Pub Date : 2019-06-30DOI: 10.13128/ACTA_HERPETOL-23871
T. R. Carvalho, C. Haddad, M. Gridi-Papp
The frog genus Physalaemus has almost 50 species with vocalizations that are mostly composed of a single note. This note tends to have a broad harmonic structure or a pulsed structure. The sister species P. lateristriga and P. olfersii have pulsed advertisement calls that have been described as a noisy and long-lasting warbling sound. We provide the first account of inclusion of tonal sounds as part of the vocal repertoire of these species. Pure tones can (1) be long and form the entire call; (2) form prefixes of variable length separated by silence from the advertisement call; (3) be brief and form the onset or the offset of the regular advertisement call. Tonal calls may be an evolutionary novelty and they are not known from other populations of P. olfersii and P. lateristriga . Identification of the mechanism of sound production and of the behavioural role of these unique calls may help elucidate the evolution of call complexity in frogs.
{"title":"Tonal calls as a bioacoustic novelty in two Atlantic Forest species of Physalaemus (Anura: Leptodactylidae)","authors":"T. R. Carvalho, C. Haddad, M. Gridi-Papp","doi":"10.13128/ACTA_HERPETOL-23871","DOIUrl":"https://doi.org/10.13128/ACTA_HERPETOL-23871","url":null,"abstract":"The frog genus Physalaemus has almost 50 species with vocalizations that are mostly composed of a single note. This note tends to have a broad harmonic structure or a pulsed structure. The sister species P. lateristriga and P. olfersii have pulsed advertisement calls that have been described as a noisy and long-lasting warbling sound. We provide the first account of inclusion of tonal sounds as part of the vocal repertoire of these species. Pure tones can (1) be long and form the entire call; (2) form prefixes of variable length separated by silence from the advertisement call; (3) be brief and form the onset or the offset of the regular advertisement call. Tonal calls may be an evolutionary novelty and they are not known from other populations of P. olfersii and P. lateristriga . Identification of the mechanism of sound production and of the behavioural role of these unique calls may help elucidate the evolution of call complexity in frogs.","PeriodicalId":50896,"journal":{"name":"Acta Herpetologica","volume":"14 1","pages":"21-26"},"PeriodicalIF":0.8,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.13128/ACTA_HERPETOL-23871","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43192325","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}
Pub Date : 2019-06-30DOI: 10.13128/ACTA_HERPETOL-24651
S. Scali, R. Sacchi, M. Falaschi, A. Coladonato, Sara Pozzi, M. Zuffi, M. Mangiacotti
Disentangling the effects of single releasers in animal communication is a demanding task because a releaser often consists of a combination of different key stimuli. Territorial communication in reptiles usually depends on visual, chemical, and acoustic stimuli, but the role of each of them depends on phylogeny. Lacertids are modern lizards that rely mainly on chemical cues for their communication, but they also use aggressive displays based on visual recognition. We experimentally tested the visual stimuli that release an aggressive response in the males of a typical lacertid, the common wall lizard ( Podarcis muralis ), testing the effects of silicone models and mirrored images in captivity. The response to models and control (a blank sheet) was not significantly different and these stimuli did not release any aggressive behaviour. On the contrary, the reflected image in a mirror caused overt aggression (i.e., bites against it) in 63% of tested individuals. The results clearly demonstrate the role of visual stimuli in territorial communication, but only as a combined effect of shape and motion, differently from other lizard families for which shape is enough to stimulate aggressive responses. Mirrors can be useful tools to investigate aggression related to physiological and morphological aspects in lacertid lizards.
