ific . ▁These ▁three ▁provinces ▁have ▁distinct ▁ranges ▁of ▁species , ▁indicating ▁a ▁high ▁degree ▁of ▁bi oge ographic ▁separation . ▁Where ▁s acc og loss ans ▁are ▁present ▁further ▁from ▁the ▁equ ator , ▁in ▁places ▁such ▁as ▁Australia ▁or ▁Japan , ▁divers ity ▁is ▁lower , ▁and ▁the ▁species ▁present ▁are ▁typically ▁tropical ▁species ▁that ▁have ▁a ▁higher ▁toler ance ▁for ▁temperature ▁variation . ▁ ▁Their ▁temper ate ▁distribution ▁closely ▁corresponds ▁to ▁the ▁distribution ▁of ▁their ▁important ▁food ▁source ▁Ca uler pa . ▁ ▁They ▁typically ▁live ▁at ▁very ▁low ▁population ▁dens ities , ▁making ▁scientific ▁study ▁of ▁the ▁group ▁difficult . ▁ ▁Use ▁of ▁ing ested ▁cell ular ▁material ▁▁ ▁The ▁sac og loss ans ▁can ▁use ▁the ▁ch lor op last s ▁of ▁the ▁alg ae ▁on ▁which ▁they ▁feed , ▁which ▁they ▁keep ▁alive ▁for ▁hours ▁to ▁months ▁after ▁their ▁ing estion . ▁ ▁They ▁maintain ▁the ▁cells ▁and ▁met abol ise ▁the ▁photos yn th etic ▁products ; ▁this ▁process ▁is ▁term ed ▁kle ptop last y , ▁and ▁the ▁sac og loss ans ▁are ▁the ▁only ▁animals ▁to ▁employ ▁it ; ▁some ▁c ili ates ▁and ▁for aman if era ▁( pro t ists ) ▁also ▁employ ▁the ▁strategy . ▁Sac og loss ans ▁have ▁been ▁known ▁to ▁surv ive ▁for ▁months ▁living ▁sole ly ▁on ▁the ▁photos yn th etic ▁products ▁of ▁their ▁acquired ▁pl ast ids . ▁ ▁This ▁process ▁is ▁somewhat ▁myst ifying , ▁as ▁the ▁up keep ▁of ▁ch lor op last