Results 31 to 40 of about 1,571 (170)

Discovery, prevalence, and persistence of novel circular single-stranded DNA viruses in the ctenophores Mnemiopsis leidyi and Beroe ovata

Frontiers in Microbiology, 2015
Gelatinous zooplankton, such as ctenophores and jellyfish, are important components of marine and brackish ecosystems and play critical roles in aquatic biogeochemistry.
Mya eBreitbart, Bayleigh E Benner, Parker E Jernigan, Karyna eRosario, Laura M Birsa, Laura M Birsa, Rachel eHarbeitner, Sidney eFulford, Carina eGraham, Anna eWalters, Dawn B Goldsmith, Stella A Berger, Stella A Berger, Jens C Nejstgaard, Jens C Nejstgaard   +14 more
doaj   +1 more source

Cortical cytasters: a highly conserved developmental trait of Bilateria with similarities to Ctenophora

EvoDevo, 2011
Background Cytasters (cytoplasmic asters) are centriole-based nucleation centers of microtubule polymerization that are observable in large numbers in the cortical cytoplasm of the egg and zygote of bilaterian organisms.
Salinas-Saavedra Miguel, Vargas Alexander O   +1 more
doaj   +1 more source

Interannual variation in the composition of the assemblages of medusae and ctenophores in St. Helena Bay, Southern Benguela Ecosystem

Scientia Marina, 2000
The assemblages of medusae and ctenophores were examined from samples collected each winter from St Helena Bay, over the 10-year period 1988-1997.
Emmanuelle Buecher, Mark John Gibbons
doaj   +1 more source

The sex lives of ctenophores: the influence of light, body size, and self-fertilization on the reproductive output of the sea walnut, Mnemiopsis leidyi [PDF]

PeerJ, 2016
Ctenophores (comb jellies) are emerging as important animals for investigating fundamental questions across numerous branches of biology (e.g., evodevo, neuroscience and biogeography).
Daniel A. Sasson, Joseph F. Ryan
doaj   +2 more sources

Nuclear receptors from the ctenophore Mnemiopsis leidyi lack a zinc-finger DNA-binding domain: lineage-specific loss or ancestral condition in the emergence of the nuclear receptor superfamily?

EvoDevo, 2011
Background Nuclear receptors (NRs) are an ancient superfamily of metazoan transcription factors that play critical roles in regulation of reproduction, development, and energetic homeostasis.
Reitzel Adam M, Pang Kevin, Ryan Joseph F, Mullikin James C, Martindale Mark Q, Baxevanis Andreas D, Tarrant Ann M   +6 more
doaj   +1 more source

Improved histological fixation of gelatinous marine invertebrates

Frontiers in Zoology, 2021
Background Gelatinous zooplankton can be difficult to preserve morphologically due to unique physical properties of their cellular and acellular components.
Dorothy G. Mitchell, Allison Edgar, Mark Q. Martindale   +2 more
doaj   +1 more source

The first identification of complete Eph-ephrin signalling in ctenophores and sponges reveals a role for neofunctionalization in the emergence of signalling domains

BMC Evolutionary Biology, 2019
Background Animals have a greater diversity of signalling pathways than their unicellular relatives, consistent with the evolution and expansion of these pathways occurring in parallel with the origin of animal multicellularity.
Arunkumar Krishnan, Bernard M. Degnan, Sandie M. Degnan   +2 more
doaj   +1 more source

First records of two lobate comb-jellies (Ctenophora) from the Pakistani coast [PDF]

Check List, 2015
The knowledge on the comb-jellies faunistics along the southern Asian coast is very scarce. For some countries such as Pakistan there are no previous formal records of ctenophores. This study is a first survey to the group diversity along Pakistani coast,
Shahnawaz Gul, Otto Oliveira
doaj   +3 more sources

Three Distinct Views of Deep Pelagic Community Composition Based on Complementary Sampling Approaches

Frontiers in Marine Science, 2022
Our perception of deep-sea communities has evolved as various sampling approaches have captured different components of deep-sea habitats. We sampled midwater zooplankton assemblages in Monterey Bay, California to quantify community composition ...
Elizabeth D. Hetherington, C. Anela Choy, Erik V. Thuesen, Steven H. D. Haddock   +3 more
doaj   +1 more source

Gelatinous zooplankton net-collected in the Gulf of Maine and adjacent submarine canyons: new species, new family (Jeanbouilloniidae), taxonomic remarks and some parasites

Scientia Marina, 2006
A systematic account is provided of the siphonophores, medusae, ctenophores, molluscs and salps net-collected in basins of the Gulf of Maine and adjacent canyons during three cruises carried out in September 2002, 2003 and 2004.
Francesc Pagès, Per Flood, Marsh Youngbluth   +2 more
doaj   +1 more source