Four species of insectivore
bats were recorded, with relative abundance of 5.
Zooplanktivores showed high biomass in all sampling sites, except in the NL1 lagoon, where the insectivores
exhibited higher weight.
Although we did not measure availability of food, the limited number of insectivores
in tamarisk in our study may indicate lower habitat-quality and less food resources, balanced by reduced competition.
I examined prey use by the benthic insectivore
orangethroat darter (Etheostoma spectabile) in a midwestern (USA) riffle-pool stream.
They are insectivores
, but eat a variety of items in the wild such as frogs and toads, nestlings of ground-dwelling birds, and eggs.
We observed a dramatic shift from populations dominated by omnivores/herbivores to populations dominated by insectivores
in sites progressively more downstream.
The feeding category assigned to each species was determined according to the food most often eaten and literature data: insectivores
, frugivores, nectarivores, carnivores, granivores, omnivores, granivore-insectivores
(mixed diet with a higher proportion of seed), insectivore
-frugivores (mixed diet with a higher proportion of insects), granivore-insectivore
-frugivores (mixed diet), carnivore-insectivore
-frugivores (mixed diet) and carnivore-insectivores
(mixed diet with a higher proportion of small vertebrates).
Additionally, 90% (n = 15) of all animal consumers are insectivores
(Table 2), reflecting the strong relationship between prey size and mandible size in insectivores
In 19,925 trap-nights, we captured 1295 individuals of 11 species of rodents and insectivores
at 18 wetland sites (Table I).
These often-abundant insectivores
might be expected to have large effects on the food web under certain circumstances.
Foraging sites were significant only because aerial insectivores
had lower fecundity than other groups (see Table 5); all other groups did not differ from each other (P [greater than] 0.
carnivores, frugivores, hematophagous, insectivores
and nectarivores (Gardner, 1977; Kalko et al.