Lungworm ( Pharurus pallasii : Metastrongyloidea: Pseudaliidae) infection in the endangered St. Lawrence beluga whale ( Delphinapterus leucas )
Eighty-eight percent of adult beluga whales, Delphinapterus leucas (age [Formula: see text]7 years; n = 32), and 72% of juveniles (1 year [Formula: see text] age < 7 years; n = 11) were infected with the cranial sinus nematode Pharurus pallasii. No fetuses or young of the year (age [Formula:...
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crcansciencepubl:10.1139/z03-033 2023-12-17T10:28:02+01:00 Lungworm ( Pharurus pallasii : Metastrongyloidea: Pseudaliidae) infection in the endangered St. Lawrence beluga whale ( Delphinapterus leucas ) Houde, Magali Measures, Lena N Huot, Jean 2003 http://dx.doi.org/10.1139/z03-033 http://www.nrcresearchpress.com/doi/pdf/10.1139/z03-033 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 81, issue 3, page 543-551 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2003 crcansciencepubl https://doi.org/10.1139/z03-033 2023-11-19T13:38:36Z Eighty-eight percent of adult beluga whales, Delphinapterus leucas (age [Formula: see text]7 years; n = 32), and 72% of juveniles (1 year [Formula: see text] age < 7 years; n = 11) were infected with the cranial sinus nematode Pharurus pallasii. No fetuses or young of the year (age [Formula: see text]1 year; n = 9) were infected. The mean intensity of infection was 419 (range 22042) in adults and 179 (range 1500) in juveniles. There was no difference in mean intensity of infection between the sexes or between juvenile and adult beluga. The absence of P. pallasii in young of the year suggests that transmission is not transplacental or transmammary and that infections are acquired as young beluga begin to feed on infected prey. Pharurus pallasii were 3 times more numerous in the peribullar sinuses than in the frontal sinuses, but were equally distributed laterally. Male and female P. pallasii in heavily infected sinuses were significantly longer than those in lightly infected sinuses. No intensity-dependent effect on fecundity of gravid females was observed. No macroscopic lesions were observed in association with P. pallasii in fresh or frozen carcasses. Low numbers of adult P. pallasii in the lungs suggest that the cranial sinuses are the preferred site of infection. No relationship was found between intensity of infection and body condition of beluga. Article in Journal/Newspaper Beluga Beluga whale Beluga* Delphinapterus leucas Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 81 3 543 551 |
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Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
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crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Houde, Magali Measures, Lena N Huot, Jean Lungworm ( Pharurus pallasii : Metastrongyloidea: Pseudaliidae) infection in the endangered St. Lawrence beluga whale ( Delphinapterus leucas ) |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Eighty-eight percent of adult beluga whales, Delphinapterus leucas (age [Formula: see text]7 years; n = 32), and 72% of juveniles (1 year [Formula: see text] age < 7 years; n = 11) were infected with the cranial sinus nematode Pharurus pallasii. No fetuses or young of the year (age [Formula: see text]1 year; n = 9) were infected. The mean intensity of infection was 419 (range 22042) in adults and 179 (range 1500) in juveniles. There was no difference in mean intensity of infection between the sexes or between juvenile and adult beluga. The absence of P. pallasii in young of the year suggests that transmission is not transplacental or transmammary and that infections are acquired as young beluga begin to feed on infected prey. Pharurus pallasii were 3 times more numerous in the peribullar sinuses than in the frontal sinuses, but were equally distributed laterally. Male and female P. pallasii in heavily infected sinuses were significantly longer than those in lightly infected sinuses. No intensity-dependent effect on fecundity of gravid females was observed. No macroscopic lesions were observed in association with P. pallasii in fresh or frozen carcasses. Low numbers of adult P. pallasii in the lungs suggest that the cranial sinuses are the preferred site of infection. No relationship was found between intensity of infection and body condition of beluga. |
format |
Article in Journal/Newspaper |
author |
Houde, Magali Measures, Lena N Huot, Jean |
author_facet |
Houde, Magali Measures, Lena N Huot, Jean |
author_sort |
Houde, Magali |
title |
Lungworm ( Pharurus pallasii : Metastrongyloidea: Pseudaliidae) infection in the endangered St. Lawrence beluga whale ( Delphinapterus leucas ) |
title_short |
Lungworm ( Pharurus pallasii : Metastrongyloidea: Pseudaliidae) infection in the endangered St. Lawrence beluga whale ( Delphinapterus leucas ) |
title_full |
Lungworm ( Pharurus pallasii : Metastrongyloidea: Pseudaliidae) infection in the endangered St. Lawrence beluga whale ( Delphinapterus leucas ) |
title_fullStr |
Lungworm ( Pharurus pallasii : Metastrongyloidea: Pseudaliidae) infection in the endangered St. Lawrence beluga whale ( Delphinapterus leucas ) |
title_full_unstemmed |
Lungworm ( Pharurus pallasii : Metastrongyloidea: Pseudaliidae) infection in the endangered St. Lawrence beluga whale ( Delphinapterus leucas ) |
title_sort |
lungworm ( pharurus pallasii : metastrongyloidea: pseudaliidae) infection in the endangered st. lawrence beluga whale ( delphinapterus leucas ) |
publisher |
Canadian Science Publishing |
publishDate |
2003 |
url |
http://dx.doi.org/10.1139/z03-033 http://www.nrcresearchpress.com/doi/pdf/10.1139/z03-033 |
genre |
Beluga Beluga whale Beluga* Delphinapterus leucas |
genre_facet |
Beluga Beluga whale Beluga* Delphinapterus leucas |
op_source |
Canadian Journal of Zoology volume 81, issue 3, page 543-551 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z03-033 |
container_title |
Canadian Journal of Zoology |
container_volume |
81 |
container_issue |
3 |
container_start_page |
543 |
op_container_end_page |
551 |
_version_ |
1785580045870301184 |