Malassezia pachydermatis (M. pachydermatis) otitis is an important infectious disease of dogs throughout the world. In the present study, the presence, diagnosis, clinical signs and chemotherapy of M. pachydermatis were studied in clinical otitic dogs of Lahore and its suburbs. During two-year study period, a total of 200 ear cerumen samples from otitic dogs were examined microscopically. Of these, 46 (23%) were found positive for M. pachydermatis. The difference in the prevalence of infection between the pendulous ear and erected ear dogs as well as sex predilection was found nonsignificant (P>0.05). However, a significantly (P<0.05) higher prevalence (86.90%) was recorded in dogs of more than one years of age group. The animals determined positive for the M. pachydermatis were divided into two groups (A and B) and treated with Clotrimazole and Nystatin, respectively. Efficacy of both the antifungals was evaluated on the basis of reversal of clinical signs scoring and cytological examinations at 7, 14, 21-day post treatment. The overall efficacy of Clotrimazole and Nystatin was 73% and 68%, respectively. Clotrimazole showed better results as compared to Nystatin in accomplishing cure rate from mycological infection. It was concluded that M. pachydermatis is a significant cause of otitis in dogs wherein Clotrimazole proves to be a more effective drug in eliminating the infection in the affected Dogs.

초 록 1975년 11월1977년 11월 사이에 광주지방의 논거미의 분포상과 계절적 밀도변동을 조사하여 다음과 같은 결과를 얻었다. 1. 광주산로 논거미로서 13과 24속 58종(7미확정종포함)을 확인하였으며 기중 한국산 논거미로 2종, 광주산 논거미로 22종을 추가하였다. 2. Cornicularia vulgaris OL(쌍코뿔 애접시거미)는 한국미기록종이었다. 3. 광주산 논거미의 우세과는 Erigonidae와 Lycosidae이며 특히 Erigonidae는 타지방에 비해 단연 우세하였다. 4. 우점종은 Gnathonarium dentatum(WIDER)가 , Oedothorax insecticeps BOES. et STR.가 로 월등한 우점현상을 나타냈다. 5. 기지 수원, 대구에서는 우세과 Lycosidae, 우점종 Pirate subpiraticus(BOES. et STR.)인데 비해 본지방에서 는 우세과 Erigonidae 우점종 Gnathonarium dentatum(WIDER)로 남북관계 내지 동서현상이 보였다. 6. 계절적 밀도 변동은 월동전인 11월이 최고이고, 월동후인 3,4월이 최저이며 7,8월이 중간 Peak인W자형 분포상을 나타낸다.