{"title":"Mirrored images but not silicone models trigger aggressive responses in male Common wall lizards","authors":"S. Scali, R. Sacchi, M. Falaschi, A. Coladonato, Sara Pozzi, M. Zuffi, M. Mangiacotti","doi":"10.13128/ACTA_HERPETOL-24651","DOIUrl":"https://doi.org/10.13128/ACTA_HERPETOL-24651","url":null,"abstract":"Disentangling the effects of single releasers in animal communication is a demanding task because a releaser often consists of a combination of different key stimuli. Territorial communication in reptiles usually depends on visual, chemical, and acoustic stimuli, but the role of each of them depends on phylogeny. Lacertids are modern lizards that rely mainly on chemical cues for their communication, but they also use aggressive displays based on visual recognition. We experimentally tested the visual stimuli that release an aggressive response in the males of a typical lacertid, the common wall lizard ( Podarcis muralis ), testing the effects of silicone models and mirrored images in captivity. The response to models and control (a blank sheet) was not significantly different and these stimuli did not release any aggressive behaviour. On the contrary, the reflected image in a mirror caused overt aggression (i.e., bites against it) in 63% of tested individuals. The results clearly demonstrate the role of visual stimuli in territorial communication, but only as a combined effect of shape and motion, differently from other lizard families for which shape is enough to stimulate aggressive responses. Mirrors can be useful tools to investigate aggression related to physiological and morphological aspects in lacertid lizards.","PeriodicalId":50896,"journal":{"name":"Acta Herpetologica","volume":"14 1","pages":"35-41"},"PeriodicalIF":0.8,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.13128/ACTA_HERPETOL-24651","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46084301","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}
Pub Date : 2019-06-30DOI: 10.13128/ACTA_HERPETOL-24102
Amaël Borzée, Hae-Jun Baek, C. Lee, Dong Yoon Kim, Jae-Young Song, Jae‐Hwa Suh, Y. Jang, M. Min
Despite the importance of clearly assessing the distribution boundaries of species, it is not possible for scientists to acquire genetic information and conduct molecular analysis for all populations. Consequently, citizen science is of increasing importance for large scale data collection. In this study, we described the range boundaries of the four Hynobius species occurring in Korea based on genetic identification and refined their distribution through citizen science data. The genetic identification of individuals was extracted from the literature, while the citizen science data were extracted from iNaturalist through GBIF. Distribution boundary lines were drawn from the genetic data and consistency with citizen science datapoints was assessed through a comparative analysis with the points found beyond the established boundary lines. Depending on the species, 1.43 to 25.00% of the observations extracted from the citizen science data were located beyond the boundaries suggested by the molecular analyses, with average distances ranging from 3.51 ± 2.97 to 51.47 ± 30.87 km (mean ± SD). We considered these variations negligible in the view of the whole distribution of these species. In general, the distributions extracted from iNaturalist were accurate and adequately representative of the distribution of the species, with the exception of the recently split H. quelpaertensis . Additionally, citizen science data highlighted the absence of gaps in the distribution of these species. In conclusion, given the good accuracy of citizen science data, we recommend the publication of molecular based data so that citizen science platforms could help define accurately the range of species for which data is missing or outdated.
{"title":"Scientific publication of georeferenced molecular data as an adequate guide to delimit the range of Korean Hynobius salamanders through citizen science","authors":"Amaël Borzée, Hae-Jun Baek, C. Lee, Dong Yoon Kim, Jae-Young Song, Jae‐Hwa Suh, Y. Jang, M. Min","doi":"10.13128/ACTA_HERPETOL-24102","DOIUrl":"https://doi.org/10.13128/ACTA_HERPETOL-24102","url":null,"abstract":"Despite the importance of clearly assessing the distribution boundaries of species, it is not possible for scientists to acquire genetic information and conduct molecular analysis for all populations. Consequently, citizen science is of increasing importance for large scale data collection. In this study, we described the range boundaries of the four Hynobius species occurring in Korea based on genetic identification and refined their distribution through citizen science data. The genetic identification of individuals was extracted from the literature, while the citizen science data were extracted from iNaturalist through GBIF. Distribution boundary lines were drawn from the genetic data and consistency with citizen science datapoints was assessed through a comparative analysis with the points found beyond the established boundary lines. Depending on the species, 1.43 to 25.00% of the observations extracted from the citizen science data were located beyond the boundaries suggested by the molecular analyses, with average distances ranging from 3.51 ± 2.97 to 51.47 ± 30.87 km (mean ± SD). We considered these variations negligible in the view of the whole distribution of these species. In general, the distributions extracted from iNaturalist were accurate and adequately representative of the distribution of the species, with the exception of the recently split H. quelpaertensis . Additionally, citizen science data highlighted the absence of gaps in the distribution of these species. In conclusion, given the good accuracy of citizen science data, we recommend the publication of molecular based data so that citizen science platforms could help define accurately the range of species for which data is missing or outdated.","PeriodicalId":50896,"journal":{"name":"Acta Herpetologica","volume":"14 1","pages":"27-33"},"PeriodicalIF":0.8,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.13128/ACTA_HERPETOL-24102","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49572323","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}
