title: Toxicity in sponges and holothurians: a geographic pattern.
abstract: Toxicity in sponges and holothurians is inversely related to latitude and may reach 100 percent for holothurians in high-diversity coral reefs. Evidence from approximately 700 experiments and from underwater observations suggests that predation by fish has resulted in natural selection for noxious and toxic chemical compounds in species within these taxa.
authors.forename: G J
authors.initials: GJ
authors.lastname: Bakus
authors.forename: G
authors.initials: G
authors.lastname: Green