Chelonian Conservation and Biology最新文献_第8页

Hypothermic Stunning in Juvenile Green Turtles (Chelonia mydas) in Uruguayan Coastal Waters: Learning for Future Events 乌拉圭沿海水域幼年绿海龟（Chelonia mydas）的低温眩晕：为未来事件学习

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2017-10-02 DOI: 10.2744/CCB-1243.1

G. Vélez-Rubio, R. Trinchin, A. Estrades, Virginia Ferrando, J. Tomás

引用次数: 4

Hatching Success and Predation of Bog Turtle (Glyptemys muhlenbergii) Eggs in New Jersey and Pennsylvania 新泽西州和宾夕法尼亚州沼泽龟（Glyptemys muhlenbergii）卵的孵化成功和捕食

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2017-10-02 DOI: 10.2744/CCB-1237.1

R. Zappalorti, A. M. Tutterow, S. E. Pittman, J. Lovich

{"title":"Hatching Success and Predation of Bog Turtle (Glyptemys muhlenbergii) Eggs in New Jersey and Pennsylvania","authors":"R. Zappalorti, A. M. Tutterow, S. E. Pittman, J. Lovich","doi":"10.2744/CCB-1237.1","DOIUrl":"https://doi.org/10.2744/CCB-1237.1","url":null,"abstract":"Abstract Nest-site selection by most turtles affects the survival of females and their offspring. Although bog turtles (Glyptemys muhlenbergii) do not typically leave their wetlands for nesting, nest-site selection can impact hatching success and hatchling survival. Between 1974 and 2012, we monitored the fates of 258 bog turtle eggs incubated in the field and 91 eggs incubated under laboratory conditions from 11 different bogs, fens, or wetland complexes in New Jersey and Pennsylvania. Laboratory-incubated eggs exhibited the greatest hatching success (81%), but we did not detect a significant difference in hatching success between nests protected with predator excluder cages (43%) and unprotected nests (33%). However, we found significantly lower predation rates in protected nests, suggesting that while predator excluder cages successfully reduced predation, other environmental factors persisted to reduce egg survival in the field. Natural hatching success was potentially reduced by poor weather conditions, which may have resulted in embryo developmental problems, dehydration, or embryos drowning in the egg. Our results suggest that egg depredation, coupled with embryo developmental problems and infertility, are limiting factors to hatching success in our study populations. Using predator excluder cages to protect bog turtle eggs in the field, or incubating eggs in the laboratory and releasing hatchlings at original nesting areas, may be an effective conservation tool for recovering populations of this federally threatened species.","PeriodicalId":50703,"journal":{"name":"Chelonian Conservation and Biology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2017-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2744/CCB-1237.1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45841274","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

Regional Conservation Implications of Green Turtle (Chelonia mydas) Genetic Stock Composition in China 中国绿龟(Chelonia mydas)遗传种群组成的区域保护意义

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2017-09-26 DOI: 10.2744/CCB-1253.1

C. Ng, P. Dutton, H. Gu, Tsung-Hsien Li, Mingbin Ye, Z. Xia, F. Zhang, J. Duan, C. Hsu, G. Balazs, M. Murphy

{"title":"Regional Conservation Implications of Green Turtle (Chelonia mydas) Genetic Stock Composition in China","authors":"C. Ng, P. Dutton, H. Gu, Tsung-Hsien Li, Mingbin Ye, Z. Xia, F. Zhang, J. Duan, C. Hsu, G. Balazs, M. Murphy","doi":"10.2744/CCB-1253.1","DOIUrl":"https://doi.org/10.2744/CCB-1253.1","url":null,"abstract":"Abstract Sea turtles are globally endangered and face anthropogenic threats, such as direct harvest, bycatch, and habitat degradation. Genetic studies help identify connectivity between nesting and foraging grounds for conservation and management. However, information on genetic stock composition of green turtles (Chelonia mydas) in the South China Region (including Hong Kong, Guangdong Province, and Taiwan) is severely limited. In this study, mixed stock analysis based on the 760-bp mitochondrial DNA (mtDNA) control region of green turtles (n = 110) revealed that the primary source rookeries in the Pacific contributing to foraging green turtle aggregations in the South China Region were Peninsular Malaysia, Yap in the Federated States of Micronesia, Aru of Indonesia, Sulu Sea, northeastern Borneo, Republic of Marshall Islands, Wan-an of Taiwan, and the central Ryukyu and Yaeyama of Japan. This study is the first to investigate and report the source nesting populations of a relatively large number of foraging green turtles in the region. The genetic results also indicate possible use of coastal Guangdong, the Taiwan Strait, and the East China Sea as habitat by pelagic-phase green turtles hatched from nesting beaches in Taiwan and mainland China. As a precautionary approach for effective sea turtle conservation, conservation and management of each distinct green turtle source rookery as well as foraging aggregations sourced from multiple natal origins in the South China Region is needed to preserve genetic diversity for the species. Anthropogenic threats to nesting and foraging habitats and migratory pathways, such as direct take for trade and fishery impacts, should be thoroughly assessed and effectively mitigated by regional collaboration to sustain these populations.","PeriodicalId":50703,"journal":{"name":"Chelonian Conservation and Biology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2017-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2744/CCB-1253.1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44534463","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: 12

