منابع مشابه
Anti-predator defence drives parallel morphological evolution in flea beetles.
Complex morphological or functional traits are frequently considered evolutionarily unique and hence useful for taxonomic classification. Flea beetles (Alticinae) are characterized by an extraordinary jumping apparatus in the usually greatly expanded femur of their hind legs that separates them from the related Galerucinae. Here, we examine the evolution of this trait using phylogenetic analysi...
متن کاملJumping mechanisms and performance in beetles. I. Flea beetles (Coleoptera: Chrysomelidae: Alticini).
The present study analyses the anatomy, mechanics and functional morphology of the jumping apparatus, the performance and the kinematics of the natural jump of flea beetles (Coleoptera: Chrysomelidae: Galerucinae: Alticini). The kinematic parameters of the initial phase of the jump were calculated for five species from five genera (average values from minimum to maximum): acceleration 0.91-2.25...
متن کاملSpring-loaded Syringe for Multiple Rapid Injections
Mesotherapy refers to multiple injections of small quantity of the drug over a large area. The mesoguns available are expensive and the motor-driven models tends to waste the expensive material to be injected since the plunger stops after injecting without recoil. We searched for a less expensive device which would inject like the mesogun and still not waste the solution. On searching the web, ...
متن کاملSpring-loaded Compounds in Organic Synthesis
INTRODUCTION Ring strain is a property possessed by small molecules and is recognized by chemists as an exceptionally efficient and practical tool for attaining challenging transformations. Organic chemistry has witnessed tremendous progress towards this end with the development of a plethora of methods that can harvest the high energy of a strained system and direct it into productive pathways...
متن کاملResponses of the crucifer flea beetle to Brassica volatiles in an olfactometer.
A suite of commercially available volatile compounds was tested in an olfactometer bioassay for responses by the crucifer flea beetle (Phyllotreta cruciferae). Flea beetles were inhibited by exposure to hexane, pentane, and ethanol. Allyl-isothiocyanate, a crucifer-specific volatile, was moderately attractive to spring and early fall flea beetles, but inhibitory to late fall flea beetles. Sprin...
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ژورنال
عنوان ژورنال: Journal of Experimental Biology
سال: 2016
ISSN: 1477-9145,0022-0949
DOI: 10.1242/jeb.144717