Invasive Species Compendium

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Abstract

Tetrasporangial plants of Monosporus indicus (Ceramiales, Rhodophyta): a new alien in the Mediterranean Sea.

Abstract

We provide the first detailed description of the tetrasporophyte of the red algal species Monosporus indicus Børgesen (Wrangeliaceae, Ceramiales) and its first record from the Mediterranean Sea. This prostrate, filamentous epiphytic species, which has been recorded from tropical and subtropical locations in the Indian, Pacific and Atlantic Oceans, has invaded and established healthy populations in the warm Levant Mediterranean Sea of Israel. Plants invariably have propagules and are rarely observed with tetrasporangia. With the description of tetrasporangia in M. indicus, doubt is cast on the integrity of the genus Desikacharyella because their presence as well as sexual reproduction was used to separate that genus from Monosporus.