Pub Date : 2019-06-30DOI: 10.13128/ACTA_HERPETOL-25008
John V Lyakurwa, K. Howell, L. Munishi, A. Treydte
While knowledge of African vertebrate biodiversity has increased dramatically in recent years, the field of herpetology which encompasses many threatened and endemic species, has lagged behind, and many areas have not been adequately explored. Intensive field work was conducted during the rainy season from December 2017 to April 2018 to assess reptile occurrence mostly in previously unexplored areas of the Uzungwa Scarp Nature Forest Reserve (USNFR) which is part of the Udzungwa Mountain ranges in the Eastern Arc Mountains (EAM), and adjacent agricultural areas. Bucket pitfall traps, funnel traps, night transects and opportunistic search methods were used to sample reptiles across four zones: in lowland, submontane and montane forests of the USNFR, and in neighboring farmlands. Forty-five reptile species across 14 families were recorded, mostly concentrated on the lowland and submontane forests. The number of endemic and threatened species in the USNFR reaches 20 and 14 respectively, and most are found in the submontane forest. Nineteen species were new records for the USNFR, five of them representing range extensions. Reptile species richness, abundance and diversity differed significantly across the four zones, except between montane and farmland zones and between lowland and submontane. However, farmland zone was discordant from other zones in terms of species composition. This study adds to the importance of the EAM not only in harbouring large numbers of species but also as an important hotspot for endemic and threatened reptiles. It also calls for proper land-use practices in farms adjacent to protected areas for sustainable conservation of biodiversity.
{"title":"Uzungwa Scarp Nature Forest Reserve: a unique hotspot for reptiles in Tanzania","authors":"John V Lyakurwa, K. Howell, L. Munishi, A. Treydte","doi":"10.13128/ACTA_HERPETOL-25008","DOIUrl":"https://doi.org/10.13128/ACTA_HERPETOL-25008","url":null,"abstract":"While knowledge of African vertebrate biodiversity has increased dramatically in recent years, the field of herpetology which encompasses many threatened and endemic species, has lagged behind, and many areas have not been adequately explored. Intensive field work was conducted during the rainy season from December 2017 to April 2018 to assess reptile occurrence mostly in previously unexplored areas of the Uzungwa Scarp Nature Forest Reserve (USNFR) which is part of the Udzungwa Mountain ranges in the Eastern Arc Mountains (EAM), and adjacent agricultural areas. Bucket pitfall traps, funnel traps, night transects and opportunistic search methods were used to sample reptiles across four zones: in lowland, submontane and montane forests of the USNFR, and in neighboring farmlands. Forty-five reptile species across 14 families were recorded, mostly concentrated on the lowland and submontane forests. The number of endemic and threatened species in the USNFR reaches 20 and 14 respectively, and most are found in the submontane forest. Nineteen species were new records for the USNFR, five of them representing range extensions. Reptile species richness, abundance and diversity differed significantly across the four zones, except between montane and farmland zones and between lowland and submontane. However, farmland zone was discordant from other zones in terms of species composition. This study adds to the importance of the EAM not only in harbouring large numbers of species but also as an important hotspot for endemic and threatened reptiles. It also calls for proper land-use practices in farms adjacent to protected areas for sustainable conservation of biodiversity.","PeriodicalId":50896,"journal":{"name":"Acta Herpetologica","volume":"14 1","pages":"3-14"},"PeriodicalIF":0.8,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.13128/ACTA_HERPETOL-25008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45403238","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}
Pub Date : 2019-06-30DOI: 10.13128/ACTA_HERPETOL-23941
Fatıma N. Oğul, F. Huber, Sinem Cihan, Kumsal Düzgün, A. Kideys, Korhan Özkan
We tested for the first time the efficiency of the use of infra-red (IR) cameras for sea turtle hatchling monitoring. The cameras were installed on one green turtle ( Chelonia mydas ) and four loggerhead turtle ( Caretta caretta ) nests during 2014 and 2015 nesting season in the south-east Mediterranean, Turkey. The camera monitoring, even with the limited sample size, have successfully corroborated the previous observations and provided further insights on hatchling emergence behavior. The analysis of the camera recordings revealed that hatchlings emerged from the nests asynchronously in varying numbers of groups and different group sizes, while c. 60% hatchlings emerged during the first 5 days of emergence activity. 98.6% of hatchlings emerged at night with a peak activity between 21:00 and 00:00. The day of first emergence varied between 38 and 64 days since egg deposition, while the day of last emergence varied only between 60 and 65 days. Total emergence activity continued up to maximum of 22 days, which is longer than that of previous records. Overall, the present study showed that IR camera monitoring is a promising tool for sea turtle monitoring and can provide detailed insights on sea turtle hatchling behavior.
