有冇人遇過 TICK ?

Hong Kong Hiking Web: 討論組 Forum: 行山資料分類 Hiking Subtopics: 知識 General Knowledge: 有冇人遇過 TICK ?
   By 天邊孤雁 on Wednesday, April 14, 2004 - 11:51 am:  Edit

Has anybody ever suffered from the annoyance of ticks while hiking or wildcamp? Is it common to be seen in the country parks in HK?

I met it once in a certain village in NT, not on my body, but on a village dog's body. It's quite big. It sucked a lot of blood, and stuck to the body very tightly. It can cause tick-fever which can be fatal. If you unskilfully try to remove it by pulling it, it won't release the bite even it should cost its life. So, if you try to pull it by force, it will be torn at the neck, leaving its head with the jaw at your wound, and the worst is that when it is torn and you get some of its bodily fluid at your wound, it would cause other diseases. When I was visiting Burma, a Korean friend told me that once he got a tick on the body and it stuck there for 5 days sucking his blood, without loosing its grasp!

有沒有人在行山時或露營時見過一種叫tick的昆蟲?有沒有被咬過?在香港的郊野公園普遍嗎?我只曾在新界某條村見過一次,是第一次,在一隻狗身上。聽說這些tick會緊緊咬著別人身體不放。據說tick會引起致命的tick fever,以及其他傳染病。

   By 天邊孤雁 on Wednesday, April 21, 2004 - 1:03 pm:  Edit

I've eventually found it. This kind of bug is called '蜱'(音皮)/'壁蝨' in Chinese, and is very common in HK, as well as in any other places in the world. The larva is quite tiny, but after sucking enough blood, it becomes very large. Please have a read:

蜱 (TICK)

宿主包括哺乳類、鳥類、爬蟲類和兩棲類動物,大多數都吸食血液。
本地常見的品種:

血紅扇頭蜱(Rhipicephalus sanguineous) (黃狗蜱)

主要寄生於狗和其它家畜,也侵襲人
可傳播寇熱(Q fever)和南歐斑疹熱(boutonneuse fever)等病

微小牛蜱(Boophilus microplus)

主要寄生於牛和其它家畜,有時也會襲擊人
可傳播寇熱(Q fever)

* * * * * * * * *
每年五月至八月都係一欓r物(Vermin)麍ˍD、繁殖期,\]嬼c殖能力好強,隨時會比\]咬到染病!

郊外的毒物很多,蜱蟲是常見的一種。

蜱蟲只有小豆點般的大小,行動緩慢,不會飛行,卵在泥土中孵化後,成蟲會爬到樹葉的葉尖上,等候人或動物經過時,依附在目標身上吸取血液,可以傳播致命的傷寒病毒,感染傷寒的患者會發燒、發冷、流汗、出紅疹,嚴重的病例還會引致脾臟和骨骼發炎,腸壁糜爛導致出血等。

行山人仕若穿短褲、短袖衫,極有可能被蜱蟲「黐上身」,手腳被叮致紅紅腫腫。「到時就好難整甩讕峞I」

萊姆病的病媒是蜱蟲(俗稱壁蝨),常寄生在各種哺乳動物與鳥類身上,野外草叢也因鼠類亂竄而散佈蜱蟲。家中狗及貓隻也是蜱蟲喜好藏身之處。每年春末夏初是蜱蟲活動的旺季,咬人的稚蜱通常只有0.1公分大,被咬的人經常沒感覺;而稚蜱可以停留在人體表面叮咬吸血三至五天,洗澡也難以洗掉。因此,除了要定期為家中寵物清除蜱蟲之外,到野外時,應少到草叢中活動,以免被稚蜱叮咬而受感染。

徵狀
一旦被蜱蟲叮咬,蜱媒螺旋體進入人體造成萊姆病後,病程可分為三期:第一期時皮膚會出現特殊的遊走性紅斑,第二期會出現類似感冒的症狀如發燒、喉嚨痛等。第三期則為多發性傳染,如關節炎、心肌炎、腦膜炎等併發症。歐美有一半的萊姆病例會併發顏面神經麻痺,造成病人眼歪嘴斜等症狀,如可早期診斷,便可及時治療。

併發症
第三期萊姆病可併發腦炎及腦膜炎,並有致病危險。孕婦若感染萊姆病可能造成胎兒畸型,使胎兒的肝、腎臟、骨髓中充滿蜱媒螺旋體,四分之一的孕婦會早產,胎死腹中的比例也相當高。

預防
家中有寵物者應定期為寵物驅除壁蝨,並注意家中環境衛生,外出旅遊亦要穿保護衣物提防蜱蟲叮咬。

* * * * * * * * *
 蜱

  除因口器深刺寄主皮膚,強行拔除,導致口器殘留於傷口內,而可引起發炎潰爛或唾液腺含有某種神經毒素造成麻痺外,其幼蟲、若蟲、雌蟲及雄蟲均會叮咬吸血,而會傳播疾病。傳播的疾病包括病毒性疾病、土勒病、蜱媒回歸熱、落磯山斑疹熱、馬賽斑疹熱、Q熱病及萊姆病。因為蜱吸血常需數天或數週,其唾液腺含有Kiniase,可以減輕寄主的痛苦,所以大多數蜱吸血時,寄主並不感覺疼痛。

http://www.jl.xinhua.org/main/cbs_mg/mi11.htm
http://jsc.tmmu.com.cn/parares/teaching/Course/hhx/Arthropoda/arachnida/tick/tick.htm

   By 叮噹 (219.81.229.133) on Tuesday, June 14, 2005 - 11:04 pm:  Edit

用啥才能完全去除 虫卑 呢??


Add a Message


You can use any username with password "hiking" to post. Registered users and moderators can also post messages here.
Username:  
Password:


Topics Profile Close Page Delete Page Move Page Log Out   Administration