Results 101 to 110 of about 32,092 (208)

The gastropod-symbiotic sea anemone genus Isosicyonis Carlgren, 1927 (Actiniaria : Actiniidae): a new species from the Weddell Sea (Antarctica) that clarifies the taxonomic position of the genus [PDF]

open access: yes, 2008
A second species of the sea anemone genus Isosicyonis is described and illustrated from 16 specimens collected in the Weddell Sea (Antarctica) on the Polarstern cruises ANT XVII/3, ANT XXI/2 and ANT XXIII/8. Isosicyonis striata n. sp.
López González, Pablo José   +1 more
core   +3 more sources

The complete mitogenome of brownbranded moon jellyfish Aurelia limbata (Cnidaria, Semaeostomeae, Ulmaridae) with phylogenetic analysis

open access: yesMitochondrial DNA. Part B. Resources, 2019
In this study, the complete mitogenome of brownbranded moon jellyfish Aurelia limbata (Cnidaria, Semaeostomeae, Ulmaridae) was sequenced and analyzed.
Mustafa Zafer Karagozlu   +3 more
doaj   +1 more source

Primate phylogeny: molecular evidence for a pongid clade excluding humans and a prosimian clade containing tarsiers [PDF]

open access: yes, 2009
Interpretations of molecular data by the modern evolution theory are often sharply inconsistent with paleontological results. This is to be expected since the theory is only true for microevolution and yet fossil records are mostly about macroevolution.
Shi Huang
core   +1 more source

The largest reservoir of mitochondrial introns is a relic of an ancestral split gene [PDF]

open access: yes, 2010
In eukaryotes, introns are located in nuclear and organelle genes from several kingdoms (ref. 1-4). Large introns (0.1 to 5 kbp) are frequent in mitochondrial genomes of plant and fungi (ref.
Cyril Ferandon   +5 more
core   +1 more source

Cryptic Species: A Mismatch between Genetics and Morphology in Millepora [PDF]

open access: yes, 2012
Millepore morphology is highly variable and shows signs of phenotypic plasticity. Two species of Millepora are present around the islands of the Bahamas: one exhibiting a strong, blade-like structure, Millepora complanata, and the other having a delicate
Greenstein, Benjamin J., Tepper, Craig
core   +1 more source

Morphological and Molecular Identification of Porpita porpita (Hydrozoa: Porpitidae) Larval and Colonial Phases

open access: yesDiversity
Porpita porpita is a colonial polymorphic hydrozoan distributed in temperate and tropical zones. This species, like most hydrozoans, possesses a metagenetic life cycle with alternating life forms: medusa stage, polypoid colony, and planula larva. However,
Jeimy Denisse Santiago-Valentín   +5 more
doaj   +1 more source

Parallel evolution of gravity sensing

open access: yesFrontiers in Cell and Developmental Biology
Omnipresent gravity affects all living organisms; it was a vital factor in the past and the current bottleneck for future space exploration. However, little is known about the evolution of gravity sensing and the comparative biology of gravity reception.
Daria Y. Romanova   +2 more
doaj   +1 more source

Statistical relationships of cnidocyst sizes in the sea anemone Oulactis muscosa (Actiniaria: Actiniidae) [PDF]

open access: yes, 2011
This study analysis the multivariate statistical relationships among cnidocyst types and tissues in terms of cnidocyst capsule size in the sea anemone O. muscosa.
Acuña, Fabian Horacio
core  

Food habits and dietary variability of pelagic nekton off Oregon and Washington, 1979-1984 [PDF]

open access: yes, 1987
The food habits of 20 species of pelagic nekton were investigated from collections made with small-mesh purse seines from 1979-84 off Washington and Oregon. Four species (spiny dogfish, Squalus acanthias; soupfin shark, Galeorhinus zyopterus; blue shark,
Brodeur, Richard D.   +2 more
core  

Signaling Mechanism of Budding, Proliferation, and Tissue Regeneration in Cnidaria

open access: yesCurrent Issues in Molecular Biology
Phylum Cnidaria occupies an early branching position in the evolution of eukaryotes, establishing both close and distant relationships with most other eukaryotic metazoans. Budding encompasses the complete processes of cell proliferation, differentiation,
Jie Lv   +6 more
doaj   +1 more source

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