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Population dynamics and management

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Book cover Tilapias: Biology and Exploitation

Part of the book series: Fish and Fisheries Series ((FIFI,volume 25))

Abstract

The tilapias are of major economic and ecological importance, being exploited in capture fisheries and aquaculture systems at all levels of intensity, and having invaded tropical fresh and brackish water ecosystems on all continents as a result of intentional or accidental introductions. Perhaps the most striking ecological feature of the tilapias is their ability to reproduce readily in almost any environment, from lakes to aquaculture tanks or aquaria. This ability, together with a remarkable plasticity in life history traits, is seen as a reason for their successful colonization of such a wide range of habitats. It is also, however, a source of management problems in culture where early maturation and prolific breeding may lead to’ stunting’, dense populations of small individuals below marketable size. Population dynamics, the study of the abundance and biomass dynamics of populations, their underlying mechanisms and their management consequences, is therefore relevant to all forms of tilapia exploitation. At the same time, the wide range of manipulations to which tilapia populations are being subjected provides a unique opportunity to investigate fundamental problems in fish population biology.

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Lorenzen, K. (2000). Population dynamics and management. In: Beveridge, M.C.M., McAndrew, B.J. (eds) Tilapias: Biology and Exploitation. Fish and Fisheries Series, vol 25. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4008-9_6

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