Ecological and evolutionary effects of harvesting: Lessons from the candy-fish experiment

Diaz Pauli B & Heino M (2013). Ecological and evolutionary effects of harvesting: Lessons from the candy-fish experiment. ICES Journal of Marine Science 70 (7): 1281-1286. DOI:10.1093/icesjms/fst160.

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Abstract

Understanding the challenges of sustainable fisheries management is not easy for non-specialists, and even many specialists fail to appreciate the potential evolutionary consequences of harvest. We propose candy-fish experiments as a savoury approach to teaching and disseminating the key principles of applied ecology and evolution to students, practitioners and the general public. We performed a simple experiment where the resource was represented by fish-shaped candy of distinct colours and flavours (strawberry and liquorice). Typically, harvesting was neither ecologically sustainable (55% of the populations were extinct by the end of the experiment) nor evolutionarily sustainable (most surviving populations had liquorice fish only). This harvest-induced evolution went apparently unnoticed. Somewhat encouragingly, the harvest was most likely ecologically sustainable when a person spontaneously took the role of a stock manager.

Item Type: Article
Uncontrolled Keywords: Candy-fish; Dissemination; Ecological sustainability; Education; Harvest-induced evolution
Research Programs: Evolution and Ecology (EEP)
Bibliographic Reference: ICES Journal of Marine Science; 70(7):1281-1286 (November 2013)
Depositing User: IIASA Import
Date Deposited: 15 Jan 2016 08:48
Last Modified: 23 Feb 2016 12:10
URI: http://pure.iiasa.ac.at/10398

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