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Why, oh why? HBBFDF #01

Why, oh why is this Bubble Blowing Fly doing it? It would appear there are a variety of explanations but nobody knows for sure...

Some suggestions from: diptera.info/articles.php?article_id=16

 

"a. Bubble-blowing may play a role in digestion:

i. Concentrating the fluid through evaporation:

ii. Aerating the fluid so that microbial fauna would be affected to the detriment of obligatory ;

iii. Heating up the fluid by exposure to sunshine.

b. Bubble-blowing is a symptom of a common fly illness.

c. Bubble blowing is a defensive move. Some insects use regurgitated food as a weapon. They try to spread the sticky, noxious liquid over the attacker.

d. Flies do blow bubbles to clean their mouthparts with this fluid, more or less to flush them, and after they are ready they ingest the fluid again.

e. Flies can use bubbling for cooling of overheated body ? thermoregulation."

 

Happy Friday!

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Uploaded on May 20, 2016
Taken on May 15, 2016