Current Herpetology最新文献_第8页

Relative Abundance Differences of Two Invasive Toad Species on Minami-Daito and Kita-Daito Islands, Japan 日本南大东岛和北大东岛两种入侵蟾蜍的相对丰度差异

IF 0.7 4区生物学

Current Herpetology Pub Date : 2020-02-27 DOI: 10.5358/hsj.39.38

H. Komine, Bruna Elisa Trentin, S. Koike

{"title":"Relative Abundance Differences of Two Invasive Toad Species on Minami-Daito and Kita-Daito Islands, Japan","authors":"H. Komine, Bruna Elisa Trentin, S. Koike","doi":"10.5358/hsj.39.38","DOIUrl":"https://doi.org/10.5358/hsj.39.38","url":null,"abstract":"Abstract: Biological invasions are major threats to global biodiversity, and island ecosystems are especially vulnerable. Many previous studies have reported the presence of invasive species on islands, but relatively few studies have quantified the population status of such species. Furthermore, multiple invasive species are often introduced to the same region or island. In such case, quantifying the relative abundance of each species would provide us with significant insight into their population dynamics and potential species interactions. Rhinella marina and Bufo gargarizans miyakonis were introduced to both Minami-daito and Kita-daito Islands before 1945. Although some studies have reported their invasion and establishment, few studies have quantified their relative abundance. To reveal their relative abundance, we set 5 km line transects and counted the number of each species from 11 to 31 July 2019. We applied generalized linear models to examine the relationship between the number of individuals observed with species and environmental factors. We also applied these models to examine the relationship between the number of individuals observed with island and environmental factors. We found the relative abundance of R. marina was significantly higher than that of B. g. miyakonis on Minami-daito Island. This is the opposite pattern of 30 years ago, suggesting the population dynamics of these invasive toads is unstable on Minami-daito Island. Although B. g. miyakonis was found on both islands, no individual of R. marina was found on Kita-daito Island. The population dynamics may depend on environmental differences between islands and ecological differences between species. Future studies are needed to reveal the potential factors determining the differences in relative abundance between islands and between species.","PeriodicalId":56053,"journal":{"name":"Current Herpetology","volume":"39 1","pages":"38 - 46"},"PeriodicalIF":0.7,"publicationDate":"2020-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43949381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sexual Dimorphism and Reproductive Characteristics of the Cozumel Spiny Lizard, Sceloporus cozumelae (Squamata: Phrynosomatidae) from Mexico 墨西哥cozumelae棘蜥的两性异形及生殖特征

IF 0.7 4区生物学

Current Herpetology Pub Date : 2020-02-27 DOI: 10.5358/hsj.39.19

A. Ramírez‐Bautista, Raciel Cruz‐Elizalde, Dulce María Galván-Hernández, Uriel Hernández‐Salinas, Christian Berriozabal-Islas

{"title":"Sexual Dimorphism and Reproductive Characteristics of the Cozumel Spiny Lizard, Sceloporus cozumelae (Squamata: Phrynosomatidae) from Mexico","authors":"A. Ramírez‐Bautista, Raciel Cruz‐Elizalde, Dulce María Galván-Hernández, Uriel Hernández‐Salinas, Christian Berriozabal-Islas","doi":"10.5358/hsj.39.19","DOIUrl":"https://doi.org/10.5358/hsj.39.19","url":null,"abstract":"Abstract: We analyzed sexual dimorphism and reproductive characteristics (minimum size at sexual maturity, clutch size, and reproductive period) of females and males of Sceloporus cozumelae, a species endemic to the Yucatan Peninsula, Mexico, and which belongs to the Sceloporus variabilis group. Sexual dimorphism was recorded, with the males being larger in snout–vent length, head length, head width, forearm length, and tibia length. The average clutch size was 3.4. Females containing eggs and vitellogenic follicles were observed at the same time, indicating that the population produces at least two clutches annually. Minimum size at sexual maturity was similar for both sexes (40 mm), and reproduction, determined according to the months in which gonads were obtained, was synchronous between males and females. The species shows high similarity to populations of S. variabilis in sexual dimorphism and reproductive characteristics; however, it has smaller snout–vent length when compared to other populations of S. variabilis in Mexico.","PeriodicalId":56053,"journal":{"name":"Current Herpetology","volume":"39 1","pages":"19 - 27"},"PeriodicalIF":0.7,"publicationDate":"2020-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43204491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A Specimen of Karsenia koreana (Caudata: Plethodontidae) Misidentified as Hynobius leechii 27 Years before the Species' Description and Additional Historical Record koreana Karsenia（尾科：Plethodontidae）的一个标本在物种描述和附加历史记录前27年被误认为水蛭

IF 0.7 4区生物学

Current Herpetology Pub Date : 2020-02-27 DOI: 10.5358/hsj.39.75

Yucheol Shin, Y. Jang, Taewoo Kim, Amaël Borzée

引用次数: 1

Spatial Ecology of the Introduced Chinese Water Dragon Physignathus cocincinus in Hong Kong 引种中国水龙(Physignathus coccinus)在香港的空间生态

