Title: The Biological bulletin
Identifier: biologicalbullet158mari (find matches)
Year: [1] (s)
Authors: Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983
Subjects: Biology; Zoology; Biology; Marine Biology
Publisher: Woods Hole, Mass. : Marine Biological Laboratory
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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BIOLOGY OF AGLAOPHAMUS NEOTENUS 111
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FIGURE 3. Larvae of Aglaophamus ncotcnus, new species: A, early trochopliore; B, trocho- phore; C, Metatrochophore I with diatom present in gut; D, Metatrochophore II, E, juvenile. trochophore I stage in the laboratory; however, Metatrochphore I and II stages were both collected from plankton tows and from sediment containing adult worms at Wentworth Point. These planktonic stages survived in the laboratory, and metamorphosed into juveniles whose characteristics were so like the adults as to dispel any doubt that they were young specimens of Aglaophamns ncotenns. Metatrochophore I. The simplest form of segment larvae, the first meta- trochphore (Fig. 3C), appears in the plankton in May. When viewed laterally, the larvae are triangular in shape. Eyes are seen for the first time, a pair are lateral on the head, and slightly anterior to the prototroch. They are simple, round spots of red pigment granules. The prototroch is denser, but essentially the same as in the trochophore. A teleotroch has developed as a single band of long cilia

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