70.魚鰓部在顯微鏡檢查蟲體特徵如下圖所示魚鰓部在顯微鏡檢查蟲體特徵如下圖所示,其病原下列何者最適當?

【終於.......】評論
圖是三代蟲,為雌雄同體,胎生,於蟲體的中部常可見胎兒,胎兒體內又可見另一幼胚,呈三代同體,答案B(A)指環蟲參考:https://alchetron.com/Dactylogyrus(B)三代蟲參考:http://www.gyrodb.net/biology.php(C)異形吸蟲參考:https://www.researchgate.net/figure/a-Australoheros-facetus-a-natural-host-of-Centrocestus-formosanus-in-the-Pampulha_fig1_232256164(D)參考:https://www.researchgate.net/figure/Metacercariae-of-Diplostomum-spp-from-eye-lenses-of-different-fish-hosts-a_fig4_337959801