| the structure of the skin of the tree frog (hyla arborea arborea l.). | the aim of the study was to investigate the structure of the skin of the adult tree frog hyla arborea arborea l. by scanning electron microscopy (sem) and light microscopy (lm). sem observation shows that the skin from the dorsal part of body is smooth whereas the ventral part has regular ridges and grooves. the superficial layer of the skin consists of irregular shaped epidermal cells covered with microridges differing on the dorsal and ventral skin. two types of gland outlets, funnel-type and ... | 1998 | 9645299 |
| angiotensin ii suppresses water absorption through the ventral skin of japanese tree-frogs in vitro. | we previously described two different water absorption systems in the ventral skin of the japanese tree-frog, hyla arborea japonica: i.e., a rapid enhanced flow, which is observed in dehydrated tree-frogs or those stimulated by adrenaline beta-agonists or vasotocin, and a slow basal flow, which is observed in normally hydrated frogs during the non-breeding season. the rapid flow is completely blocked by ouabain, which has no effects on the slow basal flow. in the present experiment, we show that ... | 1995 | 7580806 |
| fine structural changes in the endolymphatic sac induced by calcium loading in the tree frog, hyla arborea japonica. | the growth rate of calcium carbonate (caco3) crystals in the endolymphatic sac was modulated, and morphological changes in this organ were observed by light and electron microscopy. when calcium chloride (cacl2) was given to the three frog for a short period (3 days to 2 weeks), caco3 crystal production was accelerated. epithelial cells enlarged, their rough endoplasmic reticulum (rer) and golgi apparatus developed, and dense material increased around caco3 crystals and/or in the endolymphatic l ... | 1990 | 2268475 |
| localization of pyroantimonate-precipitable calcium in the endolymphatic sac of the tree frog, hyla arborea japonica. | the pyroantimonate technique and a new demineralization method were employed to visualize pyroantimonate-precipitable calcium in the endolymphatic sac of the tree frog. the precipitate was determined to contain calcium (ca) by egta extraction and x-ray microanalysis. the precipitate was mainly localized around calcium carbonate (caco3) crystals when frogs were not loaded with calcium chloride (cacl2). when crystalline growth was accelerated by loading with cacl2, the precipitate increased in amo ... | 1990 | 2125230 |
| loss of limb regenerative capacity during postmetamorphic growth in the tree frog, hyla arborea japonica. | anuran limb regenerative capacity was investigated in froglets of various sizes (snout-vent length) and adults of the japanese tree frog, hyla arborea japonica by amputating forelimbs through the zeugopodium and stylopodium. almost all limbs amputated through the zeugopodium showed heteromorphic regeneration in postmetamorphic froglets 14 to 18 mm in length. however, the larger the froglet, the lower the capacity of limb regeneration. regenerative capacity was completely lost in adults of more t ... | 2003 | 2210916 |
| effects of calcium preloading on the growth of calcium carbonate crystals in the endolymphatic sac of the tree frog, hyla arborea japonica. | tree frogs, either with or without calcium chloride preloading, were maintained in a 0.8% strontium chloride solution for 1 week, then studied by x-ray microanalysis and scanning electron microscopy to determine the distribution of incorporated strontium in the endolymphatic crystals. in the absence of calcium preloading, strontium was detected on every surface of all the crystals, but after calcium preloading for 5 or 7 weeks, strontium incorporation was partially or completely inhibited, sugge ... | 1988 | 3396062 |
| light- and electron-microscopic study of the endolymphatic sac of the tree frog, hyla arborea japonica. | the endolymphatic sac of the tree frog and its crystals were observed by light- and electron microscopy. scanning electron microscopy revealed that the crystals have a faceted body and two pointed ends. light- and transmission electron microscopy revealed that the endolymphatic sac is composed of many small chambers. in their lumina, numerous "ghosts" of crystals that resulted from decalcifications were observed. the ghosts were demarcated by a linear dense material or embedded in a flocculent s ... | 1987 | 3621296 |
| incorporation of strontium into the calcium carbonate crystals of the endolymphatic sac in the tree frog (hyla arborea japonica). | tree frogs were loaded with strontium chloride (srcl2). the incorporation of strontium metal into the calcium carbonate (caco3) crystals located both in the inner ear and in the endolymphatic sac was studied by x-ray microanalysis (xma) and scanning electron microscopy (sem). in the inner ear, strontium was not recognized except for traces in a few crystals. when observed by sem, these crystals had a faceted body and two pointed ends with rather smooth surfaces. however, in the endolymphatic sac ... | 1987 | 3619090 |
| growth aspects of calcium carbonate crystals of the endolymphatic sac in the tree frog (hyla arborea japonica): a pulse-chase study. | | 1987 | 3449594 |
| [a fine structure and carbohydrate histochemistry of the lingual glands of the tree frog (hyla arborea japonica)]. | | 1986 | 3467261 |
| lung of the tree frog, hyla arborea l. a scanning and transmission electron microscopic study. | lungs of hyla arborea l. were examined by scanning and transmission electron microscopy and morphometric methods. the lungs contain several interconnected folds in a netlike reticular arrangement of first, second and third order, mainly covered with pneumocytes. on the septa of first and second order, irregularly distributed small patches of ciliated epithelium devoid of goblet cells are located. dome-shaped neuroepithelial bodies can be seen in the vicinity of ciliated epithelium. the pulmonary ... | 1986 | 3766994 |
