| [parasitism of larvae of the fly, lucilia bufonivora, moniez, 1876, on anura]. | in 1951 to 1973 there were recorded cases of myiasis in four species of amphibia (pelobates fuscus, bufo bufo, b. viridis, rana arvalis) from the volga-kama state reserve (the tatar assr). in arid 1972 the number of rana arvalis with myiasis reached to 20-25%. observations were conducted on the development of lucilia bufonivora from the egg laying to the host death and hatching of imago. | 1976 | 134338 |
| toxic skin secretions of the spade-foot toad pelobates fuscus. | | 1968 | 5711162 |
| the formation of somites and early myotomal myogenesis in xenopus laevis, bombina variegata and pelobates fuscus. | myogenesis in xenopus laevis and in bombina variegata is similar despite differences in the structure of the nonsegmented mesoderm and in the formation of the myotomes. in x. laevis the nonsegmented mesoderm consists of two cell layers with the premyocoel between them. during somitogenesis the premyoblasts rotate covering subsequently the whole myotome length. in b. variegata the premyocoel is absent. the myotomal cells change their shape and elongate, attaining ultimately the whole myotome leng ... | 1981 | 7310306 |
| [topochemical studies on the ovum of xenopus laevis and rana fusca]. | | 1956 | 13361807 |
| pattern and rate of ovary differentiation with reference to somatic development in anuran amphibians. | the rate of somatic development of anuran amphibians is only roughly correlated with the rate of gonad differentiation and varies among species. the somatic stage of a tadpole often does not reflect its age, which seems to be crucial for gonad differentiation rate. we compared the morphology and differentiation of developing ovaries at the light and electron microscopy level, with reference to somatic growth and age of a female. our observations were performed on 12 species of six families (rana ... | 2004 | 14666524 |
| [analysis of helminthofauna of common spaedfoot pelobates fuscus (laurenti, 1768) and moor frog rana arvalis nilsson, 1842 (amphibia: anura) at their joint habitation]. | the helminths fauna of common spaedfoot pelobates fuscus (laurenti, 1768) and moor frog rana arvalis nilsson, 1842 has been studied at their joint habitation. the stuff was collected in 1998-2002, 2004-2006 years in several regions (republic mordovia, samara and saratov areas). the processing of a stuff is conducted by a method of full helmintologic dissecting. the fauna of helminths considerably differs. for common spaedfoot only 13 species of helminths was detected which also parasitized moor ... | 2009 | 19637773 |
| evolutionary trend for metamery reduction and gonad shortening in anurans revealed by comparison of gonad development. | the gonads develop as the metameric mesodermal structures at the ventral surface of the mesonephroi. to study the evolutionary trends for anuran gonads, we performed comparative analysis of three species from the basal paraphyletic group - archaeobatrachia (bombina bombina, xenopus laevis, pelobates fuscus) and five species from more derived monophyletic neobatrachia group (hyla arborea, bufotes viridis, rana dalmatina, rana arvalis, rana temporaria). light and scanning electron microscopy analy ... | 2014 | 26154333 |
| models of amphibian myogenesis - the case of bombina variegata. | several different models of myogenesis describing early stages of amphibian paraxial myotomal myogenesis are known. myoblasts of xenopus laevis and hymenochirus boettgeri change their position from perpendicular to parallel, in relation to axial organs, and differentiate into mononucleate myotubes. in bombina variegate the myotomal myoblasts change their shape from round to elongate and then differentiate into mononuclear, morphologically mature myotubes. in pelobates fuscus and triturus vulgari ... | 2017 | 28287243 |
| [natural amino acids as effective stimuli evoking chemoreceptor-directed behavior in anuran tadpoles]. | the behavioral reactions of tadpoles of four anuran species, inhabiting moscow region (rana temporaria l., r. lessonae cam., bufo bufo, and pelobates fuscus laur.), on solutions of natural l-amino-acids of different concentrations. it was shown that none of the tadpoles respond to solutions of most amino-acids with concentrations less than 10(-2) mole/l. sequences of relative efficiency of amino-acids as chemical stimuli, inducing feeding behaviour. the sequences display interspecific difference ... | 1995 | 7631525 |
