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67 results for “Tursiops”
Figure 3. 3D in Cranial variation between coastal and offshore boưlenose dolphins, Tursiops truncatus (Cetacea: Delphinidae) in Ecuador and the Mediterranean: a three-dimensional geometric morphometric study
Figure 3. 3D LMs points generated from the automatic landmarking from the boưlenose dolphin skull reference template.
Figure 2 in Cranial variation between coastal and offshore boưlenose dolphins, Tursiops truncatus (Cetacea: Delphinidae) in Ecuador and the Mediterranean: a three-dimensional geometric morphometric study
Figure 2. Three-dimensional landmarks used in this study, showed in dorsal (A), ventral (B), lateral (C), and occipital (D) aspects of the boưlenose dolphin skull.
Figure 6 in Cranial variation between coastal and offshore boưlenose dolphins, Tursiops truncatus (Cetacea: Delphinidae) in Ecuador and the Mediterranean: a three-dimensional geometric morphometric study
Figure 6. Ward's clustering analysis based on the first 55 PCs of principal component analysis (PCA) Euclidean distances: A, automatic landmarking; B, manual landmarking. Location shown indicates the origin of the majority of specimens within each cluster.
Figure 1 in Cranial variation between coastal and offshore boưlenose dolphins, Tursiops truncatus (Cetacea: Delphinidae) in Ecuador and the Mediterranean: a three-dimensional geometric morphometric study
Figure 1. Map showing sample number of common boưlenose dolphin individuals per location. Offshore populations in dark red, coastal populations from Guayaquil (Ecuador) in purple, coastal populations from the Mediterranean Sea in orange.
Data from: A worldwide perspective on the population structure and genetic diversity of bottlenose dolphins (Tursiops truncatus) in New Zealand
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Data from: Developing genomic resources for the common bottlenose dolphin (Tursiops truncatus): isolation and characterisation of 153 single nucleotide polymorphisms and 53 genotyping assays
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Data from: Behavioural laterality in foraging bottlenose dolphins (Tursiops truncatus)
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Data from: The importance of delineating networks by activity type in bottlenose dolphins (Tursiops truncatus) in Cedar Key, Florida
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Data from: Genome-wide investigation of adaptation to harmful algal blooms in common bottlenose dolphins (Tursiops truncatus)
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Data from: Habitat-driven population structure of bottlenose dolphins, Tursiops truncatus, in the North-East Atlantic
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Data from: Common bottlenose dolphin (Tursiops truncatus) behavior in an active narrow seaport
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Data from: Genetic isolation between coastal and fishery-impacted, offshore bottlenose dolphin (Tursiops spp.) populations
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Passive electroreception in bottlenose dolphins Tursiops truncatus: implication for micro- and large-scale orientation
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Description and classification of echolocation clicks of Indian Ocean humpback (Sousa plumbea) and Indo-Pacific bottlenose (Tursiops aduncus) dolphins from Menai Bay, Zanzibar, East Africa
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Data from: "Hot deals at sea": responses of a top predator (Bottlenose dolphin, Tursiops truncatus) to human-induced changes in the coastal ecosystem
The main response of top predators to human-induced environmental changes is often behavioural. Although human activities regularly impose a disturbance on top predators, they can also be a source of reliable and concentrated food resources for species with a high degree of behavioural plasticity. This study represents the first assessment of the influence of these resources on migratory patterns and social interaction of a marine top predator, the common bottlenose dolphin, Tursiops truncatus. Pollock's closed robust design models and association analyses were applied to data collected over nine consecutive years of research in a coastal area subject to significant use and pressure by humans. Photo-identification data were collected year-round during 955 boat-based surveys, resulting in 1 638 common bottlenose dolphin group encounters. Results of this study revealed a significant upward trend in density of bottlenose dolphins, preferences for a coastal area with higher human pressure, and a reduction of the social interactions associated to a temporal switch to the food sources provided by human activities. The observed link between human activities and changes in common bottlenose dolphin behaviour aim to contribute to a better understanding of the ecology of a marine top predator and provide some of the needed baseline data, from which effective management and conservation strategies can be designed.
Fig. 2 in New Prey Fishes In Diet Of Black Sea Bottlenose Dolphins, Tursiops Truncatus (Mammalia, Cetacea)
Fig. 2. Size distribution of prey fishes in diet of Black Sea bottlenose dolphins Tursiops truncatus in 1933–1955 and 2013, weight categories vs number of recorded species in each category.
Data from: Can the camera lie? A nonpermanent nick in a bottlenose dolphin (Tursiops truncatus)
[No abstract entered]
South African Tursiops aduncus ddRAD genepop file
<p>Many marine species exhibit fine-scale population structure despite high mobility and a lack of physical barriers to dispersal, but the evolutionary drivers of differentiation in these systems are generally poorly understood. Here we investigate the potential role of habitat transitions and seasonal prey distributions on the evolution of population structure in the Indo-Pacific bottlenose dolphin, <i>Tursiops aduncus</i>, off South Africa's coast, using double-digest Restriction-site Associated DNA sequencing (ddRADseq). Population structure was identified between the eastern and southern coasts and correlated with the habitat transition between the temperate Agulhas (southern) and subtropical Natal (eastern) Bioregions, suggesting differentiation driven by resource specialisations. Differentiation along the Natal coast was comparatively weak, but evident in some analyses and varied depending on whether the samples were collected during or outside the seasonal sardine (<i>Sardinops sagax</i>) run. This local abundance of prey could influence the ranging patterns and apparent genetic structure of <i>T. aduncus.</i> These findings have significant and transferable management implications, most importantly in terms of differentiating populations inhabiting distinct Bioregions and seasonal structural patterns within a region associated with the movement of prey resources.</p>
South African Tursiops aduncus ddRAD genepop file
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Data from: “Hot deals at sea”: responses of a top predator (Bottlenose dolphin, Tursiops truncatus) to human-induced changes in the coastal ecosystem
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International Brain Laboratory public data
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OpenNeuro
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