Characterizing the gut microbiome of wild-caught and lab-reared larval sea lamprey under different feeding regimes
| dc.contributor.author | Montalvo-Rodriguez, Patricia Sofia | |
| dc.contributor.examiningcommittee | Docker, Margaret (Biological Sciences) | |
| dc.contributor.examiningcommittee | Wang, Feiyue (Environment & Geography) | |
| dc.contributor.supervisor | Loseto , Lisa | |
| dc.contributor.supervisor | Good, Sara V. | |
| dc.date.accessioned | 2024-09-16T02:47:02Z | |
| dc.date.available | 2024-09-16T02:47:02Z | |
| dc.date.issued | 2024-08-26 | |
| dc.date.submitted | 2024-08-26T21:26:33Z | en_US |
| dc.date.submitted | 2024-09-15T01:11:11Z | en_US |
| dc.degree.discipline | Environment and Geography | |
| dc.degree.level | Master of Science (M.Sc.) | |
| dc.description.abstract | Lampricide treatments are one of the most common population control methods for invasive larval sea lampreys in the Great Lakes. The success of current population control methods depends on obliterating larval cohorts. However, most testing of the efficacy of different population control methods are carried out on lab-reared larval sea lampreys. In aquaculture, the gut microbiome plays a key role in fitness, including determining how rearing conditions affect the host. This has been studied in many commercially popular fish, but research on the gut microbiome of larval sea lampreys and its role in host growth and development is limited. This is a disadvantage for studies aimed at developing population control methods that depend on lab- reared larvae having a similar physiological response to wild populations of larval sea lampreys. To help breach this research gap, we characterized and compared the gut microbiome of lab- grown (LG), wild-caught lab-reared (WCLR) and wild-caught (WC) larval sea lampreys. Our main findings are that there was a i) strong seasonal pressure driving diversity in the gut microbiome of WC and WCLR larvae; ii) strong influence of the collection site on the gut microbiome of WC larvae; iii) lower diversity of the gut microbiome of LG compared to WC and WCLR samples. Although, we did not detect a core microbiome among our samples, we found common predicted functional pathways among sample types that suggest there could be a microbial functional core. At the genus level, Cetobacterium was the most abundant taxon in WC and WCLR samples. LG samples had unique taxa at higher abundances but shared less abundant taxa with other sample types. Identifying the factors contributing to differences in the microbiome in WCLR or LG samples will inform the development of aquacultural approaches to rearing larval sea lamprey. | |
| dc.description.note | October 2024 | |
| dc.identifier.uri | http://hdl.handle.net/1993/38608 | |
| dc.language.iso | eng | |
| dc.subject | microbiome | |
| dc.subject | sea lamprey | |
| dc.subject | aquaculture | |
| dc.title | Characterizing the gut microbiome of wild-caught and lab-reared larval sea lamprey under different feeding regimes | |
| local.subject.manitoba | no | |
| project.funder.identifier | http://dx.doi.org/10.13039/100006788 | |
| project.funder.name | Great Lakes Fishery Commission |