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The Invasion Biology of Invasive Mystery Snails Across a Fragmented Landscape in the Adirondacks.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	The Invasion Biology of Invasive Mystery Snails Across a Fragmented Landscape in the Adirondacks./
Author:	Abeyrathna, Wijesooriya Arachchilage Nimanthi Upeksha.
Description:	1 online resource (250 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 85-12, Section: B.
Contained By:	Dissertations Abstracts International85-12B.
Subject:	Biology. -
Online resource:	click for full text (PQDT)
ISBN:	9798382810683

The Invasion Biology of Invasive Mystery Snails Across a Fragmented Landscape in the Adirondacks.
Abeyrathna, Wijesooriya Arachchilage Nimanthi Upeksha.

The Invasion Biology of Invasive Mystery Snails Across a Fragmented Landscape in the Adirondacks. - 1 online resource (250 pages)

Source: Dissertations Abstracts International, Volume: 85-12, Section: B.

Thesis (Ph.D.)--Clarkson University, 2024.

Includes bibliographical references

Aquatic Invasive Species (AIS) are a significant threat to global freshwater biodiversity. I focused on two invasive aquatic snail species, Callinina georgiana and Cipangopaludina japonica, in the Adirondack region of northern New York - an important section of the New York Great Lakes Basin (NYGLB). Both snail species impact the ecosystems they settle in as they reach high population densities, which can threaten food availability and suitable habitat availability for other species in the same ecological niche. Competition for food and space can result in reduced population size, lower fecundity levels, and decreased growth among the species that share the ecosystem. Callinina georgiana also negatively impacts largemouth bass through the predation of the eggs of the largemouth bass. At the same time, both species are identified as intermediate hosts to trematode parasites, which could cause harm to both humans and wildlife. Field sampling was conducted over two years in 2021-2022, where snails were collected from the Raquette River and adjacent waterways, in addition to samples from the species' native range to compare population genetic patterns between native and invasive populations of C. georgiana and to elucidate the species' dispersal dynamics and genetic diversity.Once established, invasive species are difficult to manage or eradicate, and understanding the genetic diversity, connectivity patterns, and demographics of invasive populations is crucial for effective management. However, there is a limited understanding of these snails' invasion dynamics, including their impact, connectivity patterns, distribution, and genetic diversity. The overarching goal of my dissertation is to advance our understanding of the invasion biology of C. georgiana and C. japonica within their invasive range, primarily in the NYGLB. This involves examining morphogenetic relatedness, connectivity patterns, genetic diversity, parasitic fauna, and management strategies. I used a combination of genetic markers, a 710 bp fragment of the mitochondrial marker, cytochrome c oxidase I (COI) and a 351 bp fragment of the nuclear marker Histone-3 (H3)to elucidate the genetic diversity, connectivity patterns, and demographic dynamics of invasive and native populations. In addition, I attempted to generate microsatellites for one of the species. My study found no evidence of a cryptic species complex in the Adirondacks for either species, moderate levels of genetic structuring, mito-nuclear discordance, presence of unidentified endoparasites in C. japonica, and an effective chemical control that can be used for both species. My study is useful as it has generated a comprehensive data set that can be leveraged to develop future management options for both snails, in the wider Adirondacks region. Future directions of this study should involve using sequence data such as RAD-Seq which can generate tens of thousands of SNPs across millions of reads. My study also suggests that the limited public engagement about aquatic hitchhikers can be improved; collaborating with universities, museums, and high schools can yield compelling outreach initiatives, such as expert-assisted outdoor activities for identifying invasive species. By cultivating a stronger connection between the public and their environment, these initiatives encourage the utilization of online platforms like iMapInvasives, iNaturalist empowering individuals to report encountered invaders.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798382810683Subjects--Topical Terms:

599573
Biology.
Subjects--Index Terms:

AdirondacksIndex Terms--Genre/Form:

554714
Electronic books.

The Invasion Biology of Invasive Mystery Snails Across a Fragmented Landscape in the Adirondacks.
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