Post Archive:
2025
Chemical composition of incubation substrates and their effect on survival of cisco (Coregonus artedi) embryos
Coregonine Captive Broodstock Developed from Wild-Caught Juveniles: Dual Strategies to Mitigate Barotrauma-Induced Mortality
Lake Superior Bloater Reproductive Biology
Development of eDNA markers for Coregonids in the Great Lakes
Determining when and how Cisco and Lake Whitefish recruitment can be reliably indexed to support evaluation, restoration, and management
Contemporary distribution and abundance of larval cisco in Lake Michigan
Investigating past and future climate conditions of coregonine restoration habitats: A case study of Cisco in Saginaw Bay
Cisco (Coregonus artedi) was once one of the most abundant pelagic fishes in Lake Huron (Koelz 1929), supporting a large fishery in Saginaw Bay throughout the early 1900s (GLFC 2022, Rook et al. 2024). The population supporting this fishery, however, began to collapse...
The role of DNA methylation in morphological deformities in artificially reared cisco (Coregonus artedi)
We propose a pilot project to investigate the effects of artificial rearing on cisco DNA methylation. This project will build on an ongoing project funded in FY24 led by A. Honsey (“Effects of incubation temperature on survival, growth, morphology, and gene expression...
Impact of egg fatty acid signatures on embryo viability in wild and domesticated cisco
One of the major challenges in the aquaculture of bloater (Coregonus hoyi) and cisco (Coregonus artedi) is the low survival rate of larvae from hatchery-reared broodstock compared to wild broodstock. Percent eye-up of bloater eggs from parents fed different diets at...
Genetic Monitoring of Bloater Broodstock using a GTSeq (Genotypes by thousands sequencing) Panel
Hatchery production is a central component of coregonine restoration within the Great Lakes ecosystem, and active supplementation programs are currently underway in Lakes Ontario and Huron. As the development of coregonine broodstock lines and methods associated with...
Integrating historical records to compare historical and contemporary coregonine habitat use in the great lakes – Year 4
A methodology for the Gap Analysis (Box 2 of the Coregonine Restoration Template, or CRF; Bunnell et al. 2023) is published as a USGS Cooperator Publication. Our team has begun implementation of the Gap Methodology based on Joint Strategic Plan committee requests...
Describing historic Cisco population structure in Lake Michigan with scale samples from 1930-1974
The landscape of coregonine diversity in Lake Michigan has been vastly altered by more than a century of anthropogenic impacts. In addition to the extinction or extirpation of all but one deepwater cisco, shallow-water Cisco (Coregonus artedi) populations in Lake...
Development of a Novel Telemetry Tag Attachment Method for Understanding Coregonine Ecology, Movements, and Habitat Use
Acoustic telemetry is at the forefront of fisheries research and management in the Great Lakes, and the combination of the ever-expanding receiver network coupled with over 25,000 tagged fish across 53 species (since 2010) continues to provide a wealth of critical...
Implementation of Coregonine Population Viability Analysis within the Coregonine Restoration Framework – Year 4
The Coregonine Restoration Framework (CRF) provides an adaptive management structure to guide restoration of this suite of species in the Great Lakes Region. Initial steps in this effort established four science teams—Resolve Taxonomy, GAP Analysis, Population...
Hatchery production and research to support restoration of sutainable Coregonine populations in Lake Ontario and Lake Erie – Year 7
Coregonine species in the Great Lakes, such as Cisco and Bloaters, historically represented a substantial component of the forage base for native cold-water fish like Lake Trout and Atlantic Salmon. Extirpation or depletion of deepwater Bloater populations has left...
Do hardened shoreline habitats help or hurt? Quantifying the extent of coregonine spawning and egg incubation suitability on human-modified habitats in Lake Ontario
Conserving and restoring Cisco (Coregonus artedi) and Lake Whitefish (C. clupeaformis) populations is a management objective within individual Great Lakes and at the basin scale. Similar to other fishes of conservation concern, anthropogenic changes to spawning...
Continuing evaluation components of the Lake Huron Technical Committee’s Cisco reintroduction study for FY25
Cisco (Coregonus artedi) are functionally absent from the western main basin of Lake Huron and as such restoring Cisco “to a significant level” (DesJardine, 1995) remains an unmet objective for Lake Huron management agencies (Riley and Ebener, 2020). In 2007 the Lake...
Evaluation of sequential chemical marking of Oxytetracycline, Alizarin Red S, and Calcein in calcified structures of bloaters (Coregonus hoyi)
This project will investigate the unique chemical marking patterns produced within the otoliths, lower jaw, and ribs of bloaters after sequential immersions of Oxytetracycline (OTC), Alizarin Red S (ARS), and calcein. This project is fully aligned with the Coregonine...
Implementing science planning methods within the Coregonine Restoration Framework via expert knowledge elicitation and workshop facilitation – Year 2
The Coregonine Restoration Framework (Bunnell et al. 2023) includes a Planning Phase that is divided into four elements: (1) resolving coregonine taxonomy using genetics and ecology and delineating spatial units for conservation and restoration, (2) describing and...