Fozia TABASSUM,Muhammad RAIS,Maqsood ANWAR,et al.Abundance and Breeding of the Common Skittering Frog (Euphlyctis cyanophlyctis) and Bull Frog (Hoplobatrachus tigerinus) at Rawal Lake, Islamabad, Pakistan[J].Asian Herpetological Research(AHR),2011,2(4):245-250.[doi:10.3724/SP.J.1245.2011.00245]
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Abundance and Breeding of the Common Skittering Frog (Euphlyctis cyanophlyctis) and Bull Frog (Hoplobatrachus tigerinus) at Rawal Lake, Islamabad, Pakistan
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Asian Herpetological Research[ISSN:2095-0357/CN:51-1735/Q]

2011 VoI.2 No.4
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Original Article
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Abundance and Breeding of the Common Skittering Frog (Euphlyctis cyanophlyctis) and Bull Frog (Hoplobatrachus tigerinus) at Rawal Lake, Islamabad, Pakistan
Fozia TABASSUM Muhammad RAIS* Maqsood ANWAR Tariq MEHMOOD Iftikhar HUSSAIN and Shahid ALI KHAN
Department of Wildlife Management, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi 46300, Pakistan
Ranidae population status breeding habitat destruction
The population density and breeding of two frog species, i. e., the Skittering Frog (Euphlyctis cyanophlyctis) and the Bull Frog (Hoplobatrachus tigerinus) were studied at Rawal Lake, Islamabad, Pakistan, by using visual encounter method from September 2009 to August 2010. Mean population density for the two frogs was 1.55 ± 0.44 frogs per ha, with that for the Skittering Frog being 1.09 ± 0.33 frogs/ha and that of the Bull Frog 0.46 ± 0.11 frog/ha, respectively. It is concluded that both frog species are explosive breeders, i. e., their breeding activities were confined to the first showers of the monsoon season. The mean spawn weight of the Skittering Frog was 1.5 g with more than 1000 eggs in each spawn, while that of the Bull Frog was 0.26 g with less than 1000 eggs in a spawn. The spawning sites of the two species were investigated in detail. Generally, no threat to their populations was observed. However, the opening of the spillway of Rawal Dam following the torrential rain destroyed the breeding sites of the frogs. It is maintained that the event did not produce any significant impact on their populations and breeding as the two species were quite common.


Beveridge A. S. 1979. Babur-Nama. Lahore: Sang-e-Meel Publications
Blaustein A. R., Wake D. B., Sousa W. P. 1994. Amphibian declines: Judging stability, persistence, and susceptibility of populations to local and global extinction. Conser Biol, 8(1): 60–71
Campbell H. W., Chiristman S. P. 1998. Herpetological Communities, Wildlife Research Report 13. Washington, D. C.: U.S. Fish and Wildlife Service, 193–200
Dubois A. 1992. Notes surla classification ranidae (Amphibian Anoures). Bull Mens Soc Linn Lyon, 61(10): 305–352
Fellers G. M., Freel K. L. 1995. A standardized protocol for surveying aquatic amphibians. U. S. Dept of Interior, National Park Service Technical Report NPS/WRUC/NRTR-95-01, 117–172
Heyer W. R., Rand A. S., Cruz C. A., Peixoto O. L. 1988. Decimations, extinctions and colonization of frog populations in southeast Brazil and their evolutionary implications. Biotropica, 20: 230–235
Hussain S. D., Gilani T., Khan A. R., Anwar M., Bokhari R. 2002. Population of migratory and resident species at Rawal Lake, Islamabad. Indus J Plant Sci, 1(3): 283–286
Khan M. S. 1969. A normal table of Rana tigrina Daudin. Early development (Stages 1–27). Pak J Sci, 21: 36–50 ?
Khan M. S. 1973. Food of tiger frog Rana tigerina Daudin. Biology, 19: 93–107
Khan M. S. 1996. The oropharngeal morphology and feeding habits of tadpole of Tiger Frog Rana tigerina Daudin. Russ J Herpetol, 2: 163–171
Khan M. S. 2006. Amphibians, Chapter 3: Toads and Frogs. Amphibians and Reptiles of Pakistan. Malabar, Florida: Krieger Publishing Company, 42–67
Knapp R. A., Matthews K. R. 2000. Non-native fish introductions and the decline of the mountain yellow-legged frog from within protected areas. Conser Biol, 14: 428–438
McCallum M. L. 2007. Amphibian decline or extinction? Current declines dwarf background extinction rate. J Herpetol, 41(3): 483–491
Molur S. 2008. South Asian amphibians: Taxonomy, diversity and conservation status. Int Zool Yearbook. 42(1): 143–157
Pakistan Environmental Protection Agency (PEPA). 2004. Report on Rawal Lake catchment area monitoring operation. Isla-mabad: Pakistan Environmental Protection Agency, Ministry of Environment
Rombough C. J., Hayes M. P. 2007. Rana boylii (Foothill Yellow-legged Frog) Reproduction. Herpetol Rev, 38: 70–71
Sluys M. V., Rocha C. F. D., Souza M. B. 2001. Diet, reproduction, and density of the Leptodactylid Litter Frog Zachaenus parvulus in an Atlantic rain forest of southeastern Brazil. J Herpetol, 35 (2): 322–325
Yousaf S., Mahmood T., Rais M., Qureshi I. Z. 2010. Population variation and food habits of ranid frogs in the rice-based cropping system in Gujranwala region, Pakistan. Asian Herpetol Res. 1(2): 123–130
Wells K. D. 2007. Mating systems and sexual selection in anurans. In Wells K. D. (Ed.), The ecology and behavior of amphibians. Chicago, Illinois, USA: University of Chicago Press, 338–402


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