Frogs of Coorg: Limnonectes limnocharis
|Limnonectes limnocharis complex
(WG044, WG040 5606 5600 5601 WG023 WG024*)
We recognised three types of Limnonectes, based on differences in appearance and calls.
Types 1 and 2 appeared identical but made different calls. Because non-calling
individuals could not be distinguished the two types were classed together as
L.limnocharis. The two calls were never heard together, although at Site 4 they called
close to each other. Type 1 called at all sites except site 6, always close to the edge of the
lake. Elsewhere they were found in puddles. Type 2 called at sites 4 and 5, calling from
puddles in cattle hoof prints. Limnocharis frogs at Site 6 were not calling. Mean mass of
62 males of both types was 2.7g (+/- 1.1). Neither type appeared territorial and males
were observed calling in close proximity to each other. Pitfall trap data indicated that
Limnonectes (types 1 and 2) were equally common in coffee plantations and uncultivated
habitats. Type 3 Limnonectes, represented by two animals (WG023, WG044) found in
coffee plantation, were much larger than the other races (mass = 6g and 15.5g, SVL =
45mm and 56mm) and had almost no webbing on the hind feet. Its call was not heard.
The call of “typical” L. limnocharis has energy concentrated between 0.93 and 3.75 kHz with a dominant frequency at 1.44kHz and strong spectral sideband at 3.04kHz. Individual calls last about 0.07 seconds and contain 9-13 pulses, each lasting about 0.004 seconds.
Call of Limnocharis limnonectes
Pulses from call of L. limnocharis
Power spectrum of L. limnocha