Gray, H. W. I.,Nishida, S.,Welch, A. J.,Moura, A. E.,Tanabe, S.,Kiani, M. S.,Culloch, R.,Möller, L.,Natoli, A.,Ponnampalam, L. S.,Minton, G.,Gore, M.,Collins, T.,Willson, A.,Baldwin, R.,Hoelzel, A. R.
Cryptic Lineage Differentiation Among Indo-Pacific Bottlenose Dolphins (Tursiops aduncus) in the Northwest Indian Ocean Journal Article
In: Molecular Phylogenetics and Evolution, no. 381, 2017, ISBN: 1055-7903.
Abstract | Links | BibTeX | Tags: bottlenose dolphin, conservation, Indian Ocean, Phylogeography, Pleistocene, taxonomy, tursiops aduncus
@article{,
title = {Cryptic Lineage Differentiation Among Indo-Pacific Bottlenose Dolphins (Tursiops aduncus) in the Northwest Indian Ocean},
author = {Gray, H. W. I.,Nishida, S.,Welch, A. J.,Moura, A. E.,Tanabe, S.,Kiani, M. S.,Culloch, R.,Möller, L.,Natoli, A.,Ponnampalam, L. S.,Minton, G.,Gore, M.,Collins, T.,Willson, A.,Baldwin, R.,Hoelzel, A. R.},
url = {https://www.sciencedirect.com/science/article/pii/S1055790317300635},
issn = {1055-7903},
year = {2017},
date = {2017-01-01},
journal = {Molecular Phylogenetics and Evolution},
number = {381},
abstract = {Phylogeography can provide insight into the potential for speciation and identify geographic regions and evolutionary processes associated with species richness and evolutionary endemism. In the marine environment, highly mobile species sometimes show structured patterns of diversity, but the processes isolating populations and promoting differentiation are often unclear. The Delphinidae (oceanic dolphins) are a striking case in point and, in particular, bottlenose dolphins (Tursiops spp.). Understanding the radiation of species in this genus is likely to provide broader inference about the processes that determine patterns of biogeography and speciation, because both fine-scale structure over a range of kilometers and relative panmixia over an oceanic range are known for Tursiops populations. In our study, novel Tursiops spp. sequences from the northwest Indian Ocean (including mitogenomes and two nuDNA loci) are included in a worldwide Tursiops spp. phylogeographic analysis. We discover a new ‘aduncus’ type lineage in the Arabian Sea (off India, Pakistan and Oman) that diverged from the Australasian lineage },
keywords = {bottlenose dolphin, conservation, Indian Ocean, Phylogeography, Pleistocene, taxonomy, tursiops aduncus},
pubstate = {published},
tppubtype = {article}
}
Phylogeography can provide insight into the potential for speciation and identify geographic regions and evolutionary processes associated with species richness and evolutionary endemism. In the marine environment, highly mobile species sometimes show structured patterns of diversity, but the processes isolating populations and promoting differentiation are often unclear. The Delphinidae (oceanic dolphins) are a striking case in point and, in particular, bottlenose dolphins (Tursiops spp.). Understanding the radiation of species in this genus is likely to provide broader inference about the processes that determine patterns of biogeography and speciation, because both fine-scale structure over a range of kilometers and relative panmixia over an oceanic range are known for Tursiops populations. In our study, novel Tursiops spp. sequences from the northwest Indian Ocean (including mitogenomes and two nuDNA loci) are included in a worldwide Tursiops spp. phylogeographic analysis. We discover a new ‘aduncus’ type lineage in the Arabian Sea (off India, Pakistan and Oman) that diverged from the Australasian lineage
Kershaw, Francine,Leslie, Matthew S,Collins, Tim,Mansur, Rubaiyat M,Smith, Brian D,Minton, Gianna,Baldwin, Robert,LeDuc, Richard G,Anderson, R Charles,Brownell, Robert L
Population differentiation of 2 forms of Bryde’s Whales in the Indian and Pacific Oceans Journal Article
In: Journal of Heredity, vol. 104, no. 394, pp. 755-764, 2013, ISBN: 0022-1503.
