Breeding pattern of <i>Oreochromis niloticus</i> (Linnaeus, 1758) versus native congeneric species, <i>Oreochromis macrochir</i> (Boulinger, 1912), in the upper Kabompo River, northwest of Zambia

Jere, Arthertone; Jere, Wilson; Mtethiwa, A. H. N.; Kassam, Daud

doi:10.1002/ece3.8377

Cited by 2 publications

(2 citation statements)

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“…The African sharptooth catfish was found to be the most widely distributed and this finding supports earlier observations of it being the most widely distributed fish species in Africa and it thrives in polluted water bodies (Skelton, 2001). Similar to the African sharptooth catfish, the Nile tilapia which is considered to be non-native in most water bodies (Jere et al, 2021) was also noted to be widely distributed. Studies elsewhere indicated that the Nile tilapia has tended to dominate other species due to its aggressive ability to migrate and thrive in disturbed water habitats and its year-round breeding patterns (Jere et al, 2021).…”

Section: Discussionmentioning

confidence: 93%

“…Similar to the African sharptooth catfish, the Nile tilapia which is considered to be non-native in most water bodies (Jere et al, 2021) was also noted to be widely distributed. Studies elsewhere indicated that the Nile tilapia has tended to dominate other species due to its aggressive ability to migrate and thrive in disturbed water habitats and its year-round breeding patterns (Jere et al, 2021). The biological behaviour of the Nile tilapia could partly explain why this species was caught even in the aquaculture facilities that are not monocultures.…”

Section: Discussionmentioning

confidence: 93%

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Epidemiology of epizootic ulcerative syndrome (EUS) in fish in the main water bodies of the Kavango–Zambezi and Great Limpopo transfrontier conservation areas of Zimbabwe

Sibanda

Pfukenyi

Hang’ombe

et al. 2022

Journal of Fish Diseases

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A three‐year study investigated the epidemiology of epizootic ulcerative syndrome (EUS) in fish from Kavango–Zambezi (KAZA) and Great Limpopo (GL) transfrontier conservation areas of Zimbabwe. A total of 38 sites comprising 27 wild fisheries and 11 aquacultures, from Mashonaland West, Matabeleland North and South, and Midlands were selected. Of the 27 wild fisheries, EUS‐positive fish were detected from 9 (33.3%) and none from the 11 aquacultures. No positive cases were detected from Nile tilapia (Oreochromis niloticus) from both aquacultures and wild fisheries. A total of 9.9% (239/2423) fish from the nine positive fisheries had typical EUS lesions, and infection was confirmed in 15 species. Prevalence was significantly higher (p < 0.05) in KAZA (11.5%; 95% CI: 9.6–13.4) compared with GL (8.6%; 95% CI: 7.1–10.1). The most affected were Clarias, followed by Barbus and Oreochromis species. Most cases (>80%) were reported in winter when ambient temperature was low. Further studies are required to determine water parameters associated with EUS outbreaks. These results suggested that the African sharptooth catfish (Clarias gariepinus) could be used potentially as an indicator species for EUS surveillance programmes. Thus, implementation of surveillance and biosecurity programmes that take into consideration the epidemiology of EUS will be beneficial.

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Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 93%

Epidemiology of epizootic ulcerative syndrome (EUS) in fish in the main water bodies of the Kavango–Zambezi and Great Limpopo transfrontier conservation areas of Zimbabwe

Sibanda

Pfukenyi

Hang’ombe

et al. 2022

Journal of Fish Diseases

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Transboundary Fisheries Management in Kavango–Zambezi Transfrontier Conservation Area (KAZA-TFCA): Prospects and Dilemmas

et al. 2023

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Inland fisheries in the Kavango–Zambezi Transfrontier Conservation Area (KAZA-TFCA) offer food security to the riverine communities across the region. They also contribute towards the attainment of the United Nations’ Sustainable Development Goals 1 and 15, which aim to alleviate poverty and maintain biodiversity conservation. Despite this significant role, the fisheries have suffered severe declines in the previous decades due to multiple factors, such as overfishing and poor legislation. Furthermore, climate change is exerting pressure by altering the ecology and productivity of the river systems. The unprecedented challenges of the COVID-19 pandemic have further constrained management efforts. Attempts to address these challenges have pointed towards transboundary fisheries management as a silver bullet in moving towards sustainable fisheries management. However, the implementation of this strategy in the region has encountered numerous roadblocks, thereby subjecting the river ecosystem to a wider environmental threat, with dire consequences on livelihoods. This paper reviews existing management and governance structures together with key informant interviews to elicit primary and secondary data essential for management at the regional level. The study identifies conflicting regulations, and inadequate policies and institutions across the region as major bottlenecks affecting the successful implementation of transboundary fisheries management. Finally, the paper offers some suggestions for the improvement of fisheries management in the region.

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Breeding pattern of Oreochromis niloticus (Linnaeus, 1758) versus native congeneric species, Oreochromis macrochir (Boulinger, 1912), in the upper Kabompo River, northwest of Zambia

Abstract: The introduction of invasive alien species in an ecosystem poses a greater risk to cause ecological disruption in stable environments

Cited by 2 publications

References 28 publications

Epidemiology of epizootic ulcerative syndrome (EUS) in fish in the main water bodies of the Kavango–Zambezi and Great Limpopo transfrontier conservation areas of Zimbabwe

Epidemiology of epizootic ulcerative syndrome (EUS) in fish in the main water bodies of the Kavango–Zambezi and Great Limpopo transfrontier conservation areas of Zimbabwe

Transboundary Fisheries Management in Kavango–Zambezi Transfrontier Conservation Area (KAZA-TFCA): Prospects and Dilemmas

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