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Journal articles on the topic 'Lessonae'

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Author: Grafiati

Published: 30 May 2022

Last updated: 31 May 2022

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1

Tunner, Heinz. "Evidence for genomic imprinting in unisexual triploid hybrid frogs." Amphibia-Reptilia 21, no. 2 (2000): 135–41. http://dx.doi.org/10.1163/156853800507327.

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AbstractThe hybridogenetic hybrid R. esculenta arose through hybridization between R. ridibunda and R. lessonae. Usually hybrids are diploid. In some populations, however, they are triploid, with one genome from R. ridibunda and two genomes from R. lessonae (LLR-genotype). These triploids live with and mate with R. ridibunda. Thus, hybrids and R. ridibunda are sexual competitors. I studied the influence of the additional lessonae genome (dosage effect) on the morphology, biology and the electrophoretic pattern of two polymorphic proteins of triploid hybrids. The two lessonae genomes are not expressed according to a simple dose effect. Genetic information of the lessonae genome is obviously switched off because it would increase the dissimilarity between triploids and R. ridibunda, the parental species upon which reproduction of hybrids depends. Imprinting can account for the observed unusual pattern of inheritance.

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2

RAGGHIANTI, MATILDE, STEFANIA BUCCI, SILVIA MARRACCI, CLAUDIO CASOLA, GIORGIO MANCINO, HANSJÜRG HOTZ, GASTON-DENIS GUEX, JÖRG PLÖTNER, and THOMAS UZZELL. "Gametogenesis of intergroup hybrids of hemiclonal frogs." Genetical Research 89, no. 1 (February 2007): 39–45. http://dx.doi.org/10.1017/s0016672307008610.

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European water frog hybrids Rana esculenta (R. ridibunda×R. lessonae) reproduce hemiclonally, by hybridogenesis: in the germ line they exclude the genome of one parental species and produce haploid gametes with an unrecombined genome of the other parental species. In the widespread L-E population system, both sexes of hybrids (E) coexist with R. lessonae (L). They exclude the lessonae genome and produce ridibunda gametes. In the R-E system, hybrid males coexist with R. ridibunda (R); they exclude either their ridibunda or their lessonae genome and produce sperm with a lessonae or with a ridibunda genome or a mixture of both kinds of sperm. We examined 13 male offspring, 12 of which were from crosses between L-E system and R-E system frogs. All were somatically hybrid. With one exception, they excluded the lessonae genome in the germ line and subsequently endoreduplicated the ridibunda genome. Spermatogonial metaphases contained a haploid or a diploid number of ridibunda chromosomes, identified through in situ hybridization to a satellite DNA marker, and by spermatocyte I metaphases containing a haploid number of ridibunda bivalents. The exception, an F1 hybrid between L-E system R. lessonae and R-E system R. ridibunda, was not hybridogenetic, showed no genome exclusion, and evidenced a disturbed gametogenesis resulting from the combination of two heterospecific genomes. None of the hybridogenetic hybrids showed any cell lines excluding the ridibunda genome, the pattern most frequent in hybrids of the R-E system, unique to that system, and essential for its persistence. A particular combination of R-E system lessonae and R-E system ridibunda genomes seems necessary to induce the R-E system type of hemiclonal gametogenesis.

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3

Gleed-Owen, C. P. "Subfossil records of Rana cf. lessonae, Rana arvalis and Rana cf. dalmatina from Middle Saxon (c. 600-950 AD) deposits in eastern England: evidence for native status." Amphibia-Reptilia 21, no. 1 (2000): 57–65. http://dx.doi.org/10.1163/156853800507273.

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AbstractOwing to debate over the possible native status of Rana lessonae in England, a zooarchaeological survey was aimed at finding remains of R. lessonae older than known introductions. One ilium of R. cf. lessonae has been identified from a Middle Saxon site in Lincolnshire (c. 600-950 AD), and ilia of R. arvalis and R. cf. dalmatina show that these species were also present in England during Saxon times.

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4

Berger, Leszek, and Maria Ogielska. "Spontaneous haploid-triploid mosaicism in the progeny of a Rana kI. esculenta female and Rana lessonae males." Amphibia-Reptilia 15, no. 2 (1994): 143–52. http://dx.doi.org/10.1163/156853894x00254.

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AbstractA female Rana kl. esculenta was crossed with three different R. lessonae males. Three froglets with unexpected phenotypes appeared. Two of them were chimerae with one side of the body of lessonae, and the other of escutenta phenotype, and one displayed lessonae, instead of the expected esculenta, phenotype. Blood of three individuals was composed of small haploid and large triploid erythrocytes. These results indicate that the froglets were 1n/3n mosaics.

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5

Voituron, Yann, Pierre Joly, Michel Eugène, and Hervé Barré. "Freezing tolerance of the European water frogs: the good, the bad, and the ugly." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 288, no. 6 (June 2005): R1563—R1570. http://dx.doi.org/10.1152/ajpregu.00711.2004.

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Survival and some physiological responses to freezing were investigated in three European water frogs ( Rana lessonae, Rana ridibunda, and their hybridogen Rana esculenta). The three species exhibited different survival times during freezing (from 10 h for R. lessonae to 20 h for R. ridibunda). The time courses of percent water frozen were similar; however, because of the huge differences in body mass among species (from 10 g for Rana lessonae to nearly 100 g for Rana ridibunda), the ice mass accumulation rate varied markedly (from 0.75 ± 0.12 to 1.43 ± 0.11 g ice/h, respectively) and was lowest in the terrestrial hibernator Rana lessonae. The hybrid Rana esculenta exhibited an intermediate response between the two parental species; furthermore, within-species correlation existed between body mass and ice mass accumulation rates, suggesting the occurrence of subpopulations in this species (0.84 ± 0.08 g ice/h for small R. esculenta and 1.78 ± 0.09 g ice/h for large ones). Biochemical analyses showed accumulation of blood glucose and lactate, liver glucose (originating from glycogen), and liver alanine in Rana lessonae and Rana esculenta but not in Rana ridibunda in response to freezing. The variation of freeze tolerance between these three closely related species could bring understanding to the physiological processes involved in the evolution of freeze tolerance in vertebrates.

