Results 21 to 30 of about 1,295 (173)

High variation of mitochondrial DNA diversity as compared to nuclear microsatellites in mammalian populations

Ecological Research, Volume 36, Issue 2, Page 206-220, March 2021., 2021
The empirical relationship between mitochondrial DNA haplotype diversity and microsatellite DNA heterozygosity in 739 populations of 108 mammalian species. Haplotype diversity was higher than the theoretical prediction. Abstract The effective gene number (the number of genes that can be inherited) of mitochondrial DNA (mtDNA) is one‐fourth of that of ...
Takashi Saitoh
wiley   +1 more source

Density and Abundance Estimation of Amazonian River Dolphins: Understanding Population Size Variability

Journal of Marine Science and Engineering, 2021
The dolphins Inia geoffrensis—boto and Sotalia fluviatilis—tucuxi are threatened cetaceans inhabiting river ecosystems in South America; population numbers are still lacking for many areas.
Mariana Paschoalini, Fernando Trujillo, Miriam Marmontel, Federico Mosquera-Guerra, Renan Lopes Paitach, Heloise Pavanato Julião, Gabriel Melo Alves dos Santos, Paul André Van Damme, André Giovanni de Almeida Coelho, Mariana Escobar Wilson White, Alexandre Novaes Zerbini   +10 more
doaj   +1 more source

Posterior Respiratory Apparatus of Inia geoffrensis and Sotalia fluviatilis: Structure and Ultrastructure [PDF]

International Journal of Morphology, 2017
SUMMARY: This study aimed to characterize the structures of the posterior respiratory system of two species of river dolphins: Inia geoffrensis and Sotalia fluviatilis. The respiratory tract of both species was evaluated using macro and microscopic techniques.
Santos Júnior, Luzivaldo Castro dos, Marmontel, Miriam, Santos, Francisco Glauco de Araújo, Rici, Rose Eli Grassi, Miglino, Maria Angélica, Carvalho, Yuri Karaccas de   +5 more
openaire   +2 more sources

Phylogeny and adaptive evolution of the brain-development gene microcephalin (MCPH1) in cetaceans. [PDF]

, 2011
BACKGROUND: Representatives of Cetacea have the greatest absolute brain size among animals, and the largest relative brain size aside from humans. Despite this, genes implicated in the evolution of large brain size in primates have yet to be surveyed in ...
Clark, Clay, Gatesy, John, McGowen, Michael R, Montgomery, Stephen H   +3 more
core   +6 more sources

TAXONOMIC STATUS OF THE GENUSSOTALIA: SPECIES LEVEL RANKING FOR “TUCUXI” (SOTALIA FLUVIATILIS) AND “COSTERO” (SOTALIA GUIANENSIS) DOLPHINS [PDF]

Marine Mammal Science, 2007
AbstractDolphins of the genusSotaliaare found along the Caribbean and Atlantic coasts of Central and South America and in the Amazon River and most of its tributaries. At present, the taxonomy of these dolphins remains unresolved. Although five species were described in the late 1800s, only one species is recognized currently (Sotalia fluviatilis) with
Caballero, S., Trujillo, F., Vianna, J. A., Barrios-Garrido, H., Montiel, M. G., Beltran-Pedreros, S., Marmontel, M., Santos, M. C., Rossi-Santos, M., Santos, F. R., Baker, C. S.   +10 more
openaire   +2 more sources

The Antillean manatee (Trichechus manatus manatus) along the Caribbean coast of Colombia: underused incidental records help identify present and past coastal‐lowland hotspots

, 2023
Marine Mammal Science, Volume 39, Issue 1, Page 322-337, January 2023.
Adolphe O. Debrot, Dalila Caicedo‐Herrera, Isabel Gómez‐Camelo, Yenyfer Moná‐Sanabria, Camila Rosso, Jan Tjalling van der Wal, Antonio A. Mignucci‐Giannoni   +6 more
wiley   +1 more source

ÁREAS PREFERENCIAIS DE PESCA E DIETA DO ECÓTIPO MARINHO DO BOTO-CINZA (Sotalia fluviatilis ) NA BAÍA DE SEPETIBA, RJ [PDF]

Floresta e Ambiente, 2023
RESUMO Os botos da baía de Sepetiba apresentam preferência por determinadas áreas para a pesca. Estas têm profundidade ≥10 m, sendo que durante o verão e o outono as áreas preferenciais são mais profundas do que durante o inverno e a primavera.
Sheila Marino Simão, Fabiana Rios Poletto   +1 more
doaj  

Heavy metals in kidney tissues of Franciscana dolphin, Pontoporia blainvillei (Cetacea: Pontoporiidae), and their relationship with biological parameters [PDF]

, 2011
En este estudio se determinó los niveles de metales pesados (Cd, Pb, Zn, Cu, Cr y Ni) en el tejido renal del delfín franciscana, Pontoporia blainvillei, y se estableció la influencia de los parámetros ecológicos y biológicos sobre la bioacumulación de ...
Botté, Sandra Elizabeth, Cappozzo, Humberto Luis, Marcovecchio, Jorge Eduardo, Negri, Maria Fernanda, Panebianco, María Victoria   +4 more
core   +1 more source

Guiana Dolphin (Sotalia guianensis) in the Maracaibo Lake System, Venezuela: conservation, threats, and population overview [PDF]

, 2021
The Guiana dolphin (Sotalia guianensis) home range is located among Central and South American countries, in coastal habitats in the Caribbean and Atlantic Ocean.
Barrios-Garrido, Hector, De Turris-Morales, Kareen, Espinoza-Rodriguez, Ninive Edilia   +2 more
core   +1 more source

The role of freshwater bioacoustics in ecological research

WIREs Water, Volume 7, Issue 3, May/June 2020., 2020
Fish are the focal study species in the majority of freshwater bioacoustic studies, which often focus on a single species that is recorded in laboratory aquaria. Despite their significant contributions to soundscape composition and ecosystem function, arthropods were poorly represented in the research literature.
Jack A. Greenhalgh, Martin J. Genner, Gareth Jones, Camille Desjonquères   +3 more
wiley   +1 more source