Assessment of the impacts of artisanal fishing gears on nearshore fish stocks along coastal waters off the Kilwa–Mafia seascape in Tanzania

Chande, Muhaji A.; Kimirei, Ismael A.; Igulu, Mathias M.; Kuguru, Baraka; Kayanda, Robert; Mwakosya, C.; Kangwe, Simon Juma; Sululu, Joseph S.; Ulotu, Eusebia Ernest

doi:10.1016/j.rsma.2019.100531

Cited by 7 publications

(7 citation statements)

References 46 publications

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“…Fishers are known to be versatile and can use multiple gears. For example, in other parts of the Western Indian Ocean, this was demonstrated in a study based on LEK in Zanzibar (Berkström et al 2019 ), in Kenya (Samoilys et al 2017 ) and in Tanzania (Chande et al 2019 ). Similar characteristics were also found in other regions, such as Bangladesh (Rashed et al 2016 ) and Brazil (Cunha et al 2016 ) to name a few examples.…”

Section: Discussionmentioning

confidence: 89%

Artisanal fishers in small island developing states and their perception of environmental change: the case study of Mauritius

Appadoo

Sultan

Simier

et al. 2022

Rev Fish Biol Fisheries

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Small island developing states (SIDS) are highly dependent on coastal marine resources. Artisanal fishers in SIDS currently face multiple stressors related to global environmental change. Considering Mauritius (South Western Indian Ocean) as a case study, this paper characterizes artisanal fishers in SIDS and assesses their perception of global change using the Local Ecological Knowledge (LEK) approach. A semi-structured survey method was used to interview 247 fishers from all around the country. Artisanal fishers used multiple fishing areas and gears, with half of the fishers using Fish Aggregating Devices (FADs). Six main groups of fishers were identified according to their fishing strategies, which reflected different target species in their reported catches. The majority of fishers reported lower fish abundances and fewer species now compared to 10 to 15 years ago. All groups of fishers observed environmental change over the same period. Such ecological knowledge highlights the exposure of fishers to stressors induced by environmental change. The characterization of the groups of fishers and their fishing strategies will be useful to better evaluate adaptation strategies and support management measures to face global environmental change. Graphical Abstract Supplementary Information The online version contains supplementary material available at 10.1007/s11160-022-09735-6.

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Section: Discussionmentioning

confidence: 89%

Artisanal fishers in small island developing states and their perception of environmental change: the case study of Mauritius

Appadoo

Sultan

Simier

et al. 2022

Rev Fish Biol Fisheries

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“…Una de las opciones es usar artes de pesca más nocivas para el recurso pesquero, que carecen de selectividad como las mallas y atarrayas, que generan mayor presión sobre éste, agudizando el problema para los pescadores (Fernández, 2013). En algunas ocasiones, optan por dejar de pescar, construir lanchas o artículos de pesca como atarrayas, mallas, líneas, entre otros (Chande et al, 2019).…”

Section: )unclassified

“…Esta actividad, es compleja debido a la cantidad de embarcaciones, artes de pesca y especies objetivo. Se caracteriza por ser tradicional y no presentar impactos importantes sobre los ecosistemas marinos y sus dinámicas biológicas (Chande et al, 2019;FAO, 2018;Sea Around Us, 2016).…”

Section: Pesca Artesanalunclassified

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Conservation prioritization for seahorses (Hippocampus spp.) at broad spatial scales considering socioeconomic costs

Zhang

Vincent

2019

Biological Conservation

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“…In Tanzania, and Africa at large, considerable studies have been conducted to assess the introduction and impacts of the Nile perch. However, these studies had only focused on ecological and biological impacts such as the loss of species, trophic dynamics and altered habitats, as well as socio-economic impacts such as economic booms, edging out small-scale fish operators, HIV/AIDS, border conflicts and food security (Aloo et al, 2017;Bulengela et al, 2020;Chande et al, 2019;Gough et al, 2020;Mugidde et al, 2005;Njiru et al, 2008;Opio et al, 2013;Owusu, 2020;Silas et al, 2020;Yongo et al, 2005). The impact of overfishing on the productivity and technical efficiency of the fishery sector in Lake Victoria, Tanzania, however, has not been given sufficient attention in the literature.…”

Section: Introductionmentioning

confidence: 99%

Impacts of Nile Perch (Lates niloticus) overfishing on the technical efficiency of fishers in the Tanzania portion of Lake Victoria

Mkuna

Baiyegunhi

2021

Lakes & Reservoirs

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Lake Victoria fishery activities are of crucial economic importance to the communities in East Africa as they support the majority of fishers (Mgaya & Mahongo, 2017). The lake contains three dominant fish species, including the Nile Perch (Lates niloticus), Nile Tilapia (Oreochromis niloticus) and a native sardine (Rastrineobola argentea) (Njiru et al., 2014). Nile Perch (Linnaeus, 1758) is the most valuable of these species, supporting an important commercial export industry mainly to Europe, with an estimated average annual net worth of US$ 350 million (Mkumbo & Marshall, 2015;Njiru et al., 2014). Nile perch is a predatory fish indigenous to the Ethiopian eco-region of Africa. It can grow to a length of 2-m, weigh up to 200-kg and live up to 16 years (Aloo et al., 2017). It was introduced into Lake Victoria in the1950s to utilize the majority species of endemic haplochromines (Cichlidae) that dominated the fish biomass in the lake and were not

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Assessment of the impacts of artisanal fishing gears on nearshore fish stocks along coastal waters off the Kilwa–Mafia seascape in Tanzania

Cited by 7 publications

References 46 publications

Artisanal fishers in small island developing states and their perception of environmental change: the case study of Mauritius

Artisanal fishers in small island developing states and their perception of environmental change: the case study of Mauritius

Conservation prioritization for seahorses (Hippocampus spp.) at broad spatial scales considering socioeconomic costs

Impacts of Nile Perch (Lates niloticus) overfishing on the technical efficiency of fishers in the Tanzania portion of Lake Victoria

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