Two swimming modes in Trachymedusae; bell kinematics and the role of giant axons. [PDF]
J Exp Biol, 2021 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 +8 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 +5 more sources
Macroscale abundance patterns of hydromedusae in the temperate Southwestern Atlantic (27°-56° S). [PDF]
PLoS One, 2019 Gelatinous organisms are crucial components of marine ecosystems and some species imply social and economic consequences. However, certain geographic areas, such as the temperate Southwestern Atlantic (SWA, 27 - 56 S), remain understudied in terms of ...
Dutto MS +5 more
europepmc +3 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 +6 more sources
Environmental DNA surveys detect distinct metazoan communities across abyssal plains and seamounts in the western Clarion Clipperton Zone. [PDF]
Mol Ecol, 2020 Abstract The deep seafloor serves as a reservoir of biodiversity in the global ocean, with >80% of invertebrates at abyssal depths still undescribed. These diverse and remote deep‐sea communities are critically under‐sampled and increasingly threatened by anthropogenic impacts, including future polymetallic nodule mining.
Laroche O +3 more
europepmc +2 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
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 +7 more sources
Origin and biogeography of the deep-water Mediterranean Hydromedusae including the description of two new species collected in submarine canyons of Northwestern Mediterranean [PDF]
Scientia Marina, 1998 Two new species of hydromedusae (Foersteria antoniae and Cunina simplex) are described from plankton collected in sediment traps placed in the Lacaze-Duthiers Submarine Canyon and along Banyuls-sur-Mer coast (northwestern Mediterranean).
J. M. Gili +5 more
doaj +4 more sources
Hidden gems: Scattered knowledge hampered freshwater jellyfish research over the past one-and-a-half centuries. [PDF]
Ecol EvolApproximately 150 years of research on freshwater jellyfish globally have resulted in a considerable amount of information. However, this is not comprehensively available to most researchers worldwide. Scattered information allows only for a fragmented view of the research field, which mediated by climate change received increasing importance.
Lüskow F +10 more
europepmc +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