Abstract | BibTeX | Tags: balaenoptera, balaenoptera edeni, bangladesh, Bryde's whale, Maldives, Oman, Speciation, taxonomy
@article{,
title = {Population differentiation of 2 forms of Bryde’s Whales in the Indian and Pacific Oceans},
author = {Kershaw, Francine,Leslie, Matthew S,Collins, Tim,Mansur, Rubaiyat M,Smith, Brian D,Minton, Gianna,Baldwin, Robert,LeDuc, Richard G,Anderson, R Charles,Brownell, Robert L},
issn = {0022-1503},
year = {2013},
date = {2013-01-01},
journal = {Journal of Heredity},
volume = {104},
number = {394},
pages = {755-764},
abstract = {Accurate identification of units for conservation is particularly challenging for marine species as obvious barriers to gene flow are
generally lacking. Bryde’s whales (Balaenoptera spp.) are subject to multiple human-mediated stressors, including fisheries bycatch,
ship strikes, and scientific whaling by Japan. For effective management, a clear understanding of how populations of each Bryde’s
whale species/subspecies are genetically structured across their range is required. We conducted a population-level analysis of
mtDNA control region sequences with 56 new samples from Oman, Maldives, and Bangladesh, plus published sequences from
off Java and the Northwest Pacific. Nine diagnostic characters in the mitochondrial control region and a maximum parsimony
phylogenetic analysis identified 2 genetically recognized subspecies of Bryde’s whale: the larger, offshore form, Balaenoptera edeni
brydei, and the smaller, coastal form, Balaenoptera edeni edeni. Genetic diversity and differentiation indices, combined with a reconstructed
maximum parsimony haplotype network, indicate strong differences in the genetic diversity and population structure
within each subspecies. Discrete population units are identified for B. e. brydei in the Maldives, Java, and the Northwest Pacific and
for B. e. edeni between the Northern Indian Ocean (Oman and Bangladesh) and the coastal waters of Japan.},
keywords = {balaenoptera, balaenoptera edeni, bangladesh, Bryde's whale, Maldives, Oman, Speciation, taxonomy},
pubstate = {published},
tppubtype = {article}
}
Accurate identification of units for conservation is particularly challenging for marine species as obvious barriers to gene flow are
generally lacking. Bryde’s whales (Balaenoptera spp.) are subject to multiple human-mediated stressors, including fisheries bycatch,
ship strikes, and scientific whaling by Japan. For effective management, a clear understanding of how populations of each Bryde’s
whale species/subspecies are genetically structured across their range is required. We conducted a population-level analysis of
mtDNA control region sequences with 56 new samples from Oman, Maldives, and Bangladesh, plus published sequences from
off Java and the Northwest Pacific. Nine diagnostic characters in the mitochondrial control region and a maximum parsimony
phylogenetic analysis identified 2 genetically recognized subspecies of Bryde’s whale: the larger, offshore form, Balaenoptera edeni
brydei, and the smaller, coastal form, Balaenoptera edeni edeni. Genetic diversity and differentiation indices, combined with a reconstructed
maximum parsimony haplotype network, indicate strong differences in the genetic diversity and population structure
within each subspecies. Discrete population units are identified for B. e. brydei in the Maldives, Java, and the Northwest Pacific and
for B. e. edeni between the Northern Indian Ocean (Oman and Bangladesh) and the coastal waters of Japan.
generally lacking. Bryde’s whales (Balaenoptera spp.) are subject to multiple human-mediated stressors, including fisheries bycatch,
ship strikes, and scientific whaling by Japan. For effective management, a clear understanding of how populations of each Bryde’s
whale species/subspecies are genetically structured across their range is required. We conducted a population-level analysis of
mtDNA control region sequences with 56 new samples from Oman, Maldives, and Bangladesh, plus published sequences from
off Java and the Northwest Pacific. Nine diagnostic characters in the mitochondrial control region and a maximum parsimony
phylogenetic analysis identified 2 genetically recognized subspecies of Bryde’s whale: the larger, offshore form, Balaenoptera edeni
brydei, and the smaller, coastal form, Balaenoptera edeni edeni. Genetic diversity and differentiation indices, combined with a reconstructed
maximum parsimony haplotype network, indicate strong differences in the genetic diversity and population structure
within each subspecies. Discrete population units are identified for B. e. brydei in the Maldives, Java, and the Northwest Pacific and
for B. e. edeni between the Northern Indian Ocean (Oman and Bangladesh) and the coastal waters of Japan.
Anderson, R.C.,Branch, T.A.,Alagiyawadu, A.,Baldwin, A.L.,Marsac, F.
Seasonal distribution, movements and taxonomic status of blue whales (Balaenoptera musculus) in the northern Indian Ocean Journal Article
In: Journal of Cetacean Research and Management, vol. 12, no. 291, pp. 203–218, 2012.
