doi:

DOI: 10.3724/SP.J.1245.2011.00230

Asian Herpetological Research 2011/2:4 PP.230-233

A Dicephalic Caecilian Larva, Ichthyophis bannanicus (Amphibia: Gymnophiona: Ichthyophiidae), from Southeast Guangxi, China


Abstract:
We describe the first case of dicephalism in a caecilian larva, Ichthyophis bannanicus, from southeastern Guangxi, China. The two heads of the larva are united at the anterior one-third of the body. It is measured as: body mass 0.6 g, total length 42.4 mm, body width at middle 5.4 mm, head length 2.1 mm, head width 2.5 mm, snout length 1.5 mm, internarial distance 0.9 mm, and interorbital distance 1.7 mm. Compared to normal conspecific larvae, it is smaller except for the internarial distance, body mass and body width at midbody.

Key words:Gymnophiona, Ichthyophis bannanicus, dicephalism, larvae

ReleaseDate:2014-07-21 16:05:28



Andrew R. B., Johnson P. T. J. 2003. The complexity of deformed amphibians. Frontiers Ecol Environ, 1: 87-94

Belluomini H. E. 1959. Bicefalia em Xenodon merremii (Wagler, 1824) (Serpentes). Memórias do Instituto Butantan, 28: 85-89

Blaustein A. R., Belden L. K. 2003. Amphibian defenses against UV-B radiation. Evol Develop, 5: 189-197

Blaustein A. R., Johnson P. T. J. 2003. The complexity of deformed amphibians. Front Ecol Environ, 1(2): 87-94

Boone M. D., Bridges C. M. 2003. The problem of pesticides: Implications for amphibian populations. In Semlitsch R. D. (Ed.), Amphibian Conservation. Washington D. C., USA: Smithsonian Institution Press, 152-167

Burkhart J. G., Ankley G., Bell H., Carpenter H., Fort D., Gardiner D., Gardner H., Hale R., Helgen J. C., Jepson P., Johnson D., Lannoo M., Lee D., Lary J., Levey R., Magner J., Meteyer C., Shelby M. D., Lucier G. 2000. Strategies for assessing the implications of malformed frogs for environmental health. Environ Health Perspect, 108: 83-90

Da Cunha O. R. 1968. Um teratodimo derodimo em Jiboia (Constrictor constrictor (Linn., 1766)) (Ophidia; Boidae). Boletim Museu Paraense Emílio Goeldi série Zool, 67: 1-17

de Albuquerque N. R., Arruda W. S., Costa A. S., Galharte R. C. V. L., Vargas G. H., Moreno I. H. 2010. A dicephalic yellowanaconda snake, Eunectes notaeus (Serpentes: Boidae), from Southern Pantanal, Brazil. J Nat Hist, 44: 1989-1994

De Lema T. 1982. Descriçao de dois especimens bicefalos de Liophis miliaris (Linnaeus, 1758) (Serpentes, Colubridae). Iheringia, série Zool, 61: 1-17

De Lema T. 1994. Descriçao de um exemplar com bifurçao axial de Echinantera cyanopleura (Cope, 1885) (Serpentes, Colubridae, Xenodontinae). Acta Biol Leopoldensia, 16: 113-117

Diong C. H., Tan L. K. A., Leh C. M. U. 2003. Axial bifurcation in a bicephalic Chelonia mydas embryo. Chel Conserv Biol, 4: 725-727

Doyle R. 1998. Amphibians at risk. Sci Am, 279: 27

Dragoiu J., Busnitza T. 1927. Bicephal Bombinator igneus tadpole. Comptes Rendus de la Société Biol de Paris. 97: 1015-1017

Fei L., Hu S., Ye C., Huang Y. 2006. Fauna Sinica Amphibia. Beijing: Science Press

Fernández-Álvarez F. A., Recuero E., Martínez-Solano I., Buckley D. 2011. First record of bicephaly in Lissotriton boscai (Amphibia, Caudata, Salamandridae). NW J Zool, 7(1): 161-163

