Results 31 to 40 of about 14,227 (275)

Sistematización del conocimiento etnobiológico kichwa para el monitoreo del delfín rosado Inia geoffrensis (Cetartiodactyla: Iniidae) al sur del Parque Nacional Yasuní, Ecuador

Mammalogy Notes, 2023
En la Amazonía ecuatoriana, la contaminación, el aumento del tráfico fluvial y las capturas afectan a las poblaciones de delfines rosados. La mayoría de estudios de esta especie proceden del nororiente del país, mientras que se desconoce su situación ...
Ivan Jácome-Negrete, Lida Guarderas Flores   +1 more
doaj   +1 more source

A new archaic baleen whale Toipahautea waitaki (early Late Oligocene, New Zealand) and the origins of crown Mysticeti [PDF]

Royal Society Open Science, 2018
A new genus and species of extinct baleen whale †Toipahautea waitaki (Late Oligocene, New Zealand) is based on a skull and associated bones, from the lower Kokoamu Greensand, about 27.5 Ma (local upper Whaingaroan Stage, early Chattian).
Cheng-Hsiu Tsai, R. Ewan Fordyce
doaj   +1 more source

Genetic Mechanisms Underlying Cortical Evolution in Mammals

Frontiers in Cell and Developmental Biology, 2021
The remarkable sensory, motor, and cognitive abilities of mammals mainly depend on the neocortex. Thus, the emergence of the six-layered neocortex in reptilian ancestors of mammals constitutes a fundamental evolutionary landmark.
Lucía Florencia Franchini
doaj   +1 more source

Losing Genes: The Evolutionary Remodeling of Cetacea Skin

Frontiers in Marine Science, 2020
The skin is a multi-layered organ, often displaying associated structures, that establishes a protective interface between the organism and the surrounding environment.
G. Espregueira Themudo, Luís Q. Alves, A. Machado, M. Lopes-Marques, R. D. da Fonseca, M. Fonseca, R. Ruivo, L. Castro   +7 more
semanticscholar   +1 more source

Sexual selection of protamine 1 in mammals [PDF]

, 2015
Protamines have a crucial role in male fertility. They are involved in sperm chromatin packaging and influence the shape of the sperm head and, hence, are important for sperm performance.
Lüke, Lena, Roldán, Eduardo R. S., Tourmente, Maximiliano   +2 more
core   +1 more source

Rod monochromacy and the coevolution of cetacean retinal opsins. [PDF]

PLoS Genetics, 2013
Cetaceans have a long history of commitment to a fully aquatic lifestyle that extends back to the Eocene. Extant species have evolved a spectacular array of adaptations in conjunction with their deployment into a diverse array of aquatic habitats ...
Robert W Meredith, John Gatesy, Christopher A Emerling, Vincent M York, Mark S Springer   +4 more
doaj   +1 more source

Relationships of Cetacea (Artiodactyla) among mammals: increased taxon sampling alters interpretations of key fossils and character evolution.

PLoS ONE, 2009
BackgroundIntegration of diverse data (molecules, fossils) provides the most robust test of the phylogeny of cetaceans. Positioning key fossils is critical for reconstructing the character change from life on land to life in the water.Methodology ...
Michelle Spaulding, Maureen A O'Leary, John Gatesy   +2 more
doaj   +1 more source

Population parameters and heterogeneity in survival rates of Indo-Pacific humpback dolphins in a heavily urbanized coastal region of southeast China: implications for conservation

Frontiers in Marine Science
The Pearl River Delta (PRD) region on the southeast coast of China is among the largest and most populated metropolitan regions of the world, subjecting the Indo-Pacific humpback dolphins (Sousa chinensis) inhabiting coastal waters of this region ...
Wenzhi Lin, Wenzhi Lin, Wenzhi Lin, Wenzhi Lin, Leszek Karczmarski, Leszek Karczmarski, Stephen C. Y. Chan, Stephen C. Y. Chan, Ruiqiang Zheng, Ruiqiang Zheng, Yuen-Wa Ho, Yuen-Wa Ho, Yaqian Mo, Yaqian Mo   +13 more
doaj   +1 more source

Complete Inactivation of Sebum-Producing Genes Parallels the Loss of Sebaceous Glands in Cetacea

Molecular biology and evolution, 2019
Genomes are dynamic biological units, with processes of gene duplication and loss triggering evolutionary novelty. The mammalian skin provides a remarkable case study on the occurrence of adaptive morphological innovations.
M. Lopes-Marques, A. Machado, Luís Q. Alves, M. Fonseca, Susana Barbosa, Mikkel-Holger S. Sinding, M. Rasmussen, Maria Refsgaard Iversen, Mads Frost Bertelsen, P. F. Campos, R. D. da Fonseca, R. Ruivo, L. F. C. Castro   +12 more
semanticscholar   +1 more source

A new physeteroid from the late Miocene of Peru expands the diversity of extinct dwarf and pygmy sperm whales (Cetacea: Odontoceti: Kogiidae)

, 2020
Nowadays, the odontocete family Kogiidae is monotypic and only includes two species of diminutive relatives of the great sperm whale Physeter Linnaeus, 1758.
A. Collareta, O. Lambert, C. Muizon, Aldo Marcelo Benites Palomino, M. Urbina, G. Bianucci   +5 more
semanticscholar   +1 more source