Whale lice (Isocyamus deltobranchium & Isocyamus delphinii; Cyamidae) prevalence in odontocetes off the German and Dutch coasts – morphological and molecular characterization and health implications
Whale lice (Cyamidae; Amphipoda) are ectoparasitic crustaceans adapted to the marine environment with cetaceans as their host. There are few reports of cyamids occurring in odontocetes from the North Sea, and long-term studies are lacking. Marine mammal health was monitored along the German and Dutc...
Published in: | International Journal for Parasitology: Parasites and Wildlife |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Elsevier
2021
|
Subjects: | |
Online Access: | https://doi.org/10.1016/j.ijppaw.2021.02.015 https://doaj.org/article/6a3552604e254acd80e92eb15c5a7809 |
id |
ftdoajarticles:oai:doaj.org/article:6a3552604e254acd80e92eb15c5a7809 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:6a3552604e254acd80e92eb15c5a7809 2023-05-15T17:59:14+02:00 Whale lice (Isocyamus deltobranchium & Isocyamus delphinii; Cyamidae) prevalence in odontocetes off the German and Dutch coasts – morphological and molecular characterization and health implications Kristina Lehnert Lonneke L. IJsseldijk May Li Uy Joy Ometere Boyi Linde van Schalkwijk Eveline A.P. Tollenaar Andrea Gröne Peter Wohlsein Ursula Siebert 2021-08-01T00:00:00Z https://doi.org/10.1016/j.ijppaw.2021.02.015 https://doaj.org/article/6a3552604e254acd80e92eb15c5a7809 EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S2213224421000298 https://doaj.org/toc/2213-2244 2213-2244 doi:10.1016/j.ijppaw.2021.02.015 https://doaj.org/article/6a3552604e254acd80e92eb15c5a7809 International Journal for Parasitology: Parasites and Wildlife, Vol 15, Iss , Pp 22-30 (2021) Amphipoda Odontocetes Ectoparasitic crustacean Host specificity Ecology Pathology Zoology QL1-991 article 2021 ftdoajarticles https://doi.org/10.1016/j.ijppaw.2021.02.015 2022-12-31T05:31:19Z Whale lice (Cyamidae; Amphipoda) are ectoparasitic crustaceans adapted to the marine environment with cetaceans as their host. There are few reports of cyamids occurring in odontocetes from the North Sea, and long-term studies are lacking. Marine mammal health was monitored along the German and Dutch coasts in the past decades, with extensive post mortem investigations conducted. The aim of this study was to analyse archived ectoparasite samples from stranded cetaceans from the North Sea (2010–2019), to determine species, prevalence and impact of ectoparasite infection. Ectoparasites were found on two cetacean species – harbour porpoises (Phocoena phocoena), as the most abundant cetacean species in the North Sea, and on a pilot whale (Globicephala melas), as a rare species here. Prevalence of ectoparasitic crustaceans in cetaceans was low: 7.6% in porpoises stranded in the Netherlands (n = 608) and 1.6% in porpoises stranded in Germany (n = 122). All whale lice infections were found on hosts with skin lesions characterised by ulcerations. Morphological investigations revealed characteristic differences between the cyamid species Isocyamus (I.) delphinii and I. deltobranchium identified. Isocyamus deltobranchium was determined in all infected harbour porpoises. I. delphinii was identified on only the pilot whale. Molecular analyses showed 88% similarity of mDNA COI sequences of I. delphinii with I. deltobranchium supporting them as separate species. Phylogenetic analyses of additional gene loci are required to fully assess the diversity and exchange of whale lice species between geographical regions as well as host specificity. Differing whale lice prevalences in porpoises stranded in the Netherlands and Germany could indicate a difference in severity of skin lesions between these areas. It should be further investigated if more inter- or intraspecific contact, e.g., due to a higher density of porpoises or contact with other cetaceans, or a poorer health status of porpoises in the southern North Sea could explain ... Article in Journal/Newspaper Phocoena phocoena Directory of Open Access Journals: DOAJ Articles International Journal for Parasitology: Parasites and Wildlife 15 22 30 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Amphipoda Odontocetes Ectoparasitic crustacean Host specificity Ecology Pathology Zoology QL1-991 |
spellingShingle |
Amphipoda Odontocetes Ectoparasitic crustacean Host specificity Ecology Pathology Zoology QL1-991 Kristina Lehnert Lonneke L. IJsseldijk May Li Uy Joy Ometere Boyi Linde van Schalkwijk Eveline A.P. Tollenaar Andrea Gröne Peter Wohlsein Ursula Siebert Whale lice (Isocyamus deltobranchium & Isocyamus delphinii; Cyamidae) prevalence in odontocetes off the German and Dutch coasts – morphological and molecular characterization and health implications |
