Current Herpetology最新文献_第6页

The Reproductive Characteristics of the First-generation Hybrid Derived from Three Introduced Purebred Crocodile Species 三种引进的纯种鳄鱼第一代杂种的繁殖特性

IF 0.7 4区生物学

Current Herpetology Pub Date : 2022-02-24 DOI: 10.5358/hsj.41.101

Wentian Wei, Ting Li, Bo Yao, Guangwei Fan, Huabin F. Zhang, T. Pan, Pingshin Lee, Haitao Nie, P. Yan, Jingwang Xu, Xiaobing Wu

{"title":"The Reproductive Characteristics of the First-generation Hybrid Derived from Three Introduced Purebred Crocodile Species","authors":"Wentian Wei, Ting Li, Bo Yao, Guangwei Fan, Huabin F. Zhang, T. Pan, Pingshin Lee, Haitao Nie, P. Yan, Jingwang Xu, Xiaobing Wu","doi":"10.5358/hsj.41.101","DOIUrl":"https://doi.org/10.5358/hsj.41.101","url":null,"abstract":"Abstract: The objective of the present study was to explore the reproductive characteristics of the first-generation hybrid crocodile derived from captive Crocodylus siamensis, C. niloticus and C. porosus introduced from Cambodia, South Africa, and Malaysia. The data for 789 eggs and 651 hatchlings in 26 nests of hybrids of three different crocodile species were collected. Statistical analysis of reproductive variables of hybrid crocodile eggs indicated that the characteristic variables were normally distributed except for the hatching rate. Regression analyses were used to develop the linear equation between egg length, egg width, hatching rate, hatchling weight, and egg mass. The results found a significant correlation between egg mass and other traits except for egg shape index. Significant influences of egg mass and the egg shape index on hatching rate were detected. There was no significant linear relationship between clutch size and egg characteristics. There were several differences in the reproductive characteristic variables between hybrid crocodiles of C. niloticus×C. siamensis and their parental species bred in captivity (variables of the hybrid were generally smaller) and between C. siamensis×C. porosus and their parental species (variables of the hybrid were generally larger). However, there was no difference in the reproductive variables between hybrid crocodiles of C. niloticus×C. porosus and their parental species. These results indicate that careful and rigorous scientific assessments are required on the hybridization of endangered species in particular to fully consider the effects of human intervention on hybridization.","PeriodicalId":56053,"journal":{"name":"Current Herpetology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42757464","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

Phylogeny of Courtship and Male-male Combat Behavior in Snakes: An Updated Analysis 蛇的求偶关系与雄性战斗行为的系统发育——最新分析

IF 0.7 4区生物学

Current Herpetology Pub Date : 2022-02-24 DOI: 10.5358/hsj.41.35

P. Senter

{"title":"Phylogeny of Courtship and Male-male Combat Behavior in Snakes: An Updated Analysis","authors":"P. Senter","doi":"10.5358/hsj.41.35","DOIUrl":"https://doi.org/10.5358/hsj.41.35","url":null,"abstract":"Abstract: To elucidate phylogenetic patterns in courtship and male-male combat (MMC) behaviors in snakes, I plotted behavioral characters (BCs) onto phylogenetic trees of snakes. For courtship, I plotted 33 BCs onto a phylogenetic tree of 155 snake species in 12 families. For MMC, I plotted 21 BCs onto a phylogenetic tree of 128 snake species in 11 families. For courtship, results suggest the following. Spur Contact and Spur Movement are ancestral for the clade Pythonidae+Boidae and were present as early as the Paleocene Epoch. The Jerk, Chin-Rub, and Dorsal Advance are ancestral for the clade Endoglyptodonta and were present by the late Oligocene. A coital Bite was added in the colubrid clade Zamenis+Lampropeltini by the early Miocene. For MMC, results suggest the following. The Coil, Hook, Type 2 Head Raise, and Downward Push are ancestral for the clade Afrophidia and were present by the early Paleocene. The Type 1 Head Raise replaced the Type 2 Head Raise in Micrurus by the mid-Miocene and in the Lampropeltini by the early Miocene. In the Lampropeltini, Body Bowing was added and Pinning the Head replaced the Type 2 Head Raise by the early Miocene. In addition to written literature, this study utilized a large amount of documentation in the form of video footage on YouTube. For many species, the footage documents behaviors that were unrecorded in the written literature. The results demonstrate that social media can be a highly useful data source in the scientific study of animal behavior.","PeriodicalId":56053,"journal":{"name":"Current Herpetology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2022-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48734956","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: 1

