Download or read book Risk Assessment for New Zealand Mud Snail Potamopyrgus Antipodarum in Canada written by and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Science Advice from the Risk Assessment of New Zealand Mud Snail Potamopyrgus Antipodarum in Canada written by Becky C. Cudmore and published by . This book was released on 2011 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the CSAS Peer review of the Risk Assessment for New Zealand Mud Snail in Canadian Waters written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Invasion Ecology written by Julie L. Lockwood and published by John Wiley & Sons. This book was released on 2013-04-05 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition of Invasion Ecology provides a comprehensive and updated introduction to all aspects of biological invasion by non-native species. Highlighting important research findings associated with each stage of invasion, the book provides an overview of the invasion process from transportation patterns and causes of establishment success to ecological impacts, invader management, and post-invasion evolution. The authors have produced new chapters on predicting and preventing invasion, managing and eradicating invasive species, and invasion dynamics in a changing climate. Modern global trade and travel have led to unprecedented movement of non-native species by humans with unforeseen, interesting, and occasionally devastating consequences. Increasing recognition of the problems associated with invasion has led to a rapid growth in research into the dynamics of non-native species and their adverse effects on native biota and human economies. This book provides a synthesis of this fast growing field of research and is an essential text for undergraduate and graduate students in ecology and conservation management. Additional resources are available at www.wiley.com/go/invasionecology

Download or read book Interactions Between the Invasive New Zealand Mud Snail Potamopyrgus Antipodarum Baetid Mayflies and Fish Predators written by Chelsea Ann Cada and published by . This book was released on 2004 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigations of the Invasive New Zealand Mudsnail Potamopyrgus Antipodarum in Idaho written by Christopher A. James and published by . This book was released on 2007 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The New Zealand Mud Snail Potamopyrgus Antipodarum written by and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The New Zealand mud snail (Potamopyrgus antipodarum; NZMS) is among the most globally widespread aquatic invaders, colonizing at least 40 countries across 6 continents. NZMS have recently colonized rivers of the Laurentian Great Lakes region, where little is known about their impacts on the native communities of the ecosystems they invade. In chapter one, I present the results of a systematic review of 245 articles, and outline NZMS impacts, distribution, population dynamics, vectors of spread, and management. The invasion success of NZMS stems from their opportunistic traits allowing them to tolerate broad ranges of environmental conditions. However, optimal conditions for successful establishment are evident. NZMS can become exceptionally abundant and impact multiple facets of aquatic ecosystems, though populations can fluctuate seasonally and over longer time scales, likely due to environmental constraints. In chapter two, I tested the efficacy of three different chemical reagents for NZMS decontamination on recreational fishing gear and combined these results with results of a self-administered public survey gauging the level of willingness of individuals have to participate in a given NZMS decontamination technique. The greatest mortality of NZMS was caused by Formula 409, and participants of the survey revealed Formula 409 to be the chemical they'd be most willing to use. Chapter three outlines an investigation of the effects of NZMS on the diets and conditions of fish in a recently invaded stream, the Au Sable River (Michigan, USA). Trout consumed NZMS throughout the duration of the study, while sculpin minimally consumed NZMS. Of the 83 trout collected, 60% contained NZMS in their stomachs, Age 2 trout that consumed NZMS exhibited reduced condition relative to those that contained fewer NZMS. Lastly, chapter four consists of a study to characterize NZMS population dynamics and their effects on native benthic invertebrates in the Au Sable River. NZMS populations exhibited pronounced seasonality with peak densities typically occurring during the summer and autumn of each year. NZMS numerically dominated the benthic community and were associated with differences in the overall benthic community composition. The results of these studies highlight how NZMS can affect native communities and higher consumers in rivers of the Great Lakes region and contribute to a more robust understanding of the global NZMS invasion, such that undesired impacts can be minimized or averted.