Gardiner D., Aristocle N., Felix G., Bruce B. 2003. Deformed frogs and environmental retinoids. Pure Appl Chem, 75: 2263-2273

Gower D. J., Wilkinson M. 2005. Conservation biology of caecilianamphibians: A review. Conserv Biol, 19: 45-55

Hayes T. B., Collins A., Lee M., Mendoza M., Noriega N., Stuart A. A., Vonk A. 2002a. Hermaphroditic, demasculinized frogs after exposure to the herbicide atrazine at low ecologically relevant doses, Proc Nat Acad Sci, 99: 5476-5480

Hayes T. B., Haston K., Tsui M., Hoang A., Haeffele C., Vonk A. 2002b. Feminization of male frogs in the wild. Nature, 419: 895-896

Heasman W. F. 1933. The anatomy of a double-headed snake. J Anat Lond, 67: 331-345

Hosser R., Gibbons D. 2003. A bicephalic coastal Queensland carpet snake, Morelia spilota mcdowelii (Serpentes: Pythonidae). Herpetofauna, 33: 111

Johnson P. T. J., Lunde K. B., Ritchie E. G., Launer A. E. 1999. The effect of trematode infection on amphibian limb development and survivorship. Science, 284: 802-804

Johnson P. T. J., Lunde K. B., Haight R. W., Bowerman J., Blaustein A. R. 2001a. Ribeiroia ondatrae (Trematoda: Digenea) infection induces severe limb malformations in western toads (Bufo boreas). Can J Zool, 79: 370-79

Johnson P. T. J., Lunde K. B., Ritchie E. G. 2001b. Morphological abnormality patterns in a California amphibian community. Herpetologica, 57: 336-52

Johnson P. T. J., Lunde K. B., Thurman E. M., Ritchie E. G., Wray S. N., Sutherland D. R., Kapfer J. M., Frest T. J., Bowerman J., Blaustein A. R. 2002. Parasite (Ribeiroia ondatrae) infection linked to amphibian malformations in the western United States. Ecol Monogrs, 72: 151-168

Johnson P. T. J., Lunde K. B., Ritchie E. G., Launer A. E. 1999. The effect of trematode infection on amphibian limb development and survivorship. Science, 284: 802-804

Khaire A., Khaire N. 1984. Birth of a bicephalous snake. Hamadryad, 9: 7

Kupfer A., Müller H. 2004. On the taxonomy of ichthyophiid caecilians from southern Thailand: A reevaluation of theholotype of Ichthyophis supachaii Taylor, 1960 (Amphibia: Gymnophiona: Ichthyophiidae). Amphibi Reptil, 25: 87-97

Lebedinsky N. G. 1921. On a tadpole of bicephalous Rana temporaria L. Comptes Rendus de la Société Biologique de France, 85: 791-792

Li G., Meng S., Luo X., Wang H., Bei Y., Zhang B. 2010. A preliminary study of Ichthyophis bannanicus on its range, origin and distribution approach by the molecular genetics method. Acta Zool Sin, 35(2): 338-344

Lohs-Schardin M. 1982, Dicephalic-A Drosophila mutant affecting polarity in follicle organization and embryonic patterning. Roux's Arch Dev Biol, 191: 28-36

Loyed M. 1897. Sur un tétard de Rana temporaria bicéphale. Bull de la Société Biol de France, 22: 146-148

Maryan B. 2001. A note on bicephalic death adder. Herpetofauna, 31: 73

Mcallister C. T., Wallach V. 2006. Discovery of a dicephalic western diamondback rattlesnake, Crotalus atrox (Serpentes: Viperidae), from Texas, with a summary of dicephalism among members of the genus Crotalus. J Arkansas Acad Sci, 60: 67-73

Mitchell J. C., Fieg M. 1996. Agkistrodon contortrix mokasen (Northern copperhead) Bicephaly. Herpet Rev, 27: 202-203

