragmentation (e.g. traffic increase). We discuss the future of this population in the face of increasing landscape fragmentation, focusing on the need for combining demographic and genetic approaches when evaluating the conservation status of population subjected to rapid landscape changes.

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“…To identify cases of LAG resorption, we calculated the diameters of the innermost and the other visible LAGs; LAG resorption was indicated when the diameter of innermost visible LAG was [2 SD greater than the group mean (Sagor et al 1998). Although LAG resorption is believed to only minimally influence age determination (Gibbons and McCarthy 1983;Miaud et al 1999), we corrected two specimens which were suspected to have resorption phenomena. Furthermore, the sharpness of LAGs may also influence the estimation of frog age; we thus removed three specimens which had faint LAGs.…”

Section: Laboratory Age Estimationmentioning

confidence: 99%

Geographical variation in body size and sexual size dimorphism of introduced American bullfrogs in southwestern China

McGarrity³

2009

Biol Invasions

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Invasive species often exhibit geographical variations in life history traits that may allow them to successfully invade different environments. We investigated geographical variation in body size and sexual size dimorphism (SSD) of invasive bullfrogs in southwestern China, by sampling two breeding populations (descendants of a single source population) inhabiting sites at low (1,412 m, Shiping) and high (2,692 m, Luguhu) altitudes. Both populations exhibited significant SSD, with females larger than males. At high altitude, mean body size of both sexes and the degree of SSD were significantly reduced; the reduction in mean body size with increasing altitude was more pronounced in females, although not significantly so. Female bullfrogs also showed a significant decrease in average age at high altitude that may be a major factor related to this pattern; average age of male bullfrogs did not vary significantly with altitude. Growth rate of both sexes was also lower at high altitude. Our results provide the first evidence that introduced bullfrog's exhibit geographical variation in morphology in invaded areas in response to different environments, likely due to changes in climate. Additional research is required to determine the mechanism of this variation (i.e., physiological or developmental plasticity, mortality rate, selective pressure) and most importantly, to evaluate the potential for variation in the impacts of introduced bullfrogs on native ecosystems in China.

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Variations in life-history traits in the common frog Rana temporaria (Amphibia: Anura): a literature review and new data from the French Alps

Cited by 80 publications

References 0 publications

Variation and trade-off in reproductive output of the Andean frog Hyla labialis

Variation and trade-off in reproductive output of the Andean frog Hyla labialis

Combining demography and genetic analysis to assess the population structure of an amphibian in a human-dominated landscape

Geographical variation in body size and sexual size dimorphism of introduced American bullfrogs in southwestern China

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