منابع مشابه
Arachnid envenomation.
This article focuses on the medically relevant arachnid species found in North America and selected other arachnids from around the world. While it is largely still true that the geographic location of the envenomation assists in determining the species responsible, the booming trade in arachnids as exotic pets should prompt the clinician to inquire into this possibility. Expert advice should b...
متن کاملTheory of arachnid prey localization.
Sand scorpions and many other arachnids locate their prey through highly sensitive slit sensilla at the tips (tarsi) of their eight legs. This sensor array responds to vibrations with stimulus-locked action potentials encoding the target direction. We present a neuronal model to account for stimulus angle determination using a population of second-order neurons, each receiving excitatory input ...
متن کاملClass IIa Bacteriocins: Diversity and New Developments
Class IIa bacteriocins are heat-stable, unmodified peptides with a conserved amino acids sequence YGNGV on their N-terminal domains, and have received much attention due to their generally recognized as safe (GRAS) status, their high biological activity, and their excellent heat stability. They are promising and attractive agents that could function as biopreservatives in the food industry. Thi...
متن کاملA new trigonotarbid arachnid from the Coal Measures of Hagen-Vorhalle, Germany
A new trigonotarbid (Arachnida: Trigonotarbida: Trigonotarbidae) is described as Archaeomartus roessleri n. sp. from the Upper Carboniferous (Pennsylvanian; Namurian B, higher Marsdenian) of Hagen-Vorhalle, Germany. Originally assigned to Trigonotarbus johnsoni Pocock, 1911, our new fossil has a distinctly lobed carapace and thus resembles more closely the Early Devonian species Archaeomartus l...
متن کاملStreamlining DNA Barcoding Protocols: Automated DNA Extraction and a New cox1 Primer in Arachnid Systematics
BACKGROUND DNA barcoding is a popular tool in taxonomic and phylogenetic studies, but for most animal lineages protocols for obtaining the barcoding sequences--mitochondrial cytochrome C oxidase subunit I (cox1 AKA CO1)--are not standardized. Our aim was to explore an optimal strategy for arachnids, focusing on the species-richest lineage, spiders by (1) improving an automated DNA extraction pr...
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ژورنال
عنوان ژورنال: Geological Magazine
سال: 1903
ISSN: 0016-7568,1469-5081
DOI: 10.1017/s001675680011252x