{"title":"Using an in-situ infra-red camera system for sea turtle hatchling emergence monitoring","authors":"Fatıma N. Oğul, F. Huber, Sinem Cihan, Kumsal Düzgün, A. Kideys, Korhan Özkan","doi":"10.13128/ACTA_HERPETOL-23941","DOIUrl":"https://doi.org/10.13128/ACTA_HERPETOL-23941","url":null,"abstract":"We tested for the first time the efficiency of the use of infra-red (IR) cameras for sea turtle hatchling monitoring. The cameras were installed on one green turtle ( Chelonia mydas ) and four loggerhead turtle ( Caretta caretta ) nests during 2014 and 2015 nesting season in the south-east Mediterranean, Turkey. The camera monitoring, even with the limited sample size, have successfully corroborated the previous observations and provided further insights on hatchling emergence behavior. The analysis of the camera recordings revealed that hatchlings emerged from the nests asynchronously in varying numbers of groups and different group sizes, while c. 60% hatchlings emerged during the first 5 days of emergence activity. 98.6% of hatchlings emerged at night with a peak activity between 21:00 and 00:00. The day of first emergence varied between 38 and 64 days since egg deposition, while the day of last emergence varied only between 60 and 65 days. Total emergence activity continued up to maximum of 22 days, which is longer than that of previous records. Overall, the present study showed that IR camera monitoring is a promising tool for sea turtle monitoring and can provide detailed insights on sea turtle hatchling behavior.","PeriodicalId":50896,"journal":{"name":"Acta Herpetologica","volume":"14 1","pages":"43-49"},"PeriodicalIF":0.8,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.13128/ACTA_HERPETOL-23941","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44251148","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}
Pub Date : 2019-06-30DOI: 10.13128/ACTA_HERPETOL-24806
Mohamed Amine Samlali, Abderrahim S'khifa, T. Slimani
The age structure and growth of the Moroccan Painted Frog ( Discoglossus scovazzi Camerano, 1878) in a population living in the High Atlas at the upper altitudinal limit of the species’ range was estimated for the first time by skeletochronology. Individual age was determined by counting the lines of arrested growth (LAGs) from cross-sections of the phalanges. Both males and females reached sexual maturity at 3-4 years of age at which point the speed of osteogenesis and body growth slow down . Males and females have maximum lifespans of six and five years, and average sizes of 47. 50 mm (n = 21, SD = 1.40) and 39.70 mm (n = 53, SD = 0.90) respectively. We detected a positive relationship between age and size, suggesting that the oldest individuals are always bigger and heavier. Sizes corresponding to the same age class are very heterogeneous reflecting divergent conditions and growth strategies.
