Physicochemical changes and abundance of freshwater snails in Anambra River (Nigeria) during the rainy season

• Autorzy: Okoye Charles Obinwanne , Echude Daniel , Chiejina Chike Obinna , Andong Felix Atawal , Okoye Kingsley Chukwuebuka , Ugwuja Samuel Ejike , Ezeonyejiaku Chigozie Damian , Eyo Joseph

Identyfikatory

DOI

10.2478/eces-2022-0013

• Języki publikacji: EN

Abstrakty

EN

Rapid diversification is a way of responding to environmental change for freshwater organisms. This work examined the physicochemical changes and abundance of freshwater snails in Anambra River (Nigeria) during the rainy season. Field studies were conducted fortnightly from June to August 2019 at three stations of the river namely: Otuocha (station I), Otunsugbe (station II), and Ukwubili (station III) about 8.35 kilometers apart from each other. A scoop net of 2 cm mesh size and handpicking was used to sample freshwater snails randomly and water samples were taken to the laboratory for physicochemical analysis. A total of 896 freshwater snails belonging to 6 species (Afropomus balanoidea, Pomacea maculata, Lymnea stagnalis, Lanistes ovum, Pila wernei, and Saulea vitrea) were collected. Pomacea maculata was the most dominant species with a relative abundance of 45.87 %, while Saulea vitrea was the least dominant species with a relative abundance of 2.34 %. There was a significant negative correlation between dissolved oxygen and Pomacea maculate (r = –0.877, p = 0.002) and a positive correlation between dissolved oxygen and Stagnalis lymnea (r = 0.840, p = 0.005). The diversity of species was highest at Otuocha (1.171) followed by Ukwubili (1.133) and Otunsugbe (0.856) with average mean temperatures of (23.1 ±0.1) °C, (27.30 ±0.00) °C, and (26.80 ±0.03) °C respectively. The distribution of freshwater snails was influenced by the physicochemical variability of Anambra River during the rainy season. Therefore, further studies for a longer time and different seasons to examine the impact of physicochemical changes on the snail distribution are encouraged.

Słowa kluczowe

EN

freshwater snail; biodiversity; physicochemical changes; rainy season; Anambra River; Nigeria

PL

ślimak słodkowodny; bioróżnorodność; przemiany fizykochemiczne; pora deszczowa; Anambra rzeka; Nigeria

• Wydawca: Towarzystwo Chemii i Inżynierii Ekologicznej
• Czasopismo: Ecological Chemistry and Engineering. S
• Rocznik: 2022
• Tom: Vol. 29, nr 2
• Strony: 169--181
• Opis fizyczny: Bibliogr. 42 poz., rys., tab., wykr.

Twórcy

autor

Okoye Charles Obinwanne

• Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, 410001 Nigeria
• Biofuels Institute, School of Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013 China

• https://orcid.org/0000-0002-6205-4886

autor

Echude Daniel

• Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, 410001 Nigeria

autor

Chiejina Chike Obinna

• Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, 410001 Nigeria

autor

Andong Felix Atawal

• Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, 410001 Nigeria

autor

Okoye Kingsley Chukwuebuka

• Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, 410001 Nigeria

autor

Ugwuja Samuel Ejike

• Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, 410001 Nigeria

autor

Ezeonyejiaku Chigozie Damian

• Bioconservation Unit, Department of Zoology, Nnamdi Azikiwe University, Awka, 5025 Nigeria

autor

Eyo Joseph

• Department of Zoology and Environmental Biology, University of Nigeria, Nsukka, 410001 Nigeria

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