Abstract | Links | BibTeX | Tags: Arabian Sea, balaenoptera musculus, Blue whale, Indian Ocean, Maldives, Movements, Oman, taxonomy
@article{,
title = {Seasonal distribution, movements and taxonomic status of blue whales (Balaenoptera musculus) in the northern Indian Ocean},
author = {Anderson, R.C.,Branch, T.A.,Alagiyawadu, A.,Baldwin, A.L.,Marsac, F.},
url = {https://hal.ird.fr/ird-00777313/document},
year = {2012},
date = {2012-01-01},
journal = {Journal of Cetacean Research and Management},
volume = {12},
number = {291},
pages = {203–218},
abstract = {There is a distinct population of blue whales, Balaenoptera musculus, in the northern Indian Ocean. The taxonomic status of these animals has long
been uncertain, with debate over whether this population represents a distinct subspecies, and if so which name should apply. They have most
frequently been assigned to B. musculus brevicauda, but are currently considered to be B. m. indica. The movements of these blue whales within
the northern Indian Ocean are poorly understood. This paper reviews catches (n = 1,288), sightings (n = 448, with a minimum of 783 animals),
strandings (n = 64) and acoustic detections (n = 6 locations); uses ocean colour data to estimate seasonality of primary productivity in different
areas of the northern Indian Ocean; and develops a migration hypothesis. It is suggested that most of these whales feed in the Arabian Sea off the
coasts of Somalia and the Arabian peninsula during the period of intense upwelling associated with the southwest monsoon (from about May to
October). At the same time some blue whales also feed in the area of upwelling off the southwest coast of India and west coast of Sri Lanka. When
the southwest monsoon dies down in about October–November these upwellings cease. The blue whales then disperse more widely to eke out the
leaner months of the northeast monsoon (during about December to March) in other localised areas with seasonally high productivity. These include
the east coast of Sri Lanka, the waters west of the Maldives, the vicinity of the Indus Canyon (at least historically), and some parts of the southern
Indian Ocean. The data are consistent with the hypothesis that at least some of the blue whales that feed off the east coast of Sri Lanka in the
northeast monsoon also feed in the Arabian Sea during the southwest monsoon. These whales appear to migrate eastwards past the north of Maldives
and south of Sri Lanka in about December–January, returning westwards in about April–May.},
keywords = {Arabian Sea, balaenoptera musculus, Blue whale, Indian Ocean, Maldives, Movements, Oman, taxonomy},
pubstate = {published},
tppubtype = {article}
}
There is a distinct population of blue whales, Balaenoptera musculus, in the northern Indian Ocean. The taxonomic status of these animals has long
been uncertain, with debate over whether this population represents a distinct subspecies, and if so which name should apply. They have most
frequently been assigned to B. musculus brevicauda, but are currently considered to be B. m. indica. The movements of these blue whales within
the northern Indian Ocean are poorly understood. This paper reviews catches (n = 1,288), sightings (n = 448, with a minimum of 783 animals),
strandings (n = 64) and acoustic detections (n = 6 locations); uses ocean colour data to estimate seasonality of primary productivity in different
areas of the northern Indian Ocean; and develops a migration hypothesis. It is suggested that most of these whales feed in the Arabian Sea off the
coasts of Somalia and the Arabian peninsula during the period of intense upwelling associated with the southwest monsoon (from about May to
October). At the same time some blue whales also feed in the area of upwelling off the southwest coast of India and west coast of Sri Lanka. When
the southwest monsoon dies down in about October–November these upwellings cease. The blue whales then disperse more widely to eke out the
leaner months of the northeast monsoon (during about December to March) in other localised areas with seasonally high productivity. These include
the east coast of Sri Lanka, the waters west of the Maldives, the vicinity of the Indus Canyon (at least historically), and some parts of the southern
Indian Ocean. The data are consistent with the hypothesis that at least some of the blue whales that feed off the east coast of Sri Lanka in the
northeast monsoon also feed in the Arabian Sea during the southwest monsoon. These whales appear to migrate eastwards past the north of Maldives
and south of Sri Lanka in about December–January, returning westwards in about April–May.
