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Journal articles on the topic 'Frogs'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Oh, Hye-Ji, Kwang-Hyeon Chang, Mei-Yan Jin, et al. "Trophic Ecology of Endangered Gold-Spotted Pond Frog in Ecological Wetland Park and Rice Paddy Habitats." Animals 11, no. 4 (2021): 967. http://dx.doi.org/10.3390/ani11040967.

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The gold-spotted pond frog (Pelophylax chosenicus) is an endangered amphibian species in South Korea. In order to obtain ecological information regarding the gold-spotted pond frog’s habitat environment and biological interactions, we applied stable isotope analysis to quantify the ecological niche space (ENS) of frogs including black-spotted pond frogs (P. nigromaculatus) and bullfrogs (Lithobates catesbeianus) within the food web of two different habitats—an ecological wetland park and a rice paddy. The gold-spotted pond frog population exhibited a broader ENS in the ecological wetland park

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2

KORNILOVA, N. V., V. G. ABUSHKEVICH, A. N. ARDELYAN, Yu Yu PEROVA, and A. G. POKHOT'KO. "VISUALIZATION OF THE EXCITATION PROCESS IN THE FROG'S NERVES." Kuban Scientific Medical Bulletin 25, no. 4 (2018): 51–54. http://dx.doi.org/10.25207/1608-6228-2018-25-4-51-54.

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Aim.Visualization of the excitation process in the frog's nerves.Materials and methods. Observations were carried out on 30 immobilized frogs. Vagosympathetic trunks and sciatic nerve were allocated from the frogs. Ligatures were placed on the right vagosympathetic trunk crossing it. A scanner of the gas discharge visualization camera of the CELSY device, which created a high- frequency electromagnetic field (1024 Hz), was installed above the nerves. The scanner with a highly sensitive camera shot a 60-second video (the frequency of frame-by-frame shooting to 1000 frames per second), during wh

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3

Lenin, Kanagasabai. "Factual Power Loss Diminution by Enhanced Frog Leaping Algorithm." Journal of Applied Science, Engineering, Technology, and Education 3, no. 2 (2020): 114–18. http://dx.doi.org/10.35877/454ri.asci112.

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This paper proposes Enhanced Frog Leaping Algorithm (EFLA) to solve the optimal reactive power problem. Frog leaping algorithm (FLA) replicates the procedure of frogs passing though the wetland and foraging deeds. Set of virtual frogs alienated into numerous groups known as “memeplexes”. Frog’s position’s turn out to be closer in every memeplex after few optimization runs and certainly, this crisis direct to premature convergence. In the proposed Enhanced Frog Leaping Algorithm (EFLA) the most excellent frog information is used to augment the local search in each memeplex and initiate to the e

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4

Sugiura, Shinji. "Anti-predator defences of a bombardier beetle: is bombing essential for successful escape from frogs?" PeerJ 6 (November 30, 2018): e5942. http://dx.doi.org/10.7717/peerj.5942.

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Some animals, such as the bombardier beetles (Coleoptera: Carabidae: Brachinini), have evolved chemical defences against predators. When attacked, bombardier beetles can discharge noxious chemicals at temperatures of approximately 100 °C from the tip of their abdomens, “bombing” their attackers. Although many studies to date have investigated how bombardier beetles discharge defensive chemicals against predators, relatively little research has examined how predators modify their attacks on bombardier beetles to avoid being bombed. In this study, I observed the black-spotted pond frog Pelophyla

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5

McCAY, MICHAEL G. "AERODYNAMIC STABILITY AND MANEUVERABILITY OF THE GLIDING FROG POLYPEDATES DENNYSI." Journal of Experimental Biology 204, no. 16 (2001): 2817–26. http://dx.doi.org/10.1242/jeb.204.16.2817.

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SUMMARY Gliding has evolved independently in two families of tree frog. Tree frogs glide to descend rapidly to mating sites over temporary pools on the forest floor or to escape predators. The physical mechanisms used by frogs to glide and maneuver were investigated using a combination of observations of live frogs (Polypedates dennysi) gliding in a tilted wind-tunnel and aerodynamic forces and torques measured from physical models of tree frogs in a wind-tunnel. Tree frogs maneuvered in the tilted wind-tunnel using two different turning mechanisms: a banked turn (the frog rolls into the turn)

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6

Chuang, Tsai-Fu, and Yuan-Hsiou Chang. "A New Design Concept of an Ecological Corridor for Frogs to Improve Ecological Conservation." Sustainability 13, no. 20 (2021): 11175. http://dx.doi.org/10.3390/su132011175.

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Ecological corridors are an essential element in conserving the biodiversity and proper functioning of ecosystems. Without their connectivity, a very large number of species would not have access to all of the habitats needed for their life cycles. Although the concept of an ecological corridor has been discussed for many years, few studies on ecological corridors for frogs have been conducted. Frogs are often considered to be a keystone species. They are a good indicator of habitat health, and they are often the first to be harmed by pollution or ecosystem deterioration. However, there have b

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Ardiyansyah, Fuad, Dini Endah Tri Kusumawati, Joko Prasetyo, Ria Rafidha Kasyim, and Hasyim As'ari. "IDENTIFIKASI MORFOLOGI SPERMA KATAK FAMILI (BUFONIDAE) MENGGUNAKAN METODE GALLI MAININI." JURNAL BIOSENSE 7, no. 02 (2024): 326–34. https://doi.org/10.36526/biosense.v7i02.3981.

