CoAS_V1IS9_07

Review Article

IMTA: Elevating Nutrient Extraction for Sustainable Nutrification

Sagar Vitthal Shinde*1

Abstract

Integrated Multitrophic Aquaculture (IMTA) presents a promising and innovative approach to address the challenges of sustainable aquaculture. This method revolves around the concept of converting waste generated in one system into valuable products through nutrient extraction, offering a more sustainable alternative. As intensive aquaculture becomes increasingly prevalent to meet the growing global demand for animal protein and confront impending food security issues, the discharge of substantial nutrients into the water poses environmental concerns. The discharge of nutrients from intensified aquaculture practices can have adverse effects on benthic flora and fauna, leading to alterations in bottom sediment and potential long-term impacts on benthic biodiversity. While the removal of these nutrients remains a topic of ongoing debate, Integrated Multitrophic Aquaculture emerges as a potential solution to mitigate the environmental impact of aquaculture. IMTA strives to achieve a balance in aquatic systems by integrating species in appropriate proportions, encompassing fed, organic, and inorganic extractive components. In the IMTA system, the interconnection of species within the food chain facilitates the recycling of wastes or by-products from one species into valuable inputs such as fertilizers, food, and energy for another. This cyclic process not only reduces environmental impact but also aligns with the principles of economic stability through product diversification and risk reduction. Additionally, IMTA addresses social acceptability and environmental sustainability by incorporating better management practices, making it a holistic and viable strategy for sustainable aquaculture.

Keywords

IMTA, intensification, Sustainable production, ecological balance

References

Anil, M. K., Gomathi, P. (2023). *Hatchery and farming technologies for molluscs.*
Balasubramanian, C. P., Shailesh, S., Sukumaran, K., Panigrahi, A., Vasagam, K. K., Kumararaja, P., Thigale, D., Sawani, R., Vijayan, K. K., Vasudevan, N. (2018). *Development of integrated multi-trophic aquaculture (IMTA) for tropical brackishwater species in Sindhudurg District, Maharashtra, west coast of India.*
Biswas, G., Kumar, P., Ghoshal, T. K., Kailasam, M., De, D., Bera, A., Mandal, B., Sukumaran, K., Vijayan, K. K. (2020). *Integrated multi-trophic aquaculture (IMTA) outperforms conventional polyculture with respect to environmental remediation, productivity and economic return in brackishwater ponds.* Aquaculture, 516, 734626.
Biswas, G., Kumar, P., Kailasam, M., Ghoshal, T. K., Bera, A., Vijayan, K. K. (2019). *Application of Integrated Multi Trophic Aquaculture (IMTA) concept in brackishwater ecosystem: the first exploratory trial in the Sundarban, India.* J. Coast. Res., 86, 49–55.
Brito, L. O., Arana, L. A. V., Soares, R. B., Severi, W., Miranda, R. H., da Silva, S. M. B. C., Coimbra, M. R. M., Gálvez, A. O. (2014). *Water quality, phytoplankton composition and growth of Litopenaeus vannamei (Boone) in an integrated biofloc system with Gracilaria birdiae (Greville) and Gracilaria domingensis (Kützing).* Aquac. Int., 22, 1649–1664.
Cubillo, A. M., Ferreira, J. G., Robinson, S. M., Pearce, C. M., Corner, R. A., Johansen, J. (2016). *Role of deposit feeders in integrated multi-trophic aquaculture—a model analysis.* Aquaculture, 453, 54–66.
Fang, J., Zhang, J., Xiao, T., Huang, D., Liu, S. (2016). *Integrated multi-trophic aquaculture (IMTA) in Sanggou Bay, China.* Aquac. Environ. Interact., 8, 201–205.
Granada, L., Sousa, N., Lopes, S., Lemos, M. F. (2016). *Is integrated multitrophic aquaculture the solution to the sectors’ major challenges?–a review.* Rev. Aquac., 8, 283–300.
Johnson, M. P. (2021). *Farm Production Diversity in Aquaculture Has Been Overlooked as a Contributor to Sustainability.* Front. Sustain. Food Syst., 5, 655346.
Marx, K. K., Sundaray, J. K., Rathipriya, A., Abishag, M. M. (2020). *Broodstock Management and Fish Seed Production.* CRC Press.
Nath, K., Munilkumar, S., Patel, A. B., Kamilya, D., Pandey, P. K., Sawant, P. B. (2021). *Lamellidens and Wolffia canopy improves growth, feed utilization and welfare of Labeo rohita (Hamilton, 1822) in integrated multi-trophic freshwater aquaculture system.* Aquaculture, 534, 736207.
Ren, J. S., Stenton-Dozey, J., Plew, D. R., Fang, J., Gall, M. (2012). *An ecosystem model for optimizing production in integrated multitrophic aquaculture systems.* Ecol. Model., 246, 34–46.

Rosa, J., Lemos, M.F., Crespo, D., Nunes, M., Freitas, A., Ramos, F., Pardal, M.Â., Leston, S. (2020). *Integrated multitrophic aquaculture systems–Potential risks for food safety.* Trends Food Sci. Technol., 96, 79–90.
Sarà, G., Zenone, A., Tomasello, A. (2009). *Growth of Mytilus galloprovincialis (mollusca, bivalvia) close to fish farms: a case of integrated multi-trophic aquaculture within the Tyrrhenian Sea.* Hydrobiologia, 636, 129–136.
Sasikumar, G., Viji, C.S. (2015). *Integrated Multi-Trophic Aquaculture Systems (IMTA).*
Shpigel, M., Guttman, L., Shauli, L., Odintsov, V., Ben-Ezra, D., Harpaz, S. (2017). *Ulva lactuca from an integrated multi-trophic aquaculture (IMTA) biofilter system as a protein supplement in gilthead seabream (Sparus aurata) diet.* Aquaculture, 481, 112–118.
Soto, D. (2009). *Integrated mariculture: a global review.* Food and Agriculture Organization of the United Nations (FAO).
Troell, M. (2009a). *Integrated marine and brackishwater aquaculture in tropical regions: research, implementation and prospects.* Integr. Maric. Glob. Rev. FAO Fish. Aquac. Tech. Pap. 529, 47–131.
Troell, M. (2009b). *Integrated marine and brackishwater aquaculture in tropical regions: research, implementation and prospects.* Integr. Maric. Glob. Rev. FAO Fish. Aquac. Tech. Pap. 529, 47–131.
Yokoyama, H. (2013). *Growth and food source of the sea cucumber Apostichopus japonicus cultured below fish cages—potential for integrated multi-trophic aquaculture.* Aquaculture, 372, 28–38.
Yokoyama, H., Ishihi, Y. (2010). *Bioindicator and biofilter function of Ulva spp. (Chlorophyta) for dissolved inorganic nitrogen discharged from a coastal fish farm—potential role in integrated multi-trophic aquaculture.* Aquaculture, 310, 74–83.

• Published online
• 29th February, 2024