Study of Asian common toad reveals three divergent groups

Most species are negatively affected when humans transform natural habitats into urban areas and agricultural lands, but a few species actually benefit from these activities. These species—called human commensals—thrive in human-modified environments. One example, the Asian common toad (Duttaphrynus melanostictus), is extremely abundant in villages, towns, cities and agricultural areas across much of Southeast Asia, where it feeds on insects that are attracted to artificial lights. B