...Chloé Suzanne Berger; Nadia Aubin-Horth ABSTRACT Detecting the presence of a parasite within its host is crucial to the study of host–parasite interactions. The Schistocephalus solidus –threespine stickleback pair has been studied extensively to investigate host phenotypic alterations associated...

.... Sensory systems must balance rapid detection of a stimulus with perception of fine details that enable discrimination between similar stimuli. Here, we show that in a species of weakly electric fish, Apteronotus leptorhynchus , two coding strategies are employed for these separate behavioral tasks. Using...

..., we addressed the contribution of three different but synergetic mechanisms by which electrosensory signals attenuate with object distance. Using novelty responses as an indicator of object detection we confirmed that the active electrosensory detection range is very short. Behavioral data also...

...Maria Wilson; Henriette B. Schack; Peter Teglberg Madsen; Annemarie Surlykke; Magnus Wahlberg SUMMARY Toothed whales emit high-powered ultrasonic clicks to echolocate a wide range of prey. It may be hypothesized that some of their prey species have evolved capabilities to detect and respond...

...). Table 3. Estimated color detection limit Visual angle (degrees) Blue 1.18 (1.06-1.29) Green 1.53 (1.24-1.78) Red 0.96 (0.77-1.11) Estimated visual angles (95% confidence limits in parentheses) that provide 60% correct choice for three colors. Fig. 3. Correct...

... in body size is accompanied by 100% greater precision in single target detection. This improvement in spatial resolving power is much stronger than that predicted by surveying ommatidial arrays, indicating that measuring eye optics alone is insufficient for predictions of single object resolution,unless...

... that they attacked H. humuli within the ‘clutter overlap zone’. The bats did not change their signal design in any marked manner for this specific task. Measurements of echoes from a moth 10 cm above or below the grass tops showed that information for detecting the moths was available to the bats. Nevertheless...