| [various histological observations on larval epidermis and external cornea of pelobates fuscus laur]. | | 1953 | 13065763 |
| [orientation of the plane of bilateral symmetry by centrifugations in direction perpendicular to the ovular axis, of fertilized or non-iota fertilized eggs of rana fusca]. | | 1951 | 14849046 |
| [the production of double monsters in rana fusca by centrifugation of undivided eggs]. | | 2009 | 14953398 |
| the origin of fat from protein in the so-called fatty metamorphosis of phosphorus poisoning. | 588.780 grm. of frogs, all of the same sex, of the same comparative approximate weights, taken from the ground about the same time, kept awake and without food for nearly the same time, were divided into equal groups; the one group was poisoned with phosphorus, the other group held as a control. the frogs in the poisoned group lost in dried residue 8.821 grm. or 16.5 per cent of the dried residue of the control group; 1.182 grm. of nitrogen, corresponding to 7.388 of proteid, or 18.45 per cent o ... | 1899 | 19866916 |
| [orientation of the plane of bilateral symmetry & of the dorsoventral axis by compression of the eggs of rana fusca]. | | 1959 | 13629930 |
| [electron microscope studies on the ependyma of the choroid plexus in rana esculenta and rana fusca (roesel)]. | | 1962 | 14487814 |
| [topochemical demonstration of glycogen in the perivitelline space of the frog ovum (rana fusca rosel)]. | | 1963 | 14045932 |
| [ultrastructure of the vitelline nucleus ("mitochondrial cloud") of rana fusca oocytes]. | | 1969 | 5378505 |
| [early stages of preoral intestinal diverticula in rana fusca]. | | 1970 | 5523303 |
| development of the tongue and taste disks in pelobates fuscus. | in the tadpole of pelobates fuscus the process of tongue formation starts at the 32nd developmental stage. in more advanced stages (older than 38th) fast anterior and faucial growth of the tongue fold has been observed. this process is accompanied by the development of the gustatory organs. the dorsal surface of the tongue fold, smooth at the beginning, in older tadpoles (developmental stages 36-39th) forms protrusions in which gustatory organs of the taste disk type (tds) develop. in the 41 st ... | 2002 | 12729161 |
| [genetic variation in two forms of the common spadefoot toad pelobates fuscus (pelobatidae, anura, amphibia) distinguished by genome size]. | genetic differences (presumed 23 loci) between two cryptic forms of pelobates fuscus, differing in genome size, were examined by means of polyacrylamide-gel electrophoresis. this method allowed to discriminate between these forms. average genetic distance (dn) between both the forms was equal to 0.311, ranging from 0.055 to 0.563. as a rule, differences within these groups were smaller (0.021-0.388). the data show obvious genetic differentiation between these two cryptic forms of p. fuscus. diff ... | 2003 | 14520888 |
| two major tachykinins, substance p and substance k, are localized to distinct subsets of amacrine cells in the anuran retina. | tachykinins are known to be major excitatory neuromodulators in neural systems, including the retina of many vertebrate species. among them substance p has been detected in several species, including anurans. however, none of the other major tachykinins has been sought for in the anuran retina. the aim of this study was to identify another major tachykinin, substance k (neurokinin a) in the frog retina and compare its distribution to that of substance p. since one of the synthetic pathways of th ... | 2005 | 16005149 |
| gaba-immunoreactive photoreceptors in the retina of an anuran, pelobates fuscus. | we have recently started to unravel the retinal neurochemistry of an anuran species, the spadefoot toad (pelobates fuscus), because of its unique lifestyle. the immunolabelling experiments included tests to localize the major inhibitory transmitter, gamma-aminobutyric acid (gaba) to subsets of retinal neurons, using commercially available antibodies. apart from the regular gaba-immunoreactive pattern observed formerly in other anurans, certain structures in the photoreceptor layer were also regu ... | 2007 | 17349745 |
| from metamorphosis to maturity in complex life cycles: equal performance of different juvenile life history pathways. | performance in one stage of a complex life cycle may affect performance in the subsequent stage. animals that start a new stage at a smaller size than conspecifics may either always remain smaller or they may be able to "catch up" through plasticity, usually elevated growth rates. we study how size at and date of metamorphosis affected subsequent performance in the terrestrial juvenile stage and lifetime fitness of spadefoot toads (pelobates fuscus). we analyzed capture-recapture data of > 3000 ... | 2012 | 22624219 |
