Interspecific Social Interactions and Breeding Success of the Frog<i>Rana latastei</i>: A Field Study

Ficetola, Gentile Francesco; Bernardi, Fiorenza De

doi:10.1111/j.1439-0310.2005.01089.x

Cited by 33 publications

(56 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Laboratory results from standardized environments can not always be extended to the field, where the environment is more variable and generally different from that of the laboratory (MCKENZIE 1996 ande.g. DE FOUNTAIN andHOPKIN 2004;STOOPS 2005;FICETOLA and BERNARDI 2005). Measures from laboratory studies on a particular trait may prevent any extrapolation to fitness in natural environment, which is not, in fact, very surprising.…”

Section: Comparison With Laboratory Experimentsmentioning

confidence: 99%

Resistance Gene Replacement in the Mosquito Culex pipiens: Fitness Estimation From Long-Term Cline Series

Labbé

Sidos²,

Raymond

et al. 2009

Genetics

View full text Add to dashboard Cite

How adaptation appears and is later refined by natural selection has been the object of intense theoretical work. However, the testing of these theories is limited by our ability to estimate the strength of natural selection in nature. Using a long-term cline series, we estimate the selection coefficients acting on different alleles at the same locus to analyze the allele replacement observed in the insecticide resistance gene Ester in the mosquito Culex pipiens in the Montpellier area, southern France. Our method allows us to accurately account for the resistance allele replacement observed in this area since 1986. A first resistance allele appeared early, which was replaced by a second resistance allele providing the same advantage but at a lower cost, itself being replaced by a third resistance allele with both higher advantage and cost. It shows that amelioration of the adaptation (here resistance to insecticide) through allele replacement was successively achieved by selection of first a generalist allele (i.e., with a low fitness variance across environments) and later a specialist allele (i.e., with a large fitness variance across environments). More generally, we discuss how precise estimates of the strength of selection obtained from field data help us understand the process of amelioration of adaptation.

show abstract

Section: Comparison With Laboratory Experimentsmentioning

confidence: 99%

Resistance Gene Replacement in the Mosquito Culex pipiens: Fitness Estimation From Long-Term Cline Series

Labbé

Sidos²,

Raymond

et al. 2009

Genetics

View full text Add to dashboard Cite

show abstract

“…Similar to resource competition, reproductive interference is density‐dependent (Hettyey and Pearman 2003) and in most cases asymmetric (Fujimoto et al 1996). It can affect population dynamics, abundance, habitat choice and distribution of species (Kuno 1992, Ficetola and De Bernardi 2005). It has been suggested that demographic displacement of one species caused by reproductive interference (sexual exclusion) is even more likely than competitive exclusion (Ribeiro and Spielman 1986, Kuno 1992, Hochkirch et al in press).…”

mentioning

confidence: 99%

Reproductive interference in two ground‐hopper species: testing hypotheses of coexistence in the field

Gröning¹,

Lücke²,

Finger³

et al. 2007

Oikos

View full text Add to dashboard Cite

Similar to resource competition, reproductive interference may hamper the coexistence of closely related species. Species that utilize similar signal channels during mate finding may face substantial fitness costs when they come into contact and demographic displacement of the inferior species (sexual exclusion) is a likely outcome of such interactions. The two ground-hopper species Tetrix ceperoi and Tetrix subulata broadly overlap in their ranges and general habitat requirements, but rarely co-occur on a local scale. Results from laboratory and field experiments suggest that this mosaic pattern of sympatry might be influenced by reproductive interference. Here, we examine the significance of sexual interactions for these species in the field and test hypotheses on mechanisms of coexistence. Our results show that heterospecific sexual interactions also occur under field conditions, but in contrast to the experiments T. ceperoi was not the inferior species. The number of male mating attempts of both species was strongly correlated with encounter frequencies. Males discriminated between the sexes but not between the species, suggesting an incomplete mate recognition system in both species. The analysis of microhabitat preferences and spatial distribution revealed that habitat partitioning is not a suitable mechanism of coexistence in this system. Instead, the costs of reproductive interference are substantially mitigated by different niche breadths leading to different degrees of aggregation. Despite a considerable niche overlap T. ceperoi displayed a stronger preference for bare ground and occurred more aggregated than T. subulata , which had a broader niche. These differences may reduce the frequencies of heterospecific encounters and interactions in the field. Our results demonstrate that coexistence in the presence of reproductive interference is comparable to resource competition, being strongly influenced by ecological traits of the involved species, such as niche breadth and dispersion pattern.

show abstract

“…repatriations best performed in permanent ponds where water permanence during all the breeding period allows the completion of the reproductive cycle. The positive effect on repatriation outcome of pond's shore incline might be related to the preference of the species for deep and permanent wetlands (Ficetola and De Bernardi, 2005b): shore incline may therefore be an effective predictor for depth (and also better than the actual measure of depth) since water levels in our study area are subjected to unpredictable fluctuations due to industrial and agricultural employ of water, as well as rainfall.…”

Section: Discussionmentioning

confidence: 99%

Factors affecting repatriation success of the endangered Italian agile frog (Rana latastei)

et al. 2008

View full text Add to dashboard Cite

Repatriations and translocations are among the most frequent actions deployed for conservation of amphibians all over the world. However, very few studies have analysed the effectiveness of these actions. The aims of this study were i) to measure the success of repatriations of Rana latastei carried out within a conservation project in Lombardy (Northern Italy) from 1999 to 2001, and ii) to analyse how the environmental factors affected repatriation success. Eighteen ponds were surveyed from February to April 2006, for an overall of 45 field surveys. Each pond was carefully checked for frogs and egg masses. We classified each pond as newly excavated or pre-existing according to habitat management actions and we measured 16 variables concerning micro-and macro-habitat characteristics, human disturbance and presence of predators. Rana latastei was found in 33.3% of monitored sites and the repatriation outcome of tadpole release did not differ between newly excavated and non managed ponds. Habitat variables influenced the success of repatriations, which increased in sites with higher percentage of woodlands. Finally, repatriation outcome was also negatively influenced by human disturbance and predator occurrence.

show abstract

Interspecific Social Interactions and Breeding Success of the FrogRana latastei: A Field Study

Cited by 33 publications

References 37 publications

Resistance Gene Replacement in the Mosquito Culex pipiens: Fitness Estimation From Long-Term Cline Series

Resistance Gene Replacement in the Mosquito Culex pipiens: Fitness Estimation From Long-Term Cline Series

Reproductive interference in two ground‐hopper species: testing hypotheses of coexistence in the field

Factors affecting repatriation success of the endangered Italian agile frog (Rana latastei)

Contact Info

Product

Resources

About