Author: Michelle Renee SanfordPublisher:
ISBN:
Category : Anopheles
Languages : en
Pages : 292
Book Description
Effects of Enrichment on Mosquitoes and Associated Aquatic Invertebrates in a Constructed Treatment Wetland
Author: Michelle Renee SanfordPublisher:
ISBN:
Category : Anopheles
Languages : en
Pages : 292
Book Description
Journal of the American Mosquito Control Association
Author: Influence of Nutrients and Integrated Mosquito Management Tactics on Mosquitoes and Their Habitat Microbiomes
Author: Dagne Duguma DemissePublisher:
ISBN: 9781303711244
Category : Bacillus thuringiensis
Languages : en
Pages : 171
Book Description
Mosquito management in wetlands is complex partly because some of the wetland management operations are known to enhance mosquito production. I aimed to describe the effects of nutrients and integrated mosquito management strategies on mosquitoes produced in wetlands in the following three studies. First, we evaluated the growth characteristics of alkali bulrush (Schoenoplectus maritimus), an alternative aquatic plant of potential bioremediation importance, and its associated mosquito production across a gradient of nitrogen enrichment including the high ammonium nitrogen regimens typically found in constructed wetlands. Mosquito larvae abundance, dominated by the western encephalitis mosquito ( Culex tarsalis Coquillett), was significantly greater in enriched versus unenriched mesocosms. Alkali bulrush survived high nitrogen loadings, but its biomass was significantly suppressed at high (>50 mg/liter) ammonium nitrogen concentration in the water. Second, we characterized microbiota associated with C. tarsalis larvae, water column and epibionts of two (alkali and California) bulrushes using 16S rRNA gene sequences generated with Illumina sequencing platform. The diversity of microbiota in mosquitoes sampled from wetlands containing the two bulrushes did not differ appreciably, and was chiefly dominated by Thorsellia (Gammaproteobacteria ). The epibionts of the bulrushes and bacterioplankton were dominated by members of Actinobacteria, Bacteroidetes, Cyanobacteria, Proteobacteria and Verrucomicrobia. Overall, nearly 49% of the Bacteria taxa found in the mosquito gut were also found in the habitat, suggesting a strong Culex larvae-Bacteria interaction. Finally, we evaluated the effects of a one-time application of two rates of a key mosquito biopesticide, Bacillus thuringiensis subsp. israelensis (a granular form of VectoBac G) on native microbiota and physicochemical variables in the feeding zone of Culex larvae in experimental mesocosms. Beta diversity of Bacteria communities revealed that samples from low Bti and untreated control mesocosms were significantly separated from high Bti mesocosms and were dominated by unidentified OTU of Cyanobacteria, Cytophagales and Cyclobacteriaceae (Bacteroidetes), and Sphingomonas (Alphaproteobacteria ). Phytoplankton (chlorophyll a), sestonic particulates, nutrients, pH and other physicochemical variables in the water column were also significantly reduced in the high Bti mesocosms. Important implications of the results of these studies on integrated mosquito management in aquatic ecosystems are discussed.
Ecological Trends in Wastewater Constructed Wetlands
Author: David Alexander PopkoPublisher:
ISBN:
Category : Constructed wetlands
Languages : en
Pages : 310
Book Description
Suitability of a Constructed Treatment Wetland as Conservation Habitat and the Impact of the Arroyo Chub (Gila Orcutti) on the Invertebrate Community and Mosquito Oviposition
Author: Adena Mary WhyPublisher:
ISBN: 9781267731791
Category : Constructed wetlands
Languages : en
Pages : 125
Book Description
The ovipositional responses of female Culex tarsalis to semiochemicals produced by aquatic organisms in three aquatic guilds (predaceous insects, algivorous fish and predatory/larvivorous fish) were examined in laboratory choice assays. Previous binary choice trials have shown that female mosquitoes avoid laying eggs on water that contains fish exudates and will instead choose to oviposit on water without kairomones released by fish. Culex tarsalis was not deterred from ovipositing in cups containing semiochemicals from invertebrate predators and algivorous fish, but was deterred from ovipositing in cups containing arroyo chub semiochemicals.
Master's Theses Directories
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 356
Book Description
"Education, arts and social sciences, natural and technical sciences in the United States and Canada".
Invertebrates in Freshwater Wetlands
Author: Darold BatzerPublisher: Springer
ISBN: 3319249789
Category : Science
Languages : en
Pages : 647
Book Description
Wetlands are among the world’s most valuable and most threatened habitats, and in these crucially important ecosystems, the invertebrate fauna holds a focal position. Most of the biological diversity in wetlands is found within resident invertebrate assemblages, and those invertebrates are the primary trophic link between lower plants and higher vertebrates (e.g. amphibians, fish, and birds). As such, most scientists, managers, consultants, and students who work in the world’s wetlands should become better informed about the invertebrate components in their habitats of interest. Our book serves to fill this need by assembling the world’s most prominent ecologists working on freshwater wetland invertebrates, and having them provide authoritative perspectives on each the world’s most important freshwater wetland types. The initial chapter of the book provides a primer on freshwater wetland invertebrates, including how they are uniquely adapted for life in wetland environments and how they contribute to important ecological functions in wetland ecosystems. The next 15 chapters deal with invertebrates in the major wetlands across the globe (rock pools, alpine ponds, temperate temporary ponds, Mediterranean temporary ponds, turloughs, peatlands, permanent marshes, Great Lakes marshes, Everglades, springs, beaver ponds, temperate floodplains, neotropical floodplains, created wetlands, waterfowl marshes), each chapter written by groups of prominent scientists intimately knowledgeable about the individual wetland types. Each chapter reviews the relevant literature, provides a synthesis of the most important ecological controls on the resident invertebrate fauna, and highlights important conservation concerns. The final chapter synthesizes the 15 habitat-based chapters, providing a macroscopic perspective on natural variation of invertebrate assemblage structure across the world’s wetlands and a paradigm for understanding how global variation and environmental factors shape wetland invertebrate communities.
Evaluation of Mosquito Control Strategies in a Southern California Constructed Treatment Wetland
Author: Joshua Allen JianninoPublisher:
ISBN:
Category : Mosquitoes
Languages : en
Pages : 168
Book Description
The Ecology of Larval Mosquitoes
Author: George Wesley PeckPublisher:
ISBN:
Category : Culex quinquefasciatus
Languages : en
Pages : 362
Book Description
Dissertation Abstracts International
Author: Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 794
Book Description