The localization of the larvae of the nostril fly (Cephenemyia trompe L) in the pharynx of reindeer in an earlier unknown tonsil tissue
The localization of the larvae of the reindeer nostril fly (Cephenemyia trompe L) in the pharynx was investigated in 21 reindeer, 11 months old, during April, and in 5 animals during November. In reindeer, without the presence of larvae, no preformed pharyngeal pouch was found at the predilection si...
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Septentrio Academic Publishing
1983
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Online Access: | https://doi.org/10.7557/2.3.1.468 https://doaj.org/article/75fb260d6e4c47218d0e4c09012e5ed4 |
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ftdoajarticles:oai:doaj.org/article:75fb260d6e4c47218d0e4c09012e5ed4 2023-05-15T18:03:56+02:00 The localization of the larvae of the nostril fly (Cephenemyia trompe L) in the pharynx of reindeer in an earlier unknown tonsil tissue Claes Rehbinder Magnus Nordkvist 1983-05-01T00:00:00Z https://doi.org/10.7557/2.3.1.468 https://doaj.org/article/75fb260d6e4c47218d0e4c09012e5ed4 EN eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/rangifer/article/view/468 https://doaj.org/toc/1890-6729 doi:10.7557/2.3.1.468 1890-6729 https://doaj.org/article/75fb260d6e4c47218d0e4c09012e5ed4 Rangifer, Vol 3, Iss 1 (1983) tonsil tissue reindeer Cephenemyia trompe Animal culture SF1-1100 article 1983 ftdoajarticles https://doi.org/10.7557/2.3.1.468 2022-12-31T02:16:29Z The localization of the larvae of the reindeer nostril fly (Cephenemyia trompe L) in the pharynx was investigated in 21 reindeer, 11 months old, during April, and in 5 animals during November. In reindeer, without the presence of larvae, no preformed pharyngeal pouch was found at the predilection site, dorsomedially in the pharynx, but an unpaired tronsil, tentatively named Tonsilla pharyngis dorso-medialis. In 12 of the animals investigated during April, a puch containing larvae of C. trompe was found at the predilection site, i.e. the site of the dorsomedially located tonsil. Histologically remnants of tonsil tissue was present at the opening of the pouch. In 3 animals a pouch, containing larvae, was found in the left lateral wall and in 2 animals in the right lateral wall of the pharynz between the opening of Tuba auditiva and the tonsil. In one animal 2 pouches were found, one in the tonsil tissue and one located in the right lateral wall of pharynx. In serial sections from two animals investigated during November, 1 :st instar larvae of Cephenomyia trompe were found in the crypts of the tonsills. The fact that the tonsil tissue is a predilection site for C. trompe larvae may be due to the mechanical protection the 1st instar larvae can find in the crypts. Larvae may, however, also attach to other parts of the pharyngeal mucosa. During their development the larvae penetrate the mucosa forming a pouch. The wall of this pouch consists of a naked acute granulation tissue heavily infiltrated with eosinophilic leucocytes. In connection with the healing process, starting when the larvae have left, a pouch may remain, characterized by walls of chronic granulation tissue covered by a mucous membrane. This pouch could well be misinterpreted as a preformed pouch. Lokalisationen av svalgkormflugans (Cephenemyia trompe L) larver i svalget på ren i en tidigare okänd tonsillvävnad (Tonsilla pharyngis dorso-medialis). Abstract in Swedish / Sammanfattning: Lokalisationen av svalgkormflugans (Cephenemyia trompe L) larver i ... Article in Journal/Newspaper Rangifer ren Directory of Open Access Journals: DOAJ Articles Rangifer 3 1 46 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
tonsil tissue reindeer Cephenemyia trompe Animal culture SF1-1100 |
spellingShingle |
tonsil tissue reindeer Cephenemyia trompe Animal culture SF1-1100 Claes Rehbinder Magnus Nordkvist The localization of the larvae of the nostril fly (Cephenemyia trompe L) in the pharynx of reindeer in an earlier unknown tonsil tissue |
