Spatio-temporal Variability of Acartia clausi (Copepoda, Calanoida) Population Structure, Abundance, Body Length, and Biomass in a Tropical Coastal Lagoon (Grand-Lahou, Côte d'Ivoire)
| Main Authors: | N'doua Etilé, Raphaël, Kassi Blahoua, Georges, Aké Bédia, Théophile, Essetchi Kouamelan, Paul, N'Douba, Valentin |
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| Format: | Article Journal |
| Bahasa: | eng |
| Terbitan: |
, 2017
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/3349929 |
Daftar Isi:
- The spatial and seasonal variations of Acartia clausi population structure, abundance, biomass and body length variation in relationship to environmental variables were investigated in the Grand-Lahou lagoon at 21 stations from January to December 2004. A. clausi abundance, biomass and body (prosome) length showed considerable seasonal and spatial variation. On average, total population abundance and biomass obtained during the dry season (Mean: 7.11 ind/l and 9.08 μgC/l respectively) were higher than that those which have gotten during the wet season (Mean: 2.98 ind/l and 2.76 μgC/l respectively). The same tendency was registered for prosome length of all development stages, with 275-1000 μm during the dry season versus 225-975 μm during the wet season. A. clausi population (without the nauplii) was dominated by copepodids stages in all seasons. During the dry season, on average, copepodids stages constituted 76.65% of total density and 52.98% of total biomass. During the wet season, copepodids stages represented 92.23% of total density and 72.42% of total biomass. In the adults stages, on average females (F) were more numerous than males (M), with a sex ratio (M/F) of 0.75. However, males were slightly more abundant than females during the dry season (February to April and September) with sex ratio (M/F) range from 1.10 to 1.46. Correlation on data of this study analyses showed that spatio-seasonal variations of A. clausi abundance, Biomass and Body length were mainly linked to water salinity, pH, transparency and dissolved oxygen, phosphates and nitrates concentrations.Read Complete Article at ijSciences: V62017051296 AND DOI: http://dx.doi.org/10.18483/ijSci.1296