Ecologia populacional de podocnemis sextuberculata e podocnemis unifilis no médio rio Xingu, Pará
There are currently, in 13 families of Testudines, divided into approximately 300 species. The genus Podocnemis has importance in the feeding, symbolic and also medicinal, especially for the communities of the Amazon and has been impacted in the populations of diverse species, with the loss of ha...
| Autor principal: | Silva, Mauro Celso Hoffmann da |
|---|---|
| Grau: | Dissertação |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Tocantins
2019
|
| Assuntos: | |
| Acesso em linha: |
http://hdl.handle.net/11612/1374 |
| id |
ir-11612-1374 |
|---|---|
| recordtype |
dspace |
| spelling |
ir-11612-13742019-09-26T06:01:01Z Ecologia populacional de podocnemis sextuberculata e podocnemis unifilis no médio rio Xingu, Pará Silva, Mauro Celso Hoffmann da Malvasio, Adriana Quelônios; Captura; Abundância; Densidade; Chelonia; Catch; Abundance; Density CNPQ::CIENCIAS BIOLOGICAS There are currently, in 13 families of Testudines, divided into approximately 300 species. The genus Podocnemis has importance in the feeding, symbolic and also medicinal, especially for the communities of the Amazon and has been impacted in the populations of diverse species, with the loss of habitats, besides the direct hunting, especially for commercialization. Thus, the present study aims to establish the population structure of P. sextuberculata and P. unifilis, in the region of influence of the UHE Belo Monte, on the Xingu- PA river. The data were collected between the years of 2012 to 2017. For P. sextuberculata, catches were carried out in the Tabuleiro do Embaubal in the ebb, flood and flood, using four different capture methods (waiting net, trawl, fishing and viration), with a catch rate of 16.5% for the study, (86 ♂ (13.6%), 590 ♀ (86.4%) and 7 juveniles (1), with a total of 4128 hours of sample effort, where a total of 683 %)), the viration method was exclusive for the females and the most efficient among the methods, and the time of the year with the highest catch was ebullient, there was only a positive relationship between the trail and the mass of the female. For P. unifilis, senses were performed in four different locations within the area of direct influence of the Belo Monte Bus, a total of 1214 transects were covered, with a total of 6070 km of river, accounting for 6214 individuals sighted, with density at 1.02 ind/km, where 481 were males (7.7%) and 928 females (14.9%). In which the sex ratio, 1 ♂: 1.93 ♀, 281 adult males were seen, which represented 4.5% and the 200 young ones (3.22%) of the population sampled. The total number of adult females counted was 853 (13.73%), and the number of young females was 75 (1.21%). The number of adults who did not have their sex determined at the time of the census was 537 (8.64%) and the number of unidentified youths was 4,268 (68.68%). The area with the highest density was area 6, with 2.89 ind/km. The water surface temperature at the beginning of the transect was the only environmental variable studied that presented a significant relation with the density. Existem atualmente, em 13 famílias de Testudines, cerca de 300 espécies de quelônios. O gênero Podocnemis possui importância na alimentação, simbólica e também medicinal, especialmente para as comunidades da Amazônia e vem sofrendo impactos nas populações de diversas espécies, com a perda de habitats, além da caça direta, especialmente para comercialização. Desta forma, o presente estudo pretende estabelecer a estrutura populacional de P. sextuberculata e P. unifilis, na região de influência do barramento da UHE Belo Monte, no rio Xingu-PA. Os dados foram coletados entre os anos de 2012 a 2017. Para P. sextuberculata foram realizadas capturas no Tabuleiro do Embaubal na vazante, enchente e cheia, utilizando quatro métodos de captura diferentes (rede de espera, rede de arrasto, pesca e viração), com um total de 4128 horas de esforço amostral, onde foram capturados um total de 683 exemplares, com uma taxa de captura de 16.5% para o estudo, (86 ♂ (13.6%), 590 ♀ (86.4%) e 7 juvenis (1%)). O método de viração foi exclusivo para as fêmeas e o mais eficiente entre os métodos, e a época do ano com maior captura foi vazante, só houve relação positiva entre o rastro e massa da fêmea. Para as P. unifilis, foi realizado sensos em quatro localidades diferentes dentro da área de influência direta do Barramento Belo Monte, foram percorridos um total de 1214 transectos, com um total 6070 km de rio, contabilizando 6214 indivíduos avistados, ficando a densidade em 1.02 ind/km, onde 481 eram machos (7,7%) e 928 fêmeas (14,9%). No qual a razão sexual, 1 ♂ : 1.93 ♀, foram avistados 281 machos adultos, os quais representaram 4.5 % e os 200 juvenis (3.22%) da população amostrada. O total de fêmeas adultas contabilizadas foi 853 (13.73%), já a contagem das juvenis ficou em 75 (1.21%). A quantidade de indivíduo adultos que não tiveram seu sexo determinado na hora do censo foi de 537 (8.64%) e a quantidade de juvenis não identificados foi 4.268 (68.68%). A área com maior densidade foi a área 6, com 2.89 ind/km. A temperatura da superfície da água no início do transecto foi a única variável ambiental estudada que apresentou relação significativa com a densidade. 