topic_facet |
Amphipoda Odontocetes Ectoparasitic crustacean Host specificity Ecology Pathology Zoology QL1-991 |
description |
Whale lice (Cyamidae; Amphipoda) are ectoparasitic crustaceans adapted to the marine environment with cetaceans as their host. There are few reports of cyamids occurring in odontocetes from the North Sea, and long-term studies are lacking. Marine mammal health was monitored along the German and Dutch coasts in the past decades, with extensive post mortem investigations conducted. The aim of this study was to analyse archived ectoparasite samples from stranded cetaceans from the North Sea (2010–2019), to determine species, prevalence and impact of ectoparasite infection. Ectoparasites were found on two cetacean species – harbour porpoises (Phocoena phocoena), as the most abundant cetacean species in the North Sea, and on a pilot whale (Globicephala melas), as a rare species here. Prevalence of ectoparasitic crustaceans in cetaceans was low: 7.6% in porpoises stranded in the Netherlands (n = 608) and 1.6% in porpoises stranded in Germany (n = 122). All whale lice infections were found on hosts with skin lesions characterised by ulcerations. Morphological investigations revealed characteristic differences between the cyamid species Isocyamus (I.) delphinii and I. deltobranchium identified. Isocyamus deltobranchium was determined in all infected harbour porpoises. I. delphinii was identified on only the pilot whale. Molecular analyses showed 88% similarity of mDNA COI sequences of I. delphinii with I. deltobranchium supporting them as separate species. Phylogenetic analyses of additional gene loci are required to fully assess the diversity and exchange of whale lice species between geographical regions as well as host specificity. Differing whale lice prevalences in porpoises stranded in the Netherlands and Germany could indicate a difference in severity of skin lesions between these areas. It should be further investigated if more inter- or intraspecific contact, e.g., due to a higher density of porpoises or contact with other cetaceans, or a poorer health status of porpoises in the southern North Sea could explain ... |
format |
Article in Journal/Newspaper |
author |
Kristina Lehnert Lonneke L. IJsseldijk May Li Uy Joy Ometere Boyi Linde van Schalkwijk Eveline A.P. Tollenaar Andrea Gröne Peter Wohlsein Ursula Siebert |
author_facet |
Kristina Lehnert Lonneke L. IJsseldijk May Li Uy Joy Ometere Boyi Linde van Schalkwijk Eveline A.P. Tollenaar Andrea Gröne Peter Wohlsein Ursula Siebert |
author_sort |
Kristina Lehnert |
title |
Whale lice (Isocyamus deltobranchium & Isocyamus delphinii; Cyamidae) prevalence in odontocetes off the German and Dutch coasts – morphological and molecular characterization and health implications |
title_short |
Whale lice (Isocyamus deltobranchium & Isocyamus delphinii; Cyamidae) prevalence in odontocetes off the German and Dutch coasts – morphological and molecular characterization and health implications |
title_full |
Whale lice (Isocyamus deltobranchium & Isocyamus delphinii; Cyamidae) prevalence in odontocetes off the German and Dutch coasts – morphological and molecular characterization and health implications |
title_fullStr |
Whale lice (Isocyamus deltobranchium & Isocyamus delphinii; Cyamidae) prevalence in odontocetes off the German and Dutch coasts – morphological and molecular characterization and health implications |
title_full_unstemmed |
Whale lice (Isocyamus deltobranchium & Isocyamus delphinii; Cyamidae) prevalence in odontocetes off the German and Dutch coasts – morphological and molecular characterization and health implications |
title_sort |
whale lice (isocyamus deltobranchium & isocyamus delphinii; cyamidae) prevalence in odontocetes off the german and dutch coasts – morphological and molecular characterization and health implications |
publisher |
Elsevier |
publishDate |
2021 |
url |
https://doi.org/10.1016/j.ijppaw.2021.02.015 https://doaj.org/article/6a3552604e254acd80e92eb15c5a7809 |
genre |
Phocoena phocoena |
genre_facet |
Phocoena phocoena |
op_source |
International Journal for Parasitology: Parasites and Wildlife, Vol 15, Iss , Pp 22-30 (2021) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2213224421000298 https://doaj.org/toc/2213-2244 2213-2244 doi:10.1016/j.ijppaw.2021.02.015 https://doaj.org/article/6a3552604e254acd80e92eb15c5a7809 |
op_doi |
https://doi.org/10.1016/j.ijppaw.2021.02.015 |
container_title |
International Journal for Parasitology: Parasites and Wildlife |
container_volume |
15 |
container_start_page |
22 |
op_container_end_page |
30 |
_version_ |
1766168015950315520 |