New records of benthic diatoms from natural grazing surfaces of abalone (Haliotis spp.) in the Baja California Peninsula

The paper provides 39 new records of benthic diatoms for Isla Magdalena and 23 for the Baja California Peninsula. Specimens we recollected on rocky substrates from an abalone fishing site in April 1999 and 2000. Epilithic and epiphytic forms are included which represent a potentially useful diet for rearing young and adult abalone Ander culture conditions. The guts of grazers collected in si tu contained abundant diatoms of several species, mainly of the genus Cocconeis