Daily ageing to delineate population dynamics of the invasive fish Gambusia holbrooki: implications for management and control

Despite the high global invasion profile of Gambusia holbrooki , there is limited knowledge of its population dynamics, especially biological parameters for fine-scale delineation of recruitment events that can provide a basis for controlling this short-lived invasive species. Key to this is daily a...

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Bibliographic Details
Published in:Biological invasions 2021-07, Vol.23 (7), p.2261-2270
Main Authors: Nguyen, Hoang, Bell, Justin D., Patil, Jawahar G.
Format: Article
Language:English
Subjects:
Age
Aging
Aging (natural)
Aquariums
Biomedical and Life Sciences
Birth rate
Developmental Biology
Dynamics
Ecology
Fish
Fisheries
Freshwater & Marine Ecology
Gambusia holbrooki
Growth models
Growth rate
Growth rings
Introduced species
Invasive fish
Invasive species
Life Sciences
Mortality
Original Paper
Otoliths
Pest control
Plant Sciences
Population
Population dynamics
Summer
Water temperature
Wetlands
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Summary:Despite the high global invasion profile of Gambusia holbrooki , there is limited knowledge of its population dynamics, especially biological parameters for fine-scale delineation of recruitment events that can provide a basis for controlling this short-lived invasive species. Key to this is daily ageing of otoliths, and in this study 193 (~ 50%) of 394 wild fish sampled from an invaded wetland were successfully aged. Increment counts of growth rings in otoliths from aquaria-reared G. holbrooki did not correspond 1:1 to their known ages but were significantly correlated ( P  
ISSN:1387-3547
1573-1464
DOI:10.1007/s10530-021-02504-9