Sexual Reproduction of Hemidinium nasutum Alias Gloeodinium montanum

Pfiester, Lois A.; Highfill, Joe F.

doi:10.2307/3226783

Cited by 6 publications

(2 citation statements)

References 2 publications

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“…However, division in the motile stages was not observed in Pfiesteria, Dissodinium, and Pyrocystis (Elbra¨chter & Drebes 1978;Parrow & Burkholder 2004). V. rugosum also differs from Gloeodinium montanum Klebs and Alexandrium hiranoi Kita and Fukuyo in that cyst division of the latter two species give rise to gametes for subsequent sexual conjugation (Kita et al 1993;Pfiester & Highfill 1993). The fact that V. rugosum possesses two modes of asexual reproduction may have ecological significance, particularly as V. rugosum divided more quickly in the motile stage (B 1 d) than in the NM cell stage ( 4 d).…”

Section: Discussionmentioning

confidence: 99%

The first report ofVulcanodinium rugosum(Dinophyceae) from the South China Sea with a focus on the life cycle

Zeng

Smith

et al. 2012

New Zealand Journal of Marine and Freshwater Research

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An individual non-motile (NM) cell was isolated from a surface sediment