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Frogs and toads belong to the same order, Anura, but toads usually have rough and bumpy skin like those in the Bufonidae family. This study aims to study the morphological characteristics of male frog sperm cells using the galli mainini method, using pregnant women's urine containing the hormone human Chorionic Gonadotropin (hCG) to stimulate sperm production. Urine is injected into the frog's abdominal membrane, and after 30 minutes, the frog is stimulated to excrete urine containing sperm. The results showed that the length of Bufonidae frog spermatozoa ranged from 32.54 μm to 73.31 μm with

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8

Wang, Shuqi, Jizhuang Fan, and Yubin Liu. "Simulation Analysis of Frog-Inspired Take-Off Performance Based on Different Structural Models." Biomimetics 9, no. 3 (2024): 168. http://dx.doi.org/10.3390/biomimetics9030168.

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The frog-inspired jumping robot is an interesting topic in the field of biomechanics and bionics. However, due to the frog’s explosive movement and large range of joint motion, it is very difficult to make their structure completely bionic. To obtain the optimal jumping motion model, the musculoskeletal structure, jumping movement mechanism, and characteristics of frogs are first systematically analyzed, and the corresponding structural and kinematic parameters are obtained. Based on biological characteristics, a model of the articular bone structure is created, which can fully describe the fe

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9

Smith, Lora L., Jennifer M. Howze, Jennifer S. Staiger, Eric R. Sievers, Deborah Burr, and Kevin M. Enge. "Added Value: Gopher Tortoise Surveys Provide Estimates of Gopher Frog Abundance in Tortoise Burrows." Journal of Fish and Wildlife Management 12, no. 1 (2020): 3–11. http://dx.doi.org/10.3996/jfwm-20-030.

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Abstract The gopher frog Lithobates capito is one of the most terrestrial frogs in the southeastern United States and often inhabits gopher tortoise burrows Gopherus polyphemus outside of the breeding season. Gopher frog populations have declined, and the species is under review for listing as threatened or endangered under the U.S. Endangered Species Act. Much of our knowledge on the status of gopher frogs is based on detections of larvae at breeding wetlands, which can be challenging because of environmental variability and provides no information on the terrestrial life stages of the specie

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10

Woinarski, J. C. Z., S. M. Legge, L. A. Woolley, et al. "Predation by introduced cats Felis catus on Australian frogs: compilation of species records and estimation of numbers killed." Wildlife Research 47, no. 8 (2020): 580. http://dx.doi.org/10.1071/wr19182.

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Abstract ContextWe recently estimated the numbers of reptiles, birds and mammals killed by cats (Felis catus) in Australia, with these assessments providing further evidence that cats have significant impacts on Australian wildlife. No previous studies have estimated the numbers of frogs killed by cats in Australia and there is limited comparable information from elsewhere in the world. AimsWe sought to (1) estimate the numbers of frogs killed by cats in Australia and (2) compile a list of Australian frog species known to be killed by cats. MethodsFor feral cats, we estimated the number of fro

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Şereflişan, Hülya, and Ahmet Alkaya. "Türkiye’de Eti Yenilebilen Kurbağaların (Ranidae) Biyolojisi, Ekonomisi, Avcılığı ve İhracatına Yönelik Yasal Mevzuatı." Turkish Journal of Agriculture - Food Science and Technology 4, no. 7 (2016): 600. http://dx.doi.org/10.24925/turjaf.v4i7.600-604.654.

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The frogs production is done on the basis of fully hunting, an important export product in Turkey. The frogs are almost no domestic consumption. The frogs are exported to France, Italy, Switzerland, Lebanon, Greece and Spain by five companies a processed form as live frog, frozen frog legs and chilled frog legs. In Turkey, some regulations related to hunting frogs and exports are prepared by under the Ministry of Agriculture and Rural Affairs General Directorate of Protection and Control. The hunting frogs is banned by 3/1 the Commercial Fisheries regulating the hunting notification. These pro

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12

Cao, Tu Cam, Huong Kim Huynh, and Kiem Van Nguyen. "TECHNICAL AND FINANCIAL ANALYSIS OF FROG CULTURE (Rana tigerina) AT TRA VINH PROVINCE." Scientific Journal of Tra Vinh University 1, no. 41 (2020): 97–103. http://dx.doi.org/10.35382/18594816.1.41.2020.648.

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This study was conducted through the direct interview of 90 households applying the alternative system of culturing frogs in Tra Vinh Province from 9/2020 to 3/2020. The study aimed to determine current status of frog farming. The collected data includes the technical and financial aspect of culturing frogs. The results showedthat there are two models of frog farming: culturing frogs in canvas (65.56% of households), and culturing frogs in cages (34.44% of households); Both models applied the same average farming area of 36.27 m2 with stocking density of 115 inds/m2. After 2.6 months of cultur

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13

McAlpine, Donald F. "Helminth communities in bullfrogs (Rana catesbeiana), green frogs (Rana clamitans), and leopard frogs (Rana pipiens) from New Brunswick, Canada." Canadian Journal of Zoology 75, no. 11 (1997): 1883–90. http://dx.doi.org/10.1139/z97-818.