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6

Krizmanic, I. I. "Water frogs (Rana esculenta complex) in Serbia: Morphological data." Archives of Biological Sciences 60, no. 3 (2008): 449–57. http://dx.doi.org/10.2298/abs0803449k.

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The main purpose of this paper was to estimate morphometric variability of the water frog (Rana synklepton esculenta complex) population in Serbia. Altogether, 396 water frogs were collected at 15 localities in Serbia and analyzed using principal components for 18 selected indices, in addition to which correspondent analyses were conducted for 30 qualitative external morphological traits. The results showed that the population samples were heterogeneous and included three separate forms (Rana ridibunda, Rana lessonae and Rana kl. esculenta). Significant interspecific differ?ences were found between R. ridibunda and R. lessonae, which are clearly distinct from each other. Rana kl. esculenta specimens were in an intermediate position between R. ridibunda and R. lessonae, with values more similar to the R. ridibunda parent species.

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7

Berger, Leszek, Maciej Pabijan, Mariusz Rybacki, and Elzbieta Czarniewska. "Large eggs and ploidy of green frog populations in Central Europe." Amphibia-Reptilia 32, no. 2 (2011): 149–58. http://dx.doi.org/10.1163/017353710x546495.

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AbstractGreen frogs of Central Europe consist of three taxa: Pelophylax ridibundus, P. lessonae and their natural hybridogenetic hybrid, P. esculentus, which forms as a rule mixed populations with its parental species. We examined 659 095 eggs from P. ridibundus (48 females), P. lessonae (133 females) and P. esculentus (170 females) originating from 39 populations in Austria, Denmark, Germany and Poland. Some females of each taxon laid eggs that fell into discrete size classes (small, medium and large). Large eggs were mostly diploid gametes from which triploids developed. They were found in P. esculentus (25 233 large eggs in 152 spawns), P. lessonae (81 in 10 spawns) and P. ridibundus (7 in 3 spawns). The main purpose of the paper was to demonstrate that the numbers of large eggs were clearly associated with triploid P. esculentus frogs. In pure hybrid (esculentus) populations large eggs comprised between 2.44-40.96% of all ova, while triploid adult frogs constituted between 13.9-73.2% of all individuals, in mixed ridibundus-esculentus populations the large eggs and triploid frogs ranged between 0.85-36.6% and 9.2-56.2%, respectively. However, in mixed lessonae-esculentus populations large eggs comprised only 1.74% of the spawns, whereas triploid frogs represented 2.1% of the adults in the population.

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8

Peter, Anna-Katherina Holenweg. "Survival in adults of the water frogRana lessonaeand its hybridogenetic associateRana esculenta." Canadian Journal of Zoology 79, no. 4 (April 1, 2001): 652–61. http://dx.doi.org/10.1139/z01-019.

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Using recent developments in capturemarkrecapture modelling, I analysed survival rates of adults of two species of water frogs, the parent species Rana lessonae and its sexual parasite, the hybrid Rana esculenta. Frogs were caught in four different breeding ponds between 1995 and 1998 and the effects of genotype (= species), sex, pond, and time on survival rates and recapture probabilities were tested. Survival rates were consistently higher in R. lessonae than in R. esculenta. Recapture probability was higher in males than in females. In both species, survival rates were constant during spring and summer and similar in all years of the investigation, average monthly survival rates being lower than those during autumn and winter. The variation in annual survival rates (7284% for R. lessonae and 5370% for R. esculenta) is probably caused by differences in winter survival rates. Capturemarkrecapture models cannot separate mortality and emigration and hence usually underestimate survival rates. To eliminate this source of error, I quantified emigration, which ranged from 0 to 29% at the four ponds. After correcting for these emigration rates, I found no differences in survival rates among the four ponds. The overall high survival rates of adult R. lessonae compared with R. esculenta partially compensate for the hybrid's initial reproductive advantage in terms of mating, fertility, and larval development and, hence, contribute to stabilising mixed populations.

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9

Jośko, Paulina, and Maciej Pabijan. "Recent shifts in taxonomic compositions of water frog populations (Anura: Pelophylax) inhabiting fish ponds in southern Poland." Amphibia-Reptilia 42, no. 1 (September 29, 2020): 59–72. http://dx.doi.org/10.1163/15685381-bja10031.

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Abstract In Central Europe, water frog species coexist in assemblages consisting of Pelophylax lessonae, P. ridibundus and their hybridogenetic hybrid, P. esculentus. Population compositions are poorly understood, partly because of difficulties in distinguishing hybrids from parentals by means of morphology alone. Environmental change and human-mediated, cryptic introductions of non-native water frog species have modified local assemblages. In this contribution we examined the structure of nine water frog populations inhabiting mostly large fish ponds in the Upper Vistula river valley of southern Poland using morphology and PCR-based genotyping of single loci in the nuclear and mitochondrial genomes. We found four different water frog population compositions: two with only P. ridibundus, one composed of P. lessonae and P. esculentus, three with P. ridibundus and P. esculentus, and three containing all three water frog taxa. Historical data show that the area was previously inhabited by lessonae-esculentus populations. We propose that both ecological and genetic replacement by expanding P. ridibundus may have contributed to the decline of the former. Overall, 18% of P. ridibundus frogs contained introgressed P. lessonae mtDNA, however, the frequency of introgressants was most pronounced in populations with a high proportion of P. esculentus. Exotic water frogs were not detected in the study area. Our results bear significance for water frog population dynamics and conservation in Central Europe and highlight the importance of long-term monitoring for the detection of changes in population composition in these amphibians.