been uncertain, with debate over whether this population represents a distinct subspecies, and if so which name should apply. They have most
frequently been assigned to B. musculus brevicauda, but are currently considered to be B. m. indica. The movements of these blue whales within
the northern Indian Ocean are poorly understood. This paper reviews catches (n = 1,288), sightings (n = 448, with a minimum of 783 animals),
strandings (n = 64) and acoustic detections (n = 6 locations); uses ocean colour data to estimate seasonality of primary productivity in different
areas of the northern Indian Ocean; and develops a migration hypothesis. It is suggested that most of these whales feed in the Arabian Sea off the
coasts of Somalia and the Arabian peninsula during the period of intense upwelling associated with the southwest monsoon (from about May to
October). At the same time some blue whales also feed in the area of upwelling off the southwest coast of India and west coast of Sri Lanka. When
the southwest monsoon dies down in about October–November these upwellings cease. The blue whales then disperse more widely to eke out the
leaner months of the northeast monsoon (during about December to March) in other localised areas with seasonally high productivity. These include
the east coast of Sri Lanka, the waters west of the Maldives, the vicinity of the Indus Canyon (at least historically), and some parts of the southern
Indian Ocean. The data are consistent with the hypothesis that at least some of the blue whales that feed off the east coast of Sri Lanka in the
northeast monsoon also feed in the Arabian Sea during the southwest monsoon. These whales appear to migrate eastwards past the north of Maldives
and south of Sri Lanka in about December–January, returning westwards in about April–May.
Amaral, A.R.,Beheregaray, L.B.,Sequeira, M.,Robertson, K.M.,Coelho, M.M., Möller, L.M.
Worldwide Phylogeography of the genus Delphinus revisited Technical Report
no. 7, 2009, ISBN: SC/61/SM11.
Abstract | BibTeX | Tags: Arabian Sea, Common dolphin, delphinus capensis, Delphinus delphis, delphinus sp., genetics, Indian Ocean, taxonomy
@techreport{,
title = {Worldwide Phylogeography of the genus Delphinus revisited},
author = {Amaral, A.R.,Beheregaray, L.B.,Sequeira, M.,Robertson, K.M.,Coelho, M.M., Möller, L.M.},
issn = {SC/61/SM11},
year = {2009},
date = {2009-01-01},
journal = {Report to the Scientific Committee of the 61st meeting of the International Whaling Commisssion},
number = {7},
publisher = {International Whaling Commission},
abstract = {The genus Delphinus comprises two species and one subspecies: the short-beaked common
dolphin, Delphinus delphis (Linnaeus, 1758), distributed in continental shelf and pelagic waters of
the Atlantic and Pacific Oceans, the long-beaked common dolphin, D. capensis (Gray, 1828),
distributed in nearshore tropical and temperate waters of the Pacific and Southern Atlantic Oceans,
and the Arabian long-beaked common dolphin, D. capensis tropicalis van Bree, 1971, which
occurs in the Indian Ocean. Here we present a worldwide phylogeographic study based on
sequences of the mitochondrial DNA cytochrome b gene. A total of 279 individuals were
analysed: 211 D. delphis from the Northeast (82) and Northwest (27) Atlantic, and Northeast (28)
and Southwest (74) Pacific; 26 D. capensis from the Northeast Pacific, 18 D. capensis from the
Southeast Atlantic, and 24 D. capensis tropicalis from the Indian Ocean. Haplotype and nucleotide
diversities of most populations were high when compared with other cetacean species, which is
possibly a signature of large, long-term effective population size. Shared haplotypes between the
two common dolphin species and subspecies were found, as well as between all oceans sampled.
Fixation indices (öST and FST) show that the tropicalis and D. capensis samples from the NE
Pacific are differentiated from samples from all other regions. D. delphis from the Northeast and
Southwest Pacific also show some differentiation from samples from other regions, but with
relatively low values of fixation indices. In contrast, the median-joining network reveals clusters
of haplotypes without a clear geographical or taxonomic correspondence. Overall, these results
suggest that relatively high levels of gene flow occur between regions and possibly among
recognized species, questioning current taxonomy, confounding population history and making the
establishment of population boundaries very difficult. Several phylogeographical hypotheses for
the observed patterns are currently being tested with recently developed methods that use
coalescent models for estimating demographic parameters. Additionally, data on a powerful set of
microsatellite markers are being obtained in order to document the direction and magnitude of
events of recent gene flow between populations and oceanic regions.},
keywords = {Arabian Sea, Common dolphin, delphinus capensis, Delphinus delphis, delphinus sp., genetics, Indian Ocean, taxonomy},
pubstate = {published},
tppubtype = {techreport}
}
The genus Delphinus comprises two species and one subspecies: the short-beaked common
dolphin, Delphinus delphis (Linnaeus, 1758), distributed in continental shelf and pelagic waters of
the Atlantic and Pacific Oceans, the long-beaked common dolphin, D. capensis (Gray, 1828),
distributed in nearshore tropical and temperate waters of the Pacific and Southern Atlantic Oceans,
and the Arabian long-beaked common dolphin, D. capensis tropicalis van Bree, 1971, which
occurs in the Indian Ocean. Here we present a worldwide phylogeographic study based on
sequences of the mitochondrial DNA cytochrome b gene. A total of 279 individuals were
analysed: 211 D. delphis from the Northeast (82) and Northwest (27) Atlantic, and Northeast (28)
and Southwest (74) Pacific; 26 D. capensis from the Northeast Pacific, 18 D. capensis from the
Southeast Atlantic, and 24 D. capensis tropicalis from the Indian Ocean. Haplotype and nucleotide
diversities of most populations were high when compared with other cetacean species, which is
possibly a signature of large, long-term effective population size. Shared haplotypes between the
two common dolphin species and subspecies were found, as well as between all oceans sampled.
