Are larvae attracted to skin secretions?
On average, we recovered 90.6% (± 14.2 SD) of the L3 used for this
experiment (1,630 of 1,800 L3). The proportion of L3 in the treatment
zone was best explained by L3 origin, scent type, and their interaction
(Table S4). More L3 (from both populations) were found in the treatment
zone than the control area (demonstrating attraction to the scent cue)
when skin secretions from range-core toads were used (Fig. 4, Table S5).
Conversely, when skin secretions from invasion-front toads were used as
the treatment scent, L3 from range-core populations were attracted
whereas L3 from invasion-front populations were not (Fig. 4, Table S5).