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In certain populations, female Japanese macaques (Macaca fuscata) mount both males and females. Vasey (2007) proposed that female–female sexual mounting in Japanese macaques may be a neutral evolutionary by-product of a purported adaptation, namely, female–male mounting. In this study, we aim to further examine the proposed link between female–male and female–female mounting in Japanese macaques by...
We compare the effects of psychoactive drugs such as morphine and amphetamine on the synaptic organization of neurons in the orbital frontal (OFC) and medial frontal (mPFC) regions in the rat. Both regions are altered chronically by exposure to intermittent doses of either drug but the effects are area-dependent. For example, whereas morphine produces increased spine density in OFC but decreased spine...
. It is well known that prey of different size and morphology often use different antipredator strategies. The prevailing notion is that this occurs because size, morphology and weaponry determine the relative effectiveness of alternative strategies, and nowhere is this assumption more entrenched than in our view of the basic decision to stay, fight or flee. Here, we use observations of coyote (Canis latrans) ...
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