Fixation indices (öST and FST) show that the tropicalis and D. capensis samples from the NE
Pacific are differentiated from samples from all other regions. D. delphis from the Northeast and
Southwest Pacific also show some differentiation from samples from other regions, but with
relatively low values of fixation indices. In contrast, the median-joining network reveals clusters
of haplotypes without a clear geographical or taxonomic correspondence. Overall, these results
suggest that relatively high levels of gene flow occur between regions and possibly among
recognized species, questioning current taxonomy, confounding population history and making the
establishment of population boundaries very difficult. Several phylogeographical hypotheses for
the observed patterns are currently being tested with recently developed methods that use
coalescent models for estimating demographic parameters. Additionally, data on a powerful set of
microsatellite markers are being obtained in order to document the direction and magnitude of
events of recent gene flow between populations and oceanic regions.
dolphin, Delphinus delphis (Linnaeus, 1758), distributed in continental shelf and pelagic waters of
the Atlantic and Pacific Oceans, the long-beaked common dolphin, D. capensis (Gray, 1828),
distributed in nearshore tropical and temperate waters of the Pacific and Southern Atlantic Oceans,
and the Arabian long-beaked common dolphin, D. capensis tropicalis van Bree, 1971, which
occurs in the Indian Ocean. Here we present a worldwide phylogeographic study based on
sequences of the mitochondrial DNA cytochrome b gene. A total of 279 individuals were
analysed: 211 D. delphis from the Northeast (82) and Northwest (27) Atlantic, and Northeast (28)
and Southwest (74) Pacific; 26 D. capensis from the Northeast Pacific, 18 D. capensis from the
Southeast Atlantic, and 24 D. capensis tropicalis from the Indian Ocean. Haplotype and nucleotide
diversities of most populations were high when compared with other cetacean species, which is
possibly a signature of large, long-term effective population size. Shared haplotypes between the
two common dolphin species and subspecies were found, as well as between all oceans sampled.
Fixation indices (öST and FST) show that the tropicalis and D. capensis samples from the NE
Pacific are differentiated from samples from all other regions. D. delphis from the Northeast and
Southwest Pacific also show some differentiation from samples from other regions, but with
relatively low values of fixation indices. In contrast, the median-joining network reveals clusters
of haplotypes without a clear geographical or taxonomic correspondence. Overall, these results
suggest that relatively high levels of gene flow occur between regions and possibly among
recognized species, questioning current taxonomy, confounding population history and making the
establishment of population boundaries very difficult. Several phylogeographical hypotheses for
the observed patterns are currently being tested with recently developed methods that use
coalescent models for estimating demographic parameters. Additionally, data on a powerful set of
microsatellite markers are being obtained in order to document the direction and magnitude of
events of recent gene flow between populations and oceanic regions.
Jayasankar, P.,Anoop, B.,Vivekanandan, E.,Rajagopalan, M.,Yousuf, K.M.M.,Reynolds, P.,Krishnakumar, P.K.,Kumaran, PL.,Afsal, V.V.,Krishnan, A.A.
Molecular identification of delphinids and finless porpoise (Cetacea) from the Arabian Sea and Bay of Bengal Journal Article
In: Zootaxa, vol. 1853, no. 125, pp. 57-67, 2008.
