Allogromia laticollaris: a foraminiferan with an unusual apogamic metagenic life cycle. [Aquatic protozoa]

The life cycles of three strains of Allogromia laticollaris, a monothalamous foraminiferan, were studied. Each of the strains had a different, nonclassical, and basically apogamic, life cycle. The Cold Spring Harbor (CSH) strain regularly alternated between two agamontic forms: agamont I (uninucleate and diploid) and agamont II (multinucleate and diploid). The complete life cycle took 26 days. Sexual reproduction was rare (0.01%) and autogamous. Small numbers of animals also underwent budding, binary fission, and cytotomy. The life cycles of the Towd Point (TPA) and Sippewissett (SIP) strains were comparatively abbreviated. Agamont II dominated their typical life cycles which were completed in 16 to 18 days. The life cycle of SIP is basically a continuous cycling of the agamont II phase. Approximately 75% of the schizozoites of the TPA strain develop into agamont II. The other 25% alternate between agamont II and agamont I phase. (auth)

[1]  John J. Lee,et al.  A NUTRITIONAL ANALYSIS OF A SUBLITTORAL DIATOM ASSEMBLAGE EPIPHYTIC ON ENTEROMORPHA FROM A LONG ISLAND SALT MARSH 1, 2 , 1975 .

[2]  Michael Gochfield.  Terms for Highly Similar Species , 1974 .

[3]  John J. Lee,et al.  Trophic Dynamics and Niches of Salt Marsh Foraminifera , 1973 .

[4]  G. Steyskal.  The Meaning of the Term ‘Sibling Species’ , 1972 .

[5]  John J. Lee,et al.  Autogamy in Allogromia laticollaris (Foraminifera) , 1970 .

[6]  John J. Lee,et al.  Apparent Indispensability of Bacteria in Foraminiferan Nutrition , 1969 .

[7]  John J. Lee,et al.  Quantitative Studies on the Growth of Allogromia laticollaris (Foraminifera) , 1969 .

[8]  R. Hedley,et al.  Clone culture studies of a new rosalinid foraminifer from Plymouth, England and Wellington, New Zealand , 1967, Journal of the Marine Biological Association of the United Kingdom.

[9]  John J. Lee,et al.  Tracer Experiments in Feeding Littoral Foraminifera , 1966 .

[10]  John J. Lee,et al.  Growth and Physiology of Foraminifera in the Laboratory; Part 4 — Monoxenic Culture of an Allogromiid with Notes on its Morphology , 1963 .

[11]  John J. Lee,et al.  Growth and Physiology of Foraminifera in the Laboratory: Part 3: Initial Studies of Rosalina floridana (Cushman) , 1963 .

[12]  R. Hedley,et al.  Confusion between Gromia oviformis and Allogromia ovoidea , 1958, Nature.

[13]  M HIMES,et al.  A triple stain for deoxyribonucleic acid, polysaccharides and proteins. , 1956, Stain technology.

[14]  N. Kurnick.  Pyronin Y in the methyl-green-pyronin histological stain. , 1955, Stain technology.

[15]  R. O. Erickson,et al.  Perchloric acid in the cytochemistry of pentose nucleic acid. , 1949, Science.

[16]  J. Tomasi.  Improving the Technic of the Feulgen Stain , 1936 .