首次利用骨骼年代学方法对生活在高阿特拉斯地区的摩洛哥彩绘蛙(Discoglossus scovazzi Camerano, 1878)种群的年龄结构和生长进行了估计。个体年龄是通过计算指骨横截面上的生长阻滞线(lag)来确定的。雄性和雌性在3-4岁时达到性成熟，此时成骨和身体生长的速度减慢。雄性和雌性的最长寿命分别为6年和5年，平均体型为47岁。分别为50 mm (n = 21, SD = 1.40)和39.70 mm (n = 53, SD = 0.90)。我们发现年龄和体型之间存在正相关关系，这表明年龄最大的个体总是更大更重。同一年龄层对应的大小是非常异质的，反映了不同的条件和生长策略。
{"title":"Age structure of a population of Discoglossus scovazzi Camerano, 1878 (Anura - Discoglossidae) in extreme environmental conditions (High Atlas, Morocco)","authors":"Mohamed Amine Samlali, Abderrahim S'khifa, T. Slimani","doi":"10.13128/ACTA_HERPETOL-24806","DOIUrl":"https://doi.org/10.13128/ACTA_HERPETOL-24806","url":null,"abstract":"The age structure and growth of the Moroccan Painted Frog ( Discoglossus scovazzi Camerano, 1878) in a population living in the High Atlas at the upper altitudinal limit of the species’ range was estimated for the first time by skeletochronology. Individual age was determined by counting the lines of arrested growth (LAGs) from cross-sections of the phalanges. Both males and females reached sexual maturity at 3-4 years of age at which point the speed of osteogenesis and body growth slow down . Males and females have maximum lifespans of six and five years, and average sizes of 47. 50 mm (n = 21, SD = 1.40) and 39.70 mm (n = 53, SD = 0.90) respectively. We detected a positive relationship between age and size, suggesting that the oldest individuals are always bigger and heavier. Sizes corresponding to the same age class are very heterogeneous reflecting divergent conditions and growth strategies.","PeriodicalId":50896,"journal":{"name":"Acta Herpetologica","volume":"14 1","pages":"65-68"},"PeriodicalIF":0.8,"publicationDate":"2019-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.13128/ACTA_HERPETOL-24806","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48954361","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}
Pub Date : 2019-05-02DOI: 10.13128/ACTA_HERPETOL-24274
F. Avila, J. M. Oliveira, Mateus Oliveira, Márcio Borges‐Martins, V. Valiati, A. M. Tozetti
The snake Phalotris lemniscatus is a polymorphic species regarding color, which varies between light shades with a yellow predominance (pale yellow-brown) to darker shades with a red predominance (red-dark). Pale yellow-brown individuals are more frequent in coastal populations while there is a tendency of increasing the frequency of red-dark morphs in inland areas. Considering the variation in substrate color along the species distribution (light/sandy on the coast to reddish and dark/argillaceous in inland areas), we raise the hypothesis that the predation rate of each morph would be lower in sites were its crypsis potential is higher. If correct, this hypothesis would reinforce the idea that the predation risk is one of the factors influencing the spatial structuring in morph frequency distributions in populations of P. lemniscatus . To test this hypothesis, we performed a field experiment using plasticine P. lemniscatus artificial models that represent two morphs: red-dark and pale yellow-brown. The models were distributed in three localities where the following substrate types predominate: light (Coastal Site), intermediary (Lowland Site) and reddish dark (Highland Site). Our predictions were corroborated only at the coastal site, where the less cryptic morph was the most preyed one. We verified that there is a regional variation in the predation risk on different morphs. Thus, the possibility that the selective pressure by predators is a relevant element in the structuring of the frequencies of different morph populations of this species cannot be completely excluded.
{"title":"Does color polymorphism affect the predation risk on Phalotris lemniscatus (Duméril, Bibron and Duméril, 1854) (Serpentes, Dipsadidae)?","authors":"F. Avila, J. M. Oliveira, Mateus Oliveira, Márcio Borges‐Martins, V. Valiati, A. M. Tozetti","doi":"10.13128/ACTA_HERPETOL-24274","DOIUrl":"https://doi.org/10.13128/ACTA_HERPETOL-24274","url":null,"abstract":"The snake Phalotris lemniscatus is a polymorphic species regarding color, which varies between light shades with a yellow predominance (pale yellow-brown) to darker shades with a red predominance (red-dark). Pale yellow-brown individuals are more frequent in coastal populations while there is a tendency of increasing the frequency of red-dark morphs in inland areas. Considering the variation in substrate color along the species distribution (light/sandy on the coast to reddish and dark/argillaceous in inland areas), we raise the hypothesis that the predation rate of each morph would be lower in sites were its crypsis potential is higher. If correct, this hypothesis would reinforce the idea that the predation risk is one of the factors influencing the spatial structuring in morph frequency distributions in populations of P. lemniscatus . To test this hypothesis, we performed a field experiment using plasticine P. lemniscatus artificial models that represent two morphs: red-dark and pale yellow-brown. The models were distributed in three localities where the following substrate types predominate: light (Coastal Site), intermediary (Lowland Site) and reddish dark (Highland Site). Our predictions were corroborated only at the coastal site, where the less cryptic morph was the most preyed one. We verified that there is a regional variation in the predation risk on different morphs. Thus, the possibility that the selective pressure by predators is a relevant element in the structuring of the frequencies of different morph populations of this species cannot be completely excluded.","PeriodicalId":50896,"journal":{"name":"Acta Herpetologica","volume":"14 1","pages":"57-63"},"PeriodicalIF":0.8,"publicationDate":"2019-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.13128/ACTA_HERPETOL-24274","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44331760","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}
