Oceanic mixotrophic flatworms

Anatomy of Polyclad Flatworms

As their name suggests, these free living worms are generally dorso-ventrally flattened being no more than a few millimeters thick. Sizes range from less than one millimeter to over 30 centimeters. Most polyclads are extremely delicate, typically elongate and/or oval with a smooth dorsal surface. Some genera, however, display dorsal papillae (Acanthozoon, Thysanozoon). Since the worms have tent...

Ecophysiology of mixotrophic flagellates

Mixotrophic growth of Hydrogenomonas eutropha.

Mixotrophic growth conditions were established by the addition of lactate to cultures of Hydrogenomonas eutropha growing autotrophically in a gaseous environment of H(2), O(2), and CO(2) (6:2:1). The specific growth rate of mixotrophic cultures was double that of the autotrophic cultures, and lactate disappearance paralleled growth. Growth yields in mixotrophic cultures were significantly great...

Developmental Regulatory Genes in Parasitic Flatworms

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Some Polyclad Flatworms from the Hawaiian Islands

ONE MAY SUPPOSE that a rich polyclad fauna exists along the shores of the Hawaiian Islands, but our knowledge of Hawaiian polyclads is, in fact., very limited. As far as I can ascertain, only the follo.wing species are recorded from the Hawaiian Islands in the literature: Planocera hawaiiensis Heath, 1907; Taenioplana teredini Hyman, 1944; and 5tylochoplana inquilina Hyman, 1950. The first meri...