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10

Schneider, Hans, and Nasr Mahmoud Mohamad Radwan. "Social behaviour, call repertory and variation in the calls of the pool frog, Rana lessonae (Anura: Ranidae)." Amphibia-Reptilia 9, no. 4 (1988): 329–51. http://dx.doi.org/10.1163/156853888x00017.

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AbstractAt a pond in Kottenforst, Bonn, West Germany, the calling period of the water frog Rana lessonae began on the first of May and ended by the end of June, 1983. The population is of the mixed type: 80-85 % of the individuals are classified as R. lessonae, the rest as R. esculenta. The reproductive period is subdivided into 3 successive phases: pre-spawning, spawning and post-spawning. Various exogenous factors, such as temperature, rainfall and sunlight, influence the reproductive period, and they particularly affect calling activity. The male frogs do not produce mating calls when the water temperature is below 14°C, or above 26°C. Female frogs prefer sunny places in the water during the spawning phase. Sexual activity is more intense in male R. lessonae than in male R. esculenta. Medium- and large-size male R. lessonae are more successful than small males in choosing suitable territories and in maintaining of amplexus with females. Male R. lessonae give four basic types of calls-mating call, two territorial calls and release call-and in addition two transitional calls. The basic types are given throughout the calling period, whereas the transitional calls are not. An increase in water temperature induces a decrease in call duration, intercall interval and pulse-group duration of the mating call. On the other hand, the frequencies and the repetition rate of the pulse groups are raised. Similarly, the duration of both territorial calls decreases at higher water temperatures, whereas their dominant frequencies are subjected to a notable increase. Body size has a prominent effect on the mating call. The number of pulses per pulse group and the different frequencies of the call decrease with increasing male body length. The lower pitch in the mating call produced by medium- and large-size males is assumed to play a role in their mating-success. The repetition rate of pulses and the dominant frequency in the territorial calls decrease as the body size of the frogs increases.

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11

Rastegar-Pouyani, Nasrullah. "Taxonomic status of Trapelus ruderatus (Olivier) and T. persicus (Blanford), and validity of T. lessonae (De Filippi)." Amphibia-Reptilia 21, no. 1 (2000): 91–102. http://dx.doi.org/10.1163/156853800507309.

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AbstractThe systematic status of the ground agamids (conventional) Trapelus ruderatus and Trapelus persicus is re-evaluated based on material collected by the author on the Iranian Plateau and material from various museum collections, including the type specimens of Trapelus ruderatus (Olivier), T. megalonyx Günther, T. lessonae (De Filippi), T. persicus (Blanford) and T. ruderatus baluchianus (Smith). In conclusion, the holotype of Trapelus ruderatus is a subadult (conventional) T. persicus and that of T. lessonae is a typical (conventional) T. ruderatus ruderatus. Furthermore, T. megalonyx is a well-established species and T. r. baluchianus is not a valid taxonomic entity, being a junior synonym of T. megalonyx. So, some major nomenclatural changes are inevitable: Since T. lessonae is the oldest available name, it is revived for all populations of the (conventional) T. r. ruderatus, and the specific name “ruderatus” is, in turn, assigned for all populations of the (conventional) T. persicus (because of priority). Thus, the specific name “persicus” comes under the synonymy of “ruderatus” and is no longer available.

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12

CHIKHLYAEV, IGOR V., ALEXANDER B. RUCHIN, and ALEXANDER I. FAYZULIN. "Short communication: An overview of the trematodes fauna of pool frog Pelophylax lessonae (Camerano, 1882) in the Volga Basin, Russia: 1. Adult stages." Nusantara Bioscience 10, no. 4 (April 2, 2019): 256–62. http://dx.doi.org/10.13057/nusbiosci/n100410.

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Abstract. Chikhlyaev IV, Ruchin AB, Fayzulin AI. 2018. Short communication: An overview of the trematodes fauna of pool frog Pelophylax lessonae (Camerano, 1882) in the Volga Basin, Russia: 1. Adult stages. Nusantara Bioscience 10: 256-262. The paper presents data on fauna of trematodes of a pool frog Pelophylax lessonae (Camerano, 1882) from 13 regions of the Volga basin (Russia). It consolidates data from different authors over the past 80 years, supplemented by our own research results. There are authentically known findings of 19 trematodes species at an adult stage of development. Three species of trematodes make the basis of helminth fauna: Pneumonoeces variegatus, Opisthioglyphe ranae and Diplodiscus subclavatus. By all species of helminths the following data are provided: taxonomic position, localization, area of detection, biology, definitive hosts, geographic distribution and the degree host-specificity.

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13

Călin, Tesio, and Cogălniceanu Dan. "On the presence of Rana lessonae in Rumania." Amphibia-Reptilia 14, no. 1 (1993): 90–93. http://dx.doi.org/10.1163/156853893x00237.

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14

Gubányi, A., and Z. Korsós. "Morphological analysis of two Hungarian water frog (Rana lessonae-esculenta) populations." Amphibia-Reptilia 13, no. 3 (1992): 235–42. http://dx.doi.org/10.1163/156853892x00445.