Abstract | BibTeX | Tags: bottlenose dolphin, Common dolphin, D.capensis, DNA, Finless Porpoise, India, Neophocaena phocaenoides, sousa, species identification, Spinner dolphin, Stenella longirostris, taxonomy, tursiops aduncus
@article{,
title = {Molecular identification of delphinids and finless porpoise (Cetacea) from the Arabian Sea and Bay of Bengal},
author = {Jayasankar, P.,Anoop, B.,Vivekanandan, E.,Rajagopalan, M.,Yousuf, K.M.M.,Reynolds, P.,Krishnakumar, P.K.,Kumaran, PL.,Afsal, V.V.,Krishnan, A.A.},
year = {2008},
date = {2008-01-01},
journal = {Zootaxa},
volume = {1853},
number = {125},
pages = {57-67},
abstract = {The exact number of extant delphinid species from seas around India is still debated and the lack of adequate field keys
and reliable inventory has resulted in misidentification of several species. As a part of a project to develop a molecular
taxonomy of cetaceans from this region, partial sequences of mtDNA cytochrome b were generated from accidentally
caught/stranded delphinids and finless porpoise. Species were identified by phylogenetic reconstruction of sample
sequences with the reference sequences available in portals GenBank (NCBI) and the web-based program DNA Surveillance.
A comparison was made with the homologous sequences of corresponding species from other seas of the world.
Our molecular investigations allowed us to identify five species of cetaceans from Indian coasts, including Delphinus
capensis, previously reported as D. delphis. We detected unique haplotypes in Indo pacific humpbacked dolphin (Sousa
chinensis; n = 2) and finless porpoise (Neophocaena phocaenoides; n = 12) from Indian coast. On the other hand, some
haplotypes were shared with other regional populations in spinner dolphin (Stenella longirostris; n = 16) and bottlenose
dolphin (Tursiops aduncus; n = 3). Common dolphins (Delphinus capensis; n = 2) had both unique and shared haplotypes
including one highly divergent sequence.},
keywords = {bottlenose dolphin, Common dolphin, D.capensis, DNA, Finless Porpoise, India, Neophocaena phocaenoides, sousa, species identification, Spinner dolphin, Stenella longirostris, taxonomy, tursiops aduncus},
pubstate = {published},
tppubtype = {article}
}
The exact number of extant delphinid species from seas around India is still debated and the lack of adequate field keys
and reliable inventory has resulted in misidentification of several species. As a part of a project to develop a molecular
taxonomy of cetaceans from this region, partial sequences of mtDNA cytochrome b were generated from accidentally
caught/stranded delphinids and finless porpoise. Species were identified by phylogenetic reconstruction of sample
sequences with the reference sequences available in portals GenBank (NCBI) and the web-based program DNA Surveillance.
A comparison was made with the homologous sequences of corresponding species from other seas of the world.
Our molecular investigations allowed us to identify five species of cetaceans from Indian coasts, including Delphinus
capensis, previously reported as D. delphis. We detected unique haplotypes in Indo pacific humpbacked dolphin (Sousa
chinensis; n = 2) and finless porpoise (Neophocaena phocaenoides; n = 12) from Indian coast. On the other hand, some
haplotypes were shared with other regional populations in spinner dolphin (Stenella longirostris; n = 16) and bottlenose
dolphin (Tursiops aduncus; n = 3). Common dolphins (Delphinus capensis; n = 2) had both unique and shared haplotypes
including one highly divergent sequence.
and reliable inventory has resulted in misidentification of several species. As a part of a project to develop a molecular
taxonomy of cetaceans from this region, partial sequences of mtDNA cytochrome b were generated from accidentally
caught/stranded delphinids and finless porpoise. Species were identified by phylogenetic reconstruction of sample
sequences with the reference sequences available in portals GenBank (NCBI) and the web-based program DNA Surveillance.
A comparison was made with the homologous sequences of corresponding species from other seas of the world.
Our molecular investigations allowed us to identify five species of cetaceans from Indian coasts, including Delphinus
capensis, previously reported as D. delphis. We detected unique haplotypes in Indo pacific humpbacked dolphin (Sousa
chinensis; n = 2) and finless porpoise (Neophocaena phocaenoides; n = 12) from Indian coast. On the other hand, some
haplotypes were shared with other regional populations in spinner dolphin (Stenella longirostris; n = 16) and bottlenose
dolphin (Tursiops aduncus; n = 3). Common dolphins (Delphinus capensis; n = 2) had both unique and shared haplotypes
including one highly divergent sequence.
Rosenbaum,H.C.,Glaberman,S.,Jefferson,T.,Collins,T.,Minton,G.,Peddemors,V.,Baldwin,R.M.
Phylogenetic relationships and population structure among humpback dolphins based on mtDNA variation Technical Report
no. 459, 2002, ISBN: SC/54/SM34.
