Results 1 to 10 of about 116 (86)

Two swimming modes in Trachymedusae; bell kinematics and the role of giant axons.

open access: yesJ 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   +2 more sources

“Little Red Jellies” in Monterey Bay, California (Cnidaria: Hydrozoa: Trachymedusae: Rhopalonematidae)

open access: yesFrontiers 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   +2 more sources

Occurrence of Haliscera bigelowi Kramp, 1947 (Hydromedusae: Trachymedusae: Halicreatidae) in Northern Arabian Sea, India [PDF]

open access: yesCheck 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   +4 more sources

Diversity and life-cycle analysis of Pacific Ocean zooplankton by videomicroscopy and DNA barcoding: Hydrozoa. [PDF]

open access: yesPLoS 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

Check List of Iran marine Cnidarians (Animalia, Cnidaria) [PDF]

open access: yesIranian 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   +2 more sources

Hydrozoa, fjord Comau, Chile [PDF]

open access: yesCheck 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   +4 more sources

Towards understanding the phylogenetic history of Hydrozoa: Hypothesis testing with 18S gene sequence data

open access: yesScientia Marina, 2000
Although systematic treatments of Hydrozoa have been notoriously difficult, a great deal of useful information on morphologies and life histories has steadily accumulated. From the assimilation of this information, numerous hypotheses of the phylogenetic
A. G. Collins
doaj   +2 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

open access: yesScientia 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   +2 more sources

Glaciambulata neumayeri gen. et sp. nov., a new Antarctic trachymedusa (Cnidaria: Hydrozoa), with a revision of the family Ptychogastriidae

open access: yesEuropean 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   +1 more source

Maximum depth extensions for Hydrozoa, Tunicata and Ctenophora

open access: yesMarine Biology, 2023
The observation of singleton or rare species in the deep sea is extremely valuable for gaining a census of biodiversity. At hadal depths (> 6000 m), these records provide a more complete picture of the vertical distribution of fauna.
A. Jamieson, D. Lindsay, H. Kitazato
semanticscholar   +1 more source

Home - About - Disclaimer - Privacy