First report of the order Mysida (Crustacea) in Antarctic marine ice caves, with description of a new species of Pseudomma and investigations on the taxonomy, morphology and life habits of Mysidetes species
SCUBA diving explorations of three islands off Dumont d'Urville Station at the coast of Adélie Land, East Antarctica, enabled the observation of marine ice caves. Sampling in this unusual habitat yielded a total of three species of Mysidae, altogether previously poorly known or unknown to scien...
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Pensoft Publishers
2021
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Online Access: | https://doi.org/10.3897/zookeys.1079.76412 |
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openpolar |
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topic |
Biota Animalia Arthropoda Malacostraca Mysida Mysidae Pseudomma Mysidetes Development feeding key to species life cycle marine caves molecular systematics polar biology sensory organs |
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Biota Animalia Arthropoda Malacostraca Mysida Mysidae Pseudomma Mysidetes Development feeding key to species life cycle marine caves molecular systematics polar biology sensory organs Wittmann, Karl J. Chevaldonné, Pierre First report of the order Mysida (Crustacea) in Antarctic marine ice caves, with description of a new species of Pseudomma and investigations on the taxonomy, morphology and life habits of Mysidetes species |
topic_facet |
Biota Animalia Arthropoda Malacostraca Mysida Mysidae Pseudomma Mysidetes Development feeding key to species life cycle marine caves molecular systematics polar biology sensory organs |
description |
SCUBA diving explorations of three islands off Dumont d'Urville Station at the coast of Adélie Land, East Antarctica, enabled the observation of marine ice caves. Sampling in this unusual habitat yielded a total of three species of Mysidae, altogether previously poorly known or unknown to science. Pseudomma kryotroglodytum sp. nov. is described, based on the structure of the antennal scale, telson and on cornea-like lateral portions set off against the main body of eyeplates. Mysidetes illigi is re-established at species level after almost a century in synonymy. Re-descriptions are provided for M. illigi and M. hanseni, based on types and ice cave materials. Keys to the Southern Ocean species of Pseudomma and to the world-wide species of Mysidetes are given. Phylogenetic trees are provided for the genera Pseudomma and Mysidetes. 18S rDNA sequences of P. kryotroglodytum differ from GenBank sequences of other Pseudomma species. First sequence data are given for species of the genus Mysidetes: 18S differs between the two examined species and COI is quite diverse between and within species. We found previously unknown, probably sensorial structures in these ice cave species: in P. kryotroglodytum, the basal segment of the antennula shows a pit-like depression with striated pad on the bottom and a median cyst, connected with the bottom of the eyeplate cleft. M. illigi shows a female homologue of the appendix masculina bearing a field of modified setae. Subsequent investigations demonstrated these structures also in species from other habitats. The feeding apparatus and stomach contents of the three ice cave species point to brushing of small particles (detritus, microalgae) from available surfaces, such as sediment, rock and the ice surface. Differences in the feeding apparatus are very subtle between the two Mysidetes species. The high content of fat bodies in M. hanseni could help it to survive periods of starvation. The large storage volume of the foregut in P. kryotroglodytum points to the collection of food with ... |
format |
Article in Journal/Newspaper |
author |
Wittmann, Karl J. Chevaldonné, Pierre |
author_facet |
Wittmann, Karl J. Chevaldonné, Pierre |
author_sort |
Wittmann, Karl J. |
title |
First report of the order Mysida (Crustacea) in Antarctic marine ice caves, with description of a new species of Pseudomma and investigations on the taxonomy, morphology and life habits of Mysidetes species |
title_short |
First report of the order Mysida (Crustacea) in Antarctic marine ice caves, with description of a new species of Pseudomma and investigations on the taxonomy, morphology and life habits of Mysidetes species |
title_full |
First report of the order Mysida (Crustacea) in Antarctic marine ice caves, with description of a new species of Pseudomma and investigations on the taxonomy, morphology and life habits of Mysidetes species |
title_fullStr |
First report of the order Mysida (Crustacea) in Antarctic marine ice caves, with description of a new species of Pseudomma and investigations on the taxonomy, morphology and life habits of Mysidetes species |
title_full_unstemmed |
First report of the order Mysida (Crustacea) in Antarctic marine ice caves, with description of a new species of Pseudomma and investigations on the taxonomy, morphology and life habits of Mysidetes species |
title_sort |
first report of the order mysida (crustacea) in antarctic marine ice caves, with description of a new species of pseudomma and investigations on the taxonomy, morphology and life habits of mysidetes species |
