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Journal of Entomology and Zoology Studies
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P-ISSN: 2349-6800, E-ISSN: 2320-7078

Journal of Entomology and Zoology Studies

2019, Vol. 7, Issue 5
Ecozone biodiversity of selected leaf beetles (Chrysomelidae) on crops and ornamental plants in Southwestern Nigeria

Oyelade OJ and Ogbogu SS

This study investigated the diversity of Leaf Beetles in different ecological zones within southwestern Nigeria. The sampling sites were selected within the mangrove forest, rainforest and the derived savannah ecozones of the region. This study covered the six states of southwestern Nigeria (Lagos, Ogun, Oyo, Osun, Ekiti and Ondo states). Collected specimens were carefully documented and preserved for subsequent mounting and identification in the laboratory. The diagnostic characters of the adults of all the species collected were examined under the dissecting microscope (400x). Palaeontological statistics software package (PAST) was used to analyse the data while Non-parametric t-test was used to interpret the data.
A total of thirty seven species were recorded in the rainforest ecozone. Twenty nine Leaf Beetles species are present in the derived savannah, indicating that this zone is less diverse when compared with the rainforest, in terms of the number of species recorded. There was no species of Donacinae subfamily recorded in derived savannah. Eleven species of Leaf Beetles were recorded in mangrove forest and there was no species of Galerucinae subfamily recorded in the mangrove zone. Distribution of Leaf Beetles is higher in rainforest zone compared to any other zone in the region. This study find out that subfamily Chrosomelinae is the largest in the study area and Galerucinae, Donacinae, and Criocerinae subfamilies are not as large as subfamily Chrysomelinae in the region. The subfamily Chrysomelinae contained 13 species in 10 genera, while Galerucinae had five species in two genera.
The levels of infestation were high for Callosobruchus maculatus, Bruchidius imbricornis, Lilioceris lilli, Cryptocephalus nitidulus, C. decemmaculatus, Cassida compuncta, Phratora vitellinae, Prasocuris phellandrii and Chrysomela vigintipunctata in all the ecological zones in the region. This study also documented for the first time, the diversity and host-plant association of Leaf Beetles in the region.
Pages : 1294-1301 | 300 Views | 93 Downloads


Journal of Entomology and Zoology Studies Journal of Entomology and Zoology Studies
How to cite this article:
Oyelade OJ, Ogbogu SS. Ecozone biodiversity of selected leaf beetles (Chrysomelidae) on crops and ornamental plants in Southwestern Nigeria. J Entomol Zool Stud 2019;7(5):1294-1301.

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