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Twenty-three helminth species were identified from bullfrogs, Rana catesbeiana, green frogs, R. clamitans, and leopard frogs, R. pipiens, in New Brunswick. Digeneans dominated adult helminth communities in the aquatic bullfrog and semi-aquatic green frog; nematodes were dominant in the more terrestrial leopard frog. In green frogs and leopard frogs, richness and abundance were greatest in adults; in bullfrogs, juveniles showed the greatest richness and abundance. An increase in vertebrates in the diet of adult bullfrogs influences helminth communities in bullfrogs. Where Glypthelmins quieta an

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14

Akram, Ayesha, Muhammad Rais, Muhammad Saeed, Waseem Ahmed, Sumbul Gill, and Jibran Haider. "Movement Paradigm for Hazara Torrent Frog Allopaa hazarensis and Murree Hills Frog Nanorana vicina (Anura: Dicroglossidae)." Biodiversity Data Journal 10 (May 16, 2022): e84365. https://doi.org/10.3897/BDJ.10.e84365.

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Endemic anurans are particularly vulnerable to environmental changes, and are susceptible to population declines because of their restricted distribution ranges. The Murree Hills Frog <i>Nanorana vicina</i> and Hazara Torrent Frog <i>Allopaa hazarensis</i> are associated with the torrential streams and nearby clear water pools in subtropical chir pine forest and other forest types, at elevations higher than 1000 m in Pakistan. In this study, we have provided data on the extent of movement of these frog species for the first time. We installed radio transmitters on a total of 13 Murree Hills Fr

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15

Proença, Diogo Neves, Emanuele Fasola, Isabel Lopes, and Paula V. Morais. "Characterization of the Skin Cultivable Microbiota Composition of the Frog Pelophylax perezi Inhabiting Different Environments." International Journal of Environmental Research and Public Health 18, no. 5 (2021): 2585. http://dx.doi.org/10.3390/ijerph18052585.

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Microorganisms that live in association with amphibian skin can play important roles in protecting their host. Within the scenarios of global change, it is important to understand how environmental disturbances, namely, metal pollution, can affect this microbiota. The aim of this study is to recognize core bacteria in the skin cultivable microbiota of the Perez frog (Pelophylax perezi) that are preserved regardless of the environmental conditions in which the frogs live. The characterization of these isolates revealed characteristics that can support their contributions to the ability of frogs

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16

Džekčioriūtė, Vita. "Certain Aspects of Mythical Meaning of Frog in the Traditional Lithuanian Worldview." Tautosakos darbai 48 (December 10, 2014): 71–88. http://dx.doi.org/10.51554/td.2014.29097.

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The article is based on the traditional Lithuanian beliefs and customs recorded in the end of the 19th – first half of the 20th century. It aims at proving that frog in Lithuanian culture has its own unique realm of mythical meanings, which only partly correspond to those of the toad’s. In this realm, several groups of meanings associated with frog can be discerned. Firstly, frog is considered to be an accumulator of water in the popular meteorology. Its enhanced activity, its enlarged body or darkened color may indicate the approach of the rain. People used to believe that killing of a frog r

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17

Allen, Colin. "A Tale of Two Froggies." Canadian Journal of Philosophy Supplementary Volume 27 (2001): 104–15. http://dx.doi.org/10.1080/00455091.2001.10715998.

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There once was an ugly duckling. Except he wasn't a duckling at all, and once he realized his error he lived happily ever after. And there you have an early primer from the animal literature on the issue of misrepresentation – perhaps one of the few on this topic to have a happy ending.Philosophers interested in misrepresentation have turned their attention to a different fairy tale animal: the frog. No one gets kissed in this story and the controversial issue of self-recognition is avoided. There are simply some scientifically established facts about ways to get a frog to stick out its tongue

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18

Rhebergen, F., R. C. Taylor, M. J. Ryan, R. A. Page, and W. Halfwerk. "Multimodal cues improve prey localization under complex environmental conditions." Proceedings of the Royal Society B: Biological Sciences 282, no. 1814 (2015): 20151403. http://dx.doi.org/10.1098/rspb.2015.1403.

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Predators often eavesdrop on sexual displays of their prey. These displays can provide multimodal cues that aid predators, but the benefits in attending to them should depend on the environmental sensory conditions under which they forage. We assessed whether bats hunting for frogs use multimodal cues to locate their prey and whether their use varies with ambient conditions. We used a robotic set-up mimicking the sexual display of a male túngara frog ( Physalaemus pustulosus ) to test prey assessment by fringe-lipped bats ( Trachops cirrhosus ). These predatory bats primarily use sound of the

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Rhebergen, F., R. C. Taylor, M. J. Ryan, R. A. Page, and W. Halfwerk. "Multimodal cues improve prey localization under complex environmental conditions." Proceedings of the Royal Society B: Biological Sciences 282, no. 1814 (2015): 20151403. https://doi.org/10.5281/zenodo.13432869.

