Need morphology always be required for new species descriptions?

Cook, Lyn G.; Edwards, R. E.; Crisp, Michael D.; Hardy, Nate B.

doi:10.1071/is10011

Cited by 136 publications

(107 citation statements)

References 37 publications

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“…The formal naming of species provides a means for communicating the unique properties of distinct evolutionary lineages, even if they are morphologically indistinguishable. The absence of morphological data or traits should not preclude publication of a species description with only DNA-sequence data as a diagnosis (Cook et al, 2010). The formal names introduced here link distinct COI-barcodes to type specimens, known geographic distributions and symbiont associations.…”

Section: Discussionmentioning

confidence: 99%

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Molecular taxonomy and naming of five cryptic species ofAlviniconchasnails (Gastropoda: Abyssochrysoidea) from hydrothermal vents

Johnson

Warèn

Tunnicliffe

et al. 2014

Systematics and Biodiversity

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(2015) Molecular taxonomy and naming of five cryptic species of Alviniconcha snails (Gastropoda: Abyssochrysoidea) from hydrothermal vents, Systematics and Biodiversity, 13:3, 278-295, DOI: 10.1080/14772000.2014 Large symbiont-hosting snails of the genus Alviniconcha (Gastropoda: Abyssochrysidae) are among the dominant inhabitants of hydrothermal vents in the Western Pacific and Indian oceans. The genus was originally described as monotypic, but unique DNA sequences for mitochondrial genes revealed six distinct evolutionary lineages that we could not distinguish based on external morphology. Subsumed under the name Alviniconcha hessleri Okutani & Ohta, the distinct allopatric and sympatric lineages have been assigned placeholder epithets that complicate scientific communications. Based on the present multi-gene sequence data, we hereby describe five Alviniconcha species (in the order of their discovery) À A. kojimai sp. nov., A. boucheti sp. nov., A. marisindica sp. nov., A. strummeri sp. nov. and A. adamantis sp. nov. Thus, we restrict application of the name A. hessleri to specimens that are genetically similar (95% for COI) to those found at localities in the Mariana Trough. Single distinct Alviniconcha species inhabit vent fields along the Central Indian Ridge, the Mariana volcanic arc, and the Mariana back-arc basin, whereas vents in the Manus, Fiji and Lau back-arc basins may host two or three additional species. Formal recognition of these species facilitates future attempts to assess their physiological differences and symbiont associations. Furthermore, their reported distributions have significant biogeographic implications, affecting estimates of the diversity within and overlap among Indo-Pacific vent localities.http://zoobank.org/urn:lsid:zoobank.org:pub:1E4B2E71-9F1D-479E-9A9A-22A9E303AAE5

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Section: Discussionmentioning

confidence: 99%

“…The five additional species were from Western Pacific and Indian oceans. The field of taxonomy is rapidly evolving to accept 'molecular' species descriptions in the absence of other reliable characters (Cook, Edwards, Crisp, & Hardy, 2010). Many arguments have been levied against the practice of molecular species descriptions À e.g.…”

Section: Introductionmentioning

confidence: 99%

Molecular taxonomy and naming of five cryptic species ofAlviniconchasnails (Gastropoda: Abyssochrysoidea) from hydrothermal vents

Johnson

Warèn

Tunnicliffe

et al. 2014

Systematics and Biodiversity

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“…Molecular systematic and population genetic methods are crucial to unearthing cryptic taxa (Cook et al 2010), owing at least, in some taxonomic groups, to their morphological constancy. This has been recently documented among the Western Australian subterranean fauna by Bradford et al (2010) and Guzik et al (2011b).…”

Section: Fire Millipedes (Family Pachybolidae)mentioning

confidence: 99%

Protecting the innocent: studying short-range endemic taxa enhances conservation outcomes