Abstract | BibTeX | Tags: control region, dolphin, dolphins, humpback dolphins, International Whaling Commission, mtDNA, Oman, Pacific Ocean, phylogenetic, population, population structure, South Africa, status, taxonomy, whaling
@techreport{,
title = {Phylogenetic relationships and population structure among humpback dolphins based on mtDNA variation},
author = {Rosenbaum,H.C.,Glaberman,S.,Jefferson,T.,Collins,T.,Minton,G.,Peddemors,V.,Baldwin,R.M.},
issn = {SC/54/SM34},
year = {2002},
date = {2002-01-01},
journal = {Document presented to the 54th meeting of the International Whaling Commission},
volume = {SC/54/SM34},
number = {459},
pages = {1-8},
abstract = {The taxonomy, systematic relationships, and population structure of humpback dolphins (genus Sousa) have been controversial. Various nominal species have been described or subsumed. Recent reports have suggested the division of Sousa into one to three distinct species or sub-species. However, many of these analyses have not been conducted in a proper systematics framework, did not include all representative putative taxa or were lacking specimens from parts of their geographic range, and have not been in published in peer-reviewed journals (typically necessary for revising taxonomy). In order to address relationships and taxonomic status among Sousa species, we present a preliminary genetic analysis of humpback dolphins primarily from Southeast Asia, the coast of Oman, and South Africa. A total of 110 samples were sequenced for 501 by of mtDNA control region and significant population structuring at the regional level was revealed. Population Aggregation and phylogenetic analyses of mtDNA control region lineages and a subset of lineages analyzed for a 358 by fragment of Cytochrome B revealed a series of complex relationships among humpback dolphins in the Indian and Pacific Oceans. These preliminary data are a critical first step to better understanding the taxonomy and systematics in the genus Sousa. Additional molecular character data from other mitochondria) and nuclear genes will be essential for resolving relationship and taxonomic status for humpback dolphins.},
keywords = {control region, dolphin, dolphins, humpback dolphins, International Whaling Commission, mtDNA, Oman, Pacific Ocean, phylogenetic, population, population structure, South Africa, status, taxonomy, whaling},
pubstate = {published},
tppubtype = {techreport}
}
The taxonomy, systematic relationships, and population structure of humpback dolphins (genus Sousa) have been controversial. Various nominal species have been described or subsumed. Recent reports have suggested the division of Sousa into one to three distinct species or sub-species. However, many of these analyses have not been conducted in a proper systematics framework, did not include all representative putative taxa or were lacking specimens from parts of their geographic range, and have not been in published in peer-reviewed journals (typically necessary for revising taxonomy). In order to address relationships and taxonomic status among Sousa species, we present a preliminary genetic analysis of humpback dolphins primarily from Southeast Asia, the coast of Oman, and South Africa. A total of 110 samples were sequenced for 501 by of mtDNA control region and significant population structuring at the regional level was revealed. Population Aggregation and phylogenetic analyses of mtDNA control region lineages and a subset of lineages analyzed for a 358 by fragment of Cytochrome B revealed a series of complex relationships among humpback dolphins in the Indian and Pacific Oceans. These preliminary data are a critical first step to better understanding the taxonomy and systematics in the genus Sousa. Additional molecular character data from other mitochondria) and nuclear genes will be essential for resolving relationship and taxonomic status for humpback dolphins.
Van Waerebeek,K.,Gallagher,M.,Baldwin,R.,Papastavrou,V.,Al-Lawati,S.M.
Morphology and distribution of the spinner dolphin, Stenella longirostris, rough-toothed dolphin, Steno brednanensis and melon-headed whale, Peponocephala electra, from waters off the Sultanate of Oman Journal Article
In: The Journal of Cetacean Research and Management, vol. 1, no. 491, pp. 167-177, 1999.
