摘要：We surveyed microsite conditions in the oviposition location used by female saw-combed fishflies (Nigronia serricornis) to investigate the relationship between egg hatching success and egg mass features and oviposition site selection. Egg-laying females showed a significant tree species preference at two of three sites sampled. Leaves used as ovipositon sites differed in length, width, area, and height among sites, but differences in oviposition site characteristics were attributable to stream habitat conditions, not preference. Egg hatchmg rates were very high (ca. 95%) and did not differ between streams. Egg mass size was sipficantly different among sites, but average egg size was not. Egg size was not correlated with egg mass size, but hatching rate was significantly correlated with egg mass size. Recruitment estimates ranged from 95 hatchlings per m 2 . Although leaf height, leaf length, and stream site were significant in predicting egg mass size, females showed great plasticity in selection of oviposition sites and no correlations were found between hatching success and microsite conditions.
