Identification and Description of the Key Molecular Components of the Egg Strings of the Salmon Louse (Lepeophtheirus salmonis)
The salmon louse Lepeophtheirus salmonis is a parasite of Atlantic salmon and other salmonids. Every year, it causes high costs for the Norwegian aquaculture industry. While the morphology of the female genital tract has been described, knowledge of the molecular basis of reproduction is very limite...
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ftmdpi:oai:mdpi.com:/2073-4425/10/12/1004/ 2023-08-20T04:05:19+02:00 Identification and Description of the Key Molecular Components of the Egg Strings of the Salmon Louse (Lepeophtheirus salmonis) Andreas Borchel Heidi Kongshaug Frank Nilsen agris 2019-12-03 application/pdf https://doi.org/10.3390/genes10121004 EN eng Multidisciplinary Digital Publishing Institute Animal Genetics and Genomics https://dx.doi.org/10.3390/genes10121004 https://creativecommons.org/licenses/by/4.0/ Genes; Volume 10; Issue 12; Pages: 1004 reproduction egg attachment RNAi Crustacean Copepod structure cement EGF TSP invertebrate Text 2019 ftmdpi https://doi.org/10.3390/genes10121004 2023-07-31T22:51:35Z The salmon louse Lepeophtheirus salmonis is a parasite of Atlantic salmon and other salmonids. Every year, it causes high costs for the Norwegian aquaculture industry. While the morphology of the female genital tract has been described, knowledge of the molecular basis of reproduction is very limited. We identified nine genes which are expressed exclusively in the female cement gland, the organ responsible for cement production, which is used to hold the eggs together and keep them attached to their mother in egg strings. Six of these genes encode proteins with signal peptides and probably form the main component of the cement. Two other genes are peroxidases, which are probably important in the cement formation. The last gene is not similar to any known protein, but contains a transmembrane domain. A knockdown of all these genes leads to missing or deformed egg strings, preventing reproduction of the lice. The correct assemblage of the cement in the cement gland is essential for successful reproduction of salmon lice. Similar proteins seem to be present in other copepod species, as well. Text Atlantic salmon MDPI Open Access Publishing Genes 10 12 1004 |
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Open Polar |
collection |
MDPI Open Access Publishing |
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ftmdpi |
language |
English |
topic |
reproduction egg attachment RNAi Crustacean Copepod structure cement EGF TSP invertebrate |
spellingShingle |
reproduction egg attachment RNAi Crustacean Copepod structure cement EGF TSP invertebrate Andreas Borchel Heidi Kongshaug Frank Nilsen Identification and Description of the Key Molecular Components of the Egg Strings of the Salmon Louse (Lepeophtheirus salmonis) |
topic_facet |
reproduction egg attachment RNAi Crustacean Copepod structure cement EGF TSP invertebrate |
description |
The salmon louse Lepeophtheirus salmonis is a parasite of Atlantic salmon and other salmonids. Every year, it causes high costs for the Norwegian aquaculture industry. While the morphology of the female genital tract has been described, knowledge of the molecular basis of reproduction is very limited. We identified nine genes which are expressed exclusively in the female cement gland, the organ responsible for cement production, which is used to hold the eggs together and keep them attached to their mother in egg strings. Six of these genes encode proteins with signal peptides and probably form the main component of the cement. Two other genes are peroxidases, which are probably important in the cement formation. The last gene is not similar to any known protein, but contains a transmembrane domain. A knockdown of all these genes leads to missing or deformed egg strings, preventing reproduction of the lice. The correct assemblage of the cement in the cement gland is essential for successful reproduction of salmon lice. Similar proteins seem to be present in other copepod species, as well. |
format |
Text |
author |
Andreas Borchel Heidi Kongshaug Frank Nilsen |
author_facet |
Andreas Borchel Heidi Kongshaug Frank Nilsen |
author_sort |
Andreas Borchel |
title |
Identification and Description of the Key Molecular Components of the Egg Strings of the Salmon Louse (Lepeophtheirus salmonis) |
title_short |
Identification and Description of the Key Molecular Components of the Egg Strings of the Salmon Louse (Lepeophtheirus salmonis) |
title_full |
Identification and Description of the Key Molecular Components of the Egg Strings of the Salmon Louse (Lepeophtheirus salmonis) |
title_fullStr |
Identification and Description of the Key Molecular Components of the Egg Strings of the Salmon Louse (Lepeophtheirus salmonis) |
title_full_unstemmed |
Identification and Description of the Key Molecular Components of the Egg Strings of the Salmon Louse (Lepeophtheirus salmonis) |
title_sort |
identification and description of the key molecular components of the egg strings of the salmon louse (lepeophtheirus salmonis) |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2019 |
url |
https://doi.org/10.3390/genes10121004 |
op_coverage |
agris |
genre |
Atlantic salmon |
genre_facet |
Atlantic salmon |
op_source |
Genes; Volume 10; Issue 12; Pages: 1004 |
op_relation |
Animal Genetics and Genomics https://dx.doi.org/10.3390/genes10121004 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/genes10121004 |
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Genes |
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10 |
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12 |
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1004 |
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1774715821203914752 |