Colonization pattern of aquatic hyphomycetes on persistent substrata in some irrigation channels of Lahore

The aquatic hyphomycetes showed a characteristic pattern of colonization on baited branches of Callistemon citrinus and culms of Saccharum bengalense in tropical irrigation water channels in Lahore. A total of twelve species of aquatic hyphomycetes colonized these substrata. Some of the species could be identified as early or late colonizers on these baited materials. Sporidesmium ensiforme and Mycofalcella iqbalii showed the most distinctive pattern. Sporidesmium ensiforme was the early colonizer and showed maximum colonization during the first two weeks and then it declined while M. iqbalii colonized it in the second week with increasing colonization till the end of baiting period. Other early colonizer species included Lemonniera aquatica and an unidentified species Sp C whereas Articulospora proliferata and Flagellospora fusarioides appeared to be the late colonizers.