Occurrence of two distinct lineages of the freshwater jellyfish Craspedacusta sowerbii (Hydrozoa: Limnomedusae) in Italy
The freshwater jellyfish Craspedacusta sowerbii Lankester 1880 is a cryptic cosmopolitan invasive species, which occurs in all continents except Antarctica. Recent molecular studies suggest the existence of at least three very different genetic lineages of Craspedacusta: the “sowerbii”, the “kiating...
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ftdoajarticles:oai:doaj.org/article:fb385cbc36ad4076ae929a4b02b517bd 2023-05-15T13:37:35+02:00 Occurrence of two distinct lineages of the freshwater jellyfish Craspedacusta sowerbii (Hydrozoa: Limnomedusae) in Italy Massimo Morpurgo Peter Schuchert Samuel Vorhauser Renate Alber 2020-12-01T00:00:00Z https://doi.org/10.4081/jlimnol.2020.1974 https://doaj.org/article/fb385cbc36ad4076ae929a4b02b517bd EN eng PAGEPress Publications https://jlimnol.it/index.php/jlimnol/article/view/1974 https://doaj.org/toc/1129-5767 https://doaj.org/toc/1723-8633 doi:10.4081/jlimnol.2020.1974 1129-5767 1723-8633 https://doaj.org/article/fb385cbc36ad4076ae929a4b02b517bd Journal of Limnology, Iss AOP (2020) Freshwater medusa polyps invasive species genetic lineages 16S Geography. Anthropology. Recreation G Physical geography GB3-5030 Environmental sciences GE1-350 article 2020 ftdoajarticles https://doi.org/10.4081/jlimnol.2020.1974 2022-12-31T09:48:00Z The freshwater jellyfish Craspedacusta sowerbii Lankester 1880 is a cryptic cosmopolitan invasive species, which occurs in all continents except Antarctica. Recent molecular studies suggest the existence of at least three very different genetic lineages of Craspedacusta: the “sowerbii”, the “kiatingi”, and the “sinensis” lineages. We report the presence of both medusae and polyps of this alien taxon in the Large Lake of Monticolo / Montiggl, a meso-eutrophic natural lake in the Province of Bolzano / Bozen in Northern Italy. Molecular analyses of mitochondrial 16S sequences showed that this population belongs to a different lineage than that recently described for Sicily (Southern Italy). Therefore, there are two different genetic lineages of C. sowerbii in Italy. In the Large Lake of Monticolo / Montiggl medusae were observed in 6 consecutive summers (2015–2020), from July to September. All the examined medusae were males. The stomach content analyses showed that zooplanktonic copepods and cladocerans with size range between 0.3 and 0.8 mm were the preferred prey of medusae. Polyps of C. sowerbii were recorded in the lake on the zebra mussel Dreissena polymorpha in shallow water and on the underside of artificial substrates. The analyses of zebra mussels would therefore be a simple method to check for the presence of the polyp stage of C. sowerbii in various aquatic environments. Article in Journal/Newspaper Antarc* Antarctica Copepods Directory of Open Access Journals: DOAJ Articles Lankester ENVELOPE(160.483,160.483,-79.267,-79.267) Medusa ENVELOPE(157.417,157.417,-79.633,-79.633) Journal of Limnology 80 1 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Freshwater medusa polyps invasive species genetic lineages 16S Geography. Anthropology. Recreation G Physical geography GB3-5030 Environmental sciences GE1-350 |
spellingShingle |
Freshwater medusa polyps invasive species genetic lineages 16S Geography. Anthropology. Recreation G Physical geography GB3-5030 Environmental sciences GE1-350 Massimo Morpurgo Peter Schuchert Samuel Vorhauser Renate Alber Occurrence of two distinct lineages of the freshwater jellyfish Craspedacusta sowerbii (Hydrozoa: Limnomedusae) in Italy |
