P. bicolor
Photo by Carlos Cabrera
Mick Bajcar
Phyllobates species are notoriously difficult to sex, particularly P. bicolor and terribilis both of which have females that can call.
P. bicolor
Photo by Carlos Cabrera
P. terribilis
Chris Miller (via Frognet) has noticed that the cloaca on females of this group is much larger than on the males. This certainly holds true of his P. bicolor (and presumably P. terribilis) and is very visible due to the colour contrast. Chris held back 45 P. bicolor tadpoles until the frogs were between 11 and 12 months old and found that, whilst not always true, it was right about 65% of the time. When coupled with fat deposit location and length of body it became accurate 87% of the time. |