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(Uploaded by Plazi for the Bat Literature Project) Predators often eavesdrop on sexual displays of their prey. These displays can provide multimodal cues that aid predators, but the benefits in attending to them should depend on the environmental sensory conditions under which they forage. We assessed whether bats hunting for frogs use multimodal cues to locate their prey and whether their use varies with ambient conditions. We used a robotic set-up mimicking the sexual display of a male túngara frog ( Physalaemus pustulosus ) to test prey assessment by fringe-lipped bats ( Trachops cirrhosus

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20

Rhebergen, F., R. C. Taylor, M. J. Ryan, R. A. Page, and W. Halfwerk. "Multimodal cues improve prey localization under complex environmental conditions." Proceedings of the Royal Society B: Biological Sciences 282, no. 1814 (2015): 20151403. https://doi.org/10.5281/zenodo.13432869.

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(Uploaded by Plazi for the Bat Literature Project) Predators often eavesdrop on sexual displays of their prey. These displays can provide multimodal cues that aid predators, but the benefits in attending to them should depend on the environmental sensory conditions under which they forage. We assessed whether bats hunting for frogs use multimodal cues to locate their prey and whether their use varies with ambient conditions. We used a robotic set-up mimicking the sexual display of a male túngara frog ( Physalaemus pustulosus ) to test prey assessment by fringe-lipped bats ( Trachops cirrhosus

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Rhebergen, F., R. C. Taylor, M. J. Ryan, R. A. Page, and W. Halfwerk. "Multimodal cues improve prey localization under complex environmental conditions." Proceedings of the Royal Society B: Biological Sciences 282, no. 1814 (2015): 20151403. https://doi.org/10.5281/zenodo.13432869.

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(Uploaded by Plazi for the Bat Literature Project) Predators often eavesdrop on sexual displays of their prey. These displays can provide multimodal cues that aid predators, but the benefits in attending to them should depend on the environmental sensory conditions under which they forage. We assessed whether bats hunting for frogs use multimodal cues to locate their prey and whether their use varies with ambient conditions. We used a robotic set-up mimicking the sexual display of a male túngara frog ( Physalaemus pustulosus ) to test prey assessment by fringe-lipped bats ( Trachops cirrhosus

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22

Rhebergen, F., R. C. Taylor, M. J. Ryan, R. A. Page, and W. Halfwerk. "Multimodal cues improve prey localization under complex environmental conditions." Proceedings of the Royal Society B: Biological Sciences 282, no. 1814 (2015): 20151403. https://doi.org/10.5281/zenodo.13432869.

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(Uploaded by Plazi for the Bat Literature Project) Predators often eavesdrop on sexual displays of their prey. These displays can provide multimodal cues that aid predators, but the benefits in attending to them should depend on the environmental sensory conditions under which they forage. We assessed whether bats hunting for frogs use multimodal cues to locate their prey and whether their use varies with ambient conditions. We used a robotic set-up mimicking the sexual display of a male túngara frog ( Physalaemus pustulosus ) to test prey assessment by fringe-lipped bats ( Trachops cirrhosus

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23

Rhebergen, F., R. C. Taylor, M. J. Ryan, R. A. Page, and W. Halfwerk. "Multimodal cues improve prey localization under complex environmental conditions." Proceedings of the Royal Society B: Biological Sciences 282, no. 1814 (2015): 20151403. https://doi.org/10.5281/zenodo.13432869.

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(Uploaded by Plazi for the Bat Literature Project) Predators often eavesdrop on sexual displays of their prey. These displays can provide multimodal cues that aid predators, but the benefits in attending to them should depend on the environmental sensory conditions under which they forage. We assessed whether bats hunting for frogs use multimodal cues to locate their prey and whether their use varies with ambient conditions. We used a robotic set-up mimicking the sexual display of a male túngara frog ( Physalaemus pustulosus ) to test prey assessment by fringe-lipped bats ( Trachops cirrhosus

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Seburn, David C., and Kari Gunson. "Has the Western Chorus Frog (Pseudacris triseriata) Declined in Western Ottawa, Ontario?" Canadian Field-Naturalist 125, no. 3 (2011): 220. http://dx.doi.org/10.22621/cfn.v125i3.1224.

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To determine whether the Western Chorus Frog has declined in western Ottawa, we conducted auditory surveys at historical locations as well as at various other wetlands. Western Chorus Frogs were detected at 12 of 18 historical locations. Wetland habitat remained at all historical locations where the species was not detected. There was no difference in the year of historical records for sites where Western Chorus Frogs were (median 1987.5) and were not (median 1987.5) detected. In the present study, Western Chorus Frogs were also detected at 30 locations where they had not been previously repor

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Böswald, Linda F., Dana Matzek, Helen Mohr, Ellen Kienzle, and Bastian Popper. "Morphometrics of Xenopus laevis Kept as Laboratory Animals." Animals 12, no. 21 (2022): 2986. http://dx.doi.org/10.3390/ani12212986.

