Preliminary Population Assessment of Psychoda alternata (Diptera: Psychodidae) in Soil Irrigated with Wastewater for Turf Cultivation

Ali, Arshad; Kok-Yokomi, Moh Leng

doi:10.2307/3495415

Cited by 7 publications

(4 citation statements)

References 3 publications

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“…High abundance of eutrophiles such as Psychodidae (Ali et al, 1991) and Culex mosquitoes among invertebrates that colonized mesocosms was expected, because they are commonly known to colonize habitats that are heavily polluted with organic matter. The addition of rabbit chow into mesocosms could have eutrophied the mesocosms turning them into suitable habitats for Culex and Psychodidae.…”

Section: Discussionmentioning

confidence: 99%

Interactive effects of dragonfly larvae and Bacillus thuringiensis var. israelensis on mosquito oviposition and survival

Mataba,

Clark,

Kweka

et al. 2023

Ecosphere

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The biological larvicide Bacillus thuringiensis var. israelensis (Bti) is used worldwide to control reproduction of mosquitoes in freshwater habitats. However, its impact on the ecosystem including nontarget species is often unclear. In addition, it is unknown how Bti larvicide may interact with local mosquito predators to shape oviposition site selection of mosquitoes. We used an outdoor mesocosm experiment to investigate the effects of realistic concentrations of the bio‐larvicide Bti on Culex oviposition, larval density, survivorship, and on densities of nontarget species. We also manipulated the complexity of the community by manipulating the presence of dragonfly larvae as a predator. Culex oviposition was unaffected by Bti but the larvicide effectively reduced larval density and survivorship in all treatments. Bti did not affect nontarget insects but stimulated phytoplankton density at the expense of lower herbivore density. The presence of dragonfly larvae in mesocosms did not reduce Culex oviposition or larval sensitivity to Bti. We conclude that Bti may effectively reduce the density and survivorship of Culex quinquefasciatus mosquitoes in this part of East Africa, but possibly at the cost of higher phytoplankton densities. Bti‐treated mesocosms were not more or less attractive for mosquitoes, suggesting that its application would not alter their oviposition behavior in the field.

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Section: Discussionmentioning

confidence: 99%

Interactive effects of dragonfly larvae and Bacillus thuringiensis var. israelensis on mosquito oviposition and survival

Mataba,

Clark,

Kweka

et al. 2023

Ecosphere

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“…larvae grazing, movement and making small diameter canals could be the main factor of clogging resistance and flow rate stabilization. The impact of the channels and cavities on the decrease in the resistance of the clogging layer was noted by Peter-Varbanets et al [43] The important role in clogging prevention by biological filter beds biofilm grazing was noted by Ali et al [44] The influence of predation on the performance of filters was also noted by other authors, for example, Derlon et al [45] Although the flagellates were not counted, during microscopic examination the low number of this group of organisms was observed, which could be explained by low organic compounds loading. [29] Autotrophic (phototrophic) organisms were not observed because they did not exist in the filter biomass due to the lack of light.…”

Section: Metazoa and Filamentous Micro-organismsmentioning

confidence: 94%

Protozoa and metazoa relations to technological conditions of non-woven textile filters for wastewater treatment

Spychała

Sowińska

Starzyk

et al. 2015

Environmental Technology

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The objective of this study was a preliminary identification of basic groups of micro-organisms in the cross-sectional profile of geotextile filters for septic tank effluent (STE) treatment and their relations to technological conditions. Reactors with textile filters treating wastewater were investigated on a semi-technical scale. Filters were vertically situated and STE was filtered through them under hydrostatic pressure at a wastewater surface height of 7-20 cm. Filters were made of four layers of non-woven TS 20 geotextile of 0.9 mm thickness. Various groups of organisms were observed; the most abundant group comprised free-swimming and crawling ciliates, less abundant were stalked ciliates and the least numerous were nematodes. The individual counts of all groups of micro-organisms investigated during the study were variable according to time and space. The high abundance of Opercularia, a commonly observed genus of stalked ciliates, was related to the high efficiency of wastewater treatment and dissolved oxygen concentration of about 1.0 g/m3. Numbers of free-swimming and crawling ciliates had a tendency to decrease in relation to the depth of filter cross-sectional profile. The variability in counts of particular groups of organisms could be related to the local stress conditions. No correlation between identified organism count and total mass concentration in the cross-sectional filter profile was found.

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“…This is likely due to eggs being laid on the soil surface. The larvae and pupae usually stay in the top 2.5 cm of soil; however, they burrow deeper when the soil surface lacks sufficient organic material (Ali et al 1991). The drain fly larvae must stay towards the top of the soil to breathe (Fair 1934).…”

Section: Larvaementioning

confidence: 99%

“…The drain fly larvae must stay towards the top of the soil to breathe (Fair 1934). In addition, a positive correlation has been found between the abundance of organic material at the soil surface and the number of larvae at the surface, suggesting that the larvae may congregate near food sources (Ali et al 1991). Although larvae are commonly found in the top centimeter of waterlogged soil, they can survive deeper in other materials, such as sewage filter beds, likely due to a higher number of trapped air bubbles (Ali et al 1991).…”

Section: Larvaementioning

confidence: 99%

Drain Fly Psychoda spp. (Insecta: Diptera: Psychodidae)

Griffith

Gillett-Kaufman

2018

EDIS

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Preliminary Population Assessment of Psychoda alternata (Diptera: Psychodidae) in Soil Irrigated with Wastewater for Turf Cultivation

Cited by 7 publications

References 3 publications

Interactive effects of dragonfly larvae and Bacillus thuringiensis var. israelensis on mosquito oviposition and survival

Interactive effects of dragonfly larvae and Bacillus thuringiensis var. israelensis on mosquito oviposition and survival

Protozoa and metazoa relations to technological conditions of non-woven textile filters for wastewater treatment

Drain Fly Psychoda spp. (Insecta: Diptera: Psychodidae)

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