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Beyond the epistaxis: voluntary nasal leech (Dinobdella ferox) infestation revealed the leech behaviours and the host symptoms through the parasitic period.
Parasitology. 2019 09; 146(11):1477-1485.P

Abstract

Dinobdella ferox is the most reported and studied leech species parasitizing mammalian mucus membranes. However, our knowledge of D. ferox during parasitizing and its effects on hosts has remained limited. To investigate the behaviour of D. ferox in the parasitic period and the subsequent host symptoms, the author was infested voluntarily with three juvenile leeches under regularly-conducted examinations of complete blood count (CBC) and nasal endoscopy (NE). After the first head protrusion of the parasitizing leech at the host nostril, the occurrence of bleeding-related symptoms decreased and ceased completely weeks before the end of the parasitic period. Negligible impacts of the parasitizing leech on the host were shown by CBCs, and a parasitizing leech was able to hide from NE despite being so large it at times protrudes out of the host nostril. Finally, parasitizing D. ferox were coaxed to emerge at the nostril by water only after their first head protrusion, indicating that non-invasive removal of parasitizing D. ferox before head protrusion might be difficult. Through the voluntary infestation, the full documentation of behaviours of D. ferox in the parasitic period and host symptoms shown in this study will promote better diagnoses and treatments of nasal leech infestation.

Authors+Show Affiliations

Department of Life Science, National Taiwan University, No.1, Sec.4, Roosevelt Rd., Taipei 10617, Taiwan.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31190663

Citation

Lai, Yi-Te. "Beyond the Epistaxis: Voluntary Nasal Leech (Dinobdella Ferox) Infestation Revealed the Leech Behaviours and the Host Symptoms Through the Parasitic Period." Parasitology, vol. 146, no. 11, 2019, pp. 1477-1485.
Lai YT. Beyond the epistaxis: voluntary nasal leech (Dinobdella ferox) infestation revealed the leech behaviours and the host symptoms through the parasitic period. Parasitology. 2019;146(11):1477-1485.
Lai, Y. T. (2019). Beyond the epistaxis: voluntary nasal leech (Dinobdella ferox) infestation revealed the leech behaviours and the host symptoms through the parasitic period. Parasitology, 146(11), 1477-1485. https://doi.org/10.1017/S0031182019000751
Lai YT. Beyond the Epistaxis: Voluntary Nasal Leech (Dinobdella Ferox) Infestation Revealed the Leech Behaviours and the Host Symptoms Through the Parasitic Period. Parasitology. 2019;146(11):1477-1485. PubMed PMID: 31190663.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Beyond the epistaxis: voluntary nasal leech (Dinobdella ferox) infestation revealed the leech behaviours and the host symptoms through the parasitic period. A1 - Lai,Yi-Te, Y1 - 2019/06/28/ PY - 2019/6/14/pubmed PY - 2020/5/6/medline PY - 2019/6/14/entrez KW - Dinobdella ferox KW - head protrusion KW - host symptom KW - nasal leech KW - parasitic period KW - voluntary infestation SP - 1477 EP - 1485 JF - Parasitology JO - Parasitology VL - 146 IS - 11 N2 - Dinobdella ferox is the most reported and studied leech species parasitizing mammalian mucus membranes. However, our knowledge of D. ferox during parasitizing and its effects on hosts has remained limited. To investigate the behaviour of D. ferox in the parasitic period and the subsequent host symptoms, the author was infested voluntarily with three juvenile leeches under regularly-conducted examinations of complete blood count (CBC) and nasal endoscopy (NE). After the first head protrusion of the parasitizing leech at the host nostril, the occurrence of bleeding-related symptoms decreased and ceased completely weeks before the end of the parasitic period. Negligible impacts of the parasitizing leech on the host were shown by CBCs, and a parasitizing leech was able to hide from NE despite being so large it at times protrudes out of the host nostril. Finally, parasitizing D. ferox were coaxed to emerge at the nostril by water only after their first head protrusion, indicating that non-invasive removal of parasitizing D. ferox before head protrusion might be difficult. Through the voluntary infestation, the full documentation of behaviours of D. ferox in the parasitic period and host symptoms shown in this study will promote better diagnoses and treatments of nasal leech infestation. SN - 1469-8161 UR - https://www.unboundmedicine.com/medline/citation/31190663/Beyond_the_epistaxis:_voluntary_nasal_leech__Dinobdella_ferox__infestation_revealed_the_leech_behaviours_and_the_host_symptoms_through_the_parasitic_period_ L2 - https://www.cambridge.org/core/product/identifier/S0031182019000751/type/journal_article DB - PRIME DP - Unbound Medicine ER -
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