Raccoon Predation on Foam Nests and Adults of the Forest Green Tree Frog (Zhangixalus arboreus: Rhacophoridae) in Central Japan 日本中部森林绿树蛙泡沫巢和成虫对浣熊的捕食

IF 0.7 4区生物学

Current Herpetology Pub Date : 2021-08-25 DOI: 10.5358/hsj.40.129

Yukio Ichioka, N. Hijii

引用次数: 0

Spawning sites of the Japanese Forest Green Tree Frog (Zhangixalus arboreus: Rhacophoridae) in Central Japan 日本中部日本森林绿树蛙(树蛙科)的产卵地点

IF 0.7 4区生物学

Current Herpetology Pub Date : 2021-08-25 DOI: 10.5358/hsj.40.151

Yukio Ichioka, N. Hijii

{"title":"Spawning sites of the Japanese Forest Green Tree Frog (Zhangixalus arboreus: Rhacophoridae) in Central Japan","authors":"Yukio Ichioka, N. Hijii","doi":"10.5358/hsj.40.151","DOIUrl":"https://doi.org/10.5358/hsj.40.151","url":null,"abstract":"Abstract: We conducted field observations of spawning sites of the Japanese forest green tree frog (Zhangixalus arboreus: Rhacophoridae) at four ponds for two years. In 2019, a total of 50 foam nests were made on trees (77%), whereas 15 foam nests were made on the ground (23%). In 2020, 65 nests were arboreal (97%) and there were only two ground nests (3%). About 70% of all ground nests deteriorated or disappeared without their eggs hatching, mostly because of predation. In contrast, only about 4% of all arboreal nests died because of desiccation and 27% died mainly of outside spawning and disappearance before egg hatching for any reason. The relative proportions of arboreal versus ground spawning sites differed significantly between 2019 and 2020. Ground spawning was scarcely observed in 2020; in that year the amount of precipitation during the reproductive period was about 1.5 times that in 2019. Our field experiment using paper-clay models confirmed that arboreal nests were more susceptible to desiccation than ground nests. These results suggest that ground spawning may be of some advantage in resistance to desiccation, whereas arboreal spawning may be less susceptible to predation of foam nests.","PeriodicalId":56053,"journal":{"name":"Current Herpetology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42128196","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

Selective Oviposition by Oriental Fire-bellied Toads in Temporally Fluctuating Environments 东方火腹蟾蜍在时间波动环境中的选择性产卵

IF 0.7 4区生物学

Current Herpetology Pub Date : 2021-08-25 DOI: 10.5358/hsj.40.120

Seungkyun Baek, Minhyun Lee, Yongsu Kim, Sangryong Bae, U. Song, Chang-Ku Kang

{"title":"Selective Oviposition by Oriental Fire-bellied Toads in Temporally Fluctuating Environments","authors":"Seungkyun Baek, Minhyun Lee, Yongsu Kim, Sangryong Bae, U. Song, Chang-Ku Kang","doi":"10.5358/hsj.40.120","DOIUrl":"https://doi.org/10.5358/hsj.40.120","url":null,"abstract":"Abstract: Selective oviposition is widespread in anurans because it significantly affects the survivorship of their offspring, especially when environmental conditions are heterogeneous and potentially unfavorable. In the present study, we aimed to determine whether female oriental fire-bellied toads (Bombina orientalis) selectively lay eggs to increase their progeny's survival. We studied the Jeju Island population because the streams on this island are ephemeral, so the timing and site of egg-laying can be important for the survival of their progeny. We surveyed all pools in a specific area of an ephemeral stream for two years to determine whether female B. orientalis selectively lay eggs in certain pools to increase their progeny's survival. The characteristics of pools in our study sites varied especially in size that ranged from 0.01 to 36 m2 in surface area. We found that female B. orientalis avoid laying eggs in very small pools where the risk of desiccation or over-heating of water is high. However, unexpectedly, they also avoided large pools and primarily laid eggs in the pools that are not very small or large. In terms of timing, egg-laying took place in association with the timing of rain: the number of pools with egg clutches decreased as the number of days since the last rainfall increased. Females also avoided laying eggs in pools that were already occupied by tadpoles. Field experiments demonstrated that the degree of cannibalism on eggs by conspecific tadpoles is intense in this species. These findings collectively indicate that B. orientalis that live in a fluctuating environment show complicated oviposition behavior that mediate both desiccation and cannibalism risks.","PeriodicalId":56053,"journal":{"name":"Current Herpetology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43784115","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: 1

