Results 61 to 70 of about 100,547 (346)

Cetacean mother-calf behavior observed from a small aircraft off Southern California. Animal Behavior and Cognition

open access: yesAnimal Behavior and Cognition, 2017
During early developmental stages, cetacean calves are dependent on their mothers for survival. Protection of young whales engaged in behaviors that are biologically important is critical for population recovery, so that appropriate management actions ...
Mari A. Smultea   +5 more
doaj   +1 more source

Whole-genome sequencing of the blue whale and other rorquals finds signatures for introgressive gene flow

open access: yesScience Advances, 2018
Network-like evolution suggests sympatric speciation of baleen whales. Reconstructing the evolution of baleen whales (Mysticeti) has been problematic because morphological and genetic analyses have produced different scenarios.
Ú. Árnason   +4 more
semanticscholar   +1 more source

A contribution to the anatomy of two rare cetacean species: The hourglass dolphin (Cephalorhynchus cruciger) and the spectacled porpoise (Phocoena dioptrica)

open access: yesThe Anatomical Record, EarlyView.
Abstract The anatomical description of the hourglass dolphin (Cephalorhynchus cruciger) and the spectacled porpoise (Phocoena dioptrica) remains largely unexplored, due to limited specimen availability and preservation challenges. This study employed digital imaging techniques, conventional histology, and computed tomography to provide visualization of
Jean‐Marie Graïc   +26 more
wiley   +1 more source

Virological Sampling of Inaccessible Wildlife with Drones

open access: yesViruses, 2018
There is growing interest in characterizing the viromes of diverse mammalian species, particularly in the context of disease emergence. However, little is known about virome diversity in aquatic mammals, in part due to difficulties in sampling.
Jemma L. Geoghegan   +8 more
doaj   +1 more source

Whale optimization algorithm for optimal sizing of renewable resources for loss reduction in distribution systems

open access: yes, 2017
Distributed generator (DG) resources are small scale electric power generating plants that can provide power to homes, businesses or industrial facilities in distribution systems.
Dr. Dinakara Prasad Reddy P   +2 more
semanticscholar   +1 more source

Broadening the semiaquatic scene: Quantification of long bone microanatomy across pinnipeds

open access: yesThe Anatomical Record, EarlyView.
Abstract Investigations of bone microanatomy are commonly used to explore lifestyle strategies in vertebrates. While distinct microanatomical limb bone features have been established for exclusively aquatic and terrestrial lifestyles, identifying clear patterns for the semiaquatic lifestyle remains more challenging.
Apolline Alfsen   +10 more
wiley   +1 more source

Four decades of annual monitoring reveal declining reproductive success of a migratory baleen whale

open access: yesScientific Reports
Understanding and mitigating threats to species survival relies on the ability to track key demographic processes over time. Among these processes, reproduction stands out as a primary biological driver of population growth and resilience.
Els Vermeulen   +3 more
doaj   +1 more source

Drone Up! Quantifying Whale Behavior From a New Perspective Improves Observational Capacity

open access: yesFrontiers in Marine Science, 2018
From our traditional boat-based horizontal perspective, marine megafauna behavioral observations are typically limited to animal surfacings. Achieving an aerial perspective has been restricted to brief helicopter or airplane based observations that are ...
L. Torres   +3 more
semanticscholar   +1 more source

Morphological variation in atlas and axis of Neotropical spiny rats (Rodentia, Echimyidae)

open access: yesThe Anatomical Record, EarlyView.
Abstract The unique morphologies of the first two cervical vertebrae, the atlas and axis, represent a significant innovation in mammalian evolution. These structures support the weight of the head and enable intricate movements of the head and neck.
Thomas Furtado da Silva Netto   +3 more
wiley   +1 more source

Timing is everything: Drivers of interannual variability in blue whale migration

open access: yesScientific Reports, 2019
Blue whales need to time their migration from their breeding grounds to their feeding grounds to avoid missing peak prey abundances, but the cues they use for this are unknown.
Angela R. Szesciorka   +6 more
semanticscholar   +1 more source

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