African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12485

Full Length Research Paper

Contact activities of Piper guineense (Schum and Thonn) and Eugenia aromaticum (L). (Merril and Perryl) extracts against larvae of hide beetles, Dermestes maculatus (Degger) (Coleoptera: Dermestidae)

Jatau A.
  • Jatau A.
  • Department of Laboratory Science, Ali shinkafi Polytechnic, Sokoto, Nigeria.
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Badmasi M. Z
  • Badmasi M. Z
  • Department of Laboratory Science, Ali shinkafi Polytechnic, Sokoto, Nigeria.
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Yahaya M. A
  • Yahaya M. A
  • Department of Biological Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria.
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  •  Received: 18 March 2020
  •  Accepted: 25 November 2020
  •  Published: 31 July 2023

Abstract

Contact activities of Piper guineense (Schum and Thonn) and Eugenia aromaticum (L). (Merril and Perryl) extracts in the control of Dermestes maculatus larvae infesting stored fish (Clarias gariepinus) were investigated under laboratory condition (28 ±3°C and 65±5% RH). The extracts were tested by application of 2.0 µL each to ten third instars larvae using micro pipette at a concentration of 6.00, 10.00 and 20.00% of each of plants extracts (methanol, n-hexane and ethyl acetate). Mortality was recorded at 1, 2, 3 and 7 days of post treatments. The observed mortality was dose and exposure-dependents. All the extracts significantly enhance larval mortality (P>0.05) when compared with control. The n-hexane and ethyl-acetate extracts of P. guineense at 20% concentration induced the highest mortality of 86.66%, lowest mortality of 56.66% was observed on methanol fraction treated larvae after 7days of post treatments. The n-haxane of E. aromaticum extracts recorded the highest mortality (80.0%), followed by ethyl-acetate (76.66%) and methanolic (7.00%) fractions treated larvae at 20% concentration after 7 days of post-treatments. The results showed strong insecticidal activity in control of larvae of hide beetles infesting dried fish. 

 

Key words: Plant extracts, Piper guineense, Eugenia aromaticum, Dermestes maculatus.