South American Journal of Herpetology最新文献_第9页

Higher Diversity in Open Cerrado Supports the Role of Regional Processes in Shaping an Anuran Assemblage in Southeastern Brazil 开放塞拉多地区较高的多样性支持了区域过程在巴西东南部形成Anuran组合中的作用

IF 0.9 4区生物学

South American Journal of Herpetology Pub Date : 2021-01-11 DOI: 10.2994/SAJH-D-18-00039.1

M. Tereza C Thomé, M. Martins, C. A. Brasileiro

{"title":"Higher Diversity in Open Cerrado Supports the Role of Regional Processes in Shaping an Anuran Assemblage in Southeastern Brazil","authors":"M. Tereza C Thomé, M. Martins, C. A. Brasileiro","doi":"10.2994/SAJH-D-18-00039.1","DOIUrl":"https://doi.org/10.2994/SAJH-D-18-00039.1","url":null,"abstract":"Abstract. In this study, we evaluate the role of local and regional factors in shaping the anuran assemblages in the Cerrado biome by contributing to the knowledge on the diversity patterns of different Cerrado vegetation types in southeastern Brazil. We measured richness and abundance of ground dwelling frogs in a gradient of vegetation structural complexity, varying from grassland (campo sujo) to forest (cerradão), using pitfall traps with drift fences and standardized efforts. We also measured vegetation structure by directly counting its components in the field. We found differences in richness and abundance among vegetation types, with richness being higher at more open vegetation types, and abundance being higher at the forest due to the extremely high number of captures of Rhinella ornata, a species from the Atlantic Forest biome. A concordant pattern in anuran diversity and vegetation structure suggests an important role of the habitat in structuring diversity in this group, with open vegetation types sharing both more similar anuran assemblages and vegetation. The higher diversity of Cerrado anurans observed in the open vegetation types in southeastern Brazil is in phase with diversity accounts for other groups of the herpetofauna throughout the biome, and it supports a prevalence of the regional processes over local determinism, a hypothesis that should be formally tested for amphibians with large-scale standardized sampling.","PeriodicalId":48691,"journal":{"name":"South American Journal of Herpetology","volume":"19 1","pages":"1 - 7"},"PeriodicalIF":0.9,"publicationDate":"2021-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43882691","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: 5

A Comparison of the Foraging Biology of Two Tropical Gecko Species in Disturbed Areas 干扰区两种热带壁虎觅食生物学比较

IF 0.9 4区生物学

South American Journal of Herpetology Pub Date : 2021-01-11 DOI: 10.2994/SAJH-D-18-00026.1

Charles O Cummings, T. Gamble, Michael T. Wells

引用次数: 1

Trophic Relationships among Five Species of Anura in the Colombian Caribbean Tropical Dry Forest: A Spatial and Temporal Approach 哥伦比亚加勒比热带干旱森林五种无尾动物的营养关系:时空分析

IF 0.9 4区生物学

South American Journal of Herpetology Pub Date : 2021-01-11 DOI: 10.2994/SAJH-D-17-00057.1

Argelina Blanco-Torres, M. Duré, M. A. Bonilla-Gómez

{"title":"Trophic Relationships among Five Species of Anura in the Colombian Caribbean Tropical Dry Forest: A Spatial and Temporal Approach","authors":"Argelina Blanco-Torres, M. Duré, M. A. Bonilla-Gómez","doi":"10.2994/SAJH-D-17-00057.1","DOIUrl":"https://doi.org/10.2994/SAJH-D-17-00057.1","url":null,"abstract":"Abstract. Species of Bufonidae and Leptodactylidae are common in the Colombian tropical dry forest. Although some of them are associated with active foraging and consumption of termites and ants, their trophic ecology is mostly unknown. The diet of five anuran species of Bufonidae (Rhinella horribilis, R. humboldti) and the leptodactylid subfamily Leiuperinae (Engystomops pustulosus, Pleurodema brachyops, and Pseudopaludicola pusilla) was examined at six sites of the Colombian Caribbean in fragments of dry forest and different land uses. A total of 310 food items were identified. The greatest contribution was represented by Coleoptera, Hymenoptera (Formicidae), Isoptera, and Diptera. The species differed in number and volume of prey. Except for Pseudopaludicola pusilla, which behaves as a generalist predator, species had high intake of termites and ants. Engystomops pustulosus preferred termites, Pleurodema brachyops had high consumption of ants and termites, and the two bufonid species were myrmecophagous. Except for Pseudopaludicola pusilla, predator and prey size was related. Most species have overlapping diets (spatially and temporally) when analyzing food items identified at the order level. However, the richness of different prey within these orders allows the coexistence of species. The diet of these species presents similar trends in different habitats throughout their distribution area.","PeriodicalId":48691,"journal":{"name":"South American Journal of Herpetology","volume":"19 1","pages":"22 - 31"},"PeriodicalIF":0.9,"publicationDate":"2021-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42659992","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

