Estrutura populacional, razão sexual e abundância de Podocnemis sextuberculata (Testudines, Podocnemididae) na Reserva de Desenvolvimento Sustentável Mamirauá, Amazonas, Brasil
We studied turtles in the focal area of the Reserva de Desenvolvimento Sustentável Mamirauá from September 1996 through August 1998. The reserve is located in the western part of the Brazilian Amazon, between the Japurá, Solimões, and Auti-Paraná rivers, near the city of Tefé, in the state of Amazon...
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| Format: | Article |
| Language: | English |
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Universidade de São Paulo
2003-01-01
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| Series: | Phyllomedusa: Journal of Herpetology |
| Subjects: | |
| Online Access: | http://www.phyllomedusa.esalq.usp.br/articles/volume2/number1/214363.pdf |
| _version_ | 1818984100438999040 |
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| author | Augusto Fachín-Terán Richard C. Vogt John B. Thorbjarnarson |
| author_facet | Augusto Fachín-Terán Richard C. Vogt John B. Thorbjarnarson |
| author_sort | Augusto Fachín-Terán |
| collection | DOAJ |
| description | We studied turtles in the focal area of the Reserva de Desenvolvimento Sustentável Mamirauá from September 1996 through August 1998. The reserve is located in the western part of the Brazilian Amazon, between the Japurá, Solimões, and Auti-Paraná rivers, near the city of Tefé, in the state of Amazonas. In this study the population structure, sex ratio and abundance of Podocnemis sextuberculata were investigated. We intensively studied the population of turtles in the Jarauá river basin in order to determine population structure. We sampled turtles in different sectors in the focal area of the reserve for one month each year during July and August of 1997 and 1998. We captured the turtles using flag gill nets and trammel nets. The type of net and the size of the nets used influenced the size of the turtles captured. The nets used by the local fishermen were sexually selective in the capture of the turtles. Sevent-two percent of the P. sextuberculata captured were adults; 13% juveniles and 14.7% subadults. During the second year of the study we found a lower density of turtles in the five areas wich we sampled each years. The sex ratio of captured P. sextuberculata was 1.87 males per female. |
| first_indexed | 2024-12-20T18:13:38Z |
| format | Article |
| id | doaj.art-59332155d15c497e805c7ccb6a8d060e |
| institution | Directory Open Access Journal |
| issn | 1519-1397 |
| language | English |
| last_indexed | 2024-12-20T18:13:38Z |
| publishDate | 2003-01-01 |
| publisher | Universidade de São Paulo |
| record_format | Article |
| series | Phyllomedusa: Journal of Herpetology |
| spelling | doaj.art-59332155d15c497e805c7ccb6a8d060e2022-12-21T19:30:26ZengUniversidade de São PauloPhyllomedusa: Journal of Herpetology1519-13972003-01-01214363Estrutura populacional, razão sexual e abundância de Podocnemis sextuberculata (Testudines, Podocnemididae) na Reserva de Desenvolvimento Sustentável Mamirauá, Amazonas, BrasilAugusto Fachín-TeránRichard C. VogtJohn B. ThorbjarnarsonWe studied turtles in the focal area of the Reserva de Desenvolvimento Sustentável Mamirauá from September 1996 through August 1998. The reserve is located in the western part of the Brazilian Amazon, between the Japurá, Solimões, and Auti-Paraná rivers, near the city of Tefé, in the state of Amazonas. In this study the population structure, sex ratio and abundance of Podocnemis sextuberculata were investigated. We intensively studied the population of turtles in the Jarauá river basin in order to determine population structure. We sampled turtles in different sectors in the focal area of the reserve for one month each year during July and August of 1997 and 1998. We captured the turtles using flag gill nets and trammel nets. The type of net and the size of the nets used influenced the size of the turtles captured. The nets used by the local fishermen were sexually selective in the capture of the turtles. Sevent-two percent of the P. sextuberculata captured were adults; 13% juveniles and 14.7% subadults. During the second year of the study we found a lower density of turtles in the five areas wich we sampled each years. The sex ratio of captured P. sextuberculata was 1.87 males per female.http://www.phyllomedusa.esalq.usp.br/articles/volume2/number1/214363.pdfTestudinesPodocnemididaePodocnemis sextuberculatapopulation structuresex-ratioabundanceAmazonasBrazil |
| spellingShingle | Augusto Fachín-Terán Richard C. Vogt John B. Thorbjarnarson Estrutura populacional, razão sexual e abundância de Podocnemis sextuberculata (Testudines, Podocnemididae) na Reserva de Desenvolvimento Sustentável Mamirauá, Amazonas, Brasil Phyllomedusa: Journal of Herpetology Testudines Podocnemididae Podocnemis sextuberculata population structure sex-ratio abundance Amazonas Brazil |
| title | Estrutura populacional, razão sexual e abundância de Podocnemis sextuberculata (Testudines, Podocnemididae) na Reserva de Desenvolvimento Sustentável Mamirauá, Amazonas, Brasil |
| title_full | Estrutura populacional, razão sexual e abundância de Podocnemis sextuberculata (Testudines, Podocnemididae) na Reserva de Desenvolvimento Sustentável Mamirauá, Amazonas, Brasil |
| title_fullStr | Estrutura populacional, razão sexual e abundância de Podocnemis sextuberculata (Testudines, Podocnemididae) na Reserva de Desenvolvimento Sustentável Mamirauá, Amazonas, Brasil |
| title_full_unstemmed | Estrutura populacional, razão sexual e abundância de Podocnemis sextuberculata (Testudines, Podocnemididae) na Reserva de Desenvolvimento Sustentável Mamirauá, Amazonas, Brasil |
| title_short | Estrutura populacional, razão sexual e abundância de Podocnemis sextuberculata (Testudines, Podocnemididae) na Reserva de Desenvolvimento Sustentável Mamirauá, Amazonas, Brasil |
| title_sort | estrutura populacional razao sexual e abundancia de podocnemis sextuberculata testudines podocnemididae na reserva de desenvolvimento sustentavel mamiraua amazonas brasil |
| topic | Testudines Podocnemididae Podocnemis sextuberculata population structure sex-ratio abundance Amazonas Brazil |
| url | http://www.phyllomedusa.esalq.usp.br/articles/volume2/number1/214363.pdf |
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