Pub Date : 2018-12-31DOI: 10.13128/ACTA_HERPETOL-22830
N. Sillero, Elena Argaña, Susana Freitas, E. García-Muñoz, M. Arakelyan, C. Corti, M. Carretero
Factors driving the spatial patterns of communities of sedentary organisms are still poorly understood. In this context parthenogenetic animals are useful to test the contribution of sexual and interspecific interactions on spatial patterns. As such, mixed communities of asexual and sexual species are expected to be spatially organized as a single sexual species, with sexes randomly distributed and mutually independent. During the reproductive period, we determined the instantaneous spatial structure in a community of Darevskia rock lizards from Armenia composed of one sexual species ( D. valentini ), two asexual species ( D. armeniaca , D. unisexualis ), and their hybrids. We also analysed the specific composition of clusters and the species segregation by habitat. We used the Ripley’s K distance function to measure clustering spatial patterns, and the Delaunay’s triangulation to identify the clusters and their specific composition. We estimated the spatial segregation among species by calculating the overlap between species pairs, by comparing pairwise distances from males to other males and from males to females, and by comparing the frequencies of both sexes and reproduction modes (asexual and sexual) in plant cover and height using log-linear models. Species displayed a clustered spatial structure, with parthenogens (mainly D. armeniaca ) or their hybrids in all clusters. Females and males were concentrated in areas with medium plant cover. D. armeniaca and D. valentini were the species with the highest overlap. Males were closer to males than to females. This community displays an instantaneous spatial pattern resembling a population of a single sexual species. Spatial statistics offer new insights to analyse the spatial structure of species communities.
{"title":"Short term spatial structure of a lizard (Darevskia sp.) community in Armenia","authors":"N. Sillero, Elena Argaña, Susana Freitas, E. García-Muñoz, M. Arakelyan, C. Corti, M. Carretero","doi":"10.13128/ACTA_HERPETOL-22830","DOIUrl":"https://doi.org/10.13128/ACTA_HERPETOL-22830","url":null,"abstract":"Factors driving the spatial patterns of communities of sedentary organisms are still poorly understood. In this context parthenogenetic animals are useful to test the contribution of sexual and interspecific interactions on spatial patterns. As such, mixed communities of asexual and sexual species are expected to be spatially organized as a single sexual species, with sexes randomly distributed and mutually independent. During the reproductive period, we determined the instantaneous spatial structure in a community of Darevskia rock lizards from Armenia composed of one sexual species ( D. valentini ), two asexual species ( D. armeniaca , D. unisexualis ), and their hybrids. We also analysed the specific composition of clusters and the species segregation by habitat. We used the Ripley’s K distance function to measure clustering spatial patterns, and the Delaunay’s triangulation to identify the clusters and their specific composition. We estimated the spatial segregation among species by calculating the overlap between species pairs, by comparing pairwise distances from males to other males and from males to females, and by comparing the frequencies of both sexes and reproduction modes (asexual and sexual) in plant cover and height using log-linear models. Species displayed a clustered spatial structure, with parthenogens (mainly D. armeniaca ) or their hybrids in all clusters. Females and males were concentrated in areas with medium plant cover. D. armeniaca and D. valentini were the species with the highest overlap. Males were closer to males than to females. This community displays an instantaneous spatial pattern resembling a population of a single sexual species. Spatial statistics offer new insights to analyse the spatial structure of species communities.","PeriodicalId":50896,"journal":{"name":"Acta Herpetologica","volume":"13 1","pages":"155-163"},"PeriodicalIF":0.8,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.13128/ACTA_HERPETOL-22830","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42897336","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}
Pub Date : 2018-12-31DOI: 10.13128/ACTA_HERPETOL-22876
Alejandro Montiel-Ugalde, Á. Aparicio, Eder Gaona Murillo, Taggert G. Butterfield, R. Macip-Ríos
Population ecology and demographic data are fundamental for species management and conservation planning. For Mexican kinosternid turtles there is a need for basic natural history and population ecology data. The Rough-footed Mud Turtle ( Kinosternon hirtipes murrayi ) is one of the lesser-studied species, even though it is broadly distributed, occurring from Western Texas to Central Mexico. We conducted a study on the species in Michoacan, Mexico for two years. Basic population parameters were estimated, and telemetry was used to measure home range size and movements of males and females. Population size in a 1.42-hectare wetland was calculated to be 301 (± SE 5.89) individuals, mainly adults. The adult sex ratio was skewed toward males (3.1:1). Female home range size was larger than that of males, and males moved larger distances between relocation events. The radio-tracked individuals did not leave the water during winter months and during the dry season. Habitat degradation due to eutrophication may be affecting population survivorship and recruitment.