Extinction Risk Evaluation and Population Size Estimation of Bothrops insularis (Serpentes: Viperidae), a Critically Endangered Insular Pitviper Species of Brazil 巴西极度濒危的岛腹蛛Bothrops islandis的灭绝风险评估和种群规模估计

IF 0.9 4区生物学

South American Journal of Herpetology Pub Date : 2021-01-11 DOI: 10.2994/SAJH-D-17-00104.1

C. Abrahão, Ligia Grazzielli Amorim, Adriana Melo Magalhães, C. Azevedo, José Henrique Hildebrand Grisi-Filho, R. Dias

{"title":"Extinction Risk Evaluation and Population Size Estimation of Bothrops insularis (Serpentes: Viperidae), a Critically Endangered Insular Pitviper Species of Brazil","authors":"C. Abrahão, Ligia Grazzielli Amorim, Adriana Melo Magalhães, C. Azevedo, José Henrique Hildebrand Grisi-Filho, R. Dias","doi":"10.2994/SAJH-D-17-00104.1","DOIUrl":"https://doi.org/10.2994/SAJH-D-17-00104.1","url":null,"abstract":"Abstract. The golden lancehead pitviper (Bothrops insularis) is a critically endangered species endemic to the Queimada Grande Island, a federally protected area located 33 km off the southern coast of São Paulo State, Brazil. Adults have specialized diet, preying upon migrating birds, and the species' reproductive efficiency is quite lower than its continental related species, B. jararaca. Potential threats to B. insularis include illegal removal, introduction of exotic species or diseases, and catastrophic events such as wildfire. The population size of B. insularis was estimated at 2,899 individuals (CI 95% = 1,903; 4,416) in its forested habitat using distance sampling. This is the first population estimation using 3D area model for a reptile habitat. Bothrops insularis was more sensitive to harvesting of few individuals yearly than a catastrophic event that causes mortality over 95% of the entire population in a 100-year simulation period. Prioritizing conservation efforts of reptile species in Brazil depends on simple yet robust monitoring methods like the one presented here. This study was only made possible through the concatenation of government, management, and scientific interests. Such synergism should be encouraged in conservation policies in Brazil, especially in remote locations.","PeriodicalId":48691,"journal":{"name":"South American Journal of Herpetology","volume":"19 1","pages":"32 - 39"},"PeriodicalIF":0.9,"publicationDate":"2021-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47884450","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

Evaluation of the Seasonal Variation of Parameters of Oxidative Status of Tropidurus catalanensis Gudynas and Skuk, 1983 对卡塔兰Tropidurus catalanensis氧化状态参数季节性变化的评价

IF 0.9 4区生物学

South American Journal of Herpetology Pub Date : 2021-01-11 DOI: 10.2994/SAJH-D-18-00048.1