Normal Development of an Aquatic Spawning Tree Frog, Buergeria japonica (Amphibia: Rhacophoridae) 水生产卵树蛙Buergeria japonica的正常发育（两栖纲：鼠科）

IF 0.7 4区生物学

Current Herpetology Pub Date : 2021-08-25 DOI: 10.5358/hsj.40.169

S. Kuroshima, A. Tominaga

引用次数: 0

The First Comprehensive Description of the Normal Development of Annandale's High Altitude Frog, Kurixalus naso (Annandale, 1912) 首次全面描述安南代尔高原蛙的正常发育，Kurixalus naso(安南代尔，1912)

IF 0.7 4区生物学

Current Herpetology Pub Date : 2021-08-25 DOI: 10.5358/hsj.40.137

P. W. Shangpliang, Ricaldo Shadap, Rupa Nylla K. Hooroo, Susan Jones Nongkynrih, Mattilang Kharkongor, Duwaki Rangad, Ronald Kupar Lyngdoh Tron

{"title":"The First Comprehensive Description of the Normal Development of Annandale's High Altitude Frog, Kurixalus naso (Annandale, 1912)","authors":"P. W. Shangpliang, Ricaldo Shadap, Rupa Nylla K. Hooroo, Susan Jones Nongkynrih, Mattilang Kharkongor, Duwaki Rangad, Ronald Kupar Lyngdoh Tron","doi":"10.5358/hsj.40.137","DOIUrl":"https://doi.org/10.5358/hsj.40.137","url":null,"abstract":"Abstract: The discrimination of developmental stages of anurans is of critical importance in understanding the morphological characteristics of each specific stage of tadpoles. Unlike most rhacophorids which construct foam nest during egg deposition, Kurixalus naso shows no foam formation during oviposition. This rhacophorid displays a unique oviposition whereby the eggs are laid in the moist soil under burrows and mixed with the loose top layer of the soil giving those eggs a seed-like appearance. The present study highlighted and documented the developmental stages of Kurixalus naso until complete metamorphosis. A normal developmental table consisting of 46 developmental stages was proposed for Kurixalus naso. Stages of development and metamorphosis of Kurixalus naso were divided into 11 major developmental terms, each consisting of a number of successive stages: fertilization (stages 1–2), cleavage-blastula (stages 3–9), gastrula (stages 10–12), neurula (stages 13–16), tail bud stages (stages 17–20), external gill stages (stages 21–22), operculum and oral disc stages (stages 23–25), hind limb bud formation (stages 26–30), toe differentiation and development (stages 31–39), well-developed hind limb (stages 40–41) and metamorphosis (stages 42–46). The embryos of this species hatched into a free-swimming tadpole at stage 25. Kurixalus naso completed the entire process of development and metamorphosis over 62 days. This investigation may contribute to future studies on evaluation of adaptive characters, comparative embryology, and other developmental studies, associated with phylogenetic inferences.","PeriodicalId":56053,"journal":{"name":"Current Herpetology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2021-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47357959","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

The Green Bamboo Pit Viper, Trimeresurus stejnegeri, Discriminates Chemical Stimuli Among Anuran Species 绿竹坑蝰，Trimeresurus stejnegeri，在无尾猿物种中区分化学刺激

IF 0.7 4区生物学

Current Herpetology Pub Date : 2021-08-25 DOI: 10.5358/hsj.40.159

Chun-Kai Yang, A. Mori

引用次数: 2

A Preliminary Study of the Morphological and Ecological Characteristics of Plestiodon japonicus (Scincidae, Squamata) on the Danjo Islands, Western Japan 日本西部丹卓岛日本弹齿虎(剑齿虎科，鳞片目)形态与生态特征的初步研究

IF 0.7 4区生物学

Current Herpetology Pub Date : 2021-08-25 DOI: 10.5358/hsj.40.182

T. Okamoto, Takeo Kuriyama, Koshiro Eto, M. Hasegawa

引用次数: 0

Addition of the Sea Snake, Hydrophis stokesii (Reptilia: Squamata: Elapidae), to the Herpetofauna of Japan 海蛇(爬行纲:鳞目:鳗科)加入日本爬虫动物群

IF 0.7 4区生物学

Current Herpetology Pub Date : 2021-08-25 DOI: 10.5358/hsj.40.190

Takahide Sasai, Takumi Yamamoto, S. Oka, M. Toda

引用次数: 0