| vocalizations in juvenile anurans: common spadefoot toads (pelobates fuscus) regularly emit calls before sexual maturity. | acoustic communication is prominent in adult anuran amphibians, in reproductive, territorial and defensive contexts. in contrast, reports on vocalizations of juvenile anurans are rare and anecdotal, and their function unstudied. we here provide conclusive evidence for vocalizations in juvenile spadefoot toads (pelobates fuscus) in very early terrestrial stages. while the aquatic tadpoles did not emit sounds, first vocalizations of metamorphs were heard as early as in stages 42-43, and calls were ... | 2016 | 27590626 |
| out of the ground: two coexisting fossorial toad species differ in their emergence and movement patterns. | understanding the way species with similar niches can coexist is a challenge in ecology. the niche partitioning hypothesis has received much support, positing that species can exploit available resources in different ways. in the case of secretive species, behavioural mechanisms of partitioning are still poorly understood. this is especially true for fossorial frogs because individuals hide underground by day and are active only during the night. we investigated the nocturnal activity and tested ... | 2017 | 28057410 |
| analysis of fatty acid composition revealed differences in the diets of tadpoles of two amphibian species. | the study of the composition of fatty acid markers of tadpoles of cohabiting amphibian species for the first time revealed differences in their diets: the moor frog rana arvalis prefers bacteria not associated with plant detritus, whereas the diet of the common spadefoot pelobates fuscus is based on cyanobacteria, green algae, diatoms, and possibly higher plants. major differences in the fatty acid composition are determined by the difference in the percentage of eicosapentaenoic and myristic ac ... | 2017 | 28421438 |
| evaluation of bone mineralization by computed tomography in wild and captive european common spadefoots (pelobates fuscus), in relation to exposure to ultraviolet b radiation and dietary supplements. | captive rearing programs have been initiated to save the european common spadefoot (pelobates fuscus), a toad species in the family of pelobatidae, from extinction in the netherlands. evaluating whether this species needs ultraviolet b (uvb) radiation and/or dietary supplementation for healthy bone development is crucial for its captive management and related conservation efforts. the bone mineralization in the femurs and the thickest part of the parietal bone of the skulls of european common sp ... | 2017 | 28920809 |
| fossorial but widespread: the phylogeography of the common spadefoot toad (pelobates fuscus), and the role of the po valley as a major source of genetic variability. | pelobates fuscus is a fossorial amphibian that inhabits much of the european plain areas. to unveil traces of expansion and contraction events of the species' range, we sequenced 702 bp of the mitochondrial cytochrome b gene. to infer the population history we applied phylogeographical methods, such as nested clade phylogeographical analysis (ncpa), and used summary statistics to analyse population structure under a neutral model of evolution. populations were assigned to different drainage syst ... | 2007 | 17594444 |
| patterns of assemblage structure indicate a broader conservation potential of focal amphibians for pond management. | small freshwater ponds host diverse and vulnerable biotic assemblages but relatively few conspicuous, specially protected taxa. in europe, the amphibians triturus cristatus and pelobates fuscus are among a few species whose populations have been successfully restored using pond restoration and management activities at the landscape scale. in this study, we explored whether the ponds constructed for those two target species have wider conservation significance, particularly for other species of c ... | 2016 | 27459303 |
| induction of tympanic membrane in bombina bombina and pelobates fuscus. | | 1945 | 21026703 |
