PROMOTING ACCESS TO AFRICAN RESEARCH

Journal of East African Natural History

Log in or Register to get access to full text downloads.

Remember me or Register



DOWNLOAD FULL TEXT Open Access  DOWNLOAD FULL TEXT Subscription or Fee Access

A comparison of the grasshopper fauna (Orthoptera: Acridoidea & Eumastiacoidea) of the Uluguru Mountains and the East Usambara Mountains, Tanzania

A Hochkirch

Abstract




The grasshopper fauna of the Uluguru Mountains and the East Usambara Mountains is compared. There is a marked relationship between habitat and similarity in species composition. The faunal similarity between sites rises with distance from the forest, evidently because the savannah species are widespread species that are recently colonising degraded areas, while forest faunas have a high level of endemism and flightlessness, indicating a long history of isolation and evolution. Flightlessness seems to be a result of a lower investment in wing and egg production and higher investment in prolonging life span, supported by a high persistence of the habitat and a high predation pressure.

Journal of East African Natural History Vol. 87 (1&2) 1998: pp. 221-232



AJOL African Journals Online