Results 31 to 40 of about 4,111 (235)

HISTOLOGICAL DESCRIPTION OF THE REPRODUCTIVE SYSTEM OF MALE AND FEMALE HATCHLINGS OF THE MAGDALENA RIVER TURTLE (Podocnemis lewyana)

open access: yesActa Biológica Colombiana, 2014
In this study we described the macroscopic and microscopic histology of the reproductive system of male and female Podocnemis lewyana neonates (3.5 months old).
Andrés Camilo Sánchez Ospina   +2 more
doaj   +1 more source

Predation on adult females of Podocnemis expansa Schweigger (Testudines, Podocnemididae) by Panthera onca Linnaeus (Carnivora, Felidae), in Tocantins State [PDF]

open access: yes, 2009
Podocnemis expansa (tartaruga-da-amazônia) é o maior e mais importante representante da fauna de quelônios da Amazônia devido à sua importância econômica como fonte alimentar para as populações indígenas e ribeirinhas desta região.
Costa Gonçalves Portelinha, Thiago   +2 more
core   +2 more sources

ESPÉCIES VEGETAIS UTILIZADAS NA ALIMENTAÇÃO DE Podocnemis unifilis, Troschel 1948 (REPTILIA, TESTUDINAE, PELOMEDUSIDAE) NA REGIÃO DO PRACUÚBA -AMAPÁ-BRASIL

open access: yesCiência Animal Brasileira, 2006
Foram obtidas, junto às comunidades que vivem às margens dos rios e lagos da região do Pracuúba, Estado do Amapá, informações sobre 35 espécies vegetais que fazem parte da alimentação natural de Podocnemis unifilis (tracajá).
Yeda Soares de Lucena Bataus   +4 more
doaj   +3 more sources

Evolutionary insights in Amazonian turtles (Testudines, Podocnemididae): co-location of 5S rDNA and U2 snRNA and wide distribution of Tc1/Mariner

open access: yesBiology Open, 2020
Eukaryotic genomes exhibit substantial accumulation of repetitive DNA sequences. These sequences can participate in chromosomal reorganization events and undergo molecular cooption to interfere with the function and evolution of genomes.
Manoella Gemaque Cavalcante   +3 more
doaj   +1 more source

Unintended multispecies co-benefits of an Amazonian community-based conservation programme [PDF]

open access: yes, 2018
Urgent challenges posed by widespread degradation in tropical ecosystems with poor governance require new development pathways to reconcile biodiversity conservation and human welfare.
Andrade, Paulo C. M.   +3 more
core   +2 more sources

Interdependencies between Indigenous peoples, local communities, and freshwater systems in a changing Amazon. [PDF]

open access: yesConserv Biol
Abstract Globally, Indigenous peoples and local communities (IPs and LCs) are fighting for the recognition of their knowledge and decision‐making authority in freshwater conservation. In the Amazon, decision‐making around freshwater management and conservation has often overlooked Indigenous and local knowledge (ILK) and the connections between ...
Athayde S   +8 more
europepmc   +2 more sources

Two new pleurodiran turtles from the Portezuelo Formation (Upper Cretaceous) of northern Patagonia, Argentina [PDF]

open access: yes, 2003
Fil: De la Fuente, Marcelo Saúl. División Paleontología Vertebrados. Facultad de Ciencias Naturales y Museo.
De la Fuente, Marcelo Saúl
core   +1 more source

Temperature-sex determination in Podocnemis expansa (Testudines, Podocnemididae) [PDF]

open access: yesIheringia. Série Zoologia, 2011
This study has been carried out at the central region of the Araguaia river on the border between the states of Goiás and Mato Grosso in the Brazilian Amazon Basin from September to December 2000. We recorded temperature fluctuation, clutch-size, incubation period and hatching success rate and hatchlings' sex ratio of five nests of Podocnemis expansa ...
Bonach, Kelly   +3 more
openaire   +4 more sources

Transferrin polymorphism in Amazon turtle (Podocnemis expansa) stocks [PDF]

open access: yesBrazilian Journal of Genetics, 1996
The transferrin gene locus (Tf) was investigated in five populations of the Amazon turtle (Podocnemis expansa) sampled from five geographical areas in the Amazon region. This locus was polymorphic, showing three genotypes (Tfa Tfa, Tfa Tfb and Tfb Tfb), presumably encoded by two co-dominant alleles, Tfa and Tfb.
Teixeira, Aylton Saturnino   +3 more
openaire   +4 more sources

Balancing conservation and traditional use of yellow-spotted river turtle (Podocnemis unifilis) in Southern Rupununi, Guyana

open access: yesFrontiers in Ecology and Evolution
The yellow-spotted river turtle (Podocnemis unifilis) is widely distributed across the Amazon, Orinoco, and Essequibo River basins. Studies from the Amazon and Orinoco regions highlight the species’ importance to local communities for food, income, and ...
Nathalie van Vliet   +3 more
semanticscholar   +1 more source

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