MATERNAL ANDROGENS INCREASE SIBLING AGGRESSION, DOMINANCE, AND COMPETITIVE ABILITY IN THE SIBLICIDAL BLACK-LEGGED KITTIWAKE (RISSA TRIDACTYLA).

Maternal androgens increase sibling aggression, dominance, and competitive ability in the siblicidal black-legged kittiwake (Rissa tridactyla).

Animals and plants routinely produce more offspring than they can afford to rear.Mothers can favour certain young by conferring on them competitive advantages such as a leading position in the birth sequence, more resources or hormones.Avian mothers create hatching asynchrony within a clutch and at the same time bestow the eggs with different conce

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A GIS-Based Modeling Approach for Determining the Efficiency of the Traffic System between Ancient Military Castles

beer button down shirts for men Ancient Chinese military castles were equipped with rapid transportation routes for mutual aid, and this was an essential indicator of regional defense capability.However, since the sites of these transportation routes have mostly disappeared, it is not easy to examine the actual distribution of these routes.It is ne

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The mechanism of selecting priority options and sequence of solutions to ensure the safety of towing caravan navigation

The paper considers navigational safety movement of the towed object and tugboat.Some methods of alternatives choice of decision-maker persons (DMP) to manage the safety of towing a caravan have been presented.Examples of navigation safety conditions, their operational relationship, critical and emergency character with respect to the predetermined

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