Chemical Messengers or synonymously the hormones are the most important part of animal sciences which governs the major phenomenological process of animal domain. There are several books and literature available in India which primarily confers the vertebrate chemical messengers or vertebrates hormones. unfortunately there are fragmentary information available in the printed form in respect to the invertebrate chemical messengers.

This book Invertebrate Chemical Messengers depicting glimpses about the invertebrate hormone is written in a lucid language with the best information. It is an ideal text as well as reference for the undergraduate and post graduate students and also for those who are keen to learn about the fundamentals or invertebrate hormone system.