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Phenotypic Divergences in Growth and Reproduction Underpin the Invasion of Suckermouth Armored Catfish IPterygoplichthys disjunctivus/I into Lotic and Lentic Habitats in Vietnam

Suckermouth armored catfish (Pterygoplichthys disjunctivus) is one of the most widespread invasive species in Vietnam. However, it is relatively unknown how the species underwent its divergent adaptations to varying local conditions and habitat types, an understanding of which is essential for manag...

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Bibliographic Details
Published in:Water (Basel) 2023-10, Vol.15 (20)
Main Authors: Dien, Tran Duc, Ha, Vo Thi, Dang, Mai, Sang, Huynh Minh, Hieu, Nguyen Trinh Duc, Stolbunov, Igor Anatolievich
Format: Article
Language:English
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Summary:Suckermouth armored catfish (Pterygoplichthys disjunctivus) is one of the most widespread invasive species in Vietnam. However, it is relatively unknown how the species underwent its divergent adaptations to varying local conditions and habitat types, an understanding of which is essential for managing its invasion in Vietnam. We addressed this by analyzing a large number of fish (662 samples) collected in lotic (Dinh River) and lentic (Suoi Trau Reservoir) habitats in southern Vietnam during one year. The allometric growth patterns estimated by von Bertalanffy growth functions were L[sub.t]=483(1−e[sup.−0.71(t−0.40)]) in Dinh River and L[sub.t]=346(1−e[sup.−1.01(t−0.62)]) in Suoi Trau Reservoir. The estimated fish ages were 2.9 to 4.2 years old with an average total length from 206.10 ± 2.09 mm in Suoi Trau Reservoir to 319.22 ± 3.29 mm in Dinh River. The percentage of fish with matured ovaries peaked in August (100%) and was lowest in February (
ISSN:2073-4441
2073-4441
DOI:10.3390/w15203616