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AbstractTwo water frog populations, Rana lessonae-esculenta systems, have been studied in Hungary from the morphological point of view. Multivariate analyses of selected morphological measurements based on biochemical identification of the species provide two ratios as possible key characters for determination of the two forms.

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15

CHIKHLYAEV, IGOR V., ALEXANDER B. RUCHIN, and ALEXANDER I. FAYZULIN. "Short communication: An overview of the trematodes fauna of pool frog Pelophylax lessonae (Camerano, 1882) in the Volga Basin, Russia: 2. Larval stages." Nusantara Bioscience 11, no. 1 (May 15, 2019): 106–11. http://dx.doi.org/10.13057/nusbiosci/n110118.

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Abstract. Chikhlyaev IV, Ruchin AB, Fayzulin AI. 2019. Short communication: An overview of the trematodes fauna of the pool frog Pelophylax lessonae (Camerano, 1882) in the Volga Basin, Russia: 2. Larval stages. Nusantara Bioscience 11: 106-111. This paper presents data on the trematodes fauna of the pool frog Pelophylax lessonae (Camerano, 1882) from 13 regions of the Volga Basin. It consolidates data from different authors over the past 30 years, supplemented by our own research results. There are authentically known findings of 10 trematodes species at the larval stage of development. The species Codonocephalus urniger (Rudolphi, 1819), mtc., Neodiplostomum spathoides Dubois, 1937, mtc. and Pharyngostomum cordatum (Diesing, 1850), mtc. have been observed for the first time in the given host on the territory of Russia and Volga basin. For each species of trematodes, there is the following information is included: taxonomic position, localization, area of detection, biology, definitive hosts, geographic distribution and degree of host-specificity.

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16

Suriadna, N. M., G. I. Mykytynets, M. Pupiņš, and V. Y. Gasso. "Population systems of Eurasian water frogs (Pelophylax) in the south of Ukraine." Biosystems Diversity 28, no. 2 (May 30, 2020): 154–62. http://dx.doi.org/10.15421/012021.

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Ecological and evolutionary consequences of population-genetic processes that occur because of natural cross-species hybridization can show mechanisms of overcoming the reproductive barrier and obtaining the species status by a hybrid taxon. This is clearly seen in the population systems of Eurasian water frogs – Pelophylax esculentus complex. The P. esculentus (E) hybrid usually discards one of the parental genomes of P. lessonae (L) or P. ridibundus (R) and reproduces semi-clonally. The genetic structure and direction of gene flows precisely depend on the type and distribution of mixed or pure population systems of water frogs. Three population systems in the south of Ukraine were identified and confirmed as RR, RE and REL. The populations of P. ridibundus are most common (76.2%). A mixed population systems of P. ridibundus and P. esculentus (20.0%) are concentrated in the floodplains of large rivers where triploids were found and the unisexual hybrids (1.0♂ : 0.1♀) were proved. Parent species populations having different ploidy of P. esculentus such as 3n and for the first time 4n were found. A mixed system of three taxa (REL) is rare (3.8%) and locally concentrated in the lower Danube and Dnieper with the smallest proportion of P. lessonae. We did not find populations of P. lessonae (LL), P. esculentus (EE, very rare system of hybrids only), and two mixed populations of parental species RL and semi-clonal LE in the south of Ukraine, but they are known for northern areas. The high number of P. ridibundus tends to decrease; the scarce P. esculentus and the extremely rare P. lessonae require special conservation measures. P. ridibundus (RR) occupies a wide range of diverse natural, permanent, temporary, coastal, continental, and artificial freshwater bodies, including synanthropic ecosystems. Mixed population systems inhabit willow and poplar forests in the floodplains of large rivers. In the south of Ukraine rare and isolated populations of the water frogs occurring outside the main range can be relict. Biotopic preferences, ratio and number of constituent taxa are crucial for an adequate assessment of biological (taxonomic) diversity and development of an appropriate strategy for the population systems’ conservation. Such characteristics as unisexuality of hybrids, their spreading patterns, specific sex structure and ploidy in different population systems of the P. esculentus complex contribute to the understanding of the hybridogenetic dynamics; produce new tendencies of becoming independent hybridogenous taxa and emergence of new evolutionary relationships.

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17

JOLY, P., V. GUESDON, E. FROMONT, S. PLENET, O. GROLET, J. F. GUEGAN, S. HURTREZ-BOUSSES, F. THOMAS, and F. RENAUD. "Heterozygosity and parasite intensity: lung parasites in the water frog hybridization complex." Parasitology 135, no. 1 (October 2, 2007): 95–104. http://dx.doi.org/10.1017/s0031182007003599.

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SUMMARYIn hybridogenetic systems, hybrid individuals are fully heterozygous because one of the parental genomes is discarded from the germinal line before meiosis. Such systems offer the opportunity to investigate the influence of heterozygosity on susceptibility to parasites. We studied the intensity of lung parasites (the roundwormRhabdias bufomisand the flukeHaplometra cylindracea) in 3 populations of water frogs of theRana lessonae-esculentacomplex in eastern France. In these mixed populations, hybrid frogs (R. esculenta) outnumbered parental ones (R. lessonae). Despite variation in parasite intensity and demographic variability among populations, the relationship between host age and intensity of parasitism suggests a higher susceptibility in parentals than in hybrids. Mortality is probably enhanced by lung parasites in parental frogs. On the other hand, while parental frogs harboured higher numbers ofH. cylindraceathan hybrid frogs, the latter had higher numbers ofR. bufonis. Despite such discrepancies, these results support the hybrid resistance hypothesis, although other factors, such as differences in body size, age-related immunity, differential exposure risks and hemiclonal selection, could also contribute to the observed patterns of infection.

