Distribution of Benthic Insect Fauna in a West African Lagoon: The Porto-Novo Lagoon in Benin

Adandedjan, Delphine; Lalèyé, Philippe; Ouattara, Allassane; Gourène, Germain

doi:10.3923/ajbs.2011.116.127

Cited by 13 publications

(14 citation statements)

References 14 publications

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“…That could be explained by the large ability of this group to survive in different types of habitats (Tachet et al, 2010;Mereta et al, 2011), and can also adapt to many feeding strategies in water colunm. This agrees with previous studies on sub-Saharan areas that have proven that the tropical fresh water, harbors a high diversity of macroinvertebrates dominated by insects (Adandedjan et al, 2011;Edia et al, 2013;Sanogo et al, 2014;Kaboré et al, 2016a;Sirima et al, 2017). The presence of macroinvertebrate groups such as Ephemeroptera, Trichoptera and Odonata, recognized as sensitive to pollution, indicates that the Samandéni Reservoir has good ecological conditions (Wahizatul et al, 2013;Kaboré et al, 2016a, b).…”

Section: Discussionsupporting

confidence: 92%

Ecological status of a newly impounded sub-saharan reservoir based on benthic macroinvertebrates community (Burkina Faso, West Africa)

Victor¹,

Adama²,

Idrissa³

et al. 2021

J. Ecol. Nat. Environ.

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In West Africa, particularly in Burkina Faso, the aquatic ecosystems are under human pressures. Therefore, for long term management of these ecosystems, the managers need baseline data for regular assessment of ecological health condition. In this regard, the structure of the benthic macroinvertebrate community was investigated and the relationship between the environmental variables and biotic indices of the Samandéni reservoir from January to December 2018, after one-year impoundment was explored. The macroinvertebrates were collected with a hand net (25 × 25 cm 2 coverage area and 500 μm mesh) according to the multi-habitat sampling method. Key environmental variables such as temperature, conductivity, dissolved oxygen, pH and total dissolve solids (TDS) were measured in situ. High diversity of macroinvertebrates was reported and thirty-four (34) taxa were determined belonging to eight (8) orders dominated by insects (79.41% of all taxa). Good ecological quality of the reservoir was testified by the presence of several sensitive taxa like Ephemeroptera and Trichoptera. The trends of environmental variables also reflect good habitat conditions. The results revealed a strong and negative relationship between some abiotic variables and biotic indices. The finding of this study is of big importance for sustainable management of the Samandéni Reservoir.

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Section: Discussionsupporting

confidence: 92%

Ecological status of a newly impounded sub-saharan reservoir based on benthic macroinvertebrates community (Burkina Faso, West Africa)

Victor¹,

Adama²,

Idrissa³

et al. 2021

J. Ecol. Nat. Environ.

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“…In ecosystems such as Ologe lagoon and the Porto-Novo lagoon, the insects were noted as dominant but in different proportions or order. That disparity could be explained by the nature of the habitat, the sampling frequency, the duration of the study, the collection method and the scope of the study as mentioned by [46] and when comparing our results to those of [17] and [47]. A strict comparison cannot be made with previous results obtained by [14] in two years which includes 76 taxa (orders, families and genera).…”

Section: Macroinvertebratesmentioning

confidence: 56%

“…Despite their roles and their importance above mentioned, there are few studies on the macroinvertebrate communities of Benin ecosystems. Indeed, previous works on macroinvertebrate ecology were mainly carried out by [13]- [17]. Concerning the Nokoue Lake (Ramsar site 1018) the largest Benin continental lake, in terms of its extent, productivity and exploitation which ecological integrity is threatened, only the works of [13] [14] exist.…”

Section: Introductionmentioning

confidence: 99%

Structure and Composition of Macroinvertebrates during Flood Period of the Nokoue Lake, Benin

Odountan¹,

Abou²

2016

OJE

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The Nokoue Lake is the largest lake of Benin Republic and it is also considered as one of the most productive lagoon ecosystems in West Africa. This productivity is decreasing and thus raises productivity issue for a better management and conservation. Macroinvertebrate can be useful for this purpose. A study was conducted to assess the spatial variation of macroinvertebrates during high flood period. A total of 3892 macroinvertebrates of fresh and brackish water were sampled during the survey. Structural analysis of the macroinvertebrate community revealed that it was made up of 16 orders, 48 families and 66 genera dominated by Insecta compared to Mollusca, Crustacea and the Annelida. Insects were dominated by Diptera (Chironomus sp. and Tanytarsus sp.), Coleoptera (Dystiscidae) and accounted for 57.1% of the sampled population. Mollusca, Crustacea, Annelida and Arachnida were the following most abundant and represented 23.9%, 10.7%, 8.1% and 0.2% of the total population, respectively. The Evenness index of Pielou was higher on the Station 8 (0.91-0.97), close to Oueme River. However, no significant difference (p > 0.05) was observed neither between station nor between month on the Shannon-Wiener index (2.06-4.31), Simpson index (0.04-0.40) and the taxa number (10-27). Macroinvertebrate assemblages and composition were primarily due to changes in water quality dependent on hydroclimatic changes and probably to anthropogenic actions. This suggests the need for real investigation of the macroinvertebrate biological capacity when formulating conservation strategies for the Nokoue Lake.

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“…The differences (Mommsen, 1998;Adandédjan et al, 2011;2012). However, a more robust sampling scheme covering the entire year shall be essential in order to gather sufficient data, and relate biological parameters to environmental and anthropogenic factors, while the present study is based on data collected in a single sampling survey.In fact, seasonal variations in relative growth and condition are known in several fish species (Safran, 1992;Richter et al, 2000;Bolognini et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

“…PortoNovo Lagoon is connected to the Lagos Lagoon (Nigeria) to the east and to Nokoué Lake to the west. The salinity within the lagoon can vary from oceanic (due to tidal influence) to freshwater (depending on the freshwater inputs from several tributaries) (Adandédjan et al, 2011;2012).…”

Section: Methodsmentioning

confidence: 99%

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Jawad¹,

Gnohossou²,

Toussou³

et al. 2017

Turk. J. Fish. Aquat. Sci.

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Relationships between fish weight and length, otolith length and fish length, and otolith weight and length were analysed in two cichlid fish species, Coptodonguineensis(Günther, 1862) and SarotherodonmelanotheronRüppell, 1852 (Perciformes, Cichlidae), collected in two lakes in southern Benin (western Africa). The analysis of covariance (ANCOVA) was used to detect differences in the relationships between the specimens of the two species collected in the two lakes.To the authors' best knowledge, this study represents the first reference available on morphometric relationships for C. guineensis and S. melanotheron in the investigated area.

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Distribution of Benthic Insect Fauna in a West African Lagoon: The Porto-Novo Lagoon in Benin

Cited by 13 publications

References 14 publications

Ecological status of a newly impounded sub-saharan reservoir based on benthic macroinvertebrates community (Burkina Faso, West Africa)

Ecological status of a newly impounded sub-saharan reservoir based on benthic macroinvertebrates community (Burkina Faso, West Africa)

Structure and Composition of Macroinvertebrates during Flood Period of the Nokoue Lake, Benin

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