D to environmental constraints, winter aggregations of squamates otherwise considered solitary are becoming increasingly common worldwide (Gardner et al., 2015). Community aggregations in lizards are little known and probably underestimated (Gardner et al., 2015) although certain European species are known to aggregate for hibernation, for example Agama stellio (Loumbourdis, 1983), Chalcides chalcides (Capula et al., 2003), Anguis fragilis (Karch, 2022), and Zootoca vivipara (Hodges & Seabrook, 2022). Ocellated lizards generally hibernate from November to March depending on temperature (Matéo, 2017) but for reptiles suitable hibernation sites are scarce in the wild (Whiting & Wile, 2017) and crucial for their survival (Bonnet et al., 2009). Ocellated lizards occupy a network of refuges both to avoid predation in the reptile active period and to act as a hibernacula (Tatin et al., 2013), but only two or three of these refuges are used regularly (Grillet et al., 2010). It would appear that in continental Europe the ocellated lizard is a territorial and solitary species (Vincente, 1989) but, in contrast, island populations have developed pronounced social behaviour due to environmental constraints. Consequently, in France, on the island of Oléron, communal refuges are known (Doré et al., 2015) and in Portugal, on the island of Berlenga, a communal hibernaculum has been reported (Paulo, 1988). Given that suitable hibernation sites are essential for the survival of ocellated lizards, a knowledge of their physical characteristics and how they are used is crucial for effective conservation. We set out to characterise a hibernaculum in a small population of ocellated lizards in a Mediterranean almond grove. After the discovery and confirmation of the existence of a communal hibernaculum, we filmed the occupants during hibernation and made several associated temperature measurements. The research reported here was undertaken in the framework of the French PNA (National Action Plan) on the ecology of this threatened species (Thienpont, 2020).
{"title":"04. Aggregation and movements of male ocellated lizards [Timon lepidus] during hibernation in mainland France observed with an endoscope","authors":"Grégory Deso","doi":"10.33256/hb160.1922","DOIUrl":"https://doi.org/10.33256/hb160.1922","url":null,"abstract":"D to environmental constraints, winter aggregations of squamates otherwise considered solitary are becoming increasingly common worldwide (Gardner et al., 2015). Community aggregations in lizards are little known and probably underestimated (Gardner et al., 2015) although certain European species are known to aggregate for hibernation, for example Agama stellio (Loumbourdis, 1983), Chalcides chalcides (Capula et al., 2003), Anguis fragilis (Karch, 2022), and Zootoca vivipara (Hodges & Seabrook, 2022). Ocellated lizards generally hibernate from November to March depending on temperature (Matéo, 2017) but for reptiles suitable hibernation sites are scarce in the wild (Whiting & Wile, 2017) and crucial for their survival (Bonnet et al., 2009). Ocellated lizards occupy a network of refuges both to avoid predation in the reptile active period and to act as a hibernacula (Tatin et al., 2013), but only two or three of these refuges are used regularly (Grillet et al., 2010). It would appear that in continental Europe the ocellated lizard is a territorial and solitary species (Vincente, 1989) but, in contrast, island populations have developed pronounced social behaviour due to environmental constraints. Consequently, in France, on the island of Oléron, communal refuges are known (Doré et al., 2015) and in Portugal, on the island of Berlenga, a communal hibernaculum has been reported (Paulo, 1988). Given that suitable hibernation sites are essential for the survival of ocellated lizards, a knowledge of their physical characteristics and how they are used is crucial for effective conservation. We set out to characterise a hibernaculum in a small population of ocellated lizards in a Mediterranean almond grove. After the discovery and confirmation of the existence of a communal hibernaculum, we filmed the occupants during hibernation and made several associated temperature measurements. The research reported here was undertaken in the framework of the French PNA (National Action Plan) on the ecology of this threatened species (Thienpont, 2020).","PeriodicalId":35972,"journal":{"name":"Herpetological Bulletin","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41366864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"07. Reproductive behaviour of the threatened rusted frog [Telmatobius rubigo]","authors":"M. S. Gastón","doi":"10.33256/hb160.2730","DOIUrl":"https://doi.org/10.33256/hb160.2730","url":null,"abstract":"","PeriodicalId":35972,"journal":{"name":"Herpetological Bulletin","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48138734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"16. Predation