| limb regenerative capacity of four species of japanese frogs of the families hylidae and ranidae. | the regenerative capacity of limbs was investigated by amputation of limbs at the zeugopodium in postmetamorphic froglets and adults of various sizes in four species of japanese frogs, all of which showed some regeneration at these ages. in hyla arborea japonica and rana brevipoda porosa most young froglets regenerated their limbs well; however, the rate of regeneration decreased with the age of amputation, and the limb became nonregenerative in adults. limbs of adults in rana rugosa and r. japo ... | 1982 | 7120419 |
| [metamorphosis of hyla arborea and of rana esculenta in conditions of environmental pollution: a biostatistical study]. | an extention to the largest possible numbers of animal species is a basic requirement when damages induced by pollutants are studies with a specific purpose of defining the concentrations of pollutants compatible with the conservation of the biochemical system. animals should be bred in standard conditions, and the natural habitat is to be reproduced in the laboratory. the studies should also be planned favoring these statistical elaborations which are suitable of application also in case of int ... | 1981 | 6976178 |
| neuroepithelial bodies in the lung of the tree frog, hyla arborea l. a scanning and transmission electron microscopic study. | the endocrine-like cells (elc), which together with nerve endings form the neuroepithelial bodies, are located on primary and secondary septa in the non-ciliated epithelium of the lung of hyla arborea. elc protrude markedly toward the lumen of the lung and are surrounded by pneumocytes, which separate elc from the lumen by thin cytoplasmic processes. elc possess a light cytoplasm containing two types of granules: (i) numerous small granules, 50-110 nm in diameter, and (ii) single large granules, ... | 1981 | 7237539 |
| genetic diversity and climatic determinants of tree frogs in israel. | allozymic variation in proteins encoded by 27 loci was analyzed electrophoretically in 218 adult specimens, mostly males, representing 8 populations, 5 central and 3 marginal, of lemon yellow treefrogs, hyla arborea savignyi, in israel along two transects of increasing aridity: (a) north to south and (b) west to east. the results indicate that (a) of the 27 loci examined, 5 are monomorphic in all 8 populations; 9 are locally and weakly polymorphic; 6 are regionally and weakly polymorphic; and 7 ... | 1979 | 28310359 |
| central control of mating call production and spawning in the tree frog hyla arborea savignyi (audouin): results of electrical stimulation of the brain. | electrical stimulation of the anterior preoptic nucleus elicited the production of mating calls by male hyla arborea savignyi. such calls are composed of pulses resembling those of natural mating calls both in their duration and in their sequential arrangement. as a rule, the amplitude of successive pulses within a group increases more rapidly in the electrically evoked calls than in natural calls. the frogs could be brought into a state of readiness to call, which did not lead to actual calling ... | 1976 | 24923848 |
| structure of the mating calls and relationships of the european tree frogs (hylidae, anura). | as an extension of earlier investigations, the mating calls ofhyla arborea kretensis, hyla a. molleri, andhyla a. sarda were studied, and variations in the calls with air temperature were determined. the mating calls of these species exhibit the typical structure, made up of short pulses of varying amplitude. the call duration and the inter-call interval decrease linearly with increasing temperature (over the range in which calls can occur), whereas the number of pulses per call does not change. ... | 1974 | 28308100 |
| [the fine structure of the laryngeal muscles of the tree frog, hyla arborea arborea (l)., compared with that of a skeletal muscle (author's transl)]. | | 1973 | 4743255 |
| [vitellogenesis of mitochondrial origin in the ovocyte of hyla arborea l. (anourous amphibian)]. | | 1972 | 4640397 |
| in vitro assay of msh using skin from the frog hyla arborea. | | 1970 | 4322663 |
| [perfusion fixation of frog pancreas using various solutions (hyla arborea, rana esculenta, rana temporaria)]. | | 1970 | 4941793 |
| [studies on the development of xenoplastic eye chimerae in amphibians]. | 1. in order to evaluate the development of the xenoplastic eye chimerae, stages of differentiation of the normal eye inbombina variegata, hyla arborea andtriturus alpestris between the second and ninth day after neurulation have been worked out, and the results are summarized in table 1. 2. four types of chimeric eyes developed after transplantation of the eye-cup anlagen: type i, species-specific donor eye cup with a host lens; type ii, host lens with a chimeric eye cup which was made of donor ... | 1969 | 28304449 |
| [rhythm of acoustic activity of hyla arborea (linné) and hyla meridionalis boettger anourous amphibians]. | | 1967 | 4229306 |
| [cytomorphosis of mauthner's sheath in the hyla arborea savignyi; in normal development and in experimentally induced metamorphosis]. | | 2015 | 14921650 |
| [metachromatism in hyla arborea]. | | 1950 | 24537920 |
| impacts of the synthetic androgen trenbolone on gonad differentiation and development - comparisons between three deeply diverged anuran families. | using a recently developed approach for testing endocrine disruptive chemicals (edcs) in amphibians, comprising synchronized tadpole exposure plus genetic and histological sexing of metamorphs in a flow-through-system, we tested the effects of 17β-trenbolone (tb), a widely used growth promoter in cattle farming, in three deeply diverged anuran families: the amphibian model species xenopus laevis (pipidae) and the non-models bufo(tes) viridis (bufonidae) and hyla arborea (hylidae). trenbolone was ... | 2019 | 31270347 |
| predicting species occurrences with habitat network models. | biodiversity conservation requires modeling tools capable of predicting the presence or absence (i.e., occurrence-state) of species in habitat patches. local habitat characteristics of a patch (lh), the cost of traversing the landscape matrix between patches (weighted connectivity [wc]), and the position of the patch in the habitat network topology (nt) all influence occurrence-state. existing models are data demanding or consider only local habitat characteristics. we address these shortcomings ... | 2019 | 31624560 |