How do Mysticete (Baleen) Whales Make Two Sounds Simultaneously?
نویسندگان
چکیده
منابع مشابه
Morphological and molecular evidence for a stepwise evolutionary transition from teeth to baleen in mysticete whales.
The origin of baleen in mysticete whales represents a major transition in the phylogenetic history of Cetacea. This key specialization, a keratinous sieve that enables filter-feeding, permitted exploitation of a new ecological niche and heralded the evolution of modern baleen-bearing whales, the largest animals on Earth. To date, all formally described mysticete fossils conform to two types: to...
متن کاملA bizarre new toothed mysticete (Cetacea) from Australia and the early evolution of baleen whales.
Extant baleen whales (Cetacea, Mysticeti) are all large filter-feeding marine mammals that lack teeth as adults, instead possessing baleen, and feed on small marine animals in bulk. The early evolution of these superlative mammals, and their unique feeding method, has hitherto remained enigmatic. Here, I report a new toothed mysticete from the Late Oligocene of Australia that is more archaic th...
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Understanding the scenarios whereby fishing gear entanglement of large whales induces mortality is important for the development of mitigation strategies. Here we present a series of 21 cases involving 4 species of baleen whales in the NW Atlantic, describing the available sighting history, necropsy observations, and subsequent data analyses that enabled the compilation of the manners in which ...
متن کاملMitochondrial phylogenetics and evolution of mysticete whales.
The phylogenetic relationships among baleen whales (Order: Cetacea) remain uncertain despite extensive research in cetacean molecular phylogenetics and a potential morphological sample size of over 2 million animals harvested. Questions remain regarding the number of species and the monophyly of genera, as well as higher order relationships. Here, we approach mysticete phylogeny with complete m...
متن کاملFlow-dependent porosity and other biomechanical properties of mysticete baleen.
Despite its vital function in a highly dynamic environment, baleen is typically assumed to be a static material. Its biomechanical and material properties have not previously been explored. Thus I tested sections of baleen from bowhead whales, Balaena mysticetus, and humpback whales, Megaptera novaeangliae, alone or in groups representing miniature 'racks', in a flow tank through which water an...
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ژورنال
عنوان ژورنال: The FASEB Journal
سال: 2019
ISSN: 0892-6638,1530-6860
DOI: 10.1096/fasebj.2019.33.1_supplement.613.11