topic_facet |
Freshwater medusa polyps invasive species genetic lineages 16S Geography. Anthropology. Recreation G Physical geography GB3-5030 Environmental sciences GE1-350 |
description |
The freshwater jellyfish Craspedacusta sowerbii Lankester 1880 is a cryptic cosmopolitan invasive species, which occurs in all continents except Antarctica. Recent molecular studies suggest the existence of at least three very different genetic lineages of Craspedacusta: the “sowerbii”, the “kiatingi”, and the “sinensis” lineages. We report the presence of both medusae and polyps of this alien taxon in the Large Lake of Monticolo / Montiggl, a meso-eutrophic natural lake in the Province of Bolzano / Bozen in Northern Italy. Molecular analyses of mitochondrial 16S sequences showed that this population belongs to a different lineage than that recently described for Sicily (Southern Italy). Therefore, there are two different genetic lineages of C. sowerbii in Italy. In the Large Lake of Monticolo / Montiggl medusae were observed in 6 consecutive summers (2015–2020), from July to September. All the examined medusae were males. The stomach content analyses showed that zooplanktonic copepods and cladocerans with size range between 0.3 and 0.8 mm were the preferred prey of medusae. Polyps of C. sowerbii were recorded in the lake on the zebra mussel Dreissena polymorpha in shallow water and on the underside of artificial substrates. The analyses of zebra mussels would therefore be a simple method to check for the presence of the polyp stage of C. sowerbii in various aquatic environments. |
format |
Article in Journal/Newspaper |
author |
Massimo Morpurgo Peter Schuchert Samuel Vorhauser Renate Alber |
author_facet |
Massimo Morpurgo Peter Schuchert Samuel Vorhauser Renate Alber |
author_sort |
Massimo Morpurgo |
title |
Occurrence of two distinct lineages of the freshwater jellyfish Craspedacusta sowerbii (Hydrozoa: Limnomedusae) in Italy |
title_short |
Occurrence of two distinct lineages of the freshwater jellyfish Craspedacusta sowerbii (Hydrozoa: Limnomedusae) in Italy |
title_full |
Occurrence of two distinct lineages of the freshwater jellyfish Craspedacusta sowerbii (Hydrozoa: Limnomedusae) in Italy |
title_fullStr |
Occurrence of two distinct lineages of the freshwater jellyfish Craspedacusta sowerbii (Hydrozoa: Limnomedusae) in Italy |
title_full_unstemmed |
Occurrence of two distinct lineages of the freshwater jellyfish Craspedacusta sowerbii (Hydrozoa: Limnomedusae) in Italy |
title_sort |
occurrence of two distinct lineages of the freshwater jellyfish craspedacusta sowerbii (hydrozoa: limnomedusae) in italy |
publisher |
PAGEPress Publications |
publishDate |
2020 |
url |
https://doi.org/10.4081/jlimnol.2020.1974 https://doaj.org/article/fb385cbc36ad4076ae929a4b02b517bd |
long_lat |
ENVELOPE(160.483,160.483,-79.267,-79.267) ENVELOPE(157.417,157.417,-79.633,-79.633) |
geographic |
Lankester Medusa |
geographic_facet |
Lankester Medusa |
genre |
Antarc* Antarctica Copepods |
genre_facet |
Antarc* Antarctica Copepods |
op_source |
Journal of Limnology, Iss AOP (2020) |
op_relation |
https://jlimnol.it/index.php/jlimnol/article/view/1974 https://doaj.org/toc/1129-5767 https://doaj.org/toc/1723-8633 doi:10.4081/jlimnol.2020.1974 1129-5767 1723-8633 https://doaj.org/article/fb385cbc36ad4076ae929a4b02b517bd |
op_doi |
https://doi.org/10.4081/jlimnol.2020.1974 |
container_title |
Journal of Limnology |
container_volume |
80 |
container_issue |
1 |
_version_ |
1766094387230539776 |