Jog’s Night Frog
Species Description: Biju, S.D., Van Bocxlaer, I., Mahony, S., Dinesh, K.P., Radhakrishnan, C., Zachariah, A., Giri, V., and Bossuyt, F. (2011) A taxonomic review of the Night Frog genus Nyctibatrachus Boulenger, 1882 in the Western Ghats, India (Anura: Nyctibatrachidae) with description of twelve new species. Zootaxa, 3029:1-96.
© 2012 K.P. Dinesh (1 of 1)
Dorsum is a uniform black color with light grey patches. A pair of faint brown, longitudinal dorsal bands extends from the back of the eyelids to the middle of the dorsum. Limbs are dorsally light grey, and forelimbs, hind limbs, fingers and toes have black cross-bands. Thighs have dark grey patches and feet and webbing are dark grey. Abdominal sides are uniform grey. The throat and femoral glands are reddish-brown. Black or bluish-black liver is externally visible on the ventral side through the skin (Biju et al. 2011).
In addition, to morphological distinctions, mitochondrial DNA analysis shows N. jog with 4.2% divergence from N. petraeus in uncorrected pairwise comparisons within Nyctibatrachus (Biju et al. 2011).
Distribution and Habitat
Life History, Abundance, Activity, and Special Behaviors
The female subsequently leaves the egg group and the male sits over the eggs. Both the female and male are present at the oviposition site during the day and night. The reason for both being present is unclear, but it is assumed that the adults are both present to hydrate the clutch, as the adults were regularly observed positioned directly on top of the egg groups. Nyctibatrachus jog showed no signs of aggressive or defensive behavior when the oviposition site was approached.
Eggs take 8-9 days to hatch and resulting tadpoles of length 8 mm are black. Complete metamorphosis into froglets is achieved by days 31-33. They are most active at night (Biju et al. 2011).
Trends and Threats
Possible reasons for amphibian decline
Habitat modification from deforestation, or logging related activities
Biju, S.D., Van Bocxlaer, I., Mahony, S., Dinesh, K.P., Radhakrishnan, C., Zachariah, A., Giri, V., and Bossuyt, F. (2011). ''A taxonomic review of the Night Frog genus Nyctibatrachus Boulenger, 1882 in the Western Ghats, India (Anura: Nyctibatrachidae) with description of twelve new species.'' Zootaxa, 3029, 1-96.
Written by Kandys Kim (kandyskim AT berkeley.edu), UC Berkeley
First submitted 2011-11-17
Edited by Michelle S. Koo (2011-11-23)
Species Account Citation: AmphibiaWeb 2011 Nyctibatrachus jog: Jog’s Night Frog <http://amphibiaweb.org/species/7715> University of California, Berkeley, CA, USA. Accessed May 29, 2020.
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Citation: AmphibiaWeb. 2020. <http://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 29 May 2020.
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