Geographical variation of the pyrgomorphid grasshopper, Zonocerus variegatus L. (Orthoptera: Pyrgomorphidae) in southern Nigeria
Bamidele A.O. and Muse W.A.
Mean body weights of male and female Zonocerus variegatus varied with location. In the male, the mean body weight vary significantly between Owerri specimens (0.598±0.032 g) and Ado-Ekiti specimens (0.868±0.031 g). The mean weights of ovary with eggs, the mean number of the eggs in the ovary and the mean number of eggs from pods deposited by the female Z. variegatus fluatuated significantly among the locations. There was a positive correlation between the weight of ovary with eggs and the body weight of females in all the locations. The weight of accessory reproductive glands-seminal vesicle bundles were dependent on the weights of the testes for males in all locations.rnBody size, seems to determine the reproductive potential of Z. variegatus since larger females possessed bigger ovaries with higher egg number and of larger size in the pods. Mean number of eggs from pods vary significantly with location indicating differential fecundity with locality. The study showed that females from Ile-Ife, Ado-Ekiti, Owerri, and Port-Harcourt were more fecund thanrnthose from Asaba and Abakaliki. Aspect of the biology of Z. variegatus from parts of southernrnNigeria.