Morell V. 1999. Frogs: Canaries in the hot zone? Science, 284: 729

Nishikawa K., Masafumi M., Imbun P.Y., Sudin A., Lakim M.B., Mohamed M. 2008. Field observation of egg brooding in the caecilian Caudacaecilia asplenia from Sabah, Malaysia (Amphibia: Gymnophiona: Ichthyophiidae). Raffles Bull Zool. 56: 205-208

Nussbaum R. A., Gans C. 1980. On the Ichthyophis (Amphibia: Gymnophiona) of Sri Lanka. Spolia Zeylanica. 35: 137-154

Oros J., Rodríguez J. L., Espinosa de los Monteros A., Rodríguez F., Herráez P., Fernández A. 1997. Tracheal malformation in a bicephalic Honduran milk snake (Lampropeltis hondurensis) and subsequent fatal Salmonella arizonae infection. J Zoo Wildl Med, 28: 331-335

Ouellet M., Bonin J., Rodrigue J., Des Granges J., Lair S. 1997. Hindlimb deformities (ectromelia, ectrodactyly) in free living anurans from agricultural habitats. Wildl Dis Assoc, 33: 95-104

Pan J., Liu C., Qian H. 1985. A report on Ichthyophis found in Guangdong Province, China. J South China Normal Univ (Nat Sci), 1(1): 111-113

Pereira R., Rocha S. 2004. Chioglossa lusitanica (Golden-striped Salamander): Dicephalic larva. Herpetol Bull, 87: 29-30

Pleticha P. 1968. Micro-anatomical analysis of congenital head duplication of a lizard (Lacerta agilis L.). Vestnik Ceskoslovenske Spole Cnosti Zool, 32: 232-236

Reeves M. K., Peter J., Christine L. D., Marcel H., Kimberly A. T. 2010. Multiple stressors and the cause of amphibian abnormalities. Ecol Monogr, 80: 423-440

Roy D. 2002. Amphibians as environmental sentinels. J Biosci, 27(3): 187-188

Sessions S. K., Ruth S. B. 1990. Explanation for naturally occurring supernumerary limbs in amphibians. J Exp Zool, 254: 38-47

Spadola F., Insacco G. 2009. Newborn dicephalic Podarcis sicula. Acta Herpetol, 4: 99-101

Sparling D. W., Linder G., Bishop C. A. 2000. Ecotoxicology of amphibians and reptiles. Pensacola, FL: Society of Environ Toxicol and Chem Press

Sparling D. W., Fellers G. M., Mcconnell L. L. 2001. Pesticides and amphibian population declines in California, USA. Environ Toxicol Chem, 20: 1591-1595

Vanni S., Nistri A. 1987. Brevi note su alcuni esemplari anomali conservati nella collezione erpetologica del Museo Zoologico “La Specola“ dell´Università di Firenze. Atti del Museo Civico di Storia Naturale (Grosseto), 11-12

Velo-Antón G., Buckley D., Drissi Daoudi A., Cordero Rivera A. 2007. Bicephaly in Salamandra salamandra larvae. Herpetol Bull, 101: 31-33

Wen Y. 1983. Habits of Ichthyophis glutinosusin in Guangxi, Acta Herpetol Sin. 2(2): 79-80.

Wen Y. 1998. The current status of Ichthyophis bannanicus Yang. Sichuan J Zool, 17(2): 54

Williams R. N., Bos D. H., Gopurenko D., De Woody J. A. 2008. Amphibian malformations and inbreeding. Boil Lett, 4: 549-552

Wu J., Staffenberg D. A., Mulliken J. B., Shanske A. L. 2002. Diprosopus: A unique case and review of the literature. Teratology, 6: 282-287

Xu S., Wang Y., Li X. 2004. Application and prospects of amphibian for environmental pollution biomonitoring. Chin J Appl Environ Biol, 10(6): 816-820 (In Chinese)

Yang D., Su C. 1976. Ichthyophis glutinosus found from Xishuangbanna of Yunnan. Acta Zool Sin, 22(1): 175

Yang D. 1984. The discovery and description of the new species Ichthyophis bannaica. Acta Herpetol Sin, 3(2): 73-75

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