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18

Vinogradov, A. E., L. J. Borkin, R. Günther, and J. M. Rosanov. "Genome elimination in diploid and triploid Rana esculenta males: cytological evidence from DNA flow cytometry." Genome 33, no. 5 (October 1, 1990): 619–27. http://dx.doi.org/10.1139/g90-092.

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Cytological aspects of hemiclonal (meroclonal) inheritance in diploid and triploid males of the hybridogenetic frog Rana esculenta (Rana ridibunda × Rana lessonae) have been studied by DNA flow cytometry. The fact that the R. ridibunda genome contains 16% more DNA than the R. lessonae genome provides the ability to discern cells containing genomes of any species from the water-frog complex under study. Data are presented showing that elimination of the R. ridibunda genome occurs in hybridogenetic males from certain populations. In triploid males, the cytogenetic mechanism of hemiclonal inheritance is simpler than in diploids: after the elimination of a genome (always the genome in the minority in the triploid set; "homogenizing elimination"), no compensatory duplication of the remaining genetic material is necessary, as it is in diploids. The process of elimination can be visualized in triploid males by using DNA flow cytometry to identify cells in the special phase of the spermatogonial cell cycle that we termed the E phase.Key words: Rana esculenta, genome elimination, non-Mendelian inheritance, spermatogenesis, DNA flow cytometry.

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19

Vinogradov, Alexander E., and Alexander T. Chubinishvili. "Genome Reduction in a Hemiclonal Frog Rana esculenta From Radioactively Contaminated Areas." Genetics 151, no. 3 (March 1, 1999): 1123–25. http://dx.doi.org/10.1093/genetics/151.3.1123.

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Abstract A decrease in genome size was found in the hemiclonal hybridogenetic frog Rana esculenta (R. ridibunda × R. lessonae) from areas of radioactive contamination that resulted from the Chernobyl fallout. This genome reduction was of up to 4% and correlated with the background level of gamma-radiation (linear regression corresponded on average to -0.4% per doubling of radiation level). No change in genome size was observed in the coexisting parental species R. lessonae. There was no correlation between genome size and body mass in R. esculenta froglets, which have metamorphosed in the year of the study. The hemiclonal forms may become a suitable object for study on biological significance of individual DNA sequences (and of genome size as a whole) because mutant animals with deletions in a specified genome can arise after a low radiation dose. The proneness to genetic damage makes such forms also a prospective bioindicator of radioactive (and possibly other mutagenic) pollution with the effects of genetic damage conveniently and rapidly monitored by DNA flow cytometry.

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20

Hotz, Hansjürg, and Raymond D. Semlitsch. "DIFFERENTIAL PERFORMANCE AMONG LDH-B GENOTYPES IN RANA LESSONAE TADPOLES." Evolution 54, no. 5 (2000): 1750. http://dx.doi.org/10.1554/0014-3820(2000)054[1750:dpalbg]2.0.co;2.

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Hotz, Hansjürg, and Raymond D. Semlitsch. "DIFFERENTIAL PERFORMANCE AMONG LDH-B GENOTYPES IN RANA LESSONAE TADPOLES." Evolution 54, no. 5 (October 2000): 1750–59. http://dx.doi.org/10.1111/j.0014-3820.2000.tb00718.x.

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22

Borkin, Leo J., and M. M. Pikulik. "The Occurrence of Polymely and Polydactyly in Natural Populations of Anurans of the USSR." Amphibia-Reptilia 7, no. 3 (1986): 205–16. http://dx.doi.org/10.1163/156853886x00019.

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AbstractVarious cases of isolated and mass polymely and polydactyly in anurans of the USSR fauna are summarized. Mass polydactylies in frogs Rana arvalis arvalis and Rana lessonae-Rana esculenta as well as in toad Bufo bufo bufo are reported. Classiication of polydactyly types based on X-ray analysis is proposed. Species-specificity and lozalized appearance of mass polydactyly factor(s) are discussed.

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23

Snegin, Eduard, Anatoliy Barkhatov, Anton Sychev, and Elena Snegina. "Species composition of green frogs (Pelophylax Esculentus Complex) of the Belgorod agglomeration based on DNA markers." BIO Web of Conferences 30 (2021): 04008. http://dx.doi.org/10.1051/bioconf/20213004008.

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On the basis of molecular genetic analysis of the intron-1 of the nuclear serum albumin gene (SAI-1) were identified 177 individuals of Pelophylax esculentus complex of 9 localities Belgorod. Two types of population systems R and RE were identified. Pure populations of L-type, E-type and LE-type as well as P. lessonae individuals were not identified.

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24

Caldas, Francis Luiz Santos, Daniel Oliveira Santana, Renato Gomes Faria, Adriana Bocchiglieri, and Daniel Oliveira Mesquita. "Diploglossus lessonae Peracca, 1890 (Squamata: Anguidae): new records from northeast Brazil and notes on distribution." Check List 12, no. 5 (October 22, 2016): 1982. http://dx.doi.org/10.15560/12.5.1982.

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The family Anguidae contains three subfamilies: Gerrhonotinae, Anguinae, and Diploglossinae. In Brazil, there are four described anguid species, all from the subfamily Diploglossinae. Herein, we present the first records of Diploglossus lessonae Peracca, 1890 from the state of Sergipe and new records for the states of Paraíba and Ceará. The records compiled here for the Caatinga can reveal a pattern of widely distributed species in the biome.

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Hotz, Hansjürg, Thomas Uzzell, and Leszek Berger. "Linkage Groups of Protein-Coding Genes in Western Palearctic Water Frogs Reveal Extensive Evolutionary Conservation." Genetics 147, no. 1 (September 1, 1997): 255–70. http://dx.doi.org/10.1093/genetics/147.1.255.