IF 0.7 4区生物学

Current Herpetology Pub Date : 2020-02-27 DOI: 10.5358/hsj.39.55

Wai-Ho Chan, A. Lau, P. Martelli, Daniel C W Tsang, Wing‐Ho Lee, Yik‐Hei Sung

引用次数: 1

Temporal Changes in Number of Breeding Individuals of the Amami Tip-Nosed Frog 奄美尖鼻蛙繁殖个体数量的时间变化

IF 0.7 4区生物学

Current Herpetology Pub Date : 2020-02-27 DOI: 10.5358/hsj.39.13

H. Komine, Bruna Elisa Trentin

{"title":"Temporal Changes in Number of Breeding Individuals of the Amami Tip-Nosed Frog","authors":"H. Komine, Bruna Elisa Trentin","doi":"10.5358/hsj.39.13","DOIUrl":"https://doi.org/10.5358/hsj.39.13","url":null,"abstract":"Abstract: Amami tip-nosed frog (Odorrana amamiensis) is an endangered species endemic to Amami-Oshima Island and Tokunoshima Island, in Japan. This species is threatened by invasive species and habitat destruction. Although action is needed to protect them, the breeding ecology of O. amamiensis is poorly understood. A better understanding of its breeding ecology would contribute to conservation efforts. This study reports temporal changes in number of O. amamiensis breeding individuals in Kinsakubaru area, Amami-Oshima Island from the 28 Nov. 2015 to the 5 Dec. 2015. A 20 m transect line was set at a stream to count the number of O. amamiensis individuals at night and during daytime for eight days. Over 200 individuals were observed and many of them were breeding with lively mating calls around the small stream at night for three days. The high density of individuals decreased rapidly afterwards. This is the first report quantifying the temporal changes in number of breeding individuals of O. amamiensis. The species is usually nocturnal, but some individuals were observed at breeding sites during the daytime as well. Field research on O. amamiensis is usually conducted at night, but it can be risky because the nocturnal poisonous snake Habu (Protobothrops flavoviridis) also inhabits Amami-Oshima Island. The results suggested that field research during daytime was relatively safer and perhaps an easier approach to find breeding sites of O. amamiensis compared to searching at night.","PeriodicalId":56053,"journal":{"name":"Current Herpetology","volume":"39 1","pages":"13 - 18"},"PeriodicalIF":0.7,"publicationDate":"2020-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41720593","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Morphological Re-Examination of the Endemic Paraguayan Snake Phalotris nigrilatus Ferrarezzi, 1993 (Serpentes: Colubridae: Elapomorphini), with Notes on Its Ecology and Conservation Status 巴拉圭特有蛇Phalotris nigratus Ferrarezzi，1993（蛇科：蛇科：Elapomorphini）的形态学再研究及其生态和保护现状

IF 0.7 4区生物学

Current Herpetology Pub Date : 2020-02-27 DOI: 10.5358/hsj.39.28

Pier Cacciali, G. Mee, A. Laing, Danilo Krause, Chloee McLaughlin, Ryan Montgomery, Paul A. Smith

引用次数: 2

Development of 22 Microsatellite Markers for Assessing Hybridization in the Genus Gekko (Squamata: Gekkonidae) 22个小卫星标记在壁虎属(鳞目:壁虎科)杂交鉴定中的应用

IF 0.7 4区生物学

Current Herpetology Pub Date : 2020-02-27 DOI: 10.5358/hsj.39.66

Kota Okamoto, Takaki Kurita, M. Nagano, Yukuto Sato, H. Aoyama, Seikoh Saitoh, N. Shinzato, M. Toda

引用次数: 0

Ecology of Xenosaurus fractus (Squamata: Xenosauridae) from Sierra Nororiental, Puebla, Mexico 墨西哥普埃布拉北卡罗来纳地区裂口异角龙的生态学研究

IF 0.7 4区生物学

Current Herpetology Pub Date : 2020-02-27 DOI: 10.5358/hsj.39.1

G. Woolrich-Piña, Geoffrey R. Smith, J. Lemos‐Espinal, Sonia Márquez-Guerra, Adán Alvarado-Hernández, Juan C. García-Montiel

