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Dataset results
16 results for “Delphinus”
A Study of Flexible-dose Brexpiprazole as Adjunctive Therapy in the Treatment of Adults With Major Depressive Disorder, the Delphinus Trial
ClinicalTrials.gov study NCT01727726. IPD Sharing: Not stated. Countries: 7. Publications: 2.
On following pages: 11. Long-beaked Common Dolphin (Delphinus capensis); 12. Fraser's Dolphin (Lagenodelphis hosel); 13. Tucuxi (Sotalia fluviatilis); 14. Guiana Dolphin (Sotalia guianensis); 15. Indo-Pacific Humpback Dolphin (Sousa chinensis); 16. Atlantic Humpback Dolphin (Sousa teuszii). in Delphinidae
On following pages: 11. Long-beaked Common Dolphin (Delphinus capensis); 12. Fraser's Dolphin (Lagenodelphis hosel); 13. Tucuxi (Sotalia fluviatilis); 14. Guiana Dolphin (Sotalia guianensis); 15. Indo-Pacific Humpback Dolphin (Sousa chinensis); 16. Atlantic Humpback Dolphin (Sousa teuszii).
FIGURES 61–66. Acylophorus delphinus Fauvel. 61–64 in Revision of the genus Acylophorus Nordmann, 1837 from Madagascar and Mascarene Islands (Coleoptera: Staphylinidae: Staphylininae: Acylophorina)
FIGURES 61–66. Acylophorus delphinus Fauvel. 61–64, Kirindy; 65, 66, Ampatika. 61, aedeagus lateral; 62, aedeagus ventral; 63, male tergites 9, 10; 64, male sternite 9; 65, female tergites 9, 10; 66, valves. 61, 62, transmitted light. 61–62, 65–66, same scale bars.
FIGURES 52–60. Acylophorus delphinus Fauvel. 52, 53, 56–60 in Revision of the genus Acylophorus Nordmann, 1837 from Madagascar and Mascarene Islands (Coleoptera: Staphylinidae: Staphylininae: Acylophorina)
FIGURES 52–60. Acylophorus delphinus Fauvel. 52, 53, 56–60, Kirindi; 54, 55, Ampatika. 60, holotype. 52, habitus; 53, head and pronotum; 54, mandibles; 55, maxillary palpus; 56, aedeagus lateral; 57, aedeagus ventro-lateral; 58–60, aedeagus ventral. 56–60, same scale bars.
Data from: Post-glacial habitat release and incipient speciation in the genus Delphinus
The role of ecological and changing environmental factors in the radiation of species diversity is a fundamental question in evolutionary biology. Of particular interest is the potential for these factors to determine the boundary between what we would consider differentiation among populations and incipient speciation. Dolphins in the genus Delphinus provide a useful test case, exhibiting morphological variation in beak length, coloration and body size across their wide geographic distribution, and in particular among coastal and more pelagic habitats. Two species have been proposed, D. delphis and D. capensis, but morphologically similar allopatric populations are not monophyletic, indicating that the mostly coastal 'long-beaked' D. capensis form is not a single globally distributed species. However, the sympatric populations in the Eastern North Pacific currently designated as these two species are both morphologically and genetically differentiated. Here we use microsatellite DNA and mitochondrial DNA markers to investigate the evolutionary mechanisms that led to this incipient speciation event. We used coalescent and assignment methods to investigate the timing and extent of reproductive isolation. Our data indicate that although there is some level of on-going gene flow, the putative species found in the Eastern North Pacific are reciprocally monophyletic. The timing of isolation appears to be associated with regional changes in paleoceanographic conditions within the Holocene timeframe.
Delphinus SoftVue Prospective Case Collection - ARM 1
ClinicalTrials.gov study NCT03257839. IPD Sharing: UNDECIDED. Countries: 1. Publications: 50.
Delphinus SoftVue Prospective Case Collection - ARM 2
ClinicalTrials.gov study NCT02977247. IPD Sharing: NO. Countries: 1. Publications: 50.
Data from: Atypical residency of short-beaked common dolphins (Delphinus delphis) to a shallow, urbanized embayment in south-eastern Australia
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Data from: Post-glacial habitat release and incipient speciation in the genus Delphinus
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Data from: Influences of past climatic changes on historical population structure and demography of a cosmopolitan marine predator, the common dolphin (genus Delphinus)
Climatic oscillations during the Pleistocene have greatly influenced the distribution and connectivity of many organisms, leading to extinctions but also generating biodiversity. While the effects of such changes have been extensively studied in the terrestrial environment, studies focusing on the marine realm are still scarce. Here we used sequence data from one mitochondrial and five nuclear loci to assess the potential influence of Pleistocene climatic changes on the phylogeography and demographic history of a cosmopolitan marine predator, the common dolphin (genus Delphinus). Population samples representing the three major morphotypes of Delphinus were obtained from ten oceanic regions. Our results suggest that short-beaked common dolphins are likely to have originated in the eastern Indo-Pacific Ocean during the Pleistocene and expanded into the Atlantic Ocean through the Indian Ocean. On the other hand, long-beaked common dolphins appear to have evolved more recently and independently in several oceans. Our results also suggest that short-beaked common dolphins had recurrent demographic expansions concomitant with changes in sea surface temperature during the Pleistocene and its associated increases in resource availability, which differed between the North Atlantic and Pacific Ocean basins. By proposing how past environmental changes had an effect on the demography and speciation of a widely distributed marine mammal, we highlight the impacts that climate change may have on the distribution and abundance of marine predators and its ecological consequences for marine ecosystems.
Data from: Atypical panmixia in a European dolphin species (Delphinus delphis); implications for the evolution of diversity across oceanic boundaries.
Despite the scarcity of geographical barriers in the ocean environment, delphinid cetaceans often exhibit marked patterns of population structure on a regional scale. The European coastline is a prime example, with species exhibiting population structure across well defined environmental boundaries. Here we undertake a comprehensive population genetic study on the European common dolphin (Delphinus delphis, based on 492 samples and 15 loci) and establish that this species shows exceptional panmixia across most of the study range. We found differentiation only between the eastern and western Mediterranean, consistent with earlier studies, and here use Approximate Bayesian Computations to explore different scenarios to explain the observed pattern. Our results suggest that a recent population bottleneck likely contributed significantly to the differentiation of the Eastern Mediterranean population (in Greek waters). This interpretation is consistent with independent census data which suggests a sharp population decline in the recent past. The implication is that an unperturbed population may currently show panmixia across the full study range. This exception to the more typical pattern of population structure seen for other regional dolphin species (and for common dolphin populations elsewhere in the world) suggests particular ecological or life history traits distinct to this species in European waters.
Data from: Atypical panmixia in a European dolphin species (Delphinus delphis); implications for the evolution of diversity across oceanic boundaries.
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Data from: Influences of past climatic changes on historical population structure and demography of a cosmopolitan marine predator, the common dolphin (genus Delphinus)
Open the record for dataset details and reuse information.
Delphinus SoftVue™ ROC Reader Study
ClinicalTrials.gov study NCT03972605. IPD Sharing: NO. Countries: 1. Publications: 0.
Delphinus SoftVue™ ROC Reader Study (DMT SV RRS3)
ClinicalTrials.gov study NCT04260620. IPD Sharing: NO. Countries: 1. Publications: 0.
Delphinus SoftVue™ ROC Reader Study
ClinicalTrials.gov study NCT03698942. IPD Sharing: NO. Countries: 1. Publications: 0.
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