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Abstract Among progeny of a hybrid (Rana shqiperica × R. lessonae) × R lessonae, 14 of 22 loci form four linkage groups (LGs): (1) mitochondrial aspartate aminotransferase, carbonate dehydratase-2, esterase 4, peptidase D; (2) mannosephosphate isomerase, lactate dehydrogenase-B, sex, hexokinase-1, peptidase B; (3) albumin, fructose-biphosphatase-1, guanine deaminase; (4) mitochondrial superoxide dismutase, cytosolic malic enzyme, xanthine oxidase. Fructose-biphosphate aldolase-2 and cytosolic aspartate aminotransferase possibly form a fifth LG. Mitochondrial aconitate hydratase, α-glucosidase, glyceraldehyde-3+hosphate dehydrogenase, phosphogluconate dehydrogenase, and phosphoglucomutase-2 are unlinked to other loci. All testable linkages (among eight loci of LGs 1, 2, 3, and 4) are shared with eastern Palearctic water frogs. Including published data, 44 protein loci can be assigned to 10 of the 13 chromosomes in Holarctic Rana. Of testable pairs among 18 protein loci, agreement between Palearctic and Nearctic Rana is complete (125 unlinked, 14 linked pairs among 14 loci of five syntenies), and Holarctic Rana and Xenopus laevis are highly concordant (125 shared nonlinkages, 13 shared linkages, three differences). Several Rana syntenies occur in mammals and fish. Many syntenies apparently have persisted for 60–140 × 106 years (frogs), some even for 350–400 × 106 years (mammals and teleosts).

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Anholt, Bradley R., Hansjürg Hotz, Gaston-Denis Guex, and Raymond D. Semlitsch. "OVERWINTER SURVIVAL OF RANA LESSONAE AND ITS HEMICLONAL ASSOCIATE RANA ESCULENTA." Ecology 84, no. 2 (February 2003): 391–97. http://dx.doi.org/10.1890/0012-9658(2003)084[0391:osorla]2.0.co;2.

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Iftime, Alexandru, and Oana Iftime. "Observations on the Herpetofauna of the Builavânturariţa Massif (Southern Carpathians, Romania )." Travaux du Muséum National d'Histoire Naturelle "Grigore Antipa" 56, no. 1 (August 1, 2013): 93–101. http://dx.doi.org/10.2478/travmu-2013-0007.

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Abstract The results of herpetological investigations in the Buila-Vânturariţa massif (Southern Carpathians, Romania) and its surrounding areas are reported here. 19 amphibian and reptile species were identified (Salamandra salamandra, Triturus cristatus, Ichthyosaura alpestris, Lissotriton vulgaris, Bombina variegata, Bufo bufo, B. viridis, Hyla arborea, Rana temporaria, R. dalmatina, Pelophylax ridibundus, P. lessonae, Emys orbicularis, Lacerta agilis, L. viridis, Podarcis muralis, Zootoca vivipara, Zamenis longissimus, Natrix natrix) and are presented together with distribution and ecological data.

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Kolodina, A. S., M. V. Pyatova, E. A. Ravkovskaya, and G. A. Lada. "TO THE QUESTION ON NUTRITION AND HELMINTHS OF POOL FROG (PELOPHYLAX LESSONAE) IN THE CONDITIONS OF TAMBOV PROVINCE." Tambov University Reports. Series: Natural and Technical Sciences 21, no. 5 (2016): 1791–96. http://dx.doi.org/10.20310/1810-0198-2016-21-5-1791-1796.

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Di Rosa, Ines, Romina Clarioni, Hansjürg Hotz, Rita Pascolini, Francesca Simoncelli, Anna Fagotti, Lorena Morosi, Roberto Pellegrino, and Gaston-Denis Guex. "Bioaccumulation of organochlorine pesticides in frogs of the Rana esculenta complex in central Italy." Amphibia-Reptilia 26, no. 1 (2005): 93–104. http://dx.doi.org/10.1163/1568538053693297.

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AbstractConcentrations of commonly used organochlorine pesticides (OCPs) were determined in tissues of 23 adult and 24 larval water frogs of two coexisting species (Rana lessonae and the hemiclonal hybrid R. esculenta) and in the water of their breeding pond in an agricultural zone in Umbria, central Italy, where increased occurrence of infectious diseases and distinctly oversized tadpoles were recently observed. The concentrations of OCP in tissues of both species were lower than those in the water of their breeding pond, except for DDT, which was more concentrated in adult frogs than in pond water (bioaccumulation factor 7 for R. lessonae, 15 for R. esculenta). Total OCP concentration and adult body weight were positively correlated for both species, which is consistent with bioaccumulation. In accord, adults contained higher OCP concentrations than tadpoles. Oversized tadpoles had higher OCP concentrations than normal tadpoles. Mean OCP concentrations in individual organs were about an order of magnitude higher than those in whole-frog homogenates. They were highest in brain, higher in ventral than in dorsal skin, and moderately high in ovaries; transmission of bioaccumulation loads to the next generation is therefore possible. The observed OCP concentrations appear too low to directly cause mortality in water frogs, but effects of cumulative exposure to low-level pollutants and their synergistic interactions with the effects of other natural and anthropogenic environmental stressors are unknown.

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Wycherley, Julia, Simon Doran, and Trevor J. C. Beebee. "Frog calls echo microsatellite phylogeography in the European pool frog (Rana lessonae)." Journal of Zoology 258, no. 4 (December 2002): 479–84. http://dx.doi.org/10.1017/s0952836902001632.

