Water hyacinth is without a doubt the water invader that causes the most harm to water bodies. Water hyacinths originated from Eastern Mediterranean, West Asia, and Central Asia; they are cultivated and loved worldwide. According to... more
Water hyacinth is without a doubt the water invader that causes the most harm to water bodies. Water hyacinths originated from Eastern Mediterranean, West Asia, and Central Asia; they are cultivated and loved worldwide. According to reports, water hyacinth has anti-inflammatory, antifungal, and antibacterial properties. The plant extracts can also be used to treat cholera, sore throats, and snake bites, as well as to scent hair. Water hyacinth Pontederia crassipes (Eichhornia crassipes) has proliferated rapidly in African inland waters, posing numerous threats to fisheries by reducing the existence of some species; water quality by lowering levels of dissolved oxygen; human health and the environment by introducing various disease-causing pathogens and harbouring dangerous animals. The hyacinths further impact human activities by blocking waterways for fishing and destroying habitat for some fish to bread properly. Tourism and navigation are also affected by limiting access to recre...
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Le Bagrus bajad figure parmi les espèces des poissons très pêchées dans les cours d’eau tropicaux d’Afrique dont les informations sur la reproduction sont rares. Quelques paramètres de reproduction de Bagrus bajad du Sud-ouest du Lac... more
Le Bagrus bajad figure parmi les espèces des poissons très pêchées dans les cours d’eau tropicaux d’Afrique dont les informations sur la reproduction sont rares. Quelques paramètres de reproduction de Bagrus bajad du Sud-ouest du Lac Albert ont été étudiés durant cette recherche. Les échantillons ont été collectés entre décembre 2019 et décembre 2020 au moyen des éperviers, des palangres et des filets maillants de maille standard (20,2, 25,4 et 30,5 mm). Au total, 520 spécimens dont 283 femelles et 237 males ont été étudiés. Les informations sur le sex-ratio, le stade de maturité sexuelle, le rapport gonadosomatique, le rapport hepathosomatique, la fécondité et le facteur de condition ont été analysés. L’étude a révélé l’égalité entre les mâles et les femelle parmi les individus, même si les femelles étaient supérieurs aux mâles (1: 0,84; p-value<0.05). Tous les poissons étudiés ont présenté tous les stades de maturité sexuelle (I, II, III, IV, et V). Les matures (III, IV et V) o...
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Globally, human population growth worldwide is something that cannot be controlled, and so there is a need to sustain the needs of a growing population. In Africa, for instance, population projections are made yearly, not even once... more
Globally, human population growth worldwide is something that cannot be controlled, and so there is a need to sustain the needs of a growing population. In Africa, for instance, population projections are made yearly, not even once stagnation is seen. Feeding and nutrition issues, hunger eradication have become a problem with the continuing growth of the population, which in turn is putting a lot of pressure on available resources like capturing fisheries from the lakes, oceans, and rivers, leaving them void. Aquaculture has then proven useful in supplementing the dwindling catch fisheries stocks, which have become incapable of supporting the growing population. Since its introduction in Africa, however, changes have been seen as it has contributed to food security and malnutrition and improved livelihoods by creating jobs and generating income. Currently, diversified products come from aquaculture practices both in inland and freshwaters, ponds, and intensification of aquaculture f...
Africa is being faced with issues of food security among others which is making it difficult when the future, vision 2030 is being thought of. As far as the African economy is concerned, fish production-both capture and aquaculture-are... more
Africa is being faced with issues of food security among others which is making it difficult when the future, vision 2030 is being thought of. As far as the African economy is concerned, fish production-both capture and aquaculture-are contributors, although due to the effects of climate change, the sectors are highly affected, hence increased issues of food security. This study therefore discusses the effects of climate change on fisheries and aquaculture, mitigation measures, and adaptation strategies in Africa according to the different available literatures reviewed. Different effects of climate change include rising sea level, rising water temperatures, rising water salinity, ocean acidification, changes in precipitation patterns, disease, and algal blooms. Some of the mitigation measures being restoration of mangroves at the coastal regions, corals, advocating for reduction in greenhouse gas emissions. On adaptation, both the fish and the fishing community have shown different adaptations. For instance, fish have shown migration habits to safe places as fishers have changed their fishing gears, increased fishing effort, and targeted different new species. However, some adaptations by the fisher community have been seen to be very harmful, hence not promising for the sustainability of the fishery. The study thus recommends that the fishing community be made aware of the importance of diversification in terms of their well-being and as a way to reduce food security, as well as the participation of resource beneficiaries in making policies that are in line with adaptation to the effects of climate change and flexibility of the fishery for sustainability.