A Preliminary Comparison on Faecal Microbiomes of Free-Ranging Large Baleen (Balaenoptera musculus, B. physalus, B. borealis) and Toothed (Physeter macrocephalus) Whales.
Sign Up to like & getrecommendations! Published in 2021 at "Microbial ecology"
DOI: 10.1007/s00248-021-01729-4
Abstract: Large baleen and toothed whales play crucial ecological roles in oceans; nonetheless, very little is known about their intestinal microbiomes. Based on striking differences in natural history and thus in feeding behaviours, it can be… read more here.
Keywords: baleen; baleen toothed; toothed whales; free ranging ... See more keywords
Toothed whales use distinct vocal registers for echolocation and communication
Sign Up to like & getrecommendations! Published in 2023 at "Science"
DOI: 10.1126/science.adc9570
Abstract: Echolocating toothed whales (odontocetes) capture fast-moving prey in dark marine environments, which critically depends on their ability to generate powerful, ultrasonic clicks. How their supposedly air-driven sound source can produce biosonar clicks at depths of… read more here.
Keywords: toothed whales; vocal registers; communication; sound production ... See more keywords
Amyloid-beta peptide and phosphorylated tau in the frontopolar cerebral cortex and in the cerebellum of toothed whales: aging vs hypoxia.
Sign Up to like & getrecommendations! Published in 2020 at "Biology open"
DOI: 10.1242/bio.054734
Abstract: Hypoxia could be a possible risk factor for neurodegenerative alterations in cetaceans' brain. Among toothed whales, the beaked whales are particularly cryptic and routinely dive deeper than 1,000 m for about one hour in order… read more here.
Keywords: cortex; toothed whales; amyloid beta; peptide phosphorylated ... See more keywords
Amazon river dolphins (Inia geoffrensis) modify biosonar output level and directivity during prey interception in the wild
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Experimental Biology"
DOI: 10.1242/jeb.159913
Abstract: ABSTRACT Toothed whales have evolved to live in extremely different habitats and yet they all rely strongly on echolocation for finding and catching prey. Such biosonar-based foraging involves distinct phases of searching for, approaching and… read more here.
Keywords: prey; biosonar; toothed whales; amazon river ... See more keywords
Higher neuron densities in the cerebral cortex and larger cerebellums may limit dive times of delphinids compared to deep-diving toothed whales
Sign Up to like & getrecommendations! Published in 2019 at "PLoS ONE"
DOI: 10.1371/journal.pone.0226206
Abstract: Since the work of Tower in the 1950s, we have come to expect lower neuron density in the cerebral cortex of larger brains. We studied dolphin brains varying from 783 to 6215g. As expected, average… read more here.
Keywords: pygmy sperm; cerebral cortex; cortex larger; toothed whales ... See more keywords
Multi-Omics Approaches and Radiation on Lipid Metabolism in Toothed Whales
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DOI: 10.3390/life11040364
Abstract: Lipid synthesis pathways of toothed whales have evolved since their movement from the terrestrial to marine environment. The synthesis and function of these endogenous lipids and affecting factors are still little understood. In this review,… read more here.
Keywords: multi omics; toothed whales; omics approaches; lipid metabolism ... See more keywords
Toothed Whales Have Black Neurons in the Blue Spot
Sign Up to like & getrecommendations! Published in 2022 at "Veterinary Sciences"
DOI: 10.3390/vetsci9100525
Abstract: Simple Summary Neuromelanin is a dark pigment that is present in several types of neurons of the brain. The role of human neuromelanin is a matter of controversy and, over the past few years, has… read more here.
Keywords: toothed whales; family; locus ceruleus; brain ... See more keywords
Echolocating toothed whales use ultra-fast echo-kinetic responses to track evasive prey
Sign Up to like & getrecommendations! Published in 2021 at "eLife"
DOI: 10.7554/elife.68825
Abstract: Visual predators rely on fast-acting optokinetic responses to track and capture agile prey. Most toothed whales, however, rely on echolocation for hunting and have converged on biosonar clicking rates reaching 500/s during prey pursuits. If… read more here.
Keywords: toothed whales; responses track; echo kinetic; kinetic responses ... See more keywords