Assessment of Potential Indicator Species for Monitoring ...

2e. Information on historic abundance?
Species was introduced.
3a. Can nests or animal be easily located?
Males have a distinctive call which should be helpful in locating breeding sites.
3b. Can samples be easily collected?
Egg masses are large and should be quite visible.
4a. Captive rearing possible and well understood?
Yes, this species is often sold in pet stores (Green and Campbell 1984).
4b. Captive breeding possible and well understood?
Yes, this species is often sold in pet stores (Green and Campbell 1984).
5a. Is there historic information on contaminant burdens in the Fraser Basin?
No.
5b. Has this species been used in contaminant studies in other regions?
Yes (see Harfenist et al.1989 for a review of all contaminant studies prior to 1988
and Taylor et al. 1990; Strickler-Shaw and Taylor 1990; Lacki et al. 1992; and
Berrill et al. 1993).
5c. Have biological effects for this species been studied?
Yes (see Harfenist et al.1989 for a review of all contaminant studies prior to 1988).
SPOTTED FROG Rana pretiosa
1a. Present in the Fraser Basin year-round?
Yes.
1b. Broad distribution?
Yes.
1c. Common in Fraser Basin?
Yes (Orchard 1984).
1d. Proportion of diet within the aquatic food web.
Tadpoles feed on filamentous algae and leafy plants (Orchard 1984). Adults feed
on insects, pillbugs, spiders, and tadpoles and froglets of other species (Green and
Campbell 1984).
2a. Has the home range of the species been described?
No.
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