2019-09-25T17:41:38Z 2019-09-25T17:41:38Z 2019-04-15 Dissertação SILVA, Mauro Celso Hoffmann da. Ecologia populacional de podocnemis sextuberculata e podocnemis unifilis no médio rio Xingu, Pará.2019.70f. Dissertação (Mestrado Biodiversidade, Ecologia e Conservação) – Universidade Federal do Tocantins, Programa de Pós-Graduação em Biodiversidade, Ecologia e Conservação, Porto Nacional, 2019. http://hdl.handle.net/11612/1374 pt_BR Open Access application/pdf application/pdf Universidade Federal do Tocantins BR Programa de Pós-Graduação em Ecologia de Ecótonos - PPGEE Porto Nacional |
| institution |
Repositório Institucional - Universidade Federal do Tocantins - UFT |
| collection |
RepositorioUFT |
| language |
pt_BR |
| topic |
Quelônios; Captura; Abundância; Densidade; Chelonia; Catch; Abundance; Density CNPQ::CIENCIAS BIOLOGICAS |
| spellingShingle |
Quelônios; Captura; Abundância; Densidade; Chelonia; Catch; Abundance; Density CNPQ::CIENCIAS BIOLOGICAS Silva, Mauro Celso Hoffmann da Ecologia populacional de podocnemis sextuberculata e podocnemis unifilis no médio rio Xingu, Pará |
| topic_facet |
Quelônios; Captura; Abundância; Densidade; Chelonia; Catch; Abundance; Density CNPQ::CIENCIAS BIOLOGICAS |
| description |
There are currently, in 13 families of Testudines, divided into approximately 300
species. The genus Podocnemis has importance in the feeding, symbolic and also medicinal,
especially for the communities of the Amazon and has been impacted in the populations of
diverse species, with the loss of habitats, besides the direct hunting, especially for
commercialization. Thus, the present study aims to establish the population structure of P.
sextuberculata and P. unifilis, in the region of influence of the UHE Belo Monte, on the Xingu-
PA river. The data were collected between the years of 2012 to 2017. For P. sextuberculata,
catches were carried out in the Tabuleiro do Embaubal in the ebb, flood and flood, using four
different capture methods (waiting net, trawl, fishing and viration), with a catch rate of 16.5%
for the study, (86 ♂ (13.6%), 590 ♀ (86.4%) and 7 juveniles (1), with a total of 4128 hours of
sample effort, where a total of 683 %)), the viration method was exclusive for the females and
the most efficient among the methods, and the time of the year with the highest catch was
ebullient, there was only a positive relationship between the trail and the mass of the female.
For P. unifilis, senses were performed in four different locations within the area of direct
influence of the Belo Monte Bus, a total of 1214 transects were covered, with a total of 6070
km of river, accounting for 6214 individuals sighted, with density at 1.02 ind/km, where 481
were males (7.7%) and 928 females (14.9%). In which the sex ratio, 1 ♂: 1.93 ♀, 281 adult
males were seen, which represented 4.5% and the 200 young ones (3.22%) of the population
sampled. The total number of adult females counted was 853 (13.73%), and the number of
young females was 75 (1.21%). The number of adults who did not have their sex determined at
the time of the census was 537 (8.64%) and the number of unidentified youths was 4,268
(68.68%). The area with the highest density was area 6, with 2.89 ind/km. The water surface
temperature at the beginning of the transect was the only environmental variable studied that
presented a significant relation with the density. |
| author_additional |
Malvasio, Adriana |
| author_additionalStr |
Malvasio, Adriana |
| format |
Dissertação |
| author |
Silva, Mauro Celso Hoffmann da |
| title |
Ecologia populacional de podocnemis sextuberculata e podocnemis unifilis no médio rio Xingu, Pará |
| title_short |
Ecologia populacional de podocnemis sextuberculata e podocnemis unifilis no médio rio Xingu, Pará |
| title_full |
Ecologia populacional de podocnemis sextuberculata e podocnemis unifilis no médio rio Xingu, Pará |
| title_fullStr |
Ecologia populacional de podocnemis sextuberculata e podocnemis unifilis no médio rio Xingu, Pará |
| title_full_unstemmed |
Ecologia populacional de podocnemis sextuberculata e podocnemis unifilis no médio rio Xingu, Pará |
| title_sort |
ecologia populacional de podocnemis sextuberculata e podocnemis unifilis no médio rio xingu, pará |
| publisher |
Universidade Federal do Tocantins |
| publishDate |
2019 |
| url |
http://hdl.handle.net/11612/1374 |
| _version_ |
1787134936793219072 |
| score |
11.755432 |