File:Mansonella streptocerca LifeCycle.gif
Mansonella_streptocerca_LifeCycle.gif (509 × 435 pixels, file size: 32 KB, MIME type: image/gif)
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DescriptionMansonella streptocerca LifeCycle.gif |
Filariasis Life cycle of Mansonella streptocerca During a blood meal, an infected midge (genus Culicoides) introduces third-stage filarial larvae onto the skin of the human host, where they penetrate into the bite wound. They develop into adults that reside in the dermis, most commonly less than 1 mm from the skin surface. The females measure approximately 27 mm in length. Their diameter is 50 μm at the level of the vulva (anteriorly) and ovaries (near the posterior end), and up to 85 μm at the mid-body. Males measure 50 μm in diameter. Adults produce unsheathed and non-periodic microfilariae, measuring 180 to 240 μm by 3 to 5 μm, which reside in the skin but can also reach the peripheral blood. A midge ingests the microfilariae during a blood meal. After ingestion, the microfilariae migrate from the midge's midgut through the hemocoel to the thoracic muscles. There the microfilariae develop into first-stage larvae and subsequently into third-stage larvae. The third-stage larvae migrate to the midge's proboscis and can infect another human when the midge takes another blood meal. |
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Source | http://www.dpd.cdc.gov/dpdx/images/ParasiteImages/A-F/Filariasis/M_streptocerca_LifeCycle.gif | ||||
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current | 14:04, 5 November 2008 | 509 × 435 (32 KB) | Lycaon (talk | contribs) | Watermark removed | |
21:10, 14 May 2006 | 509 × 435 (35 KB) | Patho (talk | contribs) | {{Information| |Description=Filariasis Life cycle of Mansonella streptocerca During a blood meal, an infected midge (genus Culicoides) introduces third-stage filarial larvae onto the skin of the human host, where they penetrate into the bite wound. |
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