Harvey

Rix

Framenau

et al. 2011

Invert. Systematics

141

104

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Abstract.A major challenge confronting many contemporary systematists is how to integrate standard taxonomic research with conservation outcomes. With a biodiversity crisis looming and ongoing impediments to taxonomy, how can systematic research continue to document species and infer the 'Tree of Life', and still maintain its significance to conservation science and to protecting the very species it strives to understand? Here we advocate a systematic research program dedicated to documenting short-range endemic taxa, which are species with naturally small distributions and, by their very nature, most likely to be threatened by habitat loss, habitat degradation and climate change. This research can dovetail with the needs of industry and government to obtain high-quality data to inform the assessment of impacts of major development projects that affect landscapes and their biological heritage. We highlight how these projects are assessed using criteria mandated by Western Australian legislation and informed by guidance statements issued by the Environmental Protection Authority (Western Australia). To illustrate slightly different biological scenarios, we also provide three case studies from the Pilbara region of Western Australia, which include examples demonstrating a rapid rise in the collection and documentation of diverse and previously unknown subterranean and surface faunas, as well as how biological surveys can clarify the status of species thought to be rare or potentially threatened. We argue that 'whole of biota' surveys (that include all invertebrates) are rarely fundable and are logistically impossible, and that concentrated research on some of the most vulnerable elements in the landscape -short-range endemics, including troglofauna and stygofauna -can help to enhance conservation and research outcomes.

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“…Phylogenetic species were identified using the Population Aggregation Analysis algorithm, that involves a search for fixed differences between local populations, followed by successive rounds of aggregation of populations and previously aggregated population groups that are not distinct from each other (Davis & Nixon, 1992), and complementary analytical procedures described by Cook et al (2010).…”

Section: Methodsmentioning

confidence: 99%

Molecular diagnosis of the arowanas Osteoglossum ferreirai Kanazawa, 1966 and O. bicirrhossum (Cuvier, 1829) from the Orinoco and Amazon River basins

Farias

et al. 2013

Neotrop. ichthyol.

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The arowanas, fishes of Gondwanan origin, are represented in South America by the genus Osteoglossum. All species were initially reported as being exclusive to the Amazon region, with O. ferreirai restricted to the Negro River basin and O. bicirrhosum to the Amazon and Essequibo Rivers basin. Starting in the mid 1970's it was reported that O. ferreirai also occurs in the Orinoco River basin. In all regions the arowanas assumed significant socio-economic importance due to their popularity in the international ornamental fish trade, leading to over-exploitation of both species in some areas. The Orinoco populations are particularly heavily exploited, and thus conservation and management measures are needed. Both depend on the clarification of taxonomic status, and phylogenetic distinctness of the Orinoco populations. With the goal of molecularly characterizing the two species of Osteoglossum, and comparing populations of Osteoglossum from the Orinoco and Amazon basins, we characterized individuals sampled from eight localities, one in the Orinoco River basin and seven in the Amazon River basin. We sampled 39 individuals, obtaining 1004 base pairs, of which 79 were synapomorphies. Genetic distance between the two species calculated using the HKY + G model of molecular evolution was 8.94%. Intraspecific distances ranged from 0.42% in O. bicirrhosum to 0.10% in O. ferreirai. The genetic characterization confirmed the taxonomic status of O. ferreirai in the Orinoco basin, and suggested that its distribution in the Orinoco basin is unlikely to be the result of vicariance or natural dispersal, but rather an anthropic introduction.

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Need morphology always be required for new species descriptions?

Cited by 136 publications

References 37 publications

Molecular taxonomy and naming of five cryptic species ofAlviniconchasnails (Gastropoda: Abyssochrysoidea) from hydrothermal vents

Molecular taxonomy and naming of five cryptic species ofAlviniconchasnails (Gastropoda: Abyssochrysoidea) from hydrothermal vents

Protecting the innocent: studying short-range endemic taxa enhances conservation outcomes

Molecular diagnosis of the arowanas Osteoglossum ferreirai Kanazawa, 1966 and O. bicirrhossum (Cuvier, 1829) from the Orinoco and Amazon River basins

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