topic_facet |
tonsil tissue reindeer Cephenemyia trompe Animal culture SF1-1100 |
description |
The localization of the larvae of the reindeer nostril fly (Cephenemyia trompe L) in the pharynx was investigated in 21 reindeer, 11 months old, during April, and in 5 animals during November. In reindeer, without the presence of larvae, no preformed pharyngeal pouch was found at the predilection site, dorsomedially in the pharynx, but an unpaired tronsil, tentatively named Tonsilla pharyngis dorso-medialis. In 12 of the animals investigated during April, a puch containing larvae of C. trompe was found at the predilection site, i.e. the site of the dorsomedially located tonsil. Histologically remnants of tonsil tissue was present at the opening of the pouch. In 3 animals a pouch, containing larvae, was found in the left lateral wall and in 2 animals in the right lateral wall of the pharynz between the opening of Tuba auditiva and the tonsil. In one animal 2 pouches were found, one in the tonsil tissue and one located in the right lateral wall of pharynx. In serial sections from two animals investigated during November, 1 :st instar larvae of Cephenomyia trompe were found in the crypts of the tonsills. The fact that the tonsil tissue is a predilection site for C. trompe larvae may be due to the mechanical protection the 1st instar larvae can find in the crypts. Larvae may, however, also attach to other parts of the pharyngeal mucosa. During their development the larvae penetrate the mucosa forming a pouch. The wall of this pouch consists of a naked acute granulation tissue heavily infiltrated with eosinophilic leucocytes. In connection with the healing process, starting when the larvae have left, a pouch may remain, characterized by walls of chronic granulation tissue covered by a mucous membrane. This pouch could well be misinterpreted as a preformed pouch. Lokalisationen av svalgkormflugans (Cephenemyia trompe L) larver i svalget på ren i en tidigare okänd tonsillvävnad (Tonsilla pharyngis dorso-medialis). Abstract in Swedish / Sammanfattning: Lokalisationen av svalgkormflugans (Cephenemyia trompe L) larver i ... |
format |
Article in Journal/Newspaper |
author |
Claes Rehbinder Magnus Nordkvist |
author_facet |
Claes Rehbinder Magnus Nordkvist |
author_sort |
Claes Rehbinder |
title |
The localization of the larvae of the nostril fly (Cephenemyia trompe L) in the pharynx of reindeer in an earlier unknown tonsil tissue |
title_short |
The localization of the larvae of the nostril fly (Cephenemyia trompe L) in the pharynx of reindeer in an earlier unknown tonsil tissue |
title_full |
The localization of the larvae of the nostril fly (Cephenemyia trompe L) in the pharynx of reindeer in an earlier unknown tonsil tissue |
title_fullStr |
The localization of the larvae of the nostril fly (Cephenemyia trompe L) in the pharynx of reindeer in an earlier unknown tonsil tissue |
title_full_unstemmed |
The localization of the larvae of the nostril fly (Cephenemyia trompe L) in the pharynx of reindeer in an earlier unknown tonsil tissue |
title_sort |
localization of the larvae of the nostril fly (cephenemyia trompe l) in the pharynx of reindeer in an earlier unknown tonsil tissue |
publisher |
Septentrio Academic Publishing |
publishDate |
1983 |
url |
https://doi.org/10.7557/2.3.1.468 https://doaj.org/article/75fb260d6e4c47218d0e4c09012e5ed4 |
genre |
Rangifer ren |
genre_facet |
Rangifer ren |
op_source |
Rangifer, Vol 3, Iss 1 (1983) |
op_relation |
https://septentrio.uit.no/index.php/rangifer/article/view/468 https://doaj.org/toc/1890-6729 doi:10.7557/2.3.1.468 1890-6729 https://doaj.org/article/75fb260d6e4c47218d0e4c09012e5ed4 |
op_doi |
https://doi.org/10.7557/2.3.1.468 |
container_title |
Rangifer |
container_volume |
3 |
container_issue |
1 |
container_start_page |
46 |
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1766175156309327872 |