Gorgonophilus canadensis (Copepoda: Lamippidae) a parasite in the octocoral Paragorgia arborea – relation to host, reproduction, and morphology
The family Lamippidae (Cyclopoida) are endosymbionts mainly occurring in shallow water octocorals and records from deep-sea corals are few. Here we investigated the relationship between the lamippid Gorgonophilus canadensis Buhl-Mortensen & Mortensen, 2004 and its host the deep-sea coral Paragor...
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ftimr:oai:imr.brage.unit.no:11250/3019031 2023-05-15T17:54:34+02:00 Gorgonophilus canadensis (Copepoda: Lamippidae) a parasite in the octocoral Paragorgia arborea – relation to host, reproduction, and morphology Buhl-Mortensen, Lene Neuhaus, Jenny Williams, Jason D. 2022 application/pdf https://hdl.handle.net/11250/3019031 https://doi.org/10.1007/s13199-022-00866-9 eng eng Symbiosis. 2022, . urn:issn:0334-5114 https://hdl.handle.net/11250/3019031 https://doi.org/10.1007/s13199-022-00866-9 cristin:2051987 11 Symbiosis Peer reviewed Journal article 2022 ftimr https://doi.org/10.1007/s13199-022-00866-9 2022-09-21T22:42:14Z The family Lamippidae (Cyclopoida) are endosymbionts mainly occurring in shallow water octocorals and records from deep-sea corals are few. Here we investigated the relationship between the lamippid Gorgonophilus canadensis Buhl-Mortensen & Mortensen, 2004 and its host the deep-sea coral Paragorgia arborea. Twenty-one specimens of G. canadensis was found inside eight gall-like structures on a P. arborea colony collected in 2010 at 318 m depth off Norway. The galls contained on average 1.6 females, 1.0 males, and 7.5 egg sacs estimated to contain 400 eggs each. Females were larger than males (4.6 mm compared to 2.0 mm). The gall volume increased with the number of egg sacs, females, and the length of females inside, the latter correlation was significant (p < 0.05). The number of egg sacs in galls was positively correlated with the abundance and length of females (p < 0.05), and by adding Canadian data from 17 galls the relation between egg sacs and numbers of females and males in galls became stronger (p < 0.01 and p < 0.05, respectively). Scanning electron microscopy revealed that this highly modified endoparasite has thoracic appendages with non-segmented flexible spines with a specialized structure at their tips through which threads are excreted. We speculate that this adaptation could relate to feeding or attachment of egg sacs inside the galls. Thread production has rarely been reported for copepods and we explore its function in the group as well as other crustaceans. The age and size of the parasite, and the introduction to and release from the host is also discussed. publishedVersion Article in Journal/Newspaper Paragorgia arborea Copepods Institute for Marine Research: Brage IMR Norway Symbiosis 87 3 189 199 |
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Open Polar |
collection |
Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
description |
The family Lamippidae (Cyclopoida) are endosymbionts mainly occurring in shallow water octocorals and records from deep-sea corals are few. Here we investigated the relationship between the lamippid Gorgonophilus canadensis Buhl-Mortensen & Mortensen, 2004 and its host the deep-sea coral Paragorgia arborea. Twenty-one specimens of G. canadensis was found inside eight gall-like structures on a P. arborea colony collected in 2010 at 318 m depth off Norway. The galls contained on average 1.6 females, 1.0 males, and 7.5 egg sacs estimated to contain 400 eggs each. Females were larger than males (4.6 mm compared to 2.0 mm). The gall volume increased with the number of egg sacs, females, and the length of females inside, the latter correlation was significant (p < 0.05). The number of egg sacs in galls was positively correlated with the abundance and length of females (p < 0.05), and by adding Canadian data from 17 galls the relation between egg sacs and numbers of females and males in galls became stronger (p < 0.01 and p < 0.05, respectively). Scanning electron microscopy revealed that this highly modified endoparasite has thoracic appendages with non-segmented flexible spines with a specialized structure at their tips through which threads are excreted. We speculate that this adaptation could relate to feeding or attachment of egg sacs inside the galls. Thread production has rarely been reported for copepods and we explore its function in the group as well as other crustaceans. The age and size of the parasite, and the introduction to and release from the host is also discussed. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Buhl-Mortensen, Lene Neuhaus, Jenny Williams, Jason D. |
spellingShingle |
Buhl-Mortensen, Lene Neuhaus, Jenny Williams, Jason D. Gorgonophilus canadensis (Copepoda: Lamippidae) a parasite in the octocoral Paragorgia arborea – relation to host, reproduction, and morphology |
author_facet |
Buhl-Mortensen, Lene Neuhaus, Jenny Williams, Jason D. |
author_sort |
Buhl-Mortensen, Lene |
title |
Gorgonophilus canadensis (Copepoda: Lamippidae) a parasite in the octocoral Paragorgia arborea – relation to host, reproduction, and morphology |
title_short |
Gorgonophilus canadensis (Copepoda: Lamippidae) a parasite in the octocoral Paragorgia arborea – relation to host, reproduction, and morphology |
title_full |
Gorgonophilus canadensis (Copepoda: Lamippidae) a parasite in the octocoral Paragorgia arborea – relation to host, reproduction, and morphology |
title_fullStr |
Gorgonophilus canadensis (Copepoda: Lamippidae) a parasite in the octocoral Paragorgia arborea – relation to host, reproduction, and morphology |
title_full_unstemmed |
Gorgonophilus canadensis (Copepoda: Lamippidae) a parasite in the octocoral Paragorgia arborea – relation to host, reproduction, and morphology |
title_sort |
gorgonophilus canadensis (copepoda: lamippidae) a parasite in the octocoral paragorgia arborea – relation to host, reproduction, and morphology |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/3019031 https://doi.org/10.1007/s13199-022-00866-9 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Paragorgia arborea Copepods |
genre_facet |
Paragorgia arborea Copepods |
op_source |
11 Symbiosis |
op_relation |
Symbiosis. 2022, . urn:issn:0334-5114 https://hdl.handle.net/11250/3019031 https://doi.org/10.1007/s13199-022-00866-9 cristin:2051987 |
op_doi |
https://doi.org/10.1007/s13199-022-00866-9 |
container_title |
Symbiosis |
container_volume |
87 |
container_issue |
3 |
container_start_page |
189 |
op_container_end_page |
199 |
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1766162360686346240 |