A thorny prob­lem

BBC Wildlife Magazine - - Wild February -

What? We’ve learned that a cac­tus’s thorns ac­tu­ally at­tract some her­bi­vores.

White-throated woodrats do make life hard for them­selves. Th­ese desert ro­dents eat cacti – and the prick­lier the bet­ter, ac­cord­ing to new re­search. It seems that the best-de­fended cacti are also the most nu­tri­tious, and that the woodrats use spini­ness as an in­di­ca­tion of the good­ness within. If a cac­tus’s spines are clipped, the woodrats lose in­ter­est.

SOURCE Oikos LINK http://bit.ly/1scoojz

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