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Morphometric data that provide information on body conditions can be used to monitor the health and well-being of animals. In laboratory animals, they can help to evaluate the stress due to experiments or treatments, following the 3R principles. The aim of the present study was to obtain morphometric data of male and female African clawed frogs, Xenopus laevis, as the bases for body condition evaluations. Adult frogs (n = 198) were weighed and standardized photographs were taken. The photographs were used to determine several measurements (length, cranial width, caudal width, thigh width). In

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Nchang, Chrysanthus Simon Awafor Tamungang Patricia Bi asanga Fai. "Understanding habitat requirements for captive breeding and conservation of the Goliath frog in Cameroon." Sustainability and Biodiversity Conservation 3, no. 1 (2024): 63–77. https://doi.org/10.5281/zenodo.11123465.

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The Goliath frog came into prominence in the early 19<sup>th</sup> century, and to date, recent studies show that the ecology is still understudied. This study aims to determine major ecological and ethological patterns and their contributions to the abundance and breeding activity of the Goliath Frog<em>.</em> A descriptive ecological study was used in which data was collected on the ecological variables and the outcome (presence of frogs), used to describe associations (habitat characteristics) important in conservation and breeding. A non-probability purposive sampling technique was used, w

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Bonde, Joshua W., Peter A. Druschke, Richard P. Hilton, Amy C. Henrici, and Stephen M. Rowland. "Preservation of latest Cretaceous (Maastrichtian)—Paleocene frogs (Eorubeta nevadensis) of the Sheep Pass Formation of east-central Nevada and implications for paleogeography of the Nevadaplano." PeerJ 8 (July 3, 2020): e9455. http://dx.doi.org/10.7717/peerj.9455.

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Here we report on exceptional preservation of remains of the frog Eorubeta nevadensis in deposits of the Sheep Pass Formation, ranging from Late Cretaceous to Eocene, in the south Egan Range, Nevada. This formation represents a lacustrine basin within the Sevier retroarc hinterland. The formation is subdivided into six members (A–F); of interest here are members B and C. The base of member B is ?uppermost Cretaceous-Paleocene, while member C is Paleocene. Member B frogs are preserved in three taphonomic modes. Mode 1 frogs are nearly complete and accumulated under attritional processes, with f

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Flud, Gabrielle, Julie Angle, Monique N. Simon, and Daniel S. Moen. "Functional Frogs." American Biology Teacher 85, no. 8 (2023): 448–53. http://dx.doi.org/10.1525/abt.2023.85.8.448.

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Evolution by natural selection and adaptation are core concepts in biology that students must see and correctly understand their meaning. However, using these concepts in evidence-based learning strategies in the classroom is a difficult task. Here, we present a 5E lesson plan to address the Next Generation Science Standards performance expectation HS-LS4-4, to “construct an explanation based on evidence for how natural selection leads to adaptation of populations.” The Functional Frogs lesson provides multiple hands-on activities to engage students in the development of hypotheses, collection

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Tong, Qing, Xiao-peng Du, Zong-fu Hu, Li-yong Cui, and Hong-bin Wang. "Modelling the growth of the brown frog (Rana dybowskii)." PeerJ 6 (May 16, 2018): e4587. http://dx.doi.org/10.7717/peerj.4587.

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Well-controlled development leads to uniform body size and a better growth rate; therefore, the ability to determine the growth rate of frogs and their period of sexual maturity is essential for producing healthy, high-quality descendant frogs. To establish a working model that can best predict the growth performance of frogs, the present study examined the growth of one-year-old and two-year-old brown frogs (Rana dybowskii) from metamorphosis to hibernation (18 weeks) and out-hibernation to hibernation (20 weeks) under the same environmental conditions. Brown frog growth was studied and mathe

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Y.C, Ble, Ouattara Y.K, and Dadie A. "Isolation and Identification of Pathogenic Fungi from Editable Frog (Hoplobatrachus occipitalis) Captured in the Shallows Water of MAN City, Côte d’Ivoire." Journal of Advances in Microbiology 25, no. 6 (2025): 90–98. https://doi.org/10.9734/jamb/2025/v25i6952.

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Aims: Frogs are a popular source of protein in the western region of Côte d'Ivoire. But they are still caught in the natural environment in water of dubious quality that may contain pathogenic micro-organisms such as fungi. The aim of this study was to isolate and identify the fungal community present on frog skin. Study design: A frog sample was taken and fungi isolation and identification were performed. Place and Duration of Study: The study was carried out in Man (Western Côte d’Ivoire) during June to October 2024. Methodology: The method involved capturing frogs Hoplobatrachus occipitalis

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CHUAYNKERN, YODCHAIY, ANNEMARIE OHLER, CHANTIP INTHARA, PONNARIN KUMTONG, and ALAIN DUBOIS. "The Recent Distribution of Rana milleti Smith, 1921 in Mainland Southeast Asia with the First Record of Cambodia." Tropical Natural History 4, no. 1 (2004): 1–13. https://doi.org/10.58837/tnh.4.1.102901.

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Fourteen specimens of frogs are examined to clarify their identity. These frogs were collected from Cambodia (1 frog) and Thailand (13 frogs). All these frogs belong in Rana milleti Smith, 1921 the recent distribution of which is as follow: Cambodia: Phnom Aural in the Phnom Aural Wildlife Sanctuary, Kampong Speu Province, Southwest Cambodia; Thailand: Khao Yai, Nakhon Ratchasima Province, Ubon Ratchathani Province and Khao Ang Rui Ni Wildlife Sanctuary, Chachoengsao Province; Vietnam: Da Lat, Dran, Langbian Peak, Boun Luoi, Tram Lap and Kon Cha Rang.

