If the maker of the body imprint has been correctly identified, then the trace represents one of the first records of ephemeropterans
Nevertheless, all taxa relied heavily on ephemeropterans
and may compete for resources at some level.
In addition, seven species (one pseudoscorption, one springtail, one bivalve, one ephemeropteran
, and three caddisflies) are removed from the state list and a synthesis of new distributional records is added for two endemic gastropods, one endemic coleopteran, and one endemic amphibian.
There were no significant differences in biomass between benthic taxa (chironomids, trichopterans, amphipods, hirudineans, oligochaetes, gastropods, bivalves, ephemeropterans
, and others) at the studied distances (one-way ANOVA, df = 6, MS = 1.
In general, ephemeropterans
were often the most important food item for the lower embeddedness levels, while chironomids were the most important item for the higher embeddedness level, no matter how abundant or rare these taxa were.
For example, helminth communities from lake sturgeon of Hudson Bay drainage (Choudhury and Dick, 1993) were dominated by Crepidostomum auriculatum and Spinitectus acipenseri Choudhury and Dick, while chironomids, ephemeropterans
(mainly Hexagenia sp.
1%) except mid-morning (0800 h), where brachycentrid larvae were not present Slimy Sculpin preyed on other dipterans, trichopterans, and ephemeropterans
throughout the day but at lower intensities.
High levels of zinc concentration in water are particularly toxic to many species of algae, crustaceans, and salmonids (Leland and Kuwabara, 1985) and have especially strong effects on macroinvertebrates such as molluscs, crustaceans, odonates, and ephemeropterans
(Gore and Bryant, 1986).
Ephemeroptera recorded their complete absence at St III and IV while comparatively more density of ephemeropterans
at St I (4.
A greater supply of fine detritus, expected in areas of low turbulence, would explain the association with lower sites of Oligochaeta, ephemeropterans
Caenis ludicra, Tricorythodes popayanicus, and Leptohyphes eximius collector gatherer taxa.
The main food resource of this species is adult ephemeropterans
, which are captured at the surface.
The bottle-traps sometimes caught other insects including bush crickets, cantharid beetles, ephemeropterans
, plecopterans, tipulids and various other dipterans.
and Trichopterans are not usual prey items for eastern pipistrelles; however, they dominate the diet when they are found.