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Bot fly larva (Oestrus ovis)

Image Number: 21159A

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Caption:

Bot fly larva (Oestrus ovis). Adult sheep bot flies (Oestrus ovis) do not oviposit (eggs laid in the host by the adult female). Larvae hatch within the female fly; she deposits them in or near the host's nostrils. The larvae have special hooks to anchor in the nasal passages and frontal sinuses. Larvae feed on the mucosal tissue. The larvae remain in the sinuses for 8 to 10 months and then are sneezed out of the nostrils. Fully-grown larvae exit the nostrils and pupate in debris on the soil for 3 to 6 weeks or more, depending on temperature.

Keywords:

| 21159A 11.01.02 animal disease bot bot fly fly insect insect pest insects invertebrate invertebrates larva larvae mucous membrane nasal bot fly nasal passage nose bot fly Oestrus ovis parasite parasitism sheep bot fly SEM |

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