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The Grand Caddis hatch of JASM 2022: Trichoptera natural history observations at the Joint Aquatic Sciences Meeting in Grand Rapids, Michigan (USA)

October 17, 2022

In a stroke of good luck for aquatic scientists and insect enthusiasts, the May 2022 Joint Aquatic Sciences Meeting (JASM) in Grand Rapids, Michigan coincided with a spectacular hatch of hydropsychid caddisflies. To estimate density, we enumerated caddisflies on 12 polarized window panels on the western face of the DeVos Place, which faced the Grand River. We found an average of 57.8 caddisflies per 2.0 × 2.3 m window panel (density of 12.6 caddisflies m−2). We observed American robins, swallows, sparrows, and jumping spiders preying and scavenging during the hatch. We also describe here our observations of a novel precopulatory behavior in the species Hydropsyche morosa, which we describe as a “head-to-tail” position. We discuss our natural history observations and share thoughts on how conferences can be a springboard for networking and collaborative science, natural history-focused or otherwise.

Citation Information

Publication Year 2022
Title The Grand Caddis hatch of JASM 2022: Trichoptera natural history observations at the Joint Aquatic Sciences Meeting in Grand Rapids, Michigan (USA)
DOI 10.1002/lob.10521
Authors Anya Metcalfe, Angelika L. Kurthen, Jared Freedman, Alexander B. Orfinger
Publication Type Article
Publication Subtype Journal Article
Series Title Limnology and Oceanography Bulletin
Index ID 70237627
Record Source USGS Publications Warehouse
USGS Organization Southwest Biological Science Center