Journal of Experimental Biology
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- Highwire, Gale, Rupress, Company of Biologists, Endocrine, Ama, Csh, Aaas, Aacr, Proquest, Nephrology, and CSA
Habituation under natural conditions: model predators are distinguished by approach direction.
We tested whether the fiddler crab Uca vomeris distinguishes objects purely by their sensory signature or whether identification also involves more complex attributes such as the direction from which an object approaches. We found that crabs habituated their escape responses after repeated presentat...
The distribution and expression of CFTR restricts electrogenic anion secretion to the ileum of the brushtail possum, Trichosurus vulpecula.
We investigated whether electrogenic anion secretion occurs in possum duodenum and jejunum and determined the role of CFTR in possum intestinal anion secretion. Prostaglandin E(2) (PGE(2)) and forskolin stimulated a large increase in ileal short-circuit current (I(sc)), consistent with electrogenic...
Experimental analysis of the blood-sucking mechanism of female mosquitoes.
Pioneering studies have been conducted to reveal the functional characteristics of the two-pump system of the female mosquito. Mosquitoes are equipped with two pumping organs located in the head: the cibarial (CP) and the pharyngeal (PP) pumps. To analyze the functional relationship...
Evidence of a central pattern generator regulating spermathecal muscle activity in Locusta migratoria and its coordination with oviposition.
These results provide further insight into the intricate coordination and control of reproductive tissues underlying reproductive behaviours in locusts....
Steady or unsteady? Uncovering the aerodynamic mechanisms of insect flight.
Environmental differences in substrate mechanics do not affect sprinting performance in sand lizards (Uma scoparia and Callisaurus draconoid...
We measured the kinematics of sprinting and characterized differences in grain size distribution and surface strength of the soil in both habitats. Although wash sand had a surface strength (15.4±6.2 kPa) that was more than three times that of dune sand (4.7±2.1 kPa), both species ran with similar...
Ballistic movements of jumping legs implemented as variable components of cricket behaviour.
Ballistic accelerations of a limb or the whole body require special joint mechanisms in many animals. Specialized joints can be moved by stereotypic or variable motor control during motor patterns with and without ballistic components. As a model of variable motor control, the specialized femur-tibi...
Biparental mucus feeding: a unique example of parental care in an Amazonian cichlid.
We investigated the relationship between parents and offspring during a breeding cycle, determining both mucus composition (total protein, cortisol, immunoglobulin, and Na(+), K(+) and Ca(2+) concentrations) and the behavioural dynamics of the parent-offspring relationship. Over the course of a bree...
Convergence of carbohydrate-biased intake targets in caged worker honeybees fed different protein sources.
We investigated whether bees maintain their intake target when confined to pairs of imbalanced complementary diets varying in protein to carbohydrate (P:C) ratio. Diets were formulated using three protein sources [casein, royal jelly or Feed-Bee (a natural pollen substitute)] and sucrose. Within eac...
Behavioral and neurophysiological responses of an insect to changing ratios of constituents in host plant-derived volatile mixtures.
We investigated the effect of changing ratios of host plant volatile constituents on herbivore insect attraction and olfactory information processing. We tested a synthetic mixture of bioactive peach shoot volatiles with different concentrations of one of the mixture constituents, benzonitrile, on o...