M. Oliveira, Fernando Machado Braghirolli, Luis Esteban Krause Lanés, L. Verrastro, G. Oliveira

{"title":"Evaluation of the Seasonal Variation of Parameters of Oxidative Status of Tropidurus catalanensis Gudynas and Skuk, 1983","authors":"M. Oliveira, Fernando Machado Braghirolli, Luis Esteban Krause Lanés, L. Verrastro, G. Oliveira","doi":"10.2994/SAJH-D-18-00048.1","DOIUrl":"https://doi.org/10.2994/SAJH-D-18-00048.1","url":null,"abstract":"Abstract. Markers of oxidative status may become important tools in conservation biology as a means of evaluating survival and reproductive expectations in organisms, as well as to elucidate the effects of anthropogenic impacts on populations living in their natural environments. The objective of the present study was to evaluate seasonal variations in oxidative status in a population of Tropidurus catalanensis through the analysis of lipid peroxidation levels and quantification of activity of the antioxidant enzymes superoxide dismutase, catalase, and glutathione S-transferase in liver, kidneys, and tail muscle. This lizard inhabits southern Brazil, in the Pampas grasslands. A total of 73 animals were collected over a 1-year period through active search and hand capture, separated into males and females, euthanized with ketamine hydrochloride, and frozen. A detailed approach on the variation of climatic variables over the seasons is also provided in order to subsidize a better comprehension of seasonal variation in oxidative stress biomarkers of T. catalanensis. Results obtained reveal that this lizard exhibits a clear pattern of seasonal variation in redox balance markers across different tissues. Antioxidant system of these animals is highly efficient, being able to maintain constant levels of lipid peroxidation in liver and muscle in males and in all tissues studied in females. In the renal tissue, an increase in lipid peroxidation was found only in males in spring. The enzymatic antioxidant defense system studied herein exhibited tissue and sex-specific responsiveness, and was possibly modulated by factors both abiotic (e.g., photoperiod, temperature, radiation, precipitation) and biotic (e.g., reproductive cycle, nutritional status, type of food consumed).","PeriodicalId":48691,"journal":{"name":"South American Journal of Herpetology","volume":"19 1","pages":"12 - 21"},"PeriodicalIF":0.9,"publicationDate":"2021-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46883060","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

Resolving the Obscure Identity of Steironotus arenarius Tschudi, 1845 and Tropidurus tschudii Roux, 1907 (Squamata: Tropiduridae) 解决阿氏扁尾蠊（Steironotus arenarius Tschudi）的模糊身份，1845年和Tropidurus Tschudi Roux，1907年（角鲨目：Tropiduridae）

IF 0.9 4区生物学

South American Journal of Herpetology Pub Date : 2021-01-11 DOI: 10.2994/SAJH-D-19-00094.1

A. Carvalho

{"title":"Resolving the Obscure Identity of Steironotus arenarius Tschudi, 1845 and Tropidurus tschudii Roux, 1907 (Squamata: Tropiduridae)","authors":"A. Carvalho","doi":"10.2994/SAJH-D-19-00094.1","DOIUrl":"https://doi.org/10.2994/SAJH-D-19-00094.1","url":null,"abstract":"Abstract. The taxonomic history of Steironotus arenarius Tschudi, 1845 is one of the most problematic among all tropidurids. The species was originally described supposedly based on four specimens collected in Peru and deposited by J.J. von Tschudi at the Musée d'Histoire Naturelle de Neuchâtel, Switzerland. However, the syntypes were not re-examined until Roux (1907: Rev. Suisse Zool. 15:293–303) performed a revision of Tschudi's Peruvian collection. Fritts (1974: Mem. San Diego Soc. Nat. Hist. 7:1–89) revised the taxonomy of Stenocercus and endorsed Roux's allocation of Steironotus arenarius in Tropidurus Wied, 1825, although he never analyzed Tschudi's types. Ortiz (1989: Bull. Soc. Neuchâtel. Sci. Nat. 112:47–64) was the first contemporary systematist to re-analyze Tschudi's specimens for his catalogue of the lizard types of the Musée d'Histoire Naturelle de Neuchâtel. His compilation attempted to clarify the number, location, and identity of the types of Steironotus arenarius found at the Musée d'Histoire Naturelle de Neuchâtel and Naturhistorisches Museum Basel. Subsequent authors overlooked or opted for not following Ortiz and endorsed the allocation of Steironotus arenarius in Tropidurus. Although Ortiz was the only one to re-analyze the types of Steironotus arenarius after Roux, he never provided full morphological descriptions or detailed comparative notes to support his taxonomic conclusions. Herein, I clarify the taxonomic history of Steironotus arenarius Tschudi, 1845 and Tropidurus tschudii Roux, 1907, and confirm that Tschudi's syntypic series is a composite of two genera, i.e., Microlophus Duméril and Bibron, 1837 and Stenocercus Duméril and Bibron, 1837. I ultimately designate a new lectotype for Steironotus arenarius Tschudi, 1845 and provide recommendations for correcting uncorroborated taxonomic arrangements, bringing stability to tropidurid taxonomy.","PeriodicalId":48691,"journal":{"name":"South American Journal of Herpetology","volume":"19 1","pages":"40 - 53"},"PeriodicalIF":0.9,"publicationDate":"2021-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42978830","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

