所屬科目:獸醫傳染病學
69.海水石斑魚,肉眼外觀與體表溼壓片檢查如下圖所示,下列何者最為正確? (A)Ichthyophthirius multifiliis infection (B)Cryptocaryon irritans infection (C)lymphocystis virus infection (D)Trichodina sp. infection
70.罹病變態期牛蛙,臨床症狀呈現持續死亡,已排除細菌感染,剖檢肉眼病變可見大量澄清腹水,脾臟組織切 片如下圖所示,正確診斷為何?
(A)adenovirus infection (B)lead poisoning (C)ranavirus infection (D)herpesvirus infection
71.罹病烏魚,臨床上出現急性死亡,剖檢肉眼病變與組織抹片(Liu's stain)如下圖所示,該魚最可能受到下列 何者感染?
(A)Lactococcus garvieae (B)Streptococcus agalactiae (C)Photobacterium damselae subsp. piscicida (D)Photobacterium damselae subsp. damselae
77.臺灣養殖海水魚,在下過大雨後出現魚群死亡率上升,死亡魚隻體表無明顯症狀,少數有體色變黑變瘦,剖 檢可見部分魚隻在各臟器有白色小結節(如圖),細菌分離結果得到兩端濃染、無運動性的革蘭氏陰性短桿 菌,最有可能為下列何者? (A)Photobacterium damselae spp. piscicida (B)Vibrio cholerae (C)Streptococcus iniae (D)Aeromonas salmonicida