publisher |
Pensoft Publishers |
publishDate |
2021 |
url |
https://doi.org/10.3897/zookeys.1079.76412 |
genre |
Antarc* Antarctic Antarctica East Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Southern Ocean |
op_source |
ZooKeys, 1079, 145-227, (2021-12-31) |
op_relation |
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info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
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ftzenodo:oai:zenodo.org:5829782 2024-09-15T17:48:33+00:00 First report of the order Mysida (Crustacea) in Antarctic marine ice caves, with description of a new species of Pseudomma and investigations on the taxonomy, morphology and life habits of Mysidetes species Wittmann, Karl J. Chevaldonné, Pierre 2021-12-31 https://doi.org/10.3897/zookeys.1079.76412 unknown Pensoft Publishers https://doi.org/10.3897/zookeys.1079.76412.figure11 https://doi.org/10.3897/zookeys.1079.76412.figure22 https://doi.org/10.3897/zookeys.1079.76412.figure14 https://doi.org/10.3897/zookeys.1079.76412.figure21 https://doi.org/10.3897/zookeys.1079.76412.figure9 https://doi.org/10.3897/zookeys.1079.76412.figure4 https://doi.org/10.3897/zookeys.1079.76412.figure27 https://doi.org/10.3897/zookeys.1079.76412.figure3 https://doi.org/10.3897/zookeys.1079.76412.figure8 https://doi.org/10.3897/zookeys.1079.76412.figure16 https://doi.org/10.3897/zookeys.1079.76412.figure18 https://doi.org/10.3897/zookeys.1079.76412.figure28 https://doi.org/10.3897/zookeys.1079.76412.figure10 https://doi.org/10.3897/zookeys.1079.76412.figure24 https://doi.org/10.3897/zookeys.1079.76412.figure17 https://doi.org/10.3897/zookeys.1079.76412.figure23 https://doi.org/10.3897/zookeys.1079.76412.figure7 https://doi.org/10.3897/zookeys.1079.76412.figure13 https://doi.org/10.3897/zookeys.1079.76412.figure15 https://doi.org/10.3897/zookeys.1079.76412.figure20 https://doi.org/10.3897/zookeys.1079.76412.figure5 https://doi.org/10.3897/zookeys.1079.76412.figure2 https://doi.org/10.3897/zookeys.1079.76412.figure19 https://doi.org/10.3897/zookeys.1079.76412.figure29 https://doi.org/10.3897/zookeys.1079.76412.figure1 https://doi.org/10.3897/zookeys.1079.76412.figure26 https://doi.org/10.3897/zookeys.1079.76412.figure6 https://doi.org/10.3897/zookeys.1079.76412.figure12 https://doi.org/10.3897/zookeys.1079.76412.figure25 https://doi.org/10.3897/zookeys.1079.76412.suppl1 https://zenodo.org/communities/biosyslit https://doi.org/10.3897/zookeys.1079.76412 oai:zenodo.org:5829782 info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode ZooKeys, 1079, 145-227, (2021-12-31) Biota Animalia Arthropoda Malacostraca Mysida Mysidae Pseudomma Mysidetes Development feeding key to species life cycle marine caves molecular systematics polar biology sensory organs info:eu-repo/semantics/article 2021 ftzenodo https://doi.org/10.3897/zookeys.1079.7641210.3897/zookeys.1079.76412.figure1110.3897/zookeys.1079.76412.figure2210.3897/zookeys.1079.76412.figure1410.3897/zookeys.1079.76412.figure2110.3897/zookeys.1079.76412.figure910.3897/zookeys.1079.76412.figure410.38 2024-07-26T08:52:49Z SCUBA diving explorations of three islands off Dumont d'Urville Station at the coast of Adélie Land, East Antarctica, enabled the observation of marine ice caves. Sampling in this unusual habitat yielded a total of three species of Mysidae, altogether previously poorly known or unknown to science. Pseudomma kryotroglodytum sp. nov. is described, based on the structure of the antennal scale, telson and on cornea-like lateral portions set off against the main body of eyeplates. Mysidetes illigi is re-established at species level after almost a century in synonymy. Re-descriptions are provided for M. illigi and M. hanseni, based on types and ice cave materials. Keys to the Southern Ocean species of Pseudomma and to the world-wide species of Mysidetes are given. Phylogenetic trees are provided for the genera Pseudomma and Mysidetes. 18S rDNA sequences of P. kryotroglodytum differ from GenBank sequences of other Pseudomma species. First sequence data are given for species of the genus Mysidetes: 18S differs between the two examined species and COI is quite diverse between and within species. We found previously unknown, probably sensorial structures in these ice cave species: in P. kryotroglodytum, the basal segment of the antennula shows a pit-like depression with striated pad on the bottom and a median cyst, connected with the bottom of the eyeplate cleft. M. illigi shows a female homologue of the appendix masculina bearing a field of modified setae. Subsequent investigations demonstrated these structures also in species from other habitats. The feeding apparatus and stomach contents of the three ice cave species point to brushing of small particles (detritus, microalgae) from available surfaces, such as sediment, rock and the ice surface. Differences in the feeding apparatus are very subtle between the two Mysidetes species. The high content of fat bodies in M. hanseni could help it to survive periods of starvation. The large storage volume of the foregut in P. kryotroglodytum points to the collection of food with ... Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Southern Ocean Zenodo ZooKeys 1079 145 227 |