{"title":"Ecology of Xenosaurus fractus (Squamata: Xenosauridae) from Sierra Nororiental, Puebla, Mexico","authors":"G. Woolrich-Piña, Geoffrey R. Smith, J. Lemos‐Espinal, Sonia Márquez-Guerra, Adán Alvarado-Hernández, Juan C. García-Montiel","doi":"10.5358/hsj.39.1","DOIUrl":"https://doi.org/10.5358/hsj.39.1","url":null,"abstract":"Abstract: Lizards in the genus Xenosaurus are crevice-dwelling lizards. Their crevice-dwelling habit may constrain their ecology; thus one might predict there could be limited variation in several ecological traits among species. Here we report on aspects of the ecology of the recently described Xenosaurus fractus from the Sierra Nororiental of Puebla, Mexico and compare it to other species of Xenosaurus. Mean body temperature of X. fractus was 19.67°C. Body temperature was related to air temperature and substrate temperature. We found no difference in thermal ecology between males and females. Crevice use was not related to the individual's body size, nor did male and females differ in crevice use. Crevice characteristics had limited effects on body temperature. Sexual size dimorphism was not present in body size or head size, except for dimorphism in the relative growth of head width with snout-vent length. Xenosaurus fractus ate mostly insects, with caterpillars the most important prey. In conclusion, the ecology of X. fractus is similar to other species of Xenosaurus in many ways. Of particular interest is the observation that X. fractus does not appear to be any more similar to its sister species X. tzacualtepantecus than it is to other species of Xenosaurus.","PeriodicalId":56053,"journal":{"name":"Current Herpetology","volume":"39 1","pages":"1 - 12"},"PeriodicalIF":0.7,"publicationDate":"2020-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48758247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Origins of Nonnative Populations of Bufo japonicus formosus (Amphibia: Bufonidae) in Hokkaido, Japan, as Inferred by a Molecular Approach 日本北海道外生Bufo japonicus formosus(两栖纲:buonidae)种群起源的分子分析

IF 0.7 4区生物学

Current Herpetology Pub Date : 2020-02-27 DOI: 10.5358/hsj.39.47

D. Suzuki, T. Kawase, T. Hoshina, Tatsuhiro Tokuda

{"title":"Origins of Nonnative Populations of Bufo japonicus formosus (Amphibia: Bufonidae) in Hokkaido, Japan, as Inferred by a Molecular Approach","authors":"D. Suzuki, T. Kawase, T. Hoshina, Tatsuhiro Tokuda","doi":"10.5358/hsj.39.47","DOIUrl":"https://doi.org/10.5358/hsj.39.47","url":null,"abstract":"Abstract: The Eastern-Japanese common toad, Bufo japonicus formosus, is distributed from southern Hokkaido to Kinki district of northeastern Honshu, Japan. However, Hokkaido populations are suspected to be nonnative and derived from relatively recent artificial introduction from Honshu. To clarify the origin of Hokkaido populations, we analyzed sequence variations of the mitochondrial cytochrome b gene in the toads from Hokkaido and compared the sequence data from previous studies. We obtained ten haplotypes from six sites on Hokkaido. Samples from the sites located along Ishikari river system, Asahikawa, Ebetsu, and Ishikari cities, had six haplotypes. Only one haplotype was obtained in Sapporo city and it was genetically far from Ishikari river's ones. Hakodate and Muroran cities samples had one and two haplotypes, respectively. All ten haplotypes from Hokkaido were genetically identical or close to haplotype data from Kanto district or Shizuoka Prefecture, mid-eastern Honshu, far from Hokkaido. Therefore, the toad populations of Hokkaido were considered to be nonnative and multiple introductions from eastern Honshu to Hokkaido were implied.","PeriodicalId":56053,"journal":{"name":"Current Herpetology","volume":"39 1","pages":"47 - 54"},"PeriodicalIF":0.7,"publicationDate":"2020-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49278217","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Signal Synchrony and Alternation Among Neighbor Males in a Japanese Stream Breeding Treefrog, Buergeria japonica 日本溪流养殖三花蟾蜍相邻雄性信号的同步性和交替性

IF 0.7 4区生物学

Current Herpetology Pub Date : 2020-02-27 DOI: 10.5358/hsj.39.80

Henry D. Legett, Ikkyu Aihara, X. Bernal

{"title":"Signal Synchrony and Alternation Among Neighbor Males in a Japanese Stream Breeding Treefrog, Buergeria japonica","authors":"Henry D. Legett, Ikkyu Aihara, X. Bernal","doi":"10.5358/hsj.39.80","DOIUrl":"https://doi.org/10.5358/hsj.39.80","url":null,"abstract":"Abstract: Animals that aggregate in leks to attract mates often time the production of their mating signals against the signals of neighboring conspecifics. Such signal timing usually falls into general patterns within these aggregations, which can be categorized based on the amount of overlap between the signals. In many species, individuals produce signals in an alternating pattern, avoiding signal overlap to reduce interference and increase mate attraction. In contrast, individuals in some species produce signals in synchrony, maximizing overlap and interference. The prevalence and function of signal synchronization is still unknown in many species. Here we examine the call timing strategies of the Ryukyu Kajika frog (Buergeria japonica). Using acoustic playback experiments we characterize a divergence in timing patterns between the two call types in this species, one produced in alternation and one in synchrony. Specifically, male B. japonica responded to playbacks of the first call type (Type I calls) with delayed Type I calls, avoiding overlap with the playbacks. In contrast, males responded to playbacks of the second call type (Type II calls) with synchronized Type II calls, overlapping their calls with the playbacks. Such variation in temporal signaling strategies within a species provides insights into how social and environmental pressures shape signal timings.","PeriodicalId":56053,"journal":{"name":"Current Herpetology","volume":"39 1","pages":"80 - 85"},"PeriodicalIF":0.7,"publicationDate":"2020-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46320447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2