Boo! How Do Mexican Cavefish Escape Predators?

When startled, do all fish respond the same way? A few fish, like Mexican cavefish, have evolved in unique environments without any predators. To see how this lack of predation impacts escape responses that are highly stereotyped across fish species, scientists explored this tiny fish to determine if there are evolved differences in them. Findings reveal that the dramatic ecological differences between cave and river environments contribute to differences in escape behavior in blind cavefish and river-dwelling surface cavefish.

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Repeated Pregnancy Loss May Be Tied to the Olfactory System, Weizmann Institute Scientists Find

Pregnant mice typically miscarry when exposed to the odor of a male who did not father their pups. Weizmann research provides evidence that the same effect occurs in women with unexplained repeated pregnancy loss (uRPL), who apparently process messages about male body odor differently. This could help identify causes and prevention of uRPL.

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Weizmann Institute Scientists Develop “Sniff Test” That Predicts Recovery of Consciousness in Brain-Injured Patients

In another example of the power of the sense of smell, Prof. Noam Sobel, Dr. Anat Arzi, and colleagues have developed a “sniff test” that can help diagnose degree of brain injury in patients in a vegetative state. The test also predicted – with 100% accuracy – which patients were most likely to regain consciousness.

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