Biology of the shore fly Scatella stagnalis in rockwool under greenhouse conditions

2001 ◽  
Vol 98 (3) ◽  
pp. 317-328 ◽  
Author(s):  
Irene Vanninen
Keyword(s):  
Shore Fly ◽  
Scatella Stagnalis

scholarly journals Hydrogen Peroxide for Insect and Algae Control in a Lettuce Hydroponic Environment

2018 ◽  
Vol 10 (8) ◽  
pp. 221
Author(s):  
Vanessa Meireles Caixeta ◽  
Adriano De Souza Pereira Da Mata ◽  
Carmen Rosa da Silva Curvêlo ◽  
Wagner De Souza Tavares ◽  
Luiz Leonardo Ferreira ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Block Design ◽  
Foam Cells ◽  
Lettuce Seed ◽  
Phenolic Foam ◽  
Fungus Gnats ◽  
The Face ◽  
Lettuce Seed Germination ◽  
Shore Fly ◽  
Scatella Stagnalis

Insects and algae demonstrate adaptability in hydroponic environments. Algae attract flies, Bradysia spp. (Diptera: Sciaridae) and Scatella stagnalis (Diptera: Ephydridae), called fungus gnats and shore fly, respectively. Flies feed on algae, damaging seedlings radicellae, and may transmit pathogens to lettuce plants. Little information on the management of flies and algae is known. A paradox in the face of the expansion of hydroponics. The objective was to evaluate the potential of hydrogen peroxide (H2O2) as an insecticide and algaecide agent. Entomopathogenic fungi were also evaluated as an alternative control to flies. The experiment was conducted in a commercial hydroponic system under a randomized complete block design with 5 treatments and 4 replicates. The treatments, sprayed on the phenolic foam plates, immediately after lettuce seed deposition, were: H2O2, Beauveria bassiana, Metarhizium anisopliae, Spinosyn and water, as control. The quality of the lettuce seedlings (cv. Brida), the presence of flies and algae evolution in the phenolic foam plates were recorded daily. H2O2 and Spinosyn affected lettuce seed germination, but were able to reduce adult flies on the phenolic foam cells. The highest number of larvae was observed with both fungi, and only water, compared to H2O2. No larvae were found in Spinosyn sprayed phenolic foam cells. However, lettuce seedlings from Spinosyn sprayed plates were those with lower fresh weight. H2O2 severely retained algae infestation in phenolic foam cells over a 15-day observation period. The present work demonstrates the potential that H2O2 can play as an insecticidal and algaecide agent in hydroponic environments.

scholarly journals Efficacy of Beauveria bassiana on Colonized Millet Seed as a Biopesticide for the Control of Shore Flies

HortScience ◽  
2005 ◽  
Vol 40 (5) ◽  
pp. 1384-1388 ◽  
Author(s):  
M.E. Stanghellini ◽  
Z.A. El-Hamalawi
Keyword(s):  
Beauveria Bassiana ◽  
Plant Pathogens ◽  
Initial Population ◽  
Greenhouse Crops ◽  
Soilborne Plant Pathogens ◽  
Final Population ◽  
Potting Medium ◽  
Millet Seed ◽  
Shore Fly ◽  
Scatella Stagnalis

Shore flies (Scatella stagnalis) have been implicated as an aerial vector of several soilborne plant pathogens of greenhouse crops. A strain of Beauveria bassiana (Bb), isolated from a shore fly cadaver, was evaluated as a biopesticide for the control of shore flies. Bb was grown on autoclaved millet seed for 2 weeks, air-dried at 24°C for 7 days and stored in paper bags. Dried Bb-colonized millet seeds were broadcast on the surface of pots containing potting medium naturally-infested with larvae and pupae or pots infested only with adult flies. Controls consisted of insect-infested pots amended with autoclaved millet seeds. Pots of the same treatment were placed in insect-proof screen cages. At daily intervals for 15 days, adult fly populations were recorded in each cage. In cages initially containing only larvae and pupae, adult fly populations in the control (no Bb) treatment reached a final population of 70 adults on day 15. In contrast only two adult flies were observed in the Bb-treatment. In cages containing only adult shore flies, the entire population was dead within 10 to 12 days in the Bb-treatment. In the absence of Bb, 65% of the initial population of adults was still alive on day 12.

Revision of the Shore-fly Genera Parahyadina Tonnoir and Malloch and New Zealand Hyadina Haliday (Diptera: Ephydridae)

Zootaxa ◽  
2019 ◽  
Vol 4623 (3) ◽  
pp. 401-440
Author(s):  
WAYNE N. MATHIS ◽  
TADEUSZ ZATWARNICKI
Keyword(s):  
New Species ◽  
New Zealand ◽  
Phylogenetic Position ◽  
Morphological Evidence ◽  
Monotypic Genus ◽  
Distribution Maps ◽  
Shore Fly ◽  
First Time

Two genera of the shore-fly tribe Hyadinini, Hyadina Haliday and Parahyadina Tonnoir & Malloch, are revised, and all species treated, save P. lacustris Tonnoir & Malloch, are described for the first time. The phylogenetic position of both genera within Hyadinini is presented along with confirming, morphological evidence. The New Zealand fauna of Hyadina is now limited to the single new species H. breva, and Parahyadina is expanded from being a monotypic genus based on P. lacustris to also include the following 9 endemic new species: P. angusta, P. atra, P. bifurcata, P. bulla, P. debilis, P. edmistoni, P. hennigi, P. irwini, and P. latistylis. For both genera, emphasis is given to structures of the male terminalia, which are fully illustrated. Detailed locality data and distribution maps for all species are provided, and structures of the male terminalia are fully illustrated. For perspective and to facilitate recognition of genera, the tribe Hyadinini is diagnosed and a key to genera from New Zealand is provided. 

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