Land hermit crabs (Coenobita sp.) have the potential to be traded as pets, especially due to their uniqueness. Indeed, this animal does not have complete exoskeletons and uses gastropod shells to protect itself. However, the animal may not survive in captivity because of the feeding problem. This study aimed to increase the growth and survival rate of Coenobita sp. in captivity through the feeding approach. The research was begun by developing a standard curve allowing the body weight estimation through total weight. Fresh, non refreshed, and mixed feed and feeding patterns were tested by measuring the consumption rate and hermit crabs’ growth and survival rate. The regression between total and body weight for C. rugosus was Y = 0.276X – 0.049 and for C. perlatus was Y = 0.101X1.33. The feed composition between the two species was not significantly different. Both species needed varied, fresh, and low protein content feed. If one of these criteria were not available, the feed consumption rate would decrease, leading to lower growth and survival rate. Non-varied but fresh feed did not affect the survival rate. However, the negative effect of non-varied feed was observed on the growth rate. The best feed for hermit crabs was found to be apples, followed by jicama and corn.

1. W. W. Burrgren and B. R. McMahon, Biology of the Land Crab. New York, NY: Cambridge University Press, 1988.
2. A. Pavia, Hermit Crab: Your Happy Healthy Pet. Hoboken, NJ: Wiley-Blackwell, 2006.
3. D. R. Hahn, “Hermit crab shell use patterns: Response to previous shell experience and to water flow,” Journal of Experimental Marine Biology and Ecology, vol. 228, no. 1, pp. 35-51, 1998.
4. P. Greenaway, “Terrestrial adaptations in the anomura (Crustacea: Decapoda),” Memoirs of Museum Victoria, vol. 60, no. 1, pp. 13-26, 2003.
5. R. A. Hutagalung, Josef and S. Mastrorillo, “Improving the survival rate of land hermit crabs through shell ecology,” Journal of Engineering and Applied Science, 2016.
6. R. W. Thacker, “Avoidance of recently eaten foods by land hermit crabs, Coenobita compressus,” Animal Behaviour, vol. 55, no. 2, pp. 485-496, 1998.
7. M. Debanks, The Pet Owners Guide to Hermit Crabs: The Complete Guide to a Happy and Healthy Hermit Crab. New York, NY: Matthew Debanks, 2012.
   
8. S. Fox, Hermit Crabs: Everything about Anatomy, Ecology, Purchasing, Feeding, Housing, Behavior, and Illness. New York, NY: Barron, 2010.
   
9. B. T. Lumeran, “Spatial Distribution of marine planktons off the Coast of Sitra, Kingdom of Bahrain,” International Journal of Applied and Physical Sciences, vol. 2, no. 3, pp. 71-78, 2016.
   
10. S. M. Linton and P. Greenaway, “A review of feeding and nutrition of herbivorous land crabs: Adaptations to low quality plant diets,” Journal of Comparative Physiology B, vol. 177, no. 3, pp. 269-286, 2007.
    
11. S. M. Linton, R. Saborowski, A. J. Shirley and J. A. Penny, “Digestive enzymes of two brachyuran and two anomuran land crabs from Christmas Island, Indian Ocean,” Journal of Comparative Physiology B, vol. 184, no. 4, pp. 449-468, 2014.
    
12. United States Department of Agriculture (USDA). (2013). Agricultural research service national nutrient database for standard reference release 28 [Online]. Available: https://ndb.nal.usda.gov/ndb/foods
    
13. J. E. Wilde, S. M. Linton and P. Greenaway, “Dietary assimilation and the digestive strategy of the omnivorous anomuran land crab Birgus latro (Coenobitidae),” Journal of Comparative Physiology B, vol. 174, no. 4, pp. 299-308, 2004.

R. A. Hutagalung, Hermawan, S. Magdalena, I. Iskandar and S. Mastrorillo, “Increasing growth and survival rate of land hermit crabs (Coenobita sp.) in artificial habitat through feeding habit,” International Journal of Applied and Physical Sciences, vol. 3, no. 3, pp. 55-59, 2017.