Review of the Recent Knowledge on the Crocodilian Immune System 鳄鱼免疫系统研究进展综述

IF 0.9 4区生物学

South American Journal of Herpetology Pub Date : 2020-12-31 DOI: 10.2994/SAJH-D-19-00093.1

P. Siroski, Moleón Barsani María Soledad

{"title":"Review of the Recent Knowledge on the Crocodilian Immune System","authors":"P. Siroski, Moleón Barsani María Soledad","doi":"10.2994/SAJH-D-19-00093.1","DOIUrl":"https://doi.org/10.2994/SAJH-D-19-00093.1","url":null,"abstract":"Abstract. Despite the key position of reptiles in evolutionary history, reptilian immune responses have received relatively little attention. Like all jawed vertebrates, reptiles possess both an innate and adaptive immune system to recognize unknown foreign substances. Although diverse immunological mechanisms have been discovered, they seem not to be adequate to avoid the invasion of some microorganisms and stop some infections. All species of crocodilians show well-defined social behaviors, and hierarchical dominance attitudes can be observed in both males and females. This behavior generates conflicts that are expressed through aggression and combat with serious health consequences. These animals have evolved a very active immune mechanisms and components that provides a fast and effective line of defense. Science has focused on those mechanisms and components because crocodilians are an especially interesting group on which to perform evolutionary studies because they are one of the surviving archosaurs, which represents an important link within “higher” vertebrates. Based on those background, they are being observed and evaluated for their potential application in domestic and wild species. These findings will not only generate an increasing value as a therapeutic resource but also to the ecosystem, and to decode biological processes that could lead to phylogenetic (ancestral) cognition. In this review, many components of the crocodilian immune system are described that could lead to a more thorough understanding of how these animals select the most appropriate response to environmental challenges and antigen exposure and identify networks to study and interesting opportunities to the experts in the field.","PeriodicalId":48691,"journal":{"name":"South American Journal of Herpetology","volume":"18 1","pages":"68 - 77"},"PeriodicalIF":0.9,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48897089","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

Potential Distribution of Plestiodon copei (Squamata: Scincidae), an Endemic and Threatened Lizard of Mexico 一种墨西哥特有的濒危蜥蜴——桡Plestiodon copei（Squamata：Scincidae）的潜在分布

IF 0.9 4区生物学

South American Journal of Herpetology Pub Date : 2020-12-31 DOI: 10.2994/10.2994/SAJH-D-18-00044.1

J. C. Alvarado-Avilés, C. Venegas-Barrera, Javier Alvarado‐Díaz, Oswaldo Hernández‐Gallegos, Maria de Lourdes Ruiz-Gomez, H. Sánchez-Sánchez

