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Selective hunting may be making Madagascar’s largest bats smaller, study says

the gist

Madagascar's largest fruit bat, the Malagasy flying fox, appears to be getting smaller, and researchers think hunting may be part of the reason. The species feeds on fruit and nectar and is an important pollinator and seed disperser across the island. Hunting is legal from May to September, and some hunters use nets while others shoot bats for markets and restaurants. Researchers from the Field Museum in Chicago measured 121 specimens collected over 150 years and found that skulls had become significantly smaller since 1980, while teeth had not changed. They suggest hunters may be selectively taking the largest bats because they yield more meat, which would shift the population's average size over time.

so what

It is a rare case where a museum collection and field observation together reveal how hunting can change a wild animal's body size, with implications for the pollination and seed dispersal these bats provide.

fun fact

The Malagasy flying fox is found only on Madagascar.

Mongabay · CC BY-ND 4.0