Loggerhead Nesting in the Northern Gulf of Mexico: Importance of Beach Slope to Nest Site Selection in the Mississippi Barrier Islands 墨西哥湾北部的Loggerhead筑巢：海滩坡度对密西西比屏障群岛筑巢地点选择的重要性

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2017-09-20 DOI: 10.2744/CCB-1256.1

A. S. Maurer, Matthew W. Johnson

引用次数: 6

Influences on Standard Metabolism in Eastern Box Turtles (Terrapene carolina) 东箱龟标准代谢的影响

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2017-09-14 DOI: 10.2744/CCB-1252.1

C. Gienger, Eva M. Urdiales

引用次数: 4

How Best to Protect the Nests of the Endangered Loggerhead Turtle Caretta caretta from Monitor Lizard Predation 如何最好地保护濒危Loggerhead Turtle Caretta Caretta的巢穴免受监控蜥蜴的捕食

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2017-09-13 DOI: 10.2744/CCB-1251.1

J. Lei, D. Booth

引用次数: 12

Sexual Dimorphism in Body Size and Shape of Beal's Eyed Turtle (Sacalia bealei) Beal’s Eyed Turtle（Sacalia bealei）体型的两性异形

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2017-08-31 DOI: 10.2744/CCB-1225.1

Liu Lin, Daniel Gaillard, Qingru Hu, Jiangbo Yang, Zhongdong Chen, Feiyu Zhou, F. Xiao, H. Shi

{"title":"Sexual Dimorphism in Body Size and Shape of Beal's Eyed Turtle (Sacalia bealei)","authors":"Liu Lin, Daniel Gaillard, Qingru Hu, Jiangbo Yang, Zhongdong Chen, Feiyu Zhou, F. Xiao, H. Shi","doi":"10.2744/CCB-1225.1","DOIUrl":"https://doi.org/10.2744/CCB-1225.1","url":null,"abstract":"Abstract We studied the sexual dimorphism in body size and shape of Beal's eyed turtle, Sacalia bealei, by measuring 15 morphological characteristics of 68 adult individuals (40 females, 28 males) collected from Fujian Province, China. Females were slightly larger than males in carapace length with a sexual dimorphism index of 0.09. This translated into greater absolute values of females for all the traits we measured except for tail length, preanal tail length, and analia to supracaudal junction length. Comparisons between the sexes of size-corrected morphological traits indicated that females exhibited a longer plastron and higher carapace relative to carapace length, thereby providing a larger internal volume. Females also exhibited relatively wider heads. In males, the plastron was smaller and more indented than in females and the openings between the plastron and the carapace were also more developed. Overall, females were larger in size and displayed a more voluminous shell than did males while males had longer tails and larger spaces available to move the legs, head, and tail.","PeriodicalId":50703,"journal":{"name":"Chelonian Conservation and Biology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2017-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2744/CCB-1225.1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47648958","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: 3

Kinship Analysis of Offspring of the Giant South American River Turtle (Podocnemis expansa) Using Microsatellite DNA Markers 利用微卫星DNA标记分析南美大河龟后代的亲缘关系

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2017-08-23 DOI: 10.2744/CCB-1233.1

C. Fantin, J. Ferreira, M. Magalhães, Thais da Silva Damasseno, Dorothy Ivila de Melo Pereira, R. Vogt

{"title":"Kinship Analysis of Offspring of the Giant South American River Turtle (Podocnemis expansa) Using Microsatellite DNA Markers","authors":"C. Fantin, J. Ferreira, M. Magalhães, Thais da Silva Damasseno, Dorothy Ivila de Melo Pereira, R. Vogt","doi":"10.2744/CCB-1233.1","DOIUrl":"https://doi.org/10.2744/CCB-1233.1","url":null,"abstract":"Abstract The giant South American river turtle (Podocnemis expansa) is the largest extant member of the suborder Pleurodira and the largest freshwater chelonian in South America. Owing to its size, its meat is sought for consumption and trade in the Amazon region. The aim of the present study was to investigate the reproductive behavior of 2 different populations of P. expansa. Allelic frequency variation was studied in 6 DNA microsatellite loci of recently hatched offspring from 8 nests on a beach in the municipality of Oriximiná in the state of Pará, Brazil. Multiple paternity was identified in all nests studied. Between 5 and 10 fathers contributed to each nest. Compared with previous studies, a greater frequency of multiple paternity and a greater number of fathers contributing to each nest were found in the present investigation. The results suggest that populations from different locations may exhibit different paternity patterns due to ecological or biological differences. By comparison with previous studies, we suggest that the differences in the number of nests, proportion of offspring per nest, and number of loci analyzed in each study may influence the frequency of multiple paternity detected.","PeriodicalId":50703,"journal":{"name":"Chelonian Conservation and Biology","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2017-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2744/CCB-1233.1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42047699","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

Diet of Two Endangered Box Turtles (Cuora spp.) on Hainan Island, China 海南岛两种濒危箱龟（Cuora spp.）的日粮

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2017-08-23 DOI: 10.2744/CCB-1246.1

F. Xiao, Jichao Wang, Zaizhong Long, H. Shi

引用次数: 5

Chelonian Conservation and Biology Volume 16: New Changes Signal a Bright Future 龟保护和生物学第16卷:新的变化标志着光明的未来

IF 0.7 4区生物学

Chelonian Conservation and Biology Pub Date : 2017-06-13 DOI: 10.2744/1071-8443-16.1.1

J. Seminoff, A. Rhodin, E. Goode

引用次数: 2