| the economic efficiency of conservation measures for amphibians in organic farming--results from bio-economic modelling. | this paper presents a whole farm bio-economic modelling approach for the assessment and optimisation of amphibian conservation conditions applied at the example of a large scale organic farm in north-eastern germany. the assessment focuses mainly on the habitat quality as affected by conservation measures such as through specific adapted crop production activities (cpa) and in-field buffer strips for the european tree frog (hyla arborea), considering also interrelations with other amphibian spec ... | 2013 | 23164542 |
| the evolution of amphibian metamorphosis: insights based on the transformation of the aortic arches of pelobates fuscus (anura). | in order to gain insights into how the aortic arches changed during the transition of vertebrates to land, transformations of the aortic arches during the metamorphosis of pelobates fuscus were investigated and compared with data from the early development of a recent ganoid fish amia calva and a primitive caudate amphibian salamandrella keyserlingi. although in larval pelobates, as in other non-pipid anurans, the gill arches serve partly as a filter-feeding device, their aortic arches maintain ... | 2007 | 17367494 |
| investigation of amphibian mortality events in wildlife reveals an on-going ranavirus epidemic in the north of the netherlands. | in the four years following the first detection of ranavirus (genus ranavirus, family iridoviridae) infection in dutch wildlife in 2010, amphibian mortality events were investigated nationwide to detect, characterize and map ranaviruses in amphibians over time, and to establish the affected host species and the clinico-pathological presentation of the disease in these hosts. the ultimate goal was to obtain more insight into ranavirus disease emergence and ecological risk. in total 155 dead amphi ... | 2016 | 27315226 |
| chytridiomycosis risk among central european amphibians based on surveillance data. | the czech republic hosts a surprisingly rich biodiversity of amphibians representing the majority of amphibian species present in all of central and eastern europe. surveillance data of batrachochytrium dendrobatidis (bd) collected during 2008 to 2012 were analysed for basic patterns of prevalence and infection intensity among species, age groups and localities. in addition, an investigation was made into possible data bias due to varying pcr inhibition. infection prevalence in the genus pelophy ... | 2014 | 25392037 |
| growth and development of the larvae of the common spadefoot toad under experimental conditions. | | 2015 | 4668832 |
| frequency distributions of 90sr and 137cs concentrations in an ecosystem of the "red forest" area in the chernobyl exclusion zone. | in the most highly contaminated region of the chernobyl exclusion zone, the "red forest" site, the accumulation of the major dose-affecting radionuclides (90sr and 137cs) within the components of an ecological system encompassing 3,000 m(2) was characterized. the sampled components included soils (top 0-10 cm depth), molina caerulea (blue moor grass), camponotus vagus (carpenter ants), and pelobates fuscus (spade-footed toad). in a comparison among the components of this ecosystem, the 90sr and ... | 2011 | 21878766 |
| [development and growth in length of embryos of the rana fusca and bufo vulgaris; concrescence and coelom theory]. | | 1952 | 12996254 |
| amphibia as a vector of transfer of long-chain polyunsaturated omega-3 fatty acids from aquatic to terrestrial ecosystems. | the flow of long-chain polyunsaturated fatty acids (pufas) of the omega-3 family, namely, eicosapentaenoic acid (20:5n-3, epa) and docosahexaenoic acid (22:6n-3, dha), exported by amphibian metamorphs from water to terrestrial ecosystems in the medveditsa river floodplain, was quantified for the first time. the total biomass export by three amphibian species (pelobates fuscus, bombina bombina, and pelophylax ridibundus) per unit area of the lake surface was 0.594 g/m2 per year (as a mean for 2 y ... | 2018 | 30168057 |
| total non-consumptive effects of fish on pelobates fuscus and hyla orientalis tadpoles in pond enclosure experiments. | most research on non-consumptive predator effects on amphibian larvae has been conducted in laboratory or mesocosm designs. here, pelobates fuscus and hyla orientalis tadpoles were separately exposed to non-lethal (free-moving, but with tied mouthparts) common carp cyprinus carpio for one week in enclosures placed in a pond densely stocked with fish. tadpoles exposed to nonlethal fish did not differ in mortality, body mass, or, except for deeper tail fin depth in p. fuscus, morphological plastic ... | 2018 | 30520359 |