Control of chicken body louse and dog ticks using some new pyrethroids

The present study was carried out to evaluate the efficacy of some new pyrethroids [Bayticol and Butox], as well as Ivomec through many routes of application against chicken body louse [Menacanthus spp.] and dog ticks [Rhipicephalus spp.]. The results revealed that Bayticol 1% in a dose 1 ppm/kg and Butox 7.5% in a dose 2 ppm/hen, have good efficacy for complete eradication of lice after 24 hours through pour-on application method. Also, the same dose gave the same results after 24 and 48 hours of Bayticol and Butox, respectively, through spot-on method, meanwhile Ivomec overcome the two pyrethroids through s.c. injection route concerning eradication of dog tick. The three tested insecticides give complete eradication of ticks in the high tested doses [Bayticol 10 ppm/10 kg, Butox 10 ppm/animal and Ivomec 100 mug/kg b. wt.] through pour-on and spot-on methods. In lower doses, the two pyrethroids [Bayticol and Butox] were more efficient through pour-on and spot-on methods, while Ivomec was the best one through s.c. injection. The laboratory trial revealed that Ivomec 1% considered as the best insecticide causing rapid mortality and prevent egg deposition and hatching under the tested dose in the laboratory. Using the insecticide for control of chicken body louse through pour-on and spot-on ways on the back of the chicken only were tested for the first time as method of application in chicken

Comparative morphological studies on haemotopinus quadripertusus fahrenholz, 1916[Anoplura: hoematopinidae] as first record from cattle in Istanbul [Turkey] and their relative species

In this study, Haematopinus quadripertusus was recorded for the first time from cattle in Istanbul, Turkey. Detailed description and measurements of both male and female parasites were conducted. Comparative morphological characters of that parasites and the related species were discussed

Studies on Rhinoestrus sp [diptera: Oestridae] larvae infesting donkeys [Equus asinus] in Egypt 1 Incidence and seasonal variations

Examination of 144 donkey heads at the postmortem during the period from September 1989 up to the end of August 1990 revealed that 88 [61.11%] donkeys were infested with rhinoestrus purpureus. The larvae were present in the 88 heads examined throughout the year with highest mean larval number during June [57.86]. The larvae were absent during November and December. The monthly prevalence of each 1st, 2nd and 3rd instar larvae was determined. Each larval instar occurred in two peak of infestations; March and June for the 1st and 2nd 1arval stages and March and August for the 3rd larval stage. The size of infestation showed that the percentage of donkeys infested with 1-50, 51-100 and 101-150 1arvae were 50.69, 9.03 and 1.39% respectively. It was concluded that, two generations of R. purpureus occurred during the year and the adult flies were active during two seasons; from mid-January to mid-April and from early June to late September. Two annual treatment of donkeys during March and June were recommended to eliminate most of the 1arvae from infested donkeys

prevalence of Hypoderma lineatum and Hypoderma bovis [diptera: Oestridae] infesting cattle in Istanbul region, Turkey

Out of 2326 cattle examined at Istanbul abattoir in 1990-1991, 45 [1.9%] were found to be infested with Hypoderma lineatum and Hypoderma bovis, with annual mean larval burden of 22.5 larvae per cattle. The more prevalent species was Hypoderma lineatum [1.2%]. For both species, the highest mean larval burden per cattle was in December and the lowest mean was in February. The intensity and infestation rate were significantly different between adults and calves where they were greatest in adults. 970 larvae were found in the skin; 679 [70%] of them were Hypoderma lineatum and only 291 [30%] were Hypoderma bovis