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Samgina, T. Yu, V. A. Gorshkov, Ye A. Vorontsov, K. A. Artemenko, S. V. Ogourtsov, R. A. Zubarev, and A. T. Lebedev. "Investigation of skin secretory peptidome of Rana lessonae frog by mass spectrometry." Journal of Analytical Chemistry 66, no. 13 (November 27, 2011): 1298–306. http://dx.doi.org/10.1134/s1061934811130120.

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Holenweg, A. K., and H. U. Reyer. "Hibernation behavior of Rana lessonae and R. esculenta in their natural habitat." Oecologia 123, no. 1 (April 12, 2000): 41–47. http://dx.doi.org/10.1007/s004420050987.

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Svitin, R., and Y. Kuzmin. "Oswaldocruzia duboisi (Nematoda, Molineidae): Morphology, Hosts and Distribution in Ukraine." Vestnik Zoologii 46, no. 3 (January 1, 2012): e-1-e-9. http://dx.doi.org/10.2478/v10058-012-0017-x.

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Oswaldocruzia duboisi(Nematoda, Molineidae): Morphology, Hosts and Distribution in UkraineOswaldocruzia duboisiBen Slimane, Durette-Desset et Chabaud, 1993 previously known from France and Bulgaria is reported from Ukraine for the first time. The species was found in the material from 8 amphibian host species, of whichLissotriton montadoni, Triturus cristatus, Mesotriton alpestris, Pelophylax ridibunda, P. lessonae, andHyla arboreaare new host records. Newts (Salamandridae) and green frogs (Pelophylax) are considered to be typical hosts forO. duboisi. Illustrated morphological redescription ofO. duboisibased on 141 specimens from various hosts is presented.

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Berger, W. Andrew, and Leszek Berger. "Progeny of water frog populations in central Poland." Amphibia-Reptilia 13, no. 2 (1992): 135–46. http://dx.doi.org/10.1163/156853892x00328.

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AbstractThe authors discuss progenies of 18 watcr frog populations. Individuals with esculenta phenotype which arc hybridogenetic hybrids between Rana ridibunda and Rana lessonae are the most numerous frogs among the adults and progeny. Esculenta tadpoles began and finished their metamorphosis mostly as first, and in progeny with esculenta phenotype there were more females than males. In pure esculenta population most of progeny belonged to ridibunda phenotype and female sex. The froglets caught in August were larger on an average than those in October or after hibernation.

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35

Kierzkowski, Piotr, Piotr Kosiba, Mariusz Rybacki, Małgorzata Socha, and Maria Ogielska. "Genome dosage effect and colouration features in hybridogenetic water frogs of the Pelophylax esculentus complex." Amphibia-Reptilia 34, no. 4 (2013): 493–504. http://dx.doi.org/10.1163/15685381-00002904.

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There are three taxons of central European water frogs of the Pelophylax esculentus complex: two morphologically distinct species, Pelophylax lessonae (LL) and Pelophylax ridibundus (RR), and hybrids Pelophylax esculentus, which can be either diploid (RL) or triploid (LLR or RRL). The morphology of hybrids is supposed to follow genome dosage effect. We describe colouration of water frogs with genome composition verified by chromosome analysis. Typical colouration features in LL were: spots on the ventral side, brown limbs, “weak” femur spotting pattern, brown dorsal folds and yellow-green colour in “waist”. Typical RR had dark-green or olive-green limbs, “full” femur spotting pattern, no hip spot and no yellow colour in “waist”. For all hybrids the most typical features were strong spots on the ventral side and a mosaic of green and brown colour on limbs. Typical LLR had brown-greenish dorsal folds underlined by a partial black line, “weak” femur spotting pattern and yellow-greenish colour in “waist” and on femur. Typical RL had greenish hind limbs, green dorsal folds, no yellow colour in “waist”, and no hip spot. Typical RRL was similar to RL, but had a continuous black line under dorsal folds. There were, however, numerous exceptions to these trends, with the most prominent being much higher than expected variability of colouration of Pelophylax lessonae. Therefore caution must be advised when trying to estimate genome composition of water frogs solely on the basis of colouration.

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Ратников, Вячеслав Юрьевич. "Герпетофауна из средненеоплейстоценового местонахождения ручей Колябинский (Курская область)." Вестник ВГУ. Серия: Геология, no. 2 (May 15, 2019): 36–42. http://dx.doi.org/10.17308/geology.2019.2/1756.

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В составе герпетофауны местонахождения Ручей Колябинский определены остатки восьми видов: Triturus cristatus (Laurenti) aut Triturus dobrogicus (Kiritzescu), Bufo bufo (Linnaeus), Hyla orientalis Bedriaga, Pelophylax lessonae (Camerano), Rana arvalis Nilsson, Anguis fragilis Linnaeus, Darevskia cf. derjugini (Nikolsky) и Natrix natrix (Linnaeus). Приводится описание и иллюстрации костей найденных видов, а также морфологической аномалии (сросшихся позвонков бурой лягушки), выявляется палеогеографическая обстановка во время захоронения герпетофауны. Особый интерес представляют находки южных форм: Hyla orientalis и Darevskia cf. derjugini. Последняя, ныне обитающая на Кавказе, свидетельствует о сильном изменении своего ареала к настоящему времени.

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Beebee, Trevor J. C., and Inga Zeisset. "RAPD identification of north European water frogs." Amphibia-Reptilia 19, no. 2 (1998): 163–70. http://dx.doi.org/10.1163/156853898x00458.

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AbstractA technique for the identification of north European water frogs (Rana lessonae, R. ridibunda and R. esculenta) based on PCR (polymerase chain reaction)-amplification of DNA using random primers (RAPD) is presented. The method requires very small amounts (< 2 mg) of tissue and reliably distinguished the three types of frogs using samples taken from two widely separate localities (Britain and Poland). In addition, the primers distinguished the DNA of water frogs from that of a brown frog (R. temporaria) and from that of two toad species (Bufo bufo and B. calamita).

