In 1885 Bradford replaced the atrophied eye of a 35-year-old sailor with the eyeball of a rabbit and reported a good cosmetic result without return of vision. Two years later May attempted, without success, to duplicate this result and conduded that the whole eyeball was too large a mass to transplant with the hope of retaining vitality in all of its parts. Gradually work turned from man to the...

Background & Aim: Tanacetum is a member of Asteraceae family and its twelve species such as Tanacetum walteri are endemic to Iran. In this investigation, chemical compounds and antimicrobial activity of essential oils of Tanacetum turcomanicum (Krash.) and Tanacetum walteri (C.Winkl.) were studied. Experimental: The pla...

Mechanisms that allow for the coexistence of two competing species that share a trophic level can be broadly divided into those that prevent competitive exclusion of one species within a local area, and those that allow for coexistence only at a regional level. While the presence of aphid-tending ants can change the distribution of aphids among host plants, the role of mutualistic ants has not ...

Parthenium (Parthenium hysterophorus L.), a major weed causing economic, environmental, and human and animal health problems in Australia and several countries in Asia, Africa, and the PaciÞc, has been a target for biological control in Australia since the mid-1970s. Nine species of insects and two rust fungi have been introduced as biological control agents into Australia. These include Carmen...

The Palaearctic species of the Gasteruption assectator aggregate (Hymenoptera, Gasteruptiidae) are revised and three species are recognised. Two species are re-instated: Gasteruption boreale (Thomson, 1883), stat. n. and Gasteruption nigritarse (Thomson, 1883), stat. n., and both are excluded from the synonymy with Gasteruption assectator (Linnaeus, 1758). The general distribution of both speci...