Results 11 to 20 of about 195 (128)

Drivers behind the diversity and distribution of a widespread midwater narcomedusa

open access: yesLimnology and Oceanography, 2023
AbstractNarcomedusae play a key role as top‐down regulators in the midwater, the largest and most understudied biome on Earth. Here, we used ecological niche modeling in three‐dimensions (3D), ecomorphology, and phylogeny, to answer evolutionary and ecological questions about the widespread narcomedusan genus Solmissus.
Gerlien Verhaegen   +2 more
exaly   +4 more sources

New records of Pegantha spp. (Hydrozoa: Narcomedusae) off Northern Brazil

open access: yesPapéis Avulsos de Zoologia, 2018
Specimens of Pegantha laevis H.B. Bigelow, 1909 and Pegantha triloba Haeckel, 1879 were found in oceanic waters off the northern Brazilian coast. The former species is clearly distinct due to the thickness and shape of peripheral channels, while the ...
Everton Giachini Tosetto   +2 more
doaj   +6 more sources

Piggybacking pycnogonids and parasitic narcomedusae on Pandea rubra (Anthomedusae, Pandeidae)

open access: yesPlankton and Benthos Research, 2007
Associations between pycnogonids and the mesopelagic anthomedusan Pandea rubra are reported from two in situ video footage records off the Pacific coast of northern Japan, and from a plankton sample collected in the Weddell Sea (one juvenile of the pycnogonid Pallenopsis (Bathypallenopsis) tritonis).
Jordi Corbera   +2 more
exaly   +6 more sources

Morphology and distribution of a deep-water Narcomedusa (Solmarisidae) from the northeast Pacific

open access: yesScientia Marina, 2000
Specimens of Solmaris sp. (Solmarisidae, Narcomedusae) with only four tentacles were collected in the northeast Pacific. The majority were collected in Canadian Pacific waters by Tucker trawl from stations outside the 500-m contour off the west coast of ...
Mary Needler Arai   +2 more
doaj   +6 more sources

Hydrozoa, fjord Comau, Chile. [PDF]

open access: yesCheck List, 2007
The shallow-water hydrozoan fauna of fjordComau is surveyed. A total of thirty three specieswere recorded. They have been assigned to eightfamilies of Athecata, eight families of Thecata,two families of Narcomedusae and one family ofTrachymedusae.
Galea, H. R.   +2 more
doaj   +5 more sources

Narcomedusae Haeckel 1879

open access: yes, 2021
Order Narcomedusae Remarks: The families of the Narcomedusae have recently been reorganized by Lindsay et al. (2017) using DNA data. Bentlage et al. (2018) added more sequences. The 16S sequences of these studies and the ones from the present study were combined to get a maximum likelihood tree (Fig. 48).
Schuchert, Peter, Collins, Richard
openaire   +3 more sources

Cnidarian Parasites on Solmissus incisa, a Narcomedusa

open access: yesScientia Marina, 2000
A narcomedusa, Solmissus incisa, was collected off central California in the Monterey Submarine Canyon at 230 m in October 1996. The medusa was viewed and collected from the RV Point Lobos using the remotely operated vehicle (ROV) Ventana.
Dawn Alexandra Osborn
doaj   +4 more sources

Solution to the phylogenetic enigma of Tetraplatia , a worm-shaped cnidarian [PDF]

open access: yesBiology Letters, 2006
Tetraplatia is a genus containing two species of pelagic cnidarians of curious morphology. Their vermiform shape and four swimming flaps are difficult to relate to the features of other cnidarians, thus obscuring their phylogenetic affinities.
Allen G Collins   +2 more
exaly   +3 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

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

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