The tick burdens of 115 Merino sheep, slaughtered over a period of 15 consecutive months on a farm in the north-eastern Orange Free State, were determined. A total of 7 ixodid and 1 argasid tick species were recovered and the seasonal abundances of Boophilus decoloratus, Hyalomma marginatum rufipes, Margaropus winthemi and Rhipicephalus evertsi evertsi were determined. One hundred and forty-nin...

We investigated the morphological characteristics of physiologically characterized neurones in the procerebrum (PC) of the terrestrial slug Limax marginatus. The electrophysiological characteristics of the neurones were determined using the perforated patch recording technique. By comparing the shapes and sizes of somata, we found that the somata of bursting neurones were larger and had more ob...

It has been previously reported that the incidence of acute rheumatic fever (ARF) in South Florida is less than in other metropolitan areas of the United States. It has been suggested that when acute rheumatic fever does occur the morbidity and mortality are significantly decreased. A five-year retrospective study of hospitalized cases revealed 98 episodes of ARF in 95 patients. The clinical ma...

The efficacy of an amitraz/cypermethrin pour-on preparation (1% w/v each) was tested against natural tick infestations of buffaloes, eland and blesbok in three separate trials. The eland were also treated with a 0.02% abamectin (w/v) acaricidal pour-on preparation. The amitraz/cypermethrin pour-on was effective against Amblyomma hebraeum, Rhipicephalus evertsi evertsi, Rhipicephalus appendicula...

The present study aimed to evaluate possible variations in the chemical composition and antimicrobial activity of essential oils extracted from Piper marginatum leaves obtained by hydrodistillation at pH4, pH7, pH10. When compared, profiles three were different. A reduction major phenylpropanoids Z-asarone, dillapiole, E-asarone was observed for samples pH4-EO pH10-EO as compared sample pH7- EO...

Seventy-two bass (Micropterus-spp.), mostly smallmouth, were collected from three areas of the Caddo River in west Arkansas and examined for the presence of Clinostomum marginatum metacercariae. Prevalence, mean abundance, and abundance for all fish were 68%, and 4.2 ±6.5, and 30, respectively. Fish from the upstream area near the headwaters were more heavily infested than those from further do...

The economic importance of tick infestation on camels are important as they are important meat and milk producer animals in the less vegetation area of Iran and their health and production are greatly affected by the high tick infestation. In this investigation, tick infestations on camels (Camelus dromedarius) were determined in Qeshm Island, Iran. A total number of 912 adult ticks (472 males ...

A total of 48 springbok, 48 gemsbok, 23 kudus and 6 giraffes were examined for ticks and lice, while 9 Burchell's zebras and 6 Hartmann's mountain zebras were examined only for ticks. Springbok and gemsbok were shot in both the Etosha National Park in the north and the Hardap Nature Reserve in the south of Namibia. All the other animals were shot in the Etosha National Park. A total of 7 ixodid...

Soil and water bioengineering (SWBE) is a feasible, economical ecologically friendly alternative to restore the riparian forest areas affected by Brumadinho mining tailings dam rupture. We evaluated vegetative propagation capacity cuttings initial development of nine native species Paraobepa River for use in SWBE techniques. From results it possible separate into two distinct groups, namely tho...