Results 1 to 10 of about 39 (28)

Vertical distribution of megafauna on the Bering Sea slope based on ROV survey [PDF]

open access: yesPeerJ, 2020
Video surveys were carried out during the 75th cruise of the RV Akademik M.A. Lavrentyev (June 2016) along the northern slope of the Volcanologists Massif, in the south-western Bering Sea. The seafloor was explored using the ROV Comanche 18.
Elena Rybakova   +4 more
doaj   +4 more sources

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

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   +3 more sources

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

Optical observations and spatio-temporal projections of gelatinous zooplankton in the Fram Strait, a gateway to a changing Arctic Ocean

open access: yesFrontiers in Marine Science, 2023
Global warming causes profound environmental shifts in the Arctic Ocean, altering the composition and structure of communities. In the Fram Strait, a transitional zone between the North-Atlantic and Arctic Ocean, climate change effects are particularly ...
Dmitrii Pantiukhin   +7 more
doaj   +2 more sources

Environmental DNA surveys detect distinct metazoan communities across abyssal plains and seamounts in the western Clarion Clipperton Zone. [PDF]

open access: yesMol 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

Voragonema tatsunoko (Trachymedusae: Rhopalonematidae), a new species of benthopelagic medusa, host to the hyperiid amphipod Mimonectes spandli (Physosomata: Mimonectidae)

open access: yesZootaxa, 2010
Large numbers of a distinctive trachymedusa were observed at 1967 m depth just above the bottom in Suruga Bay, Japan, during a dive by the crewed submersible Shinkai 2000 in April 2002. Two individuals were collected and proved to be an undescribed species, herein described as Voragonema tatsunoko sp. nov. This species is characterised by the number (9)
Lindsay, Dhugal, Pagès, Francesc
openaire   +3 more sources

Vampyrocrossota childressi, a new genus and species of black medusa from the Bathypelagic zone off California (Cnidaria: Trachymedusae: Rhopalonematidae)

open access: yesOceanographic Literature Review, 1993
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
E. Thuesen
openaire   +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

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   +1 more source

Pan‐Arctic distribution modeling reveals climate‐change‐driven poleward shifts of major gelatinous zooplankton species

open access: yesLimnology and Oceanography, Volume 69, Issue 6, Page 1316-1334, June 2024.
Abstract Anthropogenic activities, including climate change, are hypothesized to cause increases in gelatinous zooplankton population sizes and blooms. In the most rapidly changing ecosystem, the Arctic Ocean, this hypothesis has not yet been verified, and gelatinous zooplankton is commonly excluded from large‐scale modeling studies. Our modeling study
Dmitrii Pantiukhin   +2 more
wiley   +1 more source

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