A5045494670- Marine animal studies overview
- Identification and Quantification in Food
- Genomics and Phylogenetic Studies
- Ichthyology and Marine Biology
- Bat Biology and Ecology Studies
- Underwater Acoustics Research
- Evolution and Paleontology Studies
- Animal Vocal Communication and Behavior
- Cephalopods and Marine Biology
- Genetic diversity and population structure
- Marine and coastal plant biology
- dental development and anomalies
- Reproductive System and Pregnancy
- Paleontology and Evolutionary Biology
- Primate Behavior and Ecology
- RNA Research and Splicing
- Arctic and Antarctic ice dynamics
- Biochemical Analysis and Sensing Techniques
- Pregnancy and preeclampsia studies
- Aquaculture disease management and microbiota
- Bioinformatics and Genomic Networks
- Genomics and Chromatin Dynamics
- Wildlife Ecology and Conservation
- Cancer-related molecular mechanisms research
- Mitochondrial Function and Pathology
National Museum of Natural History
2019-2025
Smithsonian Institution
2020-2023
Queen Mary University of London
2015-2020
Natural History Museum Aarhus
2016
University of Copenhagen
2016
University of California, San Diego
2016
University of Bern
2016
University of Maine
2016
University of St Andrews
2016
University of Idaho
2016
Abstract The evolution of cetaceans, from their early transition to an aquatic lifestyle subsequent diversification, has been the subject numerous studies. However, although higher-level relationships among cetacean families have largely settled, several aspects systematics within these groups remain unresolved. Problematic clades include oceanic dolphins (37 spp.), which experienced a recent rapid radiation, and beaked whales (22 not investigated in detail using nuclear loci. combined...
The origin of baleen in mysticete whales represents a major transition the phylogenetic history Cetacea. This key specialization, keratinous sieve that enables filter-feeding, permitted exploitation new ecological niche and heralded evolution modern baleen-bearing whales, largest animals on Earth. To date, all formally described fossils conform to two types: toothed species from Oligocene-age rocks (∼ 24 34 million years old) toothless presumably utilized feed (Recent ∼ 30 old). Here, we...
Cetacea (dolphins, porpoises, and whales) is a clade of aquatic species that includes the most massive, deepest diving, largest brained mammals. Understanding temporal pattern diversification in group as well evolution cetacean anatomy behavior requires robust well-resolved phylogenetic hypothesis. Although large body molecular data has accumulated over past 20 years, DNA sequences cetaceans have not been directly integrated with rich, fossil record to reconcile discrepancies among...
There is a well-established allometric relationship between brain and body mass in mammals. Deviation of relatively increased size from this pattern appears to coincide with enhanced cognitive abilities. To examine whether there phylogenetic structure such episodes changes encephalization across mammals, we used techniques analyse mass, quotient (EQ) among 630 extant mammalian species. Among all anthropoid primates odontocete cetaceans have significantly greater variance EQ, suggesting that...
The flora of Macaronesia, which encompasses five Atlantic archipelagos (Azores, Canaries, Madeira, Cape Verde, and Salvage), is exceptionally rich diverse. Spectacular radiation numerous endemic plant groups has made the Macaronesian islands an outstanding area for studies evolution speciation. Despite intensive investigation in last 15 years, absolute age rate diversification are poorly known Macaronesia. Here we report molecular divergence estimates rates representative, putative rapid...
Various nucleotide substitution models have been developed to accommodate among lineage rate heterogeneity, thereby relaxing the assumptions of strict molecular clock. Recently "uncorrelated relaxed clock" and "random local (RLC) allow decoupling rates between descendant lineages are thus predicted perform better in presence lineage-specific heterogeneity. However, it is uncertain how these punctuated shifts rate, especially closely related clades. Using cetaceans (whales dolphins) as a case...
Cetaceans rival primates in brain size relative to body and include species with the largest brains biggest bodies have ever evolved. are remarkably diverse, varying both phenotypes by several orders of magnitude, notable differences between two extant suborders, Mysticeti Odontoceti. We analyzed evolutionary history mass, measured encephalization quotient (EQ), using a data set extinct taxa capture temporal variation mode direction evolution. Our results suggest that cetacean mass evolved...
The deep sea has been described as the last major ecological frontier, much of its biodiversity is yet to be discovered and described. Beaked whales (ziphiids) are among most visible inhabitants sea, due their large size worldwide distribution, taxonomic diversity about natural history remain poorly understood. We combine genomic morphometric analyses reveal a new Southern Hemisphere ziphiid species, Ramari's beaked whale, Mesoplodon eueu , whose name linked Indigenous peoples lands from...
Cetaceans (dolphins and whales) have undergone a radical transformation from the original mammalian bodyplan. In addition, some cetaceans evolved large brains complex cognitive capacities. We compared approximately 10 000 protein-coding genes culled bottlenose dolphin genome with nine other genomes to reveal molecular correlates of remarkable phenotypic features these aquatic mammals. Evolutionary analyses demonstrated that overall synonymous substitution rate in dolphins has slowed studied...
Phylogeographic inference has provided extensive insight into the relative roles of geographical isolation and ecological processes during evolutionary radiations. However, importance cross-lineage admixture in facilitating adaptive radiations is increasingly being recognised, suggested as a main cause phylogenetic uncertainty. In this study, we used double digest RADseq protocol to provide high resolution (~4 Million bp) nuclear phylogeny Delphininae. Phylogenetic group been especially...
The macroevolutionary transition of whales (cetaceans) from a terrestrial quadruped to an obligate aquatic form involved major changes in sensory abilities. Compared mammals, the olfactory system baleen is dramatically reduced, and toothed completely absent. We sampled receptor (OR) subgenomes eight cetacean species four families. A multigene tree 115 newly characterized OR sequences these published data for Bos taurus revealed diverse array class II paralogues Cetacea. Evolution gene...
The dolphin genus Lagenorhynchus has included six species of dolphins characterized by short, wide rostra. Genetic analyses have consistently found the to be polyphyletic with four being in subfamily Lissodelphininae. A recent paper synthesized available molecular, morphological and acoustic evidence support a taxonomic revision genus, assigning L. obliquidens, obscurus, australis cruciger Sagmatias within Lissodelphiniae. Here, we add new phylogenomic data previously analyzed dataset...
Common dolphins in the eastern Pacific are currently recognized as separate subspecies, a long-beaked form (Delphinus delphis bairdii) and short-beaked delphis), which sympatric across portions of their ranges waters off California. While taxonomic status these forms is still unclear, several studies have shown that they represent different evolutionary trajectories. Most this work has been conducted on common Eastern North Pacific. In study, phylogenetic relationship two was examined,...
The transition to an aquatic lifestyle in cetaceans (whales and dolphins) resulted a radical transformation their sensory systems. Toothed whales acquired specialized high-frequency hearing tied the evolution of echolocation, whereas baleen evolved low-frequency hearing. More generally, all show adaptations for seeing underwater. To determine extent which these phenotypic changes have been driven by molecular adaptation, we performed large-scale targeted sequence capture 179 genes across...
The diversity of the dolphin family was established during a short window time. We investigated delphinid skull shape evolution, mapping shapes on an up-to-date nuclear phylogeny. In this model, common ancestor similar to Lagenorhynchus albirostris. Initial diversification occurred in three directions: toward specialized raptorial feeders small prey with longer, narrower beaks, e.g., Delphinus; wider skulls downward-oriented rostra and reduced temporal fossae, exemplified by suction feeders,...