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Петренко, Н. "Статевий диморфізм і міжпопуляційна мінливість Pelophylax lessonae (Amphіbia, Anura) з деяких регіонів України." Вісник Львівського університету. Серія біологічна, вип. 67 (2014): 208–16.

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39

Torki, Farhang. "Spermatogenesis in the agamaTrapelus lessonae(Agamidae: Reptilia) in the Central Zagros Mountains, Iran." Zoology in the Middle East 38, no. 1 (January 2006): 21–28. http://dx.doi.org/10.1080/09397140.2006.10638162.

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40

Roesli, Marzia, and Heinz-Ulrich Reyer. "Male vocalization and female choice in the hybridogenetic Rana lessonae/Rana esculenta complex." Animal Behaviour 60, no. 6 (December 2000): 745–55. http://dx.doi.org/10.1006/anbe.2000.1519.

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WILSON, R. S., P. G. KRAFT, and R. VAN DAMME. "Predator-specific changes in the morphology and swimming performance of larval Rana lessonae." Functional Ecology 19, no. 2 (April 2005): 238–44. http://dx.doi.org/10.1111/j.1365-2435.2005.00958.x.

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42

Sjögren, Per. "Genetic variation in relation to demography of peripheral pool frog populations (Rana lessonae)." Evolutionary Ecology 5, no. 3 (July 1991): 248–71. http://dx.doi.org/10.1007/bf02214231.

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43

Lengagne, T., O. Grolet, and P. Joly. "Male mating speed promote hybridization in the Rana lessonae–Rana esculenta waterfrog system." Behavioral Ecology and Sociobiology 60, no. 2 (January 19, 2006): 123–30. http://dx.doi.org/10.1007/s00265-005-0148-y.

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44

Sjögren-Gulve, Per. "Spatial movement patterns in frogs: Target-oriented dispersal in the pool frog,Rana lessonae." Écoscience 5, no. 1 (January 1998): 31–38. http://dx.doi.org/10.1080/11956860.1998.11682436.

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45

SJÖGREN, PER. "Extinction and isolation gradients in metapopulations: the case of the pool frog (Rana lessonae)." Biological Journal of the Linnean Society 42, no. 1-2 (January 1991): 135–47. http://dx.doi.org/10.1111/j.1095-8312.1991.tb00556.x.

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46

Gulve, Per Sjogren. "Distribution and Extinction Patterns within a Northern Metapopulation of the Pool Frog, Rana Lessonae." Ecology 75, no. 5 (July 1994): 1357–67. http://dx.doi.org/10.2307/1937460.

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47

EBENDAL, TED. "Karyotype and serum protein pattern in a Swedish population of Rana lessonae (Amphibia, Anura)." Hereditas 85, no. 1 (February 12, 2009): 75–80. http://dx.doi.org/10.1111/j.1601-5223.1977.tb00952.x.

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48

Garner, T. W. J., B. Gautschi, S. ROthlisberger, and H. U. Reyer. "A set of CA repeat microsatellite markers derived from the pool frog, Rana lessonae." Molecular Ecology 9, no. 12 (December 2000): 2173–75. http://dx.doi.org/10.1046/j.1365-294x.2000.105311.x.

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49

Orizaola, Germán, and Anssi Laurila. "Intraspecific variation of temperature-induced effects on metamorphosis in the pool frog (Rana lessonae)." Canadian Journal of Zoology 87, no. 7 (July 2009): 581–88. http://dx.doi.org/10.1139/z09-045.

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Understanding the factors that affect the process of metamorphosis in species with complex life cycles, and in particular their variation within and among populations, has been rarely explored until recently. We examined the effects of temperature environment on several metamorphic characteristics in three populations of the pool frog ( Rana lessonae Camerano, 1882) by rearing individuals at two temperature environments (20 and 25 °C). Higher temperature shortened the metamorphic period and reduced the absolute mass loss, although there was no difference between the temperatures in the percentage of mass lost. No differences among the populations were detected, but there was significant intrapopulation variation both in the mean and in the plasticity for the duration of metamorphosis. These results indicate that several aspects of metamorphosis are plastic in amphibians, these traits may have considerable intrapopulation variation, and that temperature is a strong factor affecting the process of metamorphosis.

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Nocera, F. P., A. De Filippis, N. Piscopo, L. Esposito, and L. De Martino. "Similarities between skin culturable bacterial species of pool frogs (Pelophylax lessonae) and their habitat." BULGARIAN JOURNAL OF VETERINARY MEDICINE 24, no. 1 (2021): 159–63. http://dx.doi.org/10.15547/bjvm.2019-0054.

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The aim of the present study was to investigate the culturable microflora of pool frogs (Pelophylax lessonae) and their belonging aquatic environment. A total of 60 samples (56 frog cutaneous swabs, 4 water samples) were inoculated onto different selective and differential agar plates to isolate Gram-positive and Gram-negative bacteria or yeasts. Microbial investigation of the water hosting frogs was also performed. Isolates were identified by API system and their antibiotic resistance profiles were evaluated by disk diffusion method on Mueller Hinton agar plates. Aeromonas hydrophila and Enterococcus durans were detected in almost all collected samples. Many of the bacterial isolates showed multidrug-resistant profiles. Importantly, this study highlights that skin frog microbiota is correlated to the belonging environment, and, moreover, some isolated bacterial strains resulted to be of interest in animal and public health, since the park was frequented by visitors of all ages.

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