Only a specific result about the origin of gnathostome
internal fertilization, which Elga obtained together with a group of colleagues from different countries and was published in Nature a year before her death, should be added as an achievement in palaeontology the most praised by the press of Estonia.
remains include scales from ischnacanthiform acanthodians Gomphonchus sandelensis, Poracanthodes punctatus and Nostolepis striata, as well as acanthodian spine and tooth whorl fragments.
[sz]2M is believed to arise in a basal jawed vertebrate (gnathostome
).[sup] The close proximity of MHC I, MHC II, and [sz]2M implies that they were derived from a common ancestor by tandem ( cis ) duplication.[sup] [sz]2M protein sequences are highly conserved among species, and overall structures are virtually identical.
A sea lamprey glycoprotein hormone receptor similar with gnathostome
thyrotropin hormone receptor.
infection in swamp eels, Fluta alba, in central Thailand.
The research findings described in this media release can be found in the 9 January, 2014 issue of Nature Journal, under the title, "Elephant shark genome provides unique insights into gnathostome
evolution" by Byrappa Venkatesh,1,2, Alison P.
The 13 papers in this collection describe such fish olfaction topics as the development and evolution of the olfactory organ in Gnathostome
fish, responses to amino acids in rainbow trout, olfactory discrimination, recordings of stimulated goldfish, cross-adaptation, alarm reactions, solitary chemosensory cells, the Barbel taste system in catfish and goatfish, taste bud cells and their behavior, the role of gustation in comparisons of species based on volumetric brain data, and taste tests for the nine-spined stickleback from the Moscow River and White Sea basins.
Copulation in antiarch placoderms and the origin of gnathostome
In fact, functional evidence for different aspects of this putative network often conflicts between gnathostome
Such a very fine pattern has been observed on the scales of both agnathans and gnathostome
fishes (Marss 2006) in the Palaeozoic, and some details of the external surface of scales and tubercles have been illustrated in publications on histology (e.g.
Myelin basic proteins (MBPs) are abundant in the myelin sheaths of gnathostome
central nervous system (CNS) and peripheral nervous system (PNS) (Waehneldt et al., 1986) and are a logical starting point for this study.