Main content

Temporal Dynamics of Freshwater Mussel Larvae

Show full item record

Title: Temporal Dynamics of Freshwater Mussel Larvae
Author: Smodis, Stephanie
Department: Department of Integrative Biology
Program: Integrative Biology
Advisor: Ackerman, Josef
Abstract: Unionids, which have parasitic glochidia larvae, likely compete for host fishes in multispecies mussel beds (> 20 species). The timing of glochidia abundance and the potential for partitioning of their ‘host-fish’ environment were examined. Glochidia were continuously sampled at 2-h intervals over ten 24-h days using a rosette sampler in the Sydenham River, Ontario from late August to September 2020. A total of 6104 glochidia from 17 unionid species were analyzed. A generalized linear mixed model indicated that the highest abundance of glochidia was at night, peaking at 20:00 (± 1 h) LST. Chi-square analysis revealed that many species were not uniformly distributed throughout the day, rather, their abundance aligned with reported diel activity patterns of their hosts. Glochidia abundance peaked at different times in unionids that shared hosts, suggesting host partitioning. Results provide insight into the concept of host partitioning to reduce competition, which will aid in unionid conservation.
URI: https://hdl.handle.net/10214/26975
Date: 2022-05
Rights: Attribution 4.0 International


Files in this item

Files Size Format View
Smodis_Stephanie_202205_MSc.pdf 2.194Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record

Attribution 4.0 International Except where otherwise noted, this item's license is described as Attribution 4.0 International
The library is committed to ensuring that members of our user community with disabilities have equal access to our services and resources and that their dignity and independence is always respected. If you encounter a barrier and/or need an alternate format, please fill out our Library Print and Multimedia Alternate-Format Request Form. Contact us if you’d like to provide feedback: lib.a11y@uoguelph.ca  (email address)