{"title":"Population ecology and home range of the Mexican Rough-footed Mud Turtle (Kinosternon hirtipes murrayi) in Central Mexico","authors":"Alejandro Montiel-Ugalde, Á. Aparicio, Eder Gaona Murillo, Taggert G. Butterfield, R. Macip-Ríos","doi":"10.13128/ACTA_HERPETOL-22876","DOIUrl":"https://doi.org/10.13128/ACTA_HERPETOL-22876","url":null,"abstract":"Population ecology and demographic data are fundamental for species management and conservation planning. For Mexican kinosternid turtles there is a need for basic natural history and population ecology data. The Rough-footed Mud Turtle ( Kinosternon hirtipes murrayi ) is one of the lesser-studied species, even though it is broadly distributed, occurring from Western Texas to Central Mexico. We conducted a study on the species in Michoacan, Mexico for two years. Basic population parameters were estimated, and telemetry was used to measure home range size and movements of males and females. Population size in a 1.42-hectare wetland was calculated to be 301 (± SE 5.89) individuals, mainly adults. The adult sex ratio was skewed toward males (3.1:1). Female home range size was larger than that of males, and males moved larger distances between relocation events. The radio-tracked individuals did not leave the water during winter months and during the dry season. Habitat degradation due to eutrophication may be affecting population survivorship and recruitment.","PeriodicalId":50896,"journal":{"name":"Acta Herpetologica","volume":"13 1","pages":"109-115"},"PeriodicalIF":0.8,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.13128/ACTA_HERPETOL-22876","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46836520","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}
Pub Date : 2018-12-31DOI: 10.13128/ACTA_HERPETOL-23394
E. Simonov, Artem P. Lisachov, N. V. Oreshkova, K. Krutovsky
The steppes ratsnake, Elaphe dione (Pallas, 1773), is widely distributed across Eurasia, but the systematics and phylogeography of this species remain poorly studied. Sequencing of the full mitochondrial genome of this species provides a reference for its further study. Here, we report the full mitochondrial genome of an E. dione specimen from Krasnoyarsk Krai (East Siberia, Russia). We found that it is highly similar to the previously reported mitochondrial genome of the sister species, E. bimaculata . Both species misidentification by the authors of E. bimaculata mitogenome and the introgressive hybridization between these taxa can possibly explain this observation.
{"title":"The mitogenome of Elaphe bimaculata (Reptilia: Colubridae) has never been published: a case with the complete mitochondrial genome of E. dione","authors":"E. Simonov, Artem P. Lisachov, N. V. Oreshkova, K. Krutovsky","doi":"10.13128/ACTA_HERPETOL-23394","DOIUrl":"https://doi.org/10.13128/ACTA_HERPETOL-23394","url":null,"abstract":"The steppes ratsnake, Elaphe dione (Pallas, 1773), is widely distributed across Eurasia, but the systematics and phylogeography of this species remain poorly studied. Sequencing of the full mitochondrial genome of this species provides a reference for its further study. Here, we report the full mitochondrial genome of an E. dione specimen from Krasnoyarsk Krai (East Siberia, Russia). We found that it is highly similar to the previously reported mitochondrial genome of the sister species, E. bimaculata . Both species misidentification by the authors of E. bimaculata mitogenome and the introgressive hybridization between these taxa can possibly explain this observation.","PeriodicalId":50896,"journal":{"name":"Acta Herpetologica","volume":"1 1","pages":"185-189"},"PeriodicalIF":0.8,"publicationDate":"2018-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.13128/ACTA_HERPETOL-23394","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66787999","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}
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