Boom-bust like dynamics of invasive black bullhead ( Ameiurus melas ) in Lake Sava (Serbia)
Article (Accepted Version)
© 2019 John Wiley & Sons Ltd.
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The life‐history traits and population dynamics of the black bullhead Ameiurus melas (Rafinesque) were studied monthly from August 2009 to December 2012 in Lake Sava in Belgrade (Serbia). This period included a mass mortality event in May 2011 and subsequent population recovery during 2012. Available evidence suggests the mass mortality was caused by European catfish virus that only affected the black bullhead. Changes in key life‐history traits and the recovery potential (increase in catch‐per‐unit‐effort, doubling of young‐of‐the‐year to adult ratio, earlier maturation and increased fecundity) following the mass mortality event suggest population resilience typical of a recurring boom‐bust pattern and demonstrate the species’ capacity to recover rapidly and re‐establish following disturbance. Repeated systematic mass removals of both juveniles and adults (using fyke nets) will be required if future fishery management measures aimed at limiting the population size are to be effective.
Keywords:Managementmass; Mortality; Eventnon-native; Fishpopulation; Dynamicspopulation; Recoveryviral; Infection
Source:Fisheries Management and Ecology, 2019
- Monitoring and Modeling of Rivers and Reservoirs (MORE) - Physical, Chemical, Biological and Morphodynamic Parameters (RS-37009)
- Fishes as water quality indicators in open waters of Serbia (RS-173045)
- J.E. Purkyně Fellowship of the Academy of Sciences of the Czech Republic
- Alexander von Humboldt Foundation
- German Federal Ministry of Education and Research
- ESF. Grant Number: CZ.02.1.01/0.0/0.0/16_025/0007417