Download or read book Impacts of the Invasive New Zealand Mudsnail Potamopyrgus Antipodarum as Leaf Litter Decomposers written by Mara Alicia Evans and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The introduction and establishment of non-indigenous invasive species (NIS) is a persistent global phenomenon that jeopardizes biodiversity and ecosystem processes in a large number of ecosystems. Ecologists and ecosystem managers continue to assess invasion strategies and the effect of NIS on ecosystem processes. This dissertation examines the state of knowledge of the New Zealand mudsnail (Potamopyrgus antipodarum Gastropoda: Hydrobiidae) invasions in lotic habitats. I begin with a review of the known and expected impacts of the mudsnail invasion, and use a food web framework to examine review how mudsnails affect trophic interactions within and across ecosystems. In the subsequent chapter I tested if New Zealand mudsnails accelerate the rate of leaf litter decomposition, and examined how mudsnail density affects leaf litter decomposition. Bags containing air-dried White Alder (Alnus rhombifolia) leaves were submerged in an invaded creek, and leaf mass loss and invertebrate recruitment were measured over 28 days. Leaf litter that was exposed to adult mudsnails lost 30% of its mass over 28 days, but treatments where adult mudsnails were excluded lost only 15% of leaf litter mass. In a second experiment we manipulated mudsnail densities within leaf litter bags. Increasing mudsnail densities also resulted in faster rates of litter decomposition. In the last chapter I assess how mudsnails affect leaf litter decomposition with increasing resource diversity. Bags containing air-dried A. rhombifolia, cottonwood (Populus fremontii) and valley oak (Quercus lobata), in one, two and three species combinations were deployed in an invaded and an uninvaded stream. I found that regardless of leaf litter diversity cottonwood decays at a faster rate than alder and valley oak, respectively and mudsnails do not accelerate leaf litter decomposition. I also found that in streams invaded with mudsnails, macroinvertebrate diversity is highest in high diversity (three species) leaf litter packs. This research I present here illustrates the complex role that an invasive generalist consumer can play in aquatic habitats.

Download or read book Stop the Invasion written by and published by . This book was released on 2011 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Survey for Potamopyrgus Antipodarum New Zealand Mudsnail in Southern Budd Inlet Thurston County Washington written by Edward J. Johannes and published by . This book was released on 2011 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canadian Journal of Zoology written by and published by . This book was released on 2013 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Leaf Litter Species on Invasive New Zealand Mud Snail Potamopyrgus Antipodarum Growth Rates and Detection Using Edna written by and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The New Zealand mud snail (NZMS) is an invasive species in the Laurentian Great Lakes region where populations have existed in the Great Lakes since at least 1991, with recent secondary invasions into Michigan rivers. Factors that influence growth rates of populations and individuals have yet to be determined. As herbivore-detritivores, the species of leaves NZMS consume could affect growth rates and, ultimately, their success as invaders. I conducted two experiments to evaluate the effects of different litter species on NZMS individual and population growth rates. We found significantly different individual growth rates among litter species, but found no differences in population growth among species. Additionally, I aimed to develop an environmental DNA sampling method, that could easily be followed by citizen scientists, to track invasive populations of NZMS in Michigan. The results of this research can help provide powerful tools to aid in invasive species detection and management.

Download or read book Tolerance of the Invasive New Zealand Mud Snail to Various Decontamination Procedures written by and published by . This book was released on 2015 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: In an attempt to stop the spread of invasive species, state governments have established decontamination procedures for use on contaminated equipment. However, different species can tolerate various procedures depending on their morphology and physiology. The New Zealand mud snail (Potamopyrgus antipodarum) is invasive to the United States and may alter the food web of streams due to the snail's high reproductive ability, causing potential problems for native trout populations and local economies. We collected mud snails from the recently invaded Black Earth Creek, WI and tested their tolerance to decontamination protocols being considered by the Wisconsin Department of Natural Resources. Treatments included immersion in bleach (200 & 400 ppm), salt (35 ppt), full strength Formula 409, and the standard disinfectant Virkon (2.0%). We also tested effectiveness of spraying vs. immersion of Formula 409 and interference of mud with the cleaning procedure. Snails remained viable after immersion for up to 30 minutes in bleach and salt baths but exposure in Formula 409 baths killed all snails after 10 minutes. The effectiveness of spraying was more variable than immersion. However the percentage mortality in both techniques was significantly decreased by the presence of mud. These results provide a scientific basis for future invasive species management decisions.

Download or read book Impacts of the Invasive New Zealand Mud Snail in Aquatic Food Webs written by Valance Elisabeth Furth Brenneis and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological invasions have become increasingly common in our globalized society. An important goal of invasion research is to understand how the successful establishment of invasive species can both affect and be affected by the diversity of recipient communities. In chapter one, I introduce my study system and several important concepts in invasion ecology that are addressed by this dissertation. In chapter two, I use the framework of the "invasion paradox" to examine the relationship between the establishment of high densities of the introduced New Zealand mud snail (Potamopyrgus antipodarum) and native community diversity and structure across a range of aquatic systems. Within a highly invaded estuarine system, I examine interactions between this snail and native consumers to better understand the competitive impacts of this species (chapter three). Finally in chapter four, I address the direct and indirect interactions between this snail, predators, and their native prey. Across multiple regions, the highest densities of P. antipodarum were found in systems with lower diversity and density of native invertebrates, however within river systems, there was no correlation between the density of mud snails and native diversity or density. There was no evidence for a negative impact of P. antipodarum on a native estuarine species that overlaps with mud snails in resource use. However, there was evidence for both direct trophic interactions between P. antipodarum and native predators, and indirect effects, in the form of asymmetrical apparent competition with native prey. Indirect effects such as these are less frequently studied but can be important in structuring communities, and demonstrate the complexity of determining the impact of a given invader. Like many successful invasive species, Potamopyrgus antipodarum are tolerant of a wide-range of environmental conditions, allowing them to invade many different habitat types. It is likely that the factors influencing both the success and impact of P. antipodarum differ between these types of communities and further research into the long-term, multi-trophic effects of this introduced species is important.

