High prevalence of Leucocytozoonspp. in the endangered yellow-eyed penguin ( Megadyptes antipodes) in the sub-Antarctic regions of New Zealand
SUMMARY Yellow-eyed penguins (YEPs) have suffered major population declines over the past 30 years, with no single cause established. Leucocytozoon was first identified in yellow-eyed penguins in 2005. During the 2008/09 breeding season, a high mortality was seen in both mainland yellow-eyed penguin...
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crcambridgeupr:10.1017/s0031182012002089 2024-06-23T07:47:50+00:00 High prevalence of Leucocytozoonspp. in the endangered yellow-eyed penguin ( Megadyptes antipodes) in the sub-Antarctic regions of New Zealand ARGILLA, L. S. HOWE, L. GARTRELL, B. D. ALLEY, M. R. 2013 http://dx.doi.org/10.1017/s0031182012002089 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182012002089 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Parasitology volume 140, issue 5, page 672-682 ISSN 0031-1820 1469-8161 journal-article 2013 crcambridgeupr https://doi.org/10.1017/s0031182012002089 2024-06-12T04:04:25Z SUMMARY Yellow-eyed penguins (YEPs) have suffered major population declines over the past 30 years, with no single cause established. Leucocytozoon was first identified in yellow-eyed penguins in 2005. During the 2008/09 breeding season, a high mortality was seen in both mainland yellow-eyed penguins as well as those on Enderby Island of the Auckland Islands archipelago. A high overall prevalence of Leucocytozoon spp. in association with a high incidence of chick mortality was observed during this period on Enderby Island. One chick had histological evidence of leucocytozoonosis with megaloschizonts in multiple organs throughout its body. In addition, a high prevalence (73·7%) of Leucocytozoon was observed by PCR in the blood of adult Enderby yellow-eyed penguins taken during the 2006/07 season. These findings were different from the low prevalence detected by PCR on the coast of the South Island (11%) during the 2008/2009 breeding session and earlier on Campbell Island (21%) during the 2006/2007 breeding session. The Leucocytozoon spp. sequences detected lead us to conclude that the Leucocytozoon parasite is common in yellow-eyed penguins and has a higher prevalence in penguins from Enderby Island than those from Campbell Island and the mainland of New Zealand. The Enderby Island yellow-eyed penguins are infected with a Leucocytozoon spp. that is genetically distinct from that found in other yellow-eyed penguin populations. The role of Leucocytozoon in the high levels of chick mortality in the yellow-eyed penguins remains unclear. Article in Journal/Newspaper Antarc* Antarctic Auckland Islands Enderby Island Cambridge University Press Antarctic Campbell Island ENVELOPE(169.500,169.500,-52.500,-52.500) New Zealand Parasitology 140 5 672 682 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
description |
SUMMARY Yellow-eyed penguins (YEPs) have suffered major population declines over the past 30 years, with no single cause established. Leucocytozoon was first identified in yellow-eyed penguins in 2005. During the 2008/09 breeding season, a high mortality was seen in both mainland yellow-eyed penguins as well as those on Enderby Island of the Auckland Islands archipelago. A high overall prevalence of Leucocytozoon spp. in association with a high incidence of chick mortality was observed during this period on Enderby Island. One chick had histological evidence of leucocytozoonosis with megaloschizonts in multiple organs throughout its body. In addition, a high prevalence (73·7%) of Leucocytozoon was observed by PCR in the blood of adult Enderby yellow-eyed penguins taken during the 2006/07 season. These findings were different from the low prevalence detected by PCR on the coast of the South Island (11%) during the 2008/2009 breeding session and earlier on Campbell Island (21%) during the 2006/2007 breeding session. The Leucocytozoon spp. sequences detected lead us to conclude that the Leucocytozoon parasite is common in yellow-eyed penguins and has a higher prevalence in penguins from Enderby Island than those from Campbell Island and the mainland of New Zealand. The Enderby Island yellow-eyed penguins are infected with a Leucocytozoon spp. that is genetically distinct from that found in other yellow-eyed penguin populations. The role of Leucocytozoon in the high levels of chick mortality in the yellow-eyed penguins remains unclear. |
format |
Article in Journal/Newspaper |
author |
ARGILLA, L. S. HOWE, L. GARTRELL, B. D. ALLEY, M. R. |
spellingShingle |
ARGILLA, L. S. HOWE, L. GARTRELL, B. D. ALLEY, M. R. High prevalence of Leucocytozoonspp. in the endangered yellow-eyed penguin ( Megadyptes antipodes) in the sub-Antarctic regions of New Zealand |
author_facet |
ARGILLA, L. S. HOWE, L. GARTRELL, B. D. ALLEY, M. R. |
author_sort |
ARGILLA, L. S. |
title |
High prevalence of Leucocytozoonspp. in the endangered yellow-eyed penguin ( Megadyptes antipodes) in the sub-Antarctic regions of New Zealand |
title_short |
High prevalence of Leucocytozoonspp. in the endangered yellow-eyed penguin ( Megadyptes antipodes) in the sub-Antarctic regions of New Zealand |
title_full |
High prevalence of Leucocytozoonspp. in the endangered yellow-eyed penguin ( Megadyptes antipodes) in the sub-Antarctic regions of New Zealand |
title_fullStr |
High prevalence of Leucocytozoonspp. in the endangered yellow-eyed penguin ( Megadyptes antipodes) in the sub-Antarctic regions of New Zealand |
title_full_unstemmed |
High prevalence of Leucocytozoonspp. in the endangered yellow-eyed penguin ( Megadyptes antipodes) in the sub-Antarctic regions of New Zealand |
title_sort |
high prevalence of leucocytozoonspp. in the endangered yellow-eyed penguin ( megadyptes antipodes) in the sub-antarctic regions of new zealand |
publisher |
Cambridge University Press (CUP) |
publishDate |
2013 |
url |
http://dx.doi.org/10.1017/s0031182012002089 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0031182012002089 |
long_lat |
ENVELOPE(169.500,169.500,-52.500,-52.500) |
geographic |
Antarctic Campbell Island New Zealand |
geographic_facet |
Antarctic Campbell Island New Zealand |
genre |
Antarc* Antarctic Auckland Islands Enderby Island |
genre_facet |
Antarc* Antarctic Auckland Islands Enderby Island |
op_source |
Parasitology volume 140, issue 5, page 672-682 ISSN 0031-1820 1469-8161 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0031182012002089 |
container_title |
Parasitology |
container_volume |
140 |
container_issue |
5 |
container_start_page |
672 |
op_container_end_page |
682 |
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1802638030410874880 |