Results 51 to 60 of about 3,826 (235)
Tissue composition of sponges from the Weddell Sea, Antarctica: not much meat on the bones [PDF]
, 1995 The tissue of 31 demosponge and 7 hexachnelhd species was analyzed for its composition of organic and lnorganic matter With one excephon (Hahclona cf gausaana) inorganic matter i e n~ostly the siliceous skeleton, accounted for most of the dry weight ...
Barthel, Dagmar
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A horizontal gene transfer supported the evolution of an early metazoan biomineralization strategy
BMC Evolutionary Biology, 2011 Background The synchronous and widespread adoption of the ability to biomineralize was a defining event for metazoan evolution during the late Precambrian/early Cambrian 545 million years ago.
Wörheide Gert +3 more
doaj +1 more source
Biodiversity of Spongosorites coralliophaga (Stephens, 1915) on coral rubble at two contrasting cold-water coral reef settings [PDF]
, 2015 The authors would like to thank Bill Richardson (Master), the crew of the RRS James Cook, Will Handley and the Holland-I ROV team. We also thank all the specialists in taxonomy that provided important help with identification of species: Professor Paul ...
Henry, Lea-Anne +3 more
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Frontiers in Marine Science, 2020 Siliceous spicules in demosponges exist in a variety of shapes, some of which look like minute spheres of glass. They are called “sterrasters” when they belong to the Geodiidae family (Tetractinellida order) and “selenasters” when they belong to the ...
Paco Cárdenas
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Scientific Reports, 2017 The two major extant groups of siliceous sponges, Demospongiae and Hexactinellida, are generally regarded as sister groups forming the clade Silicea, although the nature of their last common ancestor is uncertain.
Joseph P. Botting +2 more
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Affinities of the family Sollasellidae (Porifera, Demospongiae). II. Molecular evidence [PDF]
, 2007 This is the second part of a revision and re-classification of the demosponge family Sollasellidae, and an example of a successful use of combined morphological and molecular data. Sollasella had been a poorly known, long forgotten taxon, placed incertae
Degnan, Bernard M. +5 more
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The Evolutionary Origin of the Runx/CBFbeta Transcription Factors – Studies of the Most Basal Metazoans [PDF]
, 2008 BACKGROUND. Members of the Runx family of transcriptional regulators, which bind DNA as heterodimers with CBFβ, are known to play critical roles in embryonic development in many triploblastic animals such as mammals and insects.
Eisenstein, Miriam +9 more
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Early evolution of the LIM homeobox gene family
BMC Biology, 2010 Background LIM homeobox (Lhx) transcription factors are unique to the animal lineage and have patterning roles during embryonic development in flies, nematodes and vertebrates, with a conserved role in specifying neuronal identity.
Degnan Bernard M +6 more
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Frontiers in Neural Circuits, 2023 Interkingdom signalling within a holobiont allows host and symbionts to communicate and to regulate each other’s physiological and developmental states.
Xueyan Xiang +5 more
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Archaeal diversity in deep-sea sediments estimated by means of different Terminal-Restriction Fragment Length Polymorphisms (T-RFLP) protocols [PDF]
, 2009 Despite the increasing recognition of the quantitative importance of Archaea in all marine systems, the protocols for a rapid estimate of Archaeal diversity patterns in deep-sea sediments have been only poorly tested yet.
Danovaro, Roberto +3 more
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