Download or read book Determining the Optimal Substrate for the Invasive New Zealand Mud Snail Potamopyrgus Antipodarum written by Sally Ghannam and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The New Zealand mud snail (Potamopyrgus antipodarum) is an aquatic invasive species that has been found in many countries and six continents. P. antipodarum can reproduce at a high rate, which leads to a high population growth rate and successful spread of the snail. This could negatively impact ecosystems. The purpose of this work was to determine if certain habitats in streams are better for the snails than others. In this experiment, snails were taken from a population in Spring Creek in Centre County, PA. The snails were grown for eight weeks on four different diets, including leaf litter, woody debris, rocks, and a Spirulina algae powder, which was the control. The size of each snail was measured at the beginning and end of the experiment to determine the mean growth rate. There was a significant difference in growth rates between the different treatments. Snails that grew on leaf litter and woody debris showed higher snail growth rates in comparison to the control and rock treatments. This suggests that some diets are better than others for the mud snail, and that the energy input from outside the aquatic system may be very important in the success of this invader.

Download or read book A Social and Biological Evaluation of New Zealand Mudsnail Invasion in Michigan Rivers written by Samantha Nicole Tank and published by . This book was released on 2020 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: New Zealand mudsnails (Potamopyrgus antipodarum; NZMS) are a small gastropod native to New Zealand and a documented worldwide invader. Michigan rivers are in the early phase of invasion, as NZMS were first detected in 2015 in the Pere Marquette River. In the early invasion process, information on likely vectors and the distribution of the species are critical to developing a well-informed management plan. My primary goals for this thesis were to address these informational needs. In order to document the distribution of NZMS, I developed a sampling methodology and evaluated its effectiveness, as standard methods for lotic sampling NZMS have not been developed in the literature. I conducted a total of 227 surveys in 12 Michigan rivers between 2015 and 2018. Survey data were analyzed using an occupancy model, resulting in a per survey detectability exceeding 96%. NZMS were detected in 5 Michigan rivers: the Pere Marquette, Boardman, Manistee, Au Sable, and Pine rivers. I estimate that more than 65 river kilometers within the Pere Marquette, Boardman, and Pine rivers are infested. The distribution of NZMS suggests discrete transport events, and that the introduction into Michigan likely occurred well before the first reported detection of this species. The literature indicates that the wading gear of anglers is the main vector of transport within and between rivers. I surveyed 308 anglers fishing the Pere Marquette River in 2016-2017. Even though 52% of anglers were aware of NZMS, there was not a significant difference in wader cleaning behaviors between anglers aware or unaware of NZMS, indicating that outreach efforts need to focus beyond the awareness stage. As no in-stream method of treatment is presently available, angler engagement should be a focus of future management efforts.

Download or read book Phenotypic Plasticity of the Introduced New Zealand Mud Snail Potamopyrgus Antipodarum Compared to Sympatric Native Snails written by Edward P. Levri and published by . This book was released on 2014 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phenotypic plasticity is likely to be important in determining the invasive potential of a species, especially if invasive species show greater plasticity or tolerance compared to sympatric native species. Here in two separate experiments we compare reaction norms in response to two environmental variables of two clones of the New Zealand mud snail, Potamopyrgus antipodarum, isolated from the United States, (one invasive and one not yet invasive) with those of two species of native snails that are sympatric with the invader, Fossaria bulimoides group and Physella gyrina group. We placed juvenile snails in environments with high and low conductivity (300 and 800 mS) in one experiment, and raised them at two different temperatures (16°C and 22°C) in a second experiment. Growth rate and mortality were measured over the course of 8 weeks. Mortality rates were higher in the native snails compared to P. antipodarum across all treatments, and variation in conductivity influenced mortality. In both experiments, reaction norms did not vary significantly between species. There was little evidence that the success of the introduced species is a result of greater phenotypic plasticity to these variables compared to the sympatric native species.