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Resolving the confusion: Amietia vertebralis and A. umbraculata tadpole morphology

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dc.contributor.author Van Preez, Louis Heyns
dc.contributor.author Weldon, Ché
dc.contributor.author Kruger, Donavan Johannes David
dc.date.accessioned 2012-08-30T07:06:09Z
dc.date.available 2012-08-30T07:06:09Z
dc.date.issued 2011
dc.identifier.citation Kruger, D.J.D. et al. 2011. Resolving the confusion: Amietia vertebralis and A. umbraculata tadpole morphology. African zoology, 46(2):309-319. [http://africanzoology.journals.ac.za/pub] en_US
dc.identifier.issn 1562-7020
dc.identifier.issn 2224-073X (Online)
dc.identifier.uri http://hdl.handle.net/10394/7148
dc.description.abstract Morphological similarities between the tadpoles of Amietia umbraculata and A. vertebralis have led to confusion and incorrect descriptions and identifications in the literature. Based on 33 body measurements and ratios we revised the morphological descriptions of the tadpoles of the two species. Tadpole identification was verified through DNA sequencing using mitochondrial (16S) gene fragments. A combination of four morphological characters proved to be informative and consistent in distinguishing between tadpoles of the two species. Tadpoles of A. umbraculata are characterised by having four labial tooth rows in the lower jaw, extensive tail mottling, a dorsal fin that originates well behind the body reaching a maximum depth at 50% of the tail length, and an average tail length of 1.9 times body length. Amietia vertebralis tadpoles on the other hand are characterised by having five or more labial tooth rows in the lower jaw, tail mottling that is confined to the upper half of the tail musculature, a dorsal fin that originates at the body-tail junction but retains a low profile, rising abruptly to reach a maximum depth at about 40% of the tail length, and an average tail length of 1.5 times body length. These four characters identify the two species without ambiguity. en_US
dc.language.iso en en_US
dc.publisher Zoological Society of Southern Africa en_US
dc.subject Amietia umbraculata en_US
dc.subject Amietia vertebralis en_US
dc.subject identification key en_US
dc.subject tadpole morphology en_US
dc.title Resolving the confusion: Amietia vertebralis and A. umbraculata tadpole morphology en_US
dc.type Article en_US


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