Department Of Zoology

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Browsing Department Of Zoology by Author "Adeoye, Abubakar Abdullahi"

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    Extracts from Hyptis suaveolens (L.) Poit. and Tephrosia vogelii Hook.f leaves as maize grain protectants against Larger Grain Borer, ABSTRACT Prostephanus truncatus (Horn)
    (AFRICAN JOURNAL OF AGRICULTURE AND ALLIED SCIENCES (AJAAS), 2021) Adeoye, Abubakar Abdullahi; Ojo, James Adebayo; Ajao, Mufutau Adeyemi
    The Larger Grain Borer (LGB), Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae), is an important pest of maize in Nigeria. Botanical pesticides contain secondary metabolites that are useful in pest control and thus aid in agricultural pest management. The study examined the bioactivities of ethanolic and aqueous extracts of leaves of each Hyptis suaveolens and Tephrosia vogelii on LGB in stored maize. The extracts of H. suaveolens and T. vogelii leaves were applied at the rates of (0.05, 0.1, 0.2, 0.3 and 0.5ml/10g of maize grains) at dosage level and (2.5, 5.0, 7.5, 10.0, and 15.0%) at concentration level and were replicated 3 and 5 times respectively. Results showed the potency of the tested botanicals to be dose dependent. The extracts of H. suaveolens and T. vogelii leaves were found to be toxic to P. truncatus. The two extracts were observed to be toxic to P. truncatus, increased mortality, improved repellence, inhibited reproduction, caused grain damage and weight loss on stored maize at the highest dose and concentration. The results suggest that leaf extracts of H. suaveolens and T. vogelii were effective as toxicants and grain protectants against Larger Grain Borer and can be used in Integrated Pest Management (IPM) practices
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    Species composition, relative abundance, and diversity of termites (Blattodea: Insecta: Isoptera) in the Kwara State Univerity Campus, Malete, Kwara State, Nigeria
    (AGRICULTURA TROPICA ET SUBTROPICA, 2024-08-25) Adeoye, Abubakar Abdullahi; Ajao, Adeyemi Mufutau; Ojo, James Adebayo
    Termites are widely dispersed throughout the tropics and attain the highest diversity and abundance in the rainforests of Africa. Understanding their diversity in areas with human activities can provide insights into the local biodiversity and health of the ecosystem. The present study investigated the abundance and diversity of termite species at the Kwara State University campus. The study area was divided into five zones, and thorough examinations of all microhabitats were conducted to detect termite presence. Random handpicking and transect sampling methods were employed to evaluate termite diversity. There were 353 instances of termites encountered between May 2021 and August 2022. The analysis revealed eight termite species in seven genera and three subfamilies. Among these, Trinervitermes geminatus had the highest relative abundance at 48.7 %, whereas Fulleritermes tenebricus had the lowest at 1.98 %. All identified species belonged to the family Termitidae, with subfamilies Nasutitermitinae accounting for 50.7 %, Macrotermitinae for 37.7 %, and Termitinae for 11.6 % of the species. Grass-feeding Trinervitermes geminatus was the most frequently collected species, followed by fungus‑growing Macrotermes subhyalinus; both were found across all five campus zones. The species diversity and richness indices observed in the five zones were moderately high. The considerable abundance of termites within the university campus suggests their significance in the ecosystem. There is a need to document termite species present in an ecosystem with human activities because it helps to monitor biodiversity loss in the environment.
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    Species composition, relative abundance, and diversity of termites (Blattodea: Insecta: Isoptera) in the Kwara State Univerity Campus, Malete, Kwara State, Nigeria
    (AGRICULTURA TROPICA ET SUBTROPICA, 2024-08-25) Adeoye, Abubakar Abdullahi; Ajao, Adeyemi Mufutau; Ojo, James Adebayo
    Termites are widely dispersed throughout the tropics and attain the highest diversity and abundance in the rainforests of Africa. Understanding their diversity in areas with human activities can provide insights into the local biodiversity and health of the ecosystem. The present study investigated the abundance and diversity of termite species at the Kwara State University campus. The study area was divided into five zones, and thorough examinations of all microhabitats were conducted to detect termite presence. Random handpicking and transect sampling methods were employed to evaluate termite diversity. There were 353 instances of termites encountered between May 2021 and August 2022. The analysis revealed eight termite species in seven genera and three subfamilies. Among these, Trinervitermes geminatus had the highest relative abundance at 48.7 %, whereas Fulleritermes tenebricus had the lowest at 1.98 %. All identified species belonged to the family Termitidae, with subfamilies Nasutitermitinae accounting for 50.7 %, Macrotermitinae for 37.7 %, and Termitinae for 11.6 % of the species. Grass-feeding Trinervitermes geminatus was the most frequently collected species, followed by fungus‑growing Macrotermes subhyalinus; both were found across all five campus zones. The species diversity and richness indices observed in the five zones were moderately high. The considerable abundance of termites within the university campus suggests their significance in the ecosystem. There is a need to document termite species present in an ecosystem with human activities because it helps to monitor biodiversity loss in the environment.