Two swimming modes in Trachymedusae; bell kinematics and the role of giant axons. [PDF]
J Exp Biol, 2021 ABSTRACT Although members of the Rhopalonematidae family (Cnidaria, Hydrozoa, Trachymedusae) are known to exhibit unusually powerful jet swimming in addition to their more normal slow swimming behaviour, for the most part, reports are rare and anecdotal.
Meech ME +3 more
europepmc +5 more sources
Occurrence of Haliscera bigelowi Kramp, 1947 (Hydromedusae: Trachymedusae: Halicreatidae) in Northern Arabian Sea, India [PDF]
Check List, 2012 The aim of this study is to present the record of the hydromedusa Haliscera bigelowi Kramp, 1947 from mesopelagic environment on the Northern Arabian Sea, India.
Pazhaniyappan Ezhilarasan +3 more
doaj +5 more sources
Diversity and life-cycle analysis of Pacific Ocean zooplankton by videomicroscopy and DNA barcoding: Hydrozoa. [PDF]
PLoS ONE, 2019 Most, but not all cnidarian species in the class Hydrozoa have a life cycle in which a colonial, asexually reproducing hydroid phase alternates with a free-swimming, sexually reproducing medusa phase. They are not well known, in part because many of them
Peter J Bryant, Timothy E Arehart
doaj +2 more sources
High Abundance of the Epibenthic Trachymedusa Ptychogastria polaris Allman, 1878 (Hydrozoa, Trachylina) in Subpolar Fjords along the West Antarctic Peninsula. [PDF]
PLoS One, 2017 Medusae can be conspicuous and abundant members of seafloor communities in deep-sea benthic boundary layers. The epibenthic trachymedusa, Ptychogastria polaris Allman, 1878 (Hydrozoa: Trachylina: Ptychogastriidae) occurs in the cold, high latitude systems of both the northern and southern hemispheres, with a circumpolar distribution in Arctic and sub ...
Grange LJ +4 more
europepmc +7 more sources
European Journal of Taxonomy, 2016 A new genus and species of sympagic trachymedusa, Glaciambulata neumayeri gen. et sp. nov., are described based on material from Antarctica. Its generic features are compared to those of its relatives, Ptychogastria Allman, 1878 and Tesserogastria Beyer,
Horia R. Galea +5 more
doaj +4 more sources
Check List of Iran marine Cnidarians (Animalia, Cnidaria) [PDF]
Iranian Journal of Animal Biosystematics, 2020 There is an urgent need for quality control of marine species data published in domestic journals and open access databases. We extracted 149 accepted Cnidarian species after the quality control process on available published records on the OBIS data ...
Abdolvahab Maghsoudlou
doaj +1 more source
Observations of the Deep-Sea Trachymedusa Benthocodon pedunculata [PDF]
Invertebrate Biology, 1997 Recent observations, from a remotely operated vehicle (ROV) working in the Monterey Submarine Canyon in the northeast Pacific and from the Johnson Sea Link II in the northwest Atlantic, revealed the presence of the trachymedusa Benthocodon pedunculata near the bottom in both oceans.
George I. Matsumoto +2 more
openaire +3 more sources
Hydrozoa, fjord Comau, Chile [PDF]
Check List, 2007 The shallow-water hydrozoan fauna of fjord Comau is surveyed. A total of thirty three species were recorded. They have been assigned to eight families of Athecata, eight families of Thecata, two families of Narcomedusae and one family of Trachymedusae ...
Horia Galea +2 more
doaj +3 more sources
Atlas of the neuromuscular system in the Trachymedusa
Journal of Comparative Neurology, 2019 Abstract Cnidaria is the sister taxon to bilaterian animals, and therefore, represents a key reference lineage to understand early origins and evolution of the neural systems. The hydromedusa Aglantha digitale is arguably the best electrophysiologically studied jellyfish ...
Tigran P. Norekian, Leonid L. Moroz
openaire +4 more sources
Frontiers in Marine Science, 2020 Several species of small, red, deep-sea Trachymedusae have been described and then re-described over the past 20 years, leading to some confusion in the scientific literature.
George I. Matsumoto +4 more
doaj +1 more source