Captive-born intergeneric hybrid of a Guiana and bottlenose dolphin: Sotalia guianensis×Tursiops truncatus

Caballero, Susana; Baker, C. Scott

doi:10.1002/zoo.20299

Cited by 19 publications

(13 citation statements)

References 37 publications

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“…However, they could not resolve with confidence the sister-taxa relationship between Sotalia and Sousa, which was supported only in some analyses. Caballero and Baker (2009) used mtDNA markers and nuclear autosomal introns to document the only known hybridization event between a male S. guianensis and a female bottlenose dolphin Tursiops truncatus, in captivity at Oceanario Islas del Rosario (Colombia). As expected, the mtDNA haplotype of the hybrid corresponded to the maternal species, T. truncatus.…”

Section: Medranomentioning

confidence: 99%

Conservation genetics of South American aquatic mammals: an overview of gene diversity, population structure, phylogeography, non‐invasive methods and forensics

Oliveira¹,

Castro²,

Cárdenas‐Alayza³

et al. 2011

Mammal Review

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Most aquatic mammals have high dispersal potential, and there are often severe conservation concerns related to their legal or illegal harvesting. Therefore, economic, social and forensic factors often arise in decisions relating to their population management. Molecular markers are essential tools in modern conservation genetics, revealing previously unknown aspects of aquatic mammal behaviour, natural history, population structure and demography. Molecular markers also have been used to define management units, to recognize taxonomic units, to conduct forensic analyses and to control illegal wildlife trade, providing valuable information for decision‐making in wildlife conservation and management. We review studies published in peer‐reviewed journals between 1993 and 2010, in which genetic approaches have been applied to conservation‐related issues involving natural populations of 25 species of aquatic mammals in South America. These studies cover just 34% of the 70 aquatic mammal species recorded in South America. Most of the studies are related to population structure, phylogeography, gene flow and dispersal movements. In addition, recent findings relate to evolutionarily significant units, management units, forensics and conservation policy. Finally, we look to the future and, based on numbers of studies and conservation concerns, suggest which species, geographic areas and genetic studies should be prioritized. Moreover, we discuss constraints on research and suggest collaborative works that would provide critical information towards the effective conservation and management of aquatic mammals in South America.

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Section: Medranomentioning

confidence: 99%

Conservation genetics of South American aquatic mammals: an overview of gene diversity, population structure, phylogeography, non‐invasive methods and forensics

Oliveira¹,

Castro²,

Cárdenas‐Alayza³

et al. 2011

Mammal Review

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“…Although blue and fin whales are as genetically distant as gorillas and humans 30 , they are known to interbreed and produce hybrid individuals 31 , which could explain the observed high level of heterozygosity in the fin whale. Similarly, bottlenose dolphins are known to hybridize with other dolphins 32,33,34 . We also inferred a marked population bottleneck in the demographic history of the whale using the pairwise sequentially Markovian coalescent (PSMC) model 35 (Fig.…”

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confidence: 99%

Minke whale genome and aquatic adaptation in cetaceans

et al. 2013

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The shift from terrestrial to aquatic life by whales was a substantial evolutionary event. Here we report the whole-genome sequencing and de novo assembly of the minke whale genome, as well as the whole-genome sequences of three minke whales, a fin whale, a bottlenose dolphin and a finless porpoise. Our comparative genomic analysis identified an expansion in the whale lineage of gene families associated with stress-responsive proteins and anaerobic metabolism, whereas gene families related to body hair and sensory receptors were contracted. Our analysis also identified whale-specific mutations in genes encoding antioxidants and enzymes controlling blood pressure and salt concentration. Overall the whale-genome sequences exhibited distinct features that are associated with the physiological and morphological changes needed for life in an aquatic environment, marked by resistance to physiological stresses caused by a lack of oxygen, increased amounts of reactive oxygen species and high salt levels.

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“…) would allow a relatively straightforward confirmation. Moreover, molecular analyses could provide further insights on the status of Cephalorhynchus dolphins with an intermediate coloration pattern using paternal and maternal markers (Caballero and Baker ).…”

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confidence: 99%