Results 21 to 30 of about 3,212 (211)

The genetic factors of bilaterian evolution

open access: yeseLife, 2020
The Cambrian explosion was a unique animal radiation ~540 million years ago that produced the full range of body plans across bilaterians. The genetic mechanisms underlying these events are unknown, leaving a fundamental question in evolutionary biology ...
Peter Heger   +4 more
doaj   +1 more source

A Screen for Gene Paralogies Delineating Evolutionary Branching Order of Early Metazoa

open access: yesG3: Genes, Genomes, Genetics, 2020
The evolutionary diversification of animals is one of Earth’s greatest marvels, yet its earliest steps are shrouded in mystery. Animals, the monophyletic clade known as Metazoa, evolved wildly divergent multicellular life strategies featuring ciliated ...
Albert Erives, Bernd Fritzsch
doaj   +1 more source

Ctenophora pulchella var. smithii H. Schönf.

open access: yes, 2023
<i>Ctenophora pulchella</i> var. <i>smithii</i> (Ralfs in A.Pritch.) H.Schönf. 1907: 104, 248, <i>invalid</i> = ?? <p> Basionym: <i>Synedra smithii</i> Ralfs in A.Pritch. 1861: 786</p> &
Williams, David M., Vijver, Bart Van De
core   +1 more source

Initial discovery of microplastic pollution in Mnemiopsis leidyi (Ctenophora: Lobata)

open access: yesWater Biology and Security, 2023
The production of plastics has exponentially increased over time such that the observation of microplastics in the oceans has become a major concern given how frequently these particles and marine biota may interact.
Mariana Beatriz Paz Otegui   +3 more
doaj   +1 more source

Environmental patterns and biomass distribution of gelatinous macrozooplankton. Three study cases in the South-western Atlantic Ocean

open access: yesScientia Marina, 2000
Periodic swarms or blooms of gelatinous macrozooplankton have a negative effect on many human activities such as tourism, fisheries, and industry, but for several reasons (sampling procedures, underestimation of their real abundance, etc.), they have ...
H. W. Mianzan, R. A. Guerrero
doaj   +1 more source

The complete mitochondrial genome of the Ctenophore Beroe cucumis, a mitochondrial genome showing rapid evolutionary rates

open access: yesMitochondrial DNA. Part B. Resources, 2019
We described the complete mitochondrial genome of the Ctenophore Beroe cucumis, which is a circular molecule of 10,487 bp in length. The new mitochondrial genome comprised only 12 genes, making it one of the smallest animals’ mtDNA.
Minxiao Wang, Fangping Cheng
doaj   +1 more source

A sticky thicket of glue cells: A comparative morphometric analysis of colloblasts in 20 species of comb jelly (phylum Ctenophora)

open access: yesCiencias Marinas, 2020
Ctenophores in the class Tentaculata are distinct from Cnidarians in that they use sticky, not stinging, tentacles to capture and subdue their prey.
Nicholas D Leonardi   +2 more
doaj   +1 more source

Aggregations of a Sessile Ctenophore, Coeloplana sp., on Indo-West Pacific Gorgonians

open access: yesDiversity, 2023
We document the benthic ctenophores Coeloplana sp. and Vallicula multiformis from Oman, extending their geographic range. A new Coeloplana species was found forming aggregations on gorgonians of two octocoral host genera, Melithaea and Euplexaura ...
Kaveh Samimi-Namin   +5 more
doaj   +1 more source

Ctenophora pulchella D. M. Williams & Round 1986

open access: yes, 2023
<i>Ctenophora pulchella</i> (Kütz.) D.M.Williams & Round (Figs 1–31) <p> Basionym: <i>Synedra pulchella</i> Kütz. 1844: 68, pl. 29, fig.
Williams, David M., Vijver, Bart Van De
core   +1 more source

Collagen IV and basement membrane at the evolutionary dawn of metazoan tissues

open access: yeseLife, 2017
The role of the cellular microenvironment in enabling metazoan tissue genesis remains obscure. Ctenophora has recently emerged as one of the earliest-branching extant animal phyla, providing a unique opportunity to explore the evolutionary role of the ...
Aaron L Fidler   +9 more
doaj   +1 more source

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