蟑螂消化道有複雜的微生物系統,並且可作為寄生蟲的轉運宿主,目前部分地區發現寄生蟲可透過蟑螂作為轉運宿主造成環境汙染以及人類疾病。本研究於2023年9月到2024年1月期間收集中部地區蟑螂,統計中部地區蟑螂品種並分析蟑螂腸道內寄生蟲相。共收集166隻蟑螂,將活力較好的蟑螂進行人工飼養繁殖,並收集其糞便進行檢查,共飼養25隻。捕獲的蟑螂進行腸道檢查,在解剖顯微鏡下取出蟑螂腸道。以蔗糖浮游法將磨碎的腸道進行蟲卵的濃縮,並在顯微鏡下觀察。結果顯示,直接檢查的141隻蟑螂腸道寄生蟲檢出的陽性率為8.51%(12/141),人工飼養組的25隻蟑螂,糞便寄生蟲檢出的陽性率為24%(6/25),寄生蟲的總陽性率為共10.24%(17/166)。蟑螂種類寄生蟲的陽性率分別為美洲大蠊28.2%(13/46)、德國小蠊5.12%(6/117)及澳洲大蠊0%(0/2)。檢出陽性的蟑螂中,蟯蟲(Blatticola blattae)感染率為61.1%(11/18)最為常見,其次則是犬蛔蟲(Toxocara canis)16.6%(3/18)以及鈎蟲(Hookworm)11.7%(2/17),檢出阿米巴原蟲(Ameoba)33.3%(6/18),但未進一步確認是否具有致病性。另外,有二隻美洲大蠊具有雙重感染現象。
The digestive tract of cockroaches possesses a complex microbial system and serves as a potential carrier for parasites, contributing to environmental contamination and human diseases. From September 2023 to January 2024 in Central Taiwan, we aimed to collect cockroaches, categorize their species, and analyze the prevalence of intestinal parasites. A total of 166 cockroaches were collected. Cockroaches with better vitality were selected for artificial breeding, and their feces were collected for examination. Twenty-five cockroaches were bred in captivity. The results revealed that out of the 141 cockroaches directly examined, the positivity rate of intestinal parasites was 8.51% (12/141). In the artificially bred group of 25 cockroaches, the positivity rate of fecal parasitic infections was 24% (6/25). The overall parasite detection rate was 10.24% (17/166). The detection rates of parasite infections varied among cockroach species, with P. americana having the highest rate at 28.2% (13/46), followed by B. germanica at 5.12% (6/117), and P. australasiae at 0% (0/2). Among the positively detected cockroaches, the most common parasite was the nematode Blatticola blattae, with an infection rate of 61.1% (11/18), followed by the Toxocara canis at 16.6% (3/18), and hookworms at 11.1% (2/18). Ameoba was detected in 33.3% (6/18) of cases, but further confirmation of pathogenicity was not conducted. Additionally, two Periplaneta americana exhibited mixed infection phenomena.