Here is a section from the link below:
"Aquatic invertebrates have a wide range of sensitivity to rotenone with 96 hr LC50 values ranging from 0.002 to 100 ppm. A review of published laboratory toxicity tests showed the following general results: 1) there has been little rotenone toxicity work done on stream dwelling aquatic invertebrates, 2) there is a wide range of sensitivity both within and among taxonomic divisions, 3) benthic invertebrates appear less sensitive than planktonic invertebrates, 4) smaller invertebrates appear more sensitive than larger invertebrates, 5) aquatic invertebrates that use gills to extract aqueous oxygen appear more sensitive than invertebrates that acquire aqueous oxygen cutaneously, or through lamellae or spiracles, make use of respiratory pigments, or that can breathe atmospheric oxygen, 6) mortality was typically near 100% for rotenone formulation concentrations > 1 to 1.5 ppm for lotic invertebrates and > 3 ppm for many lentic or aquatic adult insect taxa (e.g., Heteroptera, Coleoptera) depending on the exposure time.
Keep in mind that this was a stream study which contains different species of invertebrates compared to typical lake/pond inhabitants. Lake and stream studies are cited in the report. Keep in mind that a rotenone treatment in a lake/pond results in a lot longer exposure to the chemical and a higher death rate of invertebrates compared to a stream treatment where the chemical gets rapidly flushed from the system after the treatment ends.
http://www.fws.gov/nevada/highlights/com..._Appendix_D.pdfGenerally recolonizaion is fairly rapid for winged invertebrates and slower for others such as crayfish, worms, amphipods, snails, clams, and some zooplankton.
