Coupling Mechanism between Reproductive Strategies and Foraging Behavior of Giant Pandas: Energy-nutrition-temperature Correlation Effect

The delayed blastocyst implantation, the rapid fetal development and the reproductive strategy of giving birth to short size cubs in autumn are closely related to the energy content and nutrients in the food structure of female giant pandas during pregnancy, thus forming the unique foraging behavior pattern of wild giant pandas. That is to say, wild giant pandas take bamboo shoots and young bamboo leaves rich in energy and nutrients as their staple food, and feed on a small amount of bamboo stems, bamboo branches, old bamboo leaves and different bamboo species, and migrate vertically with the temperature changes of the habitat environment. In this paper, the coupling energy-nutrition-temperature correlation effect mechanism between reproductive strategies and foraging behavior of giant pandas was summarized and demonstrated in the following four aspects: seasonal change pattern of habitat climate and vertical migration characteristics of wild giant pandas, phenological regularity of subalpine bamboos and foraging behavior habits of wild giant pandas, nutrition and energy differentiation of staple bamboo organs and reproductive physiological strategies of wild giant pandas, and physiological basis of nutrition and energy of staple food bamboo.