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Folt, Brian, and Craig Guyer. "Habitat-dependent effects of predatory spiders on prey frogs in a Neotropical wet forest." Journal of Tropical Ecology 37, no. 5 (2021): 214–21. http://dx.doi.org/10.1017/s0266467421000274.

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AbstractIn seasonal wet Neotropical forests, many studies have suggested that species-rich terrestrial frog assemblages are regulated bottom-up by the abundance of leaf litter. However, terrestrial frogs are prey to a diverse community of predators, and no studies have tested for top-down effects of predators on this or other anuran assemblages. Here, we used an extensive field dataset to model the relative contribution of food resources, microhabitat resources and predators towards the occupancy and detection of two frog species (Craugastor bransfordii and Oophaga pumilio) at La Selva, Costa

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Hazell, Donna. "Frog ecology in modified Australian landscapes: a review." Wildlife Research 30, no. 3 (2003): 193. http://dx.doi.org/10.1071/wr02075.

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Frog decline in Australia has often occurred where habitat is relatively intact. Habitat alteration and loss do, however, threaten many species. Widespread degradation of aquatic and terrestrial systems has occurred since European settlement, with only 6.4% of Australia's landmass reserved for conservation. But what do we know about how frogs use modified Australian landscapes? Do wildlife managers have the information required to ensure that frog habitat is considered in the management and revegetation of these areas? This review examines published Australian research on frogs to determine kn

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Rowley, Jodi J. L., and Corey T. Callaghan. "The FrogID dataset: expert-validated occurrence records of Australia’s frogs collected by citizen scientists." ZooKeys 912 (February 17, 2020): 139–51. http://dx.doi.org/10.3897/zookeys.912.38253.

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This dataset represents expert-validated occurrence records of calling frogs across Australia collected via the national citizen science project FrogID (http://www.frogid.net.au). FrogID relies on participants recording calling frogs using smartphone technology, after which point the frogs are identified by expert validators, resulting in a database of georeferenced frog species records. This dataset represents one full year of the project (10 November 2017–9 November 2018), including 54,864 records of 172 species, 71% of the known frog species in Australia. This is the first instalment of the

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Rowley, Jodi J.L., and Corey T. Callaghan. "The FrogID dataset: expert-validated occurrence records of Australia's frogs collected by citizen scientists." ZooKeys 912 (February 17, 2020): 139–51. https://doi.org/10.3897/zookeys.912.38253.

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This dataset represents expert-validated occurrence records of calling frogs across Australia collected via the national citizen science project FrogID (http://www.frogid.net.au). FrogID relies on participants recording calling frogs using smartphone technology, after which point the frogs are identified by expert validators, resulting in a database of georeferenced frog species records. This dataset represents one full year of the project (10 November 2017–9 November 2018), including 54,864 records of 172 species, 71% of the known frog species in Australia. This is the first instalment of the

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Hoshina, Hideto. "Kajika Frogs (Buergeria buergeri) as Premium Pets During the Japanese Modern Monarchical Period." Ethnobiology Letters 11, no. 1 (2020): 96–102. http://dx.doi.org/10.14237/ebl.11.1.2020.1672.

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This study reviews articles about the prices of Kajika frogs (Buergeria buergeri) in eight Japanese newspapers published between 1884 and 1938. Frog prices have been converted to present-day United States dollars (US$). The frogs had a wide range of prices. Premium individuals, in particular, were often sold for US$1,000–2,000. In this paper, I discuss the reasons why exceptional individuals were traded at a high price in the market, although Kajika frogs were a common native species. Other topics, such as the presentation of frogs as gifts to royal families, are also discussed.

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CUNNINGHAM, A. A., A. D. HYATT, P. RUSSELL, and P. M. BENNETT. "Experimental transmission of a ranavirus disease of common toads (Bufo bufo) to common frogs (Rana temporaria)." Epidemiology and Infection 135, no. 7 (2007): 1213–16. http://dx.doi.org/10.1017/s0950268807007935.

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SUMMARYDuring investigations of epidemic frog mortality in Britain, a novel fatal systemic haemorrhagic disease of common toads was discovered. This disease resembles a systemic haemorrhagic disease of common frogs in Britain, which is one of a range of fatal disease syndromes, characterized by systemic haemorrhages, skin ulceration or a combination of these lesions, caused by ranavirus infection. Ranavirus previously isolated from diseased toads was inoculated into common frogs to evaluate if this virus could infect and cause disease in common frogs. All virus-inoculated frogs died with syste

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Folt, Brian, and Witold Lapinski. "New observations of frog and lizard predation by wandering and orb-weaver spiders in Costa Rica." Phyllomedusa: Journal of Herpetology 16, no. 2 (2017): 269. http://dx.doi.org/10.11606/issn.2316-9079.v16i2p269-277.

