Scorpions (order Scorpiones) are unusual among arthropods, both for the extreme heteronomy of their bauplan and for the high gene family turnover exhibited in their genomes. These phenomena appear to be correlated, as two scorpion species have been shown to possess nearly twice the number of Hox genes present in most arthropods. Segmentally offset anterior expression boundaries of a subset of H...

Temperature can profoundly affect many physiological processes, including muscle performance. Many ectotherms appear sensitive to this relationship, choosing times and locations of activity permitting high body temperatures and, thus, quick escape from predators. High body temperatures, however, can lead to dehydration, which in turn affects muscle performance. Striped bark scorpions Centruroid...

S Navidpour , S. , Kovar í k , F. , Fet , V. , and Soleglad , M. E. ( 2008 ) . Scorpions of Iran (Arachnida, Scorpiones). Part III. Ilam Province . Euscorpius 69 , 1 – 29 . Polis , G. A. (ed.) ( 1990 ) . “ The Biology of Scorpions . ” Stanford University Press , Stanford, CA . Prendini , L. ( 2000 ) . Phylogeny and classifi cation of the superfamily Scorpionoidea Latreille 1802 (Chelicerata, Sc...

BACKGROUND The different features of scorpions can be successfully described by their nesting and burrowing behaviors. There is little information about burrowing activity of Iranian scorpions. METHODS The current study was performed to compare the burrowing behavior between two burrowing Iranian scorpions, Scorpio maurus and Odonthubutus bidentatus by describing 30 nests of each species rega...

Khuzestan province has the highest rate of scorpion sting in Iran. This is a study to identify these scorpions in Khuzestan. In this study 418 scorpions were kept in the ethyl alcohol 70%, each being studied by stereomicroscopy and diagnosis key separately. 120 (28.7%) Androctonus crassicauda, 104 (24.9%) Hemiscorpius lepturus, 91 (21.7%) Mesobuthus eupeus, 86 (20.65%) Compsobuthus matthiesseni...

The distribution and behavior of foraging animals usually imply a balance between resource availability and predation risk. In some predators such as scorpions, cannibalism constitutes an important mortality factor determining their ecology and behavior. Climbing on vegetation by scorpions has been related both to prey availability and to predation (cannibalism) risk. We tested different hypoth...

This review describes the history of taxonomic research on scorpions and provides an updated checklist and key of the scorpions currently known in China. This checklist is based on a thorough review of the extant literatures on scorpion species whose presence has been confirmed in China through field expeditions and examination of scorpion collections, excepting a few members that have no clear...

The hypothesis that fluorescence in scorpions functions in the detection of ultraviolet light was tested. We reduced the fluorescence of scorpions by prolonged exposure to ultraviolet light on a 16:8 h light:dark cycle and compared their activity levels and light environment choices to unmodified scorpions in simple arenas that were half in shadow and half exposed to light. Three different ligh...

background: the different features of scorpions can be successfully described by their nesting and burrowing behaviors. there is little information about burrowing activity of iranian scorpions. methods: the current study was performed to compare the burrowing behavior between two burrowing iranian scorpions, scorpio maurus and odonthubutus bidentatus by describing 30 nests of each species rega...

Sky island scorpions shelter under rocks and other surface debris, but, as with other scorpions, it is unclear whether these species select retreat sites randomly. Furthermore, little is known about the thermal preferences of scorpions, and no research has been done to identify whether reproductive condition might influence retreat site selection. The objectives were to (1) identify physical or...