| induction of egg hatching by high humidity in the cicada cryptotympana facialis. | the timing of egg hatching in cryptotympana facialis was examined in relation to short-term weather conditions. the brief underwater submergence, once a week, of dead twigs bearing cicada egg nests resulted in high hatching rates both at 25 degrees c and under outdoor conditions protected from rainfall. under outdoor conditions with natural rainfall, most eggs hatched on rainy days. there was a significant positive correlation between the number of hatching eggs and daily relative humidity (rh). ... | 2006 | 17069843 |
| urban soil compaction reduces cicada diversity. | urbanization converts animal habitats into globally homogeneous environments. consequently, urban communities have low diversity and are often dominated by a few species. however, proximate environmental factor(s) causing community degradation have rarely been identified among diverse and co-varying urban parameters. | 2015 | 26605064 |
| a cicada that ensures its fitness during climate warming by synchronizing its hatching time with the rainy season. | a shift in phenology due to climate change is associated with some recent changes in populations, as it can disrupt the synchrony between organisms' requirements and resource availability. this conceptual framework has been developed mostly in systems of trophic interactions. many coincidental changes, however, are involved in trophic interactions, preventing us from describing the direct impact of phenological shifts on fitness consequences. here we address the phenological relationship in a si ... | 2011 | 22132784 |
| diapause and prolonged development in the embryo and their ecological significance in two cicadas, cryptotympana facialis and graptopsaltria nigrofuscata. | the seasonal timing mechanism of egg hatching was examined in two cicadas, cryptotympana facialis and graptopsaltria nigrofuscata, with different but overlapping geographical distributions. these species lay eggs in summer, and nymphs hatch in the summer of the following year after egg durations of 10-12 months. when eggs were maintained at 25 degrees c from oviposition, both the species entered embryonic diapause within 60 days irrespective of photoperiod, but at different developmental stages ... | 2008 | 18789945 |