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Studies have suggested that predation by spiders may be an important force regulating life history in neotropical frogs and lizards, but detailed descriptions of predator-prey relationships are few. Here we describe novel observations where spiders contributed to the mortality of frogs and lizards in northeastern Costa Rica, and we corrected or clarified three identification errors of spiders from the literature. The most frequently observed predators were wandering spiders (Ctenidae), which seem to be generalist predators on frogs and lizards. An orb-weaver spider (Araneidae) also contributed

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Vargas-Salinas, Fernando, and Adolfo Amézquita. "Traffic noise correlates with calling time but not spatial distribution in the threatened poison frog Andinobates bombetes." Behaviour 150, no. 6 (2013): 569–84. http://dx.doi.org/10.1163/1568539x-00003068.

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Acoustically communicating species have evolved adaptations that allow them to transmit information and overcome signal masking where their habitat is disturbed by anthropogenic noise. To investigate whether calling behaviour or spatial distribution is related to road traffic noise we studied the poison frog Andinobates bombetes in a mid-elevation forest remnant that has been exposed to heavy traffic noise throughout more than four decades. To test whether frogs avoid call during noise episodes generated by passing trucks, we compared background noise levels between calling and non-calling tim

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Aihara, Ikkyu, Ryu Takeda, Takeshi Mizumoto, Takuma Otsuka, and Hiroshi G. Okuno. "Size Effect on Call Properties of Japanese Tree Frogs Revealed by Audio-Processing Technique." Journal of Robotics and Mechatronics 29, no. 1 (2017): 247–54. http://dx.doi.org/10.20965/jrm.2017.p0247.

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[abstFig src='/00290001/23.jpg' width='300' text='Calling behavior of a male Japanese Tree Frog' ] Sensing the external environment is a core function of robots and autonomous mechanics. This function is useful for monitoring and analyzing the ecosystem for our deeper understanding of the nature and accomplishing the sustainable ecosystem. Here, we investigate calling behavior of male frogs by applying audio-processing technique on multiple audio data. In general, male frogs call from their breeding site, and a female frog approaches one of the males by hearing their calls. First, we conducted

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Le, Diem Kieu, Thi Anh Thu Dang, and Quoc Nguyen Pham. "Production techniques and environmental management in frog farming in Dong Thap province." Dong Thap University Journal of Science 12, no. 5 (2023): 71–77. http://dx.doi.org/10.52714/dthu.12.5.2023.1074.

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This study surveyed 40 farmers on their production techniques and environmental management in frog farming in Cao Lanh and Thap Muoi district, Dong Thap province, and the results showed that frogs were cultured in tarpaulin tanks (82.5%), hapas in an earth pond (35%), and earth ponds (2.5%). Most of the farmers (82.5%) had a combination of breeding frogs and production frogs to be self-sufficient froglet. Stocking density is high with 146.3±92.3 individuals/m2 for production frogs and 51.6±35.7 individuals/m2 for breeding frogs. The culture duration of froglet was an average of 33.6±8.8 days/c

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Withers, Philip C. "Evaporative water loss and the role of cocoon formation in Australian frogs." Australian Journal of Zoology 46, no. 5 (1998): 405. http://dx.doi.org/10.1071/zo98013.

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Measurements of evaporative water loss (EWL; mg min-1) and resistance (R; sec cm-1) for various Australian frogs indicate three general allometric patterns: non-cocooned and non-‘waterproof’ frogs with EWL ∝ Mass0.30 and R independent of body mass at about 1–3 sec cm-1, cocooned frogs with EWL reduced about 50–200-fold and R about 50–200 sec cm-1, and ‘waterproof’ frogs with EWL reduced about 5–100- fold and R about 5–100 sec cm-1. Cocooned frogs have an exponential reduction in EWL and fairly linear increase in R over time, corresponding to the temporal addition of layers to the cocoon. The b

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Ma, Yunshuang, Anran Yu, Liangliang Zhang, and Rongquan Zheng. "Effects of Rice–Frog Co-Cropping on the Soil Microbial Community Structure in Reclaimed Paddy Fields." Biology 13, no. 6 (2024): 396. http://dx.doi.org/10.3390/biology13060396.

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Utilizing and improving the productivity of reclaimed land are highly significant for alleviating the problem of food production shortage in China, and the integrated rice–frog farming model can improve soil fertility. However, there are few studies on the use of integrated rice–frog farming technology to improve the fertility of reclaimed land and increase its efficiency in food production. Therefore, this study was conducted to evaluate the effects of the rice–frog co-cropping mode on the soil fertility and microbial diversity of reclaimed land. A rice monoculture group (SF), low-density ric

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LaDouceur, Elise E. B., Amanda M. Hauck, Michael M. Garner, Andrew N. Cartoceti, and Brian G. Murphy. "Odontomas in Frogs." Veterinary Pathology 57, no. 1 (2019): 147–50. http://dx.doi.org/10.1177/0300985819877633.

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Odontomas are variably differentiated, hamartoma-like proliferations of odontogenic epithelium, pulp ectomesenchyme (odontoblasts), and dental matrix. Frogs are polyphyodont and homodont. Their teeth also differ from mammals in that they are restricted to the upper jaw in adults and lack a periodontal ligament and cementum, attaching directly to the underlying bone. Odontomas were identified in an African clawed frog ( Xenopus laevis), a false tomato frog ( Dyscophus guineti), and a tomato frog of unknown species ( Dyscophus sp.). All of the examined odontomas were composed of numerous tooth-l

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Griffin, Christine T. "Oswaldocruzia filiformis (Nematoda: Trichostrongyloidea) in frogs (Rana temporaria) from three locations in Ireland." Journal of Helminthology 63, no. 1 (1989): 53–62. http://dx.doi.org/10.1017/s0022149x00008737.

