Nutrients and energy requirements for crabs and lobsters

In this chapter, a comprehensive analysis of the nutrient and energy requirements essential for the optimal growth and development of crabs and lobsters was presented, emphasizing their significance in aquaculture and commercial production. Delving into the realms of protein, lipid, carbohydrate, vitamin, mineral, and energy necessities, existing research was evaluated while pinpointing knowledge gaps and insights for future investigations. Notably, the spotlight was on three prominent crab species: Eriocheir sinensis, Portunus tribueculatus, and Scylla paramamosain, with E. sinensis standing out as the most extensively studied. Despite significant progress in advancing crab aquaculture, particularly in China, a critical gap in understanding the comprehensive nutrient requirements for these species remains evident. The need for further research was highlighted, especially in exploring the viability of emerging plant-based ingredients as substitutes for conventional feed sources like fishmeal, fish oil, and soybean meal. This shift in perspective underscores the essential role of precise dietary nutrient formulations in optimizing both the size and quality of crab yields, crucial for enhancing industry value. Furthermore, this chapter advocates for future nutritional inquiries to delve beyond mere diet improvement, urging a closer examination of nutrient interactions and impacts on stress management, health promotion, and disease resistance. Such holistic approaches are vital for fostering more efficient and sustainable aquaculture practices. In contrast, this chapter highlights limited research on lobster nutrition, emphasizing the urgent need for tailored studies elucidating species-specific dietary requirements. These efforts are essential for refining feeding strategies and improving the sustainability of lobster aquaculture on a commercial scale.