 Recent studies have attempted to determine whether, in fact, the reproduction of the colony (since heavily damaged by a forest fire in 1963 and road construction in the 1970s) has been entirely clonal.Two genotypes were found in samples taken from the colony, but they are thought to have arisen through somatic mutation rather than sexual reproduction.Unfortunately, the destruction of about 80% of the colony by fire and construction makes it impossible to definitively settle the question.