Reproductive strategy of the invasive sharpbelly, Hemiculter leucisculus (Basilewsky 1855), in Erhai Lake, China

Summary This study describes the reproductive strategy of the sharpbelly Hemiculter leucisculus, an invasive and dominant species in Erhai Lake in China with the goal of understanding how reproductive strategy contributes to its environmental adaptability and invasive potential. Specimens (n = 3583)...

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Bibliographic Details
Published in:Journal of applied ichthyology 2016-04, Vol.32 (2), p.324-331
Main Authors: Wang, T., Jakovlić, I., Huang, D., Wang, J.-G., Shen, J.-Z.
Format: Article
Language:English
Subjects:
Hemiculter leucisculus
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Summary:Summary This study describes the reproductive strategy of the sharpbelly Hemiculter leucisculus, an invasive and dominant species in Erhai Lake in China with the goal of understanding how reproductive strategy contributes to its environmental adaptability and invasive potential. Specimens (n = 3583) were collected monthly or bimonthly from July 2009 to June 2011 (min: 114‐Feb, max: 883‐Aug), using gill nets (inner/outer mesh = 30/110 mm, stretched mesh). Gonads were removed, weighed and preserved for further (histological) analyses. Oocyte size‐frequency distribution was continuous and had advanced vitellogenic oocytes with postovulatory follicles present in spawning females, both suggesting that sharpbelly is a multiple spawner with adhesive eggs. Spawning extended from April to September, with the peak period from May to August. Standard lengths (SL, cm) at minimal observed maturity/L50/L99.9 values were 4.6/5.6/10.5 for females and 5.1/5.5/7.5 cm for males, respectively. Females were over‐represented (P 
ISSN:0175-8659
1439-0426
DOI:10.1111/jai.13001