As I
mentioned in last week’s blog post, competition for resources can lead to more
bugs in the drift as cohorts of individual species reach maturity – this is
what we call intraspecific competition (intra = within, and specific =
species). But competition between different species (interspecific
competition) is also quite common.
In this
week’s Short Shots video, a Green Drake nymph (Drunella grandis) is
feeding on a dead Baetis nymph it has found. Along comes a much larger
and brawnier Pteronarcys nymph who, after a short altercation, claims the
prize for itself. In this case, instead of the loser being cast into the drift,
it just sits nearby and sulks.
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