Alexandra K. Schnell

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Climate influences the distribution of organisms because of the thermal sensitivity of biochemical processes. Animals may compensate for the effects of variable temperatures, and plastic responses may facilitate radiation into different climates. The tropical fish Oreochromis mossambicus has radiated into climates that were thought to be thermally(More)
Animals attempt to maximize their reproductive fitness by employing discrimination tactics that increase their fertilization success. Semelparous species are faced with high energy and time constraints. These constraints are predicted to affect the extent of discrimination tactics that may be employed. The semelparous giant Australian cuttlefish, Sepia(More)
Vertebrates with laterally placed eyes typically exhibit preferential eye use for ecological activities such as scanning for predators or prey. Processing visual information predominately through the left or right visual field has been associated with specialized function of the left and right brain. Lateralized vertebrates often share a general pattern of(More)
Many animals produce multiple displays during agonistic interactions, but the roles of these displays often remain ambiguous. The hierarchical signaling hypothesis has been proposed to explain their occurrence and posits that different displays convey different levels of aggressive intent, allowing signalers to communicate graded series of threats. This(More)
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