on the common house gecko Hemidactylus frenatus by an Asian hermit spider Nephilengys malabarensis in Sri Lanka","authors":"P. Zdunek","doi":"10.33256/hb160.48","DOIUrl":"https://doi.org/10.33256/hb160.48","url":null,"abstract":"","PeriodicalId":35972,"journal":{"name":"Herpetological Bulletin","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41988551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"09. First live stranding of a leatherback sea turtle [Dermochelys coriacea] in Alagoas, north-east Brazil","authors":"W. A. Bonfim","doi":"10.33256/hb160.3537","DOIUrl":"https://doi.org/10.33256/hb160.3537","url":null,"abstract":"","PeriodicalId":35972,"journal":{"name":"Herpetological Bulletin","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43330108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The clouded monitor lizard (Varanus nebulosus), is a semi arboreal lizard widely distributed throughout much of South and Southeast Asia. Despite its wide distribution there is almost nothing known about the ecology of this species. During the course of an 11-month radio telemetry study, in a reserve with a tropical savannah climate (Köppen Aw), we made the first records of brumation in this monitor lizard. This contrasts with earlier reports of the same species in a tropical monsoon climate (Köppen Am) where no brumation was recorded. We successfully tracked 10 individuals throughout their inactive period and found that seven of the monitors selected tree hollows within the endangered Shorea henryana tree. All tree hollows selected faced between the east and south cardinal points (90 °-180 °). The average brumation period was 100 days (range 86-113 days, standard deviation - 10.7), beginning in November at a time of falling temperatures and humidities and ending in early March when these variables had been restored. Eight of the 10 monitors basked partially or completely out of their shelters on multiple occasions. Of those eight monitors, two individuals moved between shelters during brumation after an extended period in one location. Our observations provide insight into the relationship between V. nebulosus and the tree S.henryana, in the dry evergreen forests of north-eastern Thailand. Future research should investigate how this tree will be affected by climate change in the coming decades and what that could mean for the future persistence of the clouded monitors that appear to rely on it.
{"title":"03. Brumation of the clouded monitor lizard Varanus nebulosus in north-eastern Thailand","authors":"J. Goodyear","doi":"10.33256/hb159.1217","DOIUrl":"https://doi.org/10.33256/hb159.1217","url":null,"abstract":"The clouded monitor lizard (Varanus nebulosus), is a semi arboreal lizard widely distributed throughout much of South and Southeast Asia. Despite its wide distribution there is almost nothing known about the ecology of this species. During the course of an 11-month radio telemetry study, in a reserve with a tropical savannah climate (Köppen Aw), we made the first records of brumation in this monitor lizard. This contrasts with earlier reports of the same species in a tropical monsoon climate (Köppen Am) where no brumation was recorded. We successfully tracked 10 individuals throughout their inactive period and found that seven of the monitors selected tree hollows within the endangered Shorea henryana tree. All tree hollows selected faced between the east and south cardinal points (90 °-180 °). The average brumation period was 100 days (range 86-113 days, standard deviation - 10.7), beginning in November at a time of falling temperatures and humidities and ending in early March when these variables had been restored. Eight of the 10 monitors basked partially or completely out of their shelters on multiple occasions. Of those eight monitors, two individuals moved between shelters during brumation after an extended period in one location. Our observations provide insight into the relationship between V. nebulosus and the tree S.henryana, in the dry evergreen forests of north-eastern Thailand. Future research should investigate how this tree will be affected by climate change in the coming decades and what that could mean for the future persistence of the clouded monitors that appear to rely on it.","PeriodicalId":35972,"journal":{"name":"Herpetological Bulletin","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49007333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"14. A case of cannibalism in Podarcis muralis from Dorset, England","authors":"Bernardo Lam","doi":"10.33256/hb159.4647","DOIUrl":"https://doi.org/10.33256/hb159.4647","url":null,"abstract":"","PeriodicalId":35972,"journal":{"name":"Herpetological Bulletin","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46423680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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