Environmentally cued hatching in the bird-parasitic nest fly Philornis downsi

2018 ◽  
Vol 166 (9) ◽  
pp. 752-760 ◽  
Author(s):  
Roxanne Sage ◽  
Rebecca A. Boulton ◽  
Paola F. Lahuatte ◽  
Charlotte E. Causton ◽  
Richard Cloutier ◽  
...  
Keyword(s):  
Philornis Downsi ◽  
Environmentally Cued Hatching

Shifting microbiomes complement life stage transitions and diet of the bird parasite Philornis downsi from the Galapagos Islands

2021 ◽  
Author(s):  
Polpass Arul Jose ◽  
Michael Ben‐Yosef ◽  
Paola Lahuatte ◽  
Charlotte E. Causton ◽  
George E. Heimpel ◽  
...  
Keyword(s):  
Life Stage ◽  
Galapagos Islands ◽  
Galápagos Islands ◽  
Philornis Downsi ◽  
Bird Parasite

scholarly journals Behavioral responses of the invasive fly Philornis downsi to stimuli from bacteria and yeast in the laboratory and the field in the Galapagos Islands

2019 ◽  
Author(s):  
Boaz Yuval ◽  
Paola Lahuatte ◽  
Arul J. Polpass ◽  
Charlotte Causton ◽  
Edouard Jurkevitch ◽  
...  
Keyword(s):  
Integrated Management ◽  
Gut Bacteria ◽  
Growth Media ◽  
Proboscis Extension Response ◽  
Galapagos Archipelago ◽  
Philornis Downsi ◽  
Baited Traps ◽  
Proboscis Extension ◽  
Future Work ◽  
Bird Feces

AbstractPhilornis downsi (Diptera: Muscidae) is a nest parasitic fly that has invaded the Galapagos archipelago and exerts an onerous burden on populations of endemic land birds. As part of an ongoing effort to develop tools for the integrated management of this fly, our objective was to determine its long and short-range responses to bacterial and yeast cues associated with adult P. downsi. We hypothesized that the bacterial and yeast communities will elicit attraction at distance through volatiles, and appetitive responses upon contact. Accordingly, we amplified bacteria from guts of adult field-caught individuals and bird feces, and yeasts from fermenting papaya juice (a known attractant of P. downsi), on selective growth media, and assayed the response of flies to these microbes or their exudates. In the field, we baited traps with bacteria or yeast and monitored adult fly attraction. In the laboratory, we used the Proboscis Extension Response (PER) to determine the sensitivity of males and females to tarsal contact with bacteria or yeast. Long range trapping efforts yielded two female flies over 112 trap nights (one in extracts from bird faeces and one in extracts from gut bacteria from adult flies). In the laboratory, tarsal contact with bacterial stimuli from gut bacteria from adult flies elicited significantly more responses than did yeast stimuli. We discuss the significance of these findings in context with other studies in the field and identify targets for future work.

scholarly journals Behavioral Responses of the Invasive Fly Philornis downsi to Stimuli from Bacteria and Yeast in the Laboratory and the Field in the Galapagos Islands

Insects ◽  
2019 ◽  
Vol 10 (12) ◽  
pp. 431
Author(s):  
Boaz Yuval ◽  
Paola Lahuatte ◽  
Polpass Arul Jose ◽  
Charlotte E. Causton ◽  
Edouard Jurkevitch ◽  
...  
Keyword(s):  
Integrated Management ◽  
Growth Media ◽  
Proboscis Extension Response ◽  
Galapagos Archipelago ◽  
Philornis Downsi ◽  
Baited Traps ◽  
Proboscis Extension ◽  
Males And Females ◽  
Future Work ◽  
Bird Feces

Philornis downsi Dodge and Aitken (Diptera: Muscidae) is an avian parasitic fly that has invaded the Galapagos archipelago and exerts an onerous burden on populations of endemic land birds. As part of an ongoing effort to develop tools for the integrated management of this fly, our objective was to determine its long- and short-range responses to bacterial and fungal cues associated with adult P. downsi. We hypothesized that the bacterial and fungal communities would elicit attraction at distance through volatiles, and appetitive responses upon contact. Accordingly, we amplified bacteria from guts of adult field-caught flies and from bird feces, and yeasts from fermenting papaya juice (a known attractant of P. downsi), on selective growth media, and assayed the response of flies to these microbes or their exudates. In the field, we baited traps with bacteria or yeast and monitored adult fly attraction. In the laboratory, we used the proboscis extension response (PER) to determine the sensitivity of males and females to tarsal contact with bacteria or yeast. Long range trapping efforts yielded two female flies over 112 trap-nights (attracted by bacteria from bird feces and from the gut of adult flies). In the laboratory, tarsal contact with stimuli from gut bacteria elicited significantly more responses than did yeast stimuli. We discuss the significance of these findings in context with other studies in the field and identify targets for future work.

scholarly journals Taking the Plunge: California Grunion Embryos Emerge Rapidly with Environmentally Cued Hatching

2011 ◽  
Vol 51 (1) ◽  
pp. 26-37 ◽  
Author(s):  
K. Martin ◽  
K. Bailey ◽  
C. Moravek ◽  
K. Carlson
Keyword(s):  
Environmentally Cued Hatching
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