Tadpoles of Mannophryne trinitatis and M. olmonae (Anura: Aromobatidae): Further Description and Comparison

J.R. Downie, M. Nokhbatolfoghahai

Abstract


Mannophryne trinitatis and M. olmonae (Anura: Aromobatidae) are endemic to Trinidad and to Tobago, respectively. Previous descriptions have shown that tadpoles of these two species are very similar to one another. We examined a wide range of sizes and stages of tadpoles from one location in Tobago and three locations in Trinidad. Although some variability was found (in dentition, for example), no character alone could be used to distinguish any of the three Trinidad populations, and the Tobago specimens showed overlapping features. The only characters that appeared useful in distinguishing M. trinitatis and M. olmonae were pigmentation of the tail and origin of the dorsal fin. However, caution is recommended in identifying these species since tail characteristics vary.


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References


Altig, R. and McDiarmid, R.W. 1999. Bodyplan: development and morphology. p. 24-51. In R.W. McDiarmid and R. Altig eds. Tadpoles: the Biology of Anuran Larvae. Chicago: University of Chicago Press. 458p.

Cummins, C.P. and Swan, M.J.S. 1995. Variation in reproductive characteristics of the stream frog Colostethus trinitatis on the island of Trinidad. Journal of Tropical Ecology, 11: 603-618.

Downie, J.R., Livingstone, S.R. and Cormack, J.R. 2001. Selection of tadpole deposition sites by male Trinidadian stream frogs, Mannophryne trinitatis (Dendrobatidae): an example of anti-predator behaviour. Herpetological Journal, 11: 91-100.

Frost, D.R. 2014. Amphibian Species of the World: an online reference. Version 6.0. American Museum of Natural History, New York, USA. [Online]. Available at http://research.amnh.org/herpetology/amphibia/index.html (Accessed 28/1/2014).

Gosner, K.L. 1960. A simplified table for staging anuran embryos and larvae with notes on identification. Herpetologica, 16: 183-190.

Jowers, M.J. and Downie, J.R. 2004. Distribution of Mannophryne trinitatis in the Central mountain range of Trinidad. Living World, Journal of The Trinidad and Tobago Field Naturalists’ Club, 2004: 17-19.

Jowers, M.J., Martinez-Solano, I., Cohen, B.L., Manzanilla, J. and Downie, J.R. 2011. Genetic differentiation in the Trinidad endemic Mannophryne trinitatis (Anura: Aromobatidae): Miocene vicariance, in situ diversification and lack of geographical structuring across the island. Journal of Zoological Systematics and Evolutionary Research, 49: 133-140.

Kenny, J.S. 1969. The Amphibia of Trinidad. Studies on the Fauna of Curaçao and Other Caribbean Islands, 108: 1-78.

Lehtinen, R.M. and Hailey, A. 2008. A description of the tadpole of Mannophryne olmonae (Anura: Aromobatidae). Caribbean Journal of Science, 44: 260-264.

Lehtinen, R.M., Wojtowicz, E.A. and Hailey, A. 2011. Male vocalizations, female discrimination and molecular phylogeny: multiple perspectives on the taxonomic status of a critically endangered Caribbean frog. Journal of Zoology, 283: 117-125.

Manzanilla, J., Jowers, M.J., La Marca, E. and Garcia-Par- is, M. 2007. Taxonomic reassessment of Mannophryne trinitatis (Anura: Dendrobatidae) with a description of a new species from Venezuela. Herpetological Journal, 17: 31-42.

Nokhbatolfoghahai, M. and Downie, J.R. 2005. Larval ce- ment gland of frogs: comparative development and morphology. Journal of Morphology, 263: 270-283.

Relyea, R.A. 2004. Fine-tuned phenotypes: tadpole plasticity under 16 combinations of predators and competitors. Ecology, 85: 172-179.

Viertel, B. and Richter, S. 1999. Anatomy: viscera and endocrines. p. 92-148. In R.W. McDiarmid and R. Altig eds. Tadpoles: the Biology of Anuran Larvae. Chicago: University of Chicago Press. 458p.


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