Table 1. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Names and dates are hyperlinked to their relevant specimen records. The list of references for all nonindigenous occurrences of Cyclops abyssorum sibiricus are found here.
Table last updated 5/24/2026
† Populations may not be currently present.
References: (click for full references)
Connolly, J. K., Marshall, C. C., Hudson, P. L., Watkins, J. M., Scofield, A. E., and Rudstam, L. G. 2022. Reevaluation of the genus
Cyclops Müller, 1776 (Cyclopoida: Cyclopidae) in the Laurentian Great Lakes basin: first report of the Palearctic species
Cyclops divergens Lindberg, 1936 from Lake Erie and documentation of
Cyclops sibiricus Lindberg, 1949 in the St. Marys River. Zootaxa, 5182(2), 183–195.
Makino, W., Yoshida, T., Sakano, H., and Ban, S. 2003. Stay cool: habitat selection of a cyclopoid copepod in a north temperate oligotrophic lake. Freshwater Biology, 48, 1551–1562.
U.S. Fish and Wildlife Service (USFWS). 2022. Cyclops strenuus sibiricus (a copepod, no common name) Ecological Risk Screening Summary. Web Version.
This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.
