Osteological differences between two sympatric forms of bottlenose dolphins (genus Tursiops) in Chinese waters

Wang, J. Y.; Chou, Lien‐Siang; White, Bradley N.

doi:10.1017/s0952836900009894

Cited by 24 publications

(59 citation statements)

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“…When comparing T. australis to T. aduncus there is also clear differences. Tursiops australis shows a longer and wider skull to T. aduncus holotype specimen [34] and to reported T. aduncus from both South African and Chinese water [32] (Table S11). In addition the T. aduncus rostrum is significantly narrower across all measures and has more teeth (Table 2 and Table S11).…”

Section: Discussionmentioning

confidence: 63%

“…Specimens were collected from locations across coastal Victoria (Museum Victoria (MV) (n = 26); and Monash University (MU) (n = 5) collections), Tasmania (Tasmanian Museum and Art Gallery (TMAG) (n = 5); Queen Victoria Museum and Art Gallery (QVMAG) (n = 5) collections) and Queensland Museum (QM) (n = 4) (Table 1). Cranial measures largely followed Kemper [20] and Wang et al [32]. We included an undescribed measure, anterior pterygoid apex to palatine (APAP); plus two undescribed qualitative features, shape of the palatine and flattening on the maxilla at the base of the rostrum (Table S1).…”

Section: Methodsmentioning

confidence: 99%

“…However T. aduncus is now known to be present in Queensland waters [33]. As such, we enlisted the technique used by Perrin et al [34] in their assessment of the holotype specimen of T. aduncus , and used the range (min-max) of cranial measures presented in Wang et al [32], to conclude the four QM specimens were referable of T. aduncus .…”

Section: Methodsmentioning

confidence: 99%

“…Only recently T. aduncus has been revalidated as the second Tursiops species, this based on morphological and mitochondrial DNA data [5], [9], [10], [11]. In fact numerous studies have demonstrated that Tursiops is polyphyletic [5], [12], [13], [14], [15].…”

Section: Introductionmentioning

confidence: 99%

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A New Dolphin Species, the Burrunan Dolphin Tursiops australis sp. nov., Endemic to Southern Australian Coastal Waters

et al. 2011

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Small coastal dolphins endemic to south-eastern Australia have variously been assigned to described species Tursiops truncatus, T. aduncus or T. maugeanus; however the specific affinities of these animals is controversial and have recently been questioned. Historically ‘the southern Australian Tursiops’ was identified as unique and was formally named Tursiops maugeanus but was later synonymised with T. truncatus. Morphologically, these coastal dolphins share some characters with both aforementioned recognised Tursiops species, but they also possess unique characters not found in either. Recent mtDNA and microsatellite genetic evidence indicates deep evolutionary divergence between this dolphin and the two currently recognised Tursiops species. However, in accordance with the recommendations of the Workshop on Cetacean Systematics, and the Unified Species Concept the use of molecular evidence alone is inadequate for describing new species. Here we describe the macro-morphological, colouration and cranial characters of these animals, assess the available and new genetic data, and conclude that multiple lines of evidence clearly indicate a new species of dolphin. We demonstrate that the syntype material of T. maugeanus comprises two different species, one of which is the historical ‘southern form of Tursiops’ most similar to T. truncatus, and the other is representative of the new species and requires formal classification. These dolphins are here described as Tursiops australis sp. nov., with the common name of ‘Burrunan Dolphin’ following Australian aboriginal narrative. The recognition of T. australis sp. nov. is particularly significant given the endemism of this new species to a small geographic region of southern and south-eastern Australia, where only two small resident populations in close proximity to a major urban and agricultural centre are known, giving them a high conservation value and making them susceptible to numerous anthropogenic threats.

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Section: Discussionmentioning

confidence: 63%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A New Dolphin Species, the Burrunan Dolphin Tursiops australis sp. nov., Endemic to Southern Australian Coastal Waters

et al. 2011

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“…aduncus) is distinguished from T. truncatus by the ventral spotting in adult specimens, smaller body size, a longer and more slender rostrum, more teeth, and smaller width of the pterygo-palatine complex ( van Bree 1966, Ross 1977, Hale et al 2000, Wang et al 2000a, b, Kemper 2004, Kurihara and Oda 2006. However, many researchers have pointed out that the supposedly distinguishing traits overlap (Wang et al 2000b, Kemper 2004, Kurihara and Oda 2006. Rice (1998) found that the differences between the two Tursiops species were obscured by geographic strata.…”

mentioning

confidence: 99%

Cranial variation in bottlenose dolphinsTursiops spp. from the Indian andwestern Pacific Oceans: additional evidence for two species

Kurihara

Oda

2007

Acta Theriol

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Skull morphology of bottlenose dolphins from different ocean populations with emphasis on South America

Hohl

Sicuro

Wickert

et al. 2020

Journal of Morphology

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The bottlenose dolphin, genus Tursiops, is cosmopolitan occurring in tropical and temperate regions, with morphological variation between and within different oceans.Since the genus' taxonomy has been under discussion for a long time, this work aimed at analyzing the cranial variability of T. truncatus from different regions of the world.Geometric Morphometrics analyses were performed in 201 skulls of adult specimens, on dorsal, ventral, and lateral views, from the Eastern North Pacific, Eastern North Atlantic, Eastern South Atlantic, and Western South Atlantic oceans. The results indicate differences between individuals that inhabit the Atlantic and Pacific oceans.Within the Atlantic Ocean, there is an evident longitudinal differentiation of specimens from the eastern and western regions. A latitudinal separation was also observed, considering specimens from the North and South Atlantic Ocean. In the Western South Atlantic statistical differences were found between two morphological groups, identified as T. gephyreus (sensu Lahille, 1908) and T. truncatus, and the cross-validation presented 98% as minimum confidence for correct classification of these two groups. The present study provides strong morphological support to consider these two lineages as separate species. K E Y W O R D S biogeography, morphological comparison, Odontoceti

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Osteological differences between two sympatric forms of bottlenose dolphins (genus Tursiops) in Chinese waters

Cited by 24 publications

References 0 publications

A New Dolphin Species, the Burrunan Dolphin Tursiops australis sp. nov., Endemic to Southern Australian Coastal Waters

A New Dolphin Species, the Burrunan Dolphin Tursiops australis sp. nov., Endemic to Southern Australian Coastal Waters

Cranial variation in bottlenose dolphinsTursiops spp. from the Indian andwestern Pacific Oceans: additional evidence for two species

Skull morphology of bottlenose dolphins from different ocean populations with emphasis on South America

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