Abstract | BibTeX | Tags: Distribution, Indian Ocean, length, melon-headed whale, morphometrics, Oman, rough-toothed dolphin, Spinner dolphin, Stock identity, taxonomy
@article{,
title = {Morphology and distribution of the spinner dolphin, Stenella longirostris, rough-toothed dolphin, Steno brednanensis and melon-headed whale, Peponocephala electra, from waters off the Sultanate of Oman},
author = {Van Waerebeek,K.,Gallagher,M.,Baldwin,R.,Papastavrou,V.,Al-Lawati,S.M.},
year = {1999},
date = {1999-01-01},
journal = {The Journal of Cetacean Research and Management},
volume = {1},
number = {491},
pages = {167-177},
abstract = {Two previously mis-identified specimens at the Oman Natural History Museum are re-identified as a melon-headed whale and a rough-toothed dolphin. Body lengths of adult male spinner dolphins were smaller than any known stock of spinner dolphins except the dwarf forms in Thailand and Australia and skulls were indistinguishable from those of the eastern spinner dolphins (S.l. orientalis). Two colour morphs of spinner dolphins were observed. The paper concludes that Oman spinner dolphins should be treated as a discrete population, morphologically distinct from all known spinner dolphin sub-species.},
keywords = {Distribution, Indian Ocean, length, melon-headed whale, morphometrics, Oman, rough-toothed dolphin, Spinner dolphin, Stock identity, taxonomy},
pubstate = {published},
tppubtype = {article}
}
Two previously mis-identified specimens at the Oman Natural History Museum are re-identified as a melon-headed whale and a rough-toothed dolphin. Body lengths of adult male spinner dolphins were smaller than any known stock of spinner dolphins except the dwarf forms in Thailand and Australia and skulls were indistinguishable from those of the eastern spinner dolphins (S.l. orientalis). Two colour morphs of spinner dolphins were observed. The paper concludes that Oman spinner dolphins should be treated as a discrete population, morphologically distinct from all known spinner dolphin sub-species.
Smeenk,C.,Addink,M.J.,Van den Berg,A.B.,Bosman C.A.W.,Cad‚e,G.C.
Sightings of Journal Article
In: Bonn.Zool.Beitr., no. 232, pp. 389 -398, 1996.
Abstract | BibTeX | Tags: Arabia, D.capensis, Delphinus tropicalis, Distribution, Indian Ocean, population, Red Sea, skulls, taxonomy
@article{,
title = {Sightings of },
author = {Smeenk,C.,Addink,M.J.,Van den Berg,A.B.,Bosman C.A.W.,Cad‚e,G.C.},
year = {1996},
date = {1996-01-01},
journal = {Bonn.Zool.Beitr.},
number = {232},
pages = {389 -398},
abstract = {Delphinus tropicalis Van Bree, 1971 is an extremely long-beaked form occurring in neritic habitats in the northern Indian Ocean and neighbouring seas. In June 1984 and March 1993 we observed dolphins in the southern Red Sea which agreed with the external characters described for this form. The animals were identified with tropicalis by their most prominent feature: a very long beak as compared to D. delphis L., the taxonomic history and distribution of D. tropicalis is reviewed. A limited study of six Delphinus skulls from the Arabian peninsula suggests that D. tropicalis and D. capensis cannot be readily separated. It is suggested that D. tropicalis may constitute a very long-beaked form or population of D. capensis.},
keywords = {Arabia, D.capensis, Delphinus tropicalis, Distribution, Indian Ocean, population, Red Sea, skulls, taxonomy},
pubstate = {published},
tppubtype = {article}
}
Delphinus tropicalis Van Bree, 1971 is an extremely long-beaked form occurring in neritic habitats in the northern Indian Ocean and neighbouring seas. In June 1984 and March 1993 we observed dolphins in the southern Red Sea which agreed with the external characters described for this form. The animals were identified with tropicalis by their most prominent feature: a very long beak as compared to D. delphis L., the taxonomic history and distribution of D. tropicalis is reviewed. A limited study of six Delphinus skulls from the Arabian peninsula suggests that D. tropicalis and D. capensis cannot be readily separated. It is suggested that D. tropicalis may constitute a very long-beaked form or population of D. capensis.
Gervais,H.P.
Sur une Nouvelle Espèce de Mégaptère (Megaptera indica) Provenant du Golfe Persique Journal Article
In: Nouvelles archives du Muséum d'Histoire Naturelle, Paris, vol. 10, no. 99, pp. 199-218, 1888.
BibTeX | Tags: Arabian Gulf, Arabian Sea, Humpback Whale, megaptera novaeangliae, Persian Gulf, taxonomy
@article{,
title = {Sur une Nouvelle Espèce de Mégaptère (Megaptera indica) Provenant du Golfe Persique},
author = {Gervais,H.P.},
year = {1888},
date = {1888-01-01},
journal = {Nouvelles archives du Muséum d'Histoire Naturelle, Paris},
volume = {10},
number = {99},
pages = {199-218},
keywords = {Arabian Gulf, Arabian Sea, Humpback Whale, megaptera novaeangliae, Persian Gulf, taxonomy},
pubstate = {published},
tppubtype = {article}
}