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ABSTRACTA total of 444 adult frogs (Rana temporaria) were obtained from three sites in the east of Ireland. Oswaldocruzia filiformis was present at all times of the year; overall, 64% of the frogs were infected, with a mean burden of 5 worms/frog. Most of the parasites were in the first half of the small intestine. A single gross lesion associated with a high worm burden is described. Female parasites were more abundant than males. Most parasitic stages of O. filiformis overwintered in hibernating hosts. Seasonal patterns in the levels of parasitization were not discerned. The intensity of inf

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DEKA, ELVY QUATRIN, and RAMLAH ZAINUDIN. "ADVERTISEMENT CALL CHARACTERISTICS OF MALE SARAWAK FROGS (FAMILY RANIDAE)." JOURNAL OF SUSTAINABILITY SCIENCE AND MANAGEMENT 20, no. 2 (2025): 364–89. https://doi.org/10.46754/jssm.2025.02.012.

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The family Ranidae of Sarawak frogs comprises the genera Hylarana, Pulchrana, Abavorana, Chalcorana, Staurois, Meristogenys, Odorrana, and Huia. Studies revealed that the advertisement call characteristics emitted by male frogs vary in different species. This study aims to describe the characteristics of the male frogs in the advertisement call and analyse the call characters that are useful for species discrimination. Field samplings were conducted to record the frog calls for the sound call characteristic analysis. The findings indicate that advertisement call characteristics could discrimin

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Sleigh, Charlotte. "Jan Swammerdam's frogs." Notes and Records of the Royal Society 66, no. 4 (2012): 373–92. http://dx.doi.org/10.1098/rsnr.2012.0039.

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Having discussed insect metamorphosis at length, Jan Swammerdam's Bybel der Natuure (1679/1737) reached its climax with a substantial description of the generation and muscular activity of frogs. This paper explores the rhetorical role of frogs in Swammerdam's ‘great work’, showing how they were the Archimedean point from which he aimed to reorder all of creation—from insects to humans—within one glorious, God-ordained natural history and philosophy. Swammerdam linked insects to frogs through a demonstration that all underwent epigenesis; and frogs were then linked to humans through a demonstr

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Costanzo, Jon P., and Richard E. Lee Jr. "Cryoprotectant production capacity of the freeze-tolerant wood frog, Rana sylvatica." Canadian Journal of Zoology 71, no. 1 (1993): 71–75. http://dx.doi.org/10.1139/z93-011.

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Freezing survival of the wood frog (Rana sylvatica) is enhanced by the synthesis of the cryoprotectant glucose, via liver glycogenolysis. Because the quantity of glucose mobilized during freezing bears significantly on the limit of freeze tolerance, we investigated the relationship between the quantity of liver glycogen and the capacity for cryoprotectant synthesis. We successfully augmented natural levels of liver glycogen by injecting cold-conditioned wood frogs with glucose. Groups of 8 frogs having mean liver glycogen concentrations of 554 ± 57 (SE), 940 ± 57, and 1264 ± 66 μmol/g cataboli

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Miura, Ikuo, Vladimir Vershinin, Svetlana Vershinina, et al. "Hybridogenesis in the Water Frogs from Western Russian Territory: Intrapopulation Variation in Genome Elimination." Genes 12, no. 2 (2021): 244. http://dx.doi.org/10.3390/genes12020244.

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Hybridogenesis in an interspecific hybrid frog is a coupling mechanism in the gametogenic cell line that eliminates the genome of one parental species with endoduplication of the remaining genome of the other parental species. It has been intensively investigated in the edible frog Pelophylax kl. esculentus (RL), a natural hybrid between the marsh frog P. ridibundus (RR) and the pool frog P. lessonae (LL). However, the genetic mechanisms involved remain unclear. Here, we investigated the water frogs in the western Russian territory. In three of the four populations, we genetically identified 1

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Rocha, Carlos F. D., Davor Vrcibradic, Mara C. Kiefer, et al. "Parameters from the community of leaf-litter frogs from Estação Ecológica Estadual Paraíso, Guapimirim, Rio de Janeiro State, southeastern Brazil." Anais da Academia Brasileira de Ciências 83, no. 4 (2011): 1259–68. http://dx.doi.org/10.1590/s0001-37652011005000036.

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We studied the leaf-litter frog community of Estação Ecológica Estadual Paraíso, in Guapimirim, Rio de Janeiro State, southeastern Brazil. Herein we combined three sampling methods (large plots, visual encounter surveys and pit-fall traps) to present data on species composition, richness, relative abundance and densities. The local assemblage of frogs associated to the leaf-litter was composed by 14 species, belonging to nine families. Haddadus binotatus, a direct-developing frog, was the most abundant species in the community. The estimated density of the local leaf-litter frog assemblage bas

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