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[[Image:Horse Bot Fly.jpg|thumb|right|150px|Horse Bot Fly <small>(Image sourced from Dennis Ray, Wikimedia Commons)</small>]]
[[Image:Horse Bot Fly.jpg|thumb|right|150px|Horse Bot Fly <small>(Image sourced from Dennis Ray, Wikimedia Commons)</small>]]
{| cellpadding="10" cellspacing="0" border="1"
| Also known as:
| '''Bot Fly'''
<br>
'''''Bots'''''
|-
|}
==Introduction==
==Introduction==
The species ''Gasterophilus'', is more commonly referred to as the 'Bot fly.' It is an obligate parasite found on horses, donkeys, mules, zebras and elephants.
The species ''Gasterophilus'', is more commonly referred to as the 'Bot fly.' It is an obligate parasite found on horses, donkeys, mules, zebras and elephants.
==Life Cycle==
==Life Cycle==
Eggs are laid on the body of the host and either hatch spontaneously or are stimulated to hatch through an increase in warmth and moisture from the animal self-grooming. They are laid in different areas according to species;
''G. intestinalis'' eggs are laid in the hair of the shoulders and fore legs. ''G. nasalis'' eggs are laid in the intermandibular area. ''G. haemorrhoidalis'' eggs are laid around the lips
L1 are extremely small and motile, and begin development in the mouth, tongue and gums of the host. The development of L1 into L2 occurs on the pharynx. L2 then attaches to the base of the tongue and slowly migrates to the stomach.
L1 are extremely small and motile, and begin development in the mouth, tongue and gums of the host. The development of L1 into L2 occurs on the pharynx. L2 then attaches to the base of the tongue and slowly migrates to the stomach.
The larvae then penetrate the soil, where they transform into pupae and the flies hatch 30 to 40 days later.
The larvae then penetrate the soil, where they transform into pupae and the flies hatch 30 to 40 days later.
They are only found on pasture, as they do not survive well on stable bedding. The pupae are known to be sensitive to frost, moisture and flooding, so the environmental conditions present play a significant role in the success of the parasite.
They are only found on pasture, as they do not survive well on stable bedding. The pupae are known to be sensitive to frost, moisture and flooding, so the environmental conditions present play a significant role in the success of the parasite.
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