{"title":"Potential Distribution of Plestiodon copei (Squamata: Scincidae), an Endemic and Threatened Lizard of Mexico","authors":"J. C. Alvarado-Avilés, C. Venegas-Barrera, Javier Alvarado‐Díaz, Oswaldo Hernández‐Gallegos, Maria de Lourdes Ruiz-Gomez, H. Sánchez-Sánchez","doi":"10.2994/10.2994/SAJH-D-18-00044.1","DOIUrl":"https://doi.org/10.2994/10.2994/SAJH-D-18-00044.1","url":null,"abstract":"Abstract. Species distribution models are increasingly important in herpetological studies of spatial ecology and conservation. In this paper, we estimate the potential distribution of an endemic and threatened Mexican lizard, Plestiodon copei. The presence of this skink was estimated using the maximum entropy algorithm, and the most relevant environmental variables for the model were identified. Additionally, the specialization of the species was evaluated, the coverage of natural protected areas throughout its distribution was estimated, and the priority areas for the conservation of this lizard were delimited. The model shows that the optimum areas of distribution extend from the southeastern state of Jalisco within the Faja Volcánica Transmexicana (FVT) to the limits of the states of Puebla and Veracruz, covering an area of approximately 12,300 km2. The distribution of P. copei was associated with high mountains and temperate forests, ecosystems strongly affected by human activities. The model predicted previously unrecorded populations, some of which were corroborated in the field. It was also found that 53.08% of the species' distribution is within natural protected areas along the FVT. These observations emphasize the urgent need to propose conservation strategies for this endemic lizard and its habitat.","PeriodicalId":48691,"journal":{"name":"South American Journal of Herpetology","volume":"18 1","pages":"56 - 67"},"PeriodicalIF":0.9,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46152523","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 Feeding Ecology of the Black-bellied Bunchgrass Lizard Sceloporus aeneus (Squamata: Phrynosomatidae) in Central Mexico 墨西哥中部黑腹Bunchgrass蜥蜴Sceloporus aeneus（Squamata:Phynosomatidae）的两性异形和食性生态学

IF 0.9 4区生物学

South American Journal of Herpetology Pub Date : 2020-12-31 DOI: 10.2994/SAJH-D-18-00056.1

Raciel Cruz‐Elizalde, A. Ramírez‐Bautista, F. F. Núñez de Cáceres-González

{"title":"Sexual Dimorphism and Feeding Ecology of the Black-bellied Bunchgrass Lizard Sceloporus aeneus (Squamata: Phrynosomatidae) in Central Mexico","authors":"Raciel Cruz‐Elizalde, A. Ramírez‐Bautista, F. F. Núñez de Cáceres-González","doi":"10.2994/SAJH-D-18-00056.1","DOIUrl":"https://doi.org/10.2994/SAJH-D-18-00056.1","url":null,"abstract":"Abstract. Morphology and resource use have a significant influence on lizard population dynamics. In this study, sexual dimorphism and feeding ecology were assessed in a population of Sceloporus aeneus from central Mexico. Sexual dimorphism was recorded, with males being larger than females in several morphological characteristics, such as jaw width, femur length, tibia length, and forearm length, but not snout–vent length (SVL) or jaw length, which were similar in both sexes. The stomach contents analysis indicated an insectivorous diet composed of 11 prey categories, of which females consumed 11 and males consumed 9. Low values of feeding niche breadth were found, as well as high overlap between sexes and seasons. For the whole population, adult preys of the family Formicidae and orders Coleoptera and Hemiptera showed the highest values of food importance and abundance. A higher volume of stomach contents was recorded during the dry season than the wet season in both females and males. Results showed a pattern of sexual dimorphism similar to that of other species of the genus Sceloporus, but different from those of other populations of the same species. Morphological variation in jaw length and width seems to be related to food resources use because, in spite of the high similarity in the diet between sexes, the volume of stomach contents was not correlated with SVL in females. These findings suggest a constant consumption of food that is subsequently invested in reproduction. Further studies analyzing morphology and diet and their effect on reproductive characteristics such as clutch size, eggs mass, and volume are needed among populations of this species. The results obtained in this research could help explain the differences and similarities previously reported on the morphology and reproductive characteristics for S. aeneus and other species of the S. scalaris group.","PeriodicalId":48691,"journal":{"name":"South American Journal of Herpetology","volume":"18 1","pages":"46 - 55"},"PeriodicalIF":0.9,"publicationDate":"2020-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49138997","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

Rediscovery of Liolaemus duellmani Cei, 1978 (Iguania: Liolaemidae): Description of a Female Found Near the Type Locality duellmani Cei Liolaemus的再发现，1978（鬣蜥：Liolaemidae）：在模式位置附近发现的一只雌性的描述

IF 0.9 4区生物学

South American Journal of Herpetology Pub Date : 2020-12-17 DOI: 10.2994/sajh-d-18-00042.1

S. Nenda, A. Laspiur, F. Lobo, C. Abdala

引用次数: 0