International Journal of Biodiversity / 2018 / Article / Tab 1

Research Article

Alien Fish Species in the Mbô Floodplain Rivers in Cameroon

Table 1

Sampled fish, total length, total weight, and sex ratio of alien fish species caught in the Mbô Floodplain Rivers (October 2014–October 2015).

Family/Species and statusRelative percentageTotal length (cm)Weight (g)Sex-ratio
N%MinMaxMean± sdMinMaxMean± sdMFM:Fχ2

Clariidae:
Clarias gariepinus (Burchell, 1822) (Escaped from ponds in Dschang since 1990, accidental introduction, naturalised)
7832.9112.5088.5031.19±15.625.715250.00353.42±656.2035430.81:10.1567

Channidae:
Parachanna obscura (Günter, 1861) (Escaped from ponds in Santchou near the Black water river since 2002, accidental introduction, unknown)
3313.9222.0046.5027.46±5.3477.84784.57189.52±157.3523211.09:10.3526ns

Cichlidae:
Tilapia cameronensis (Holly, 1927) (Translocated from Lom River-Cameroon, intentional transfer, naturalised)
6025.3113.0026.5019.17±3.3430.00350.00122.62±71.8832281.14:10.0921ns
Oreochromis niloticus (Linnaeus, 1758). Exotic, from Bangui Central African Republic since 1975, accidental diffusion, naturalised)6627.8512.0026.0019.49±3.6730.00350.00132.41±777.5034321.06:10.0950ns

N: number of fish; %: relative percentage; Min: minimum; Max: maximum; M: male; F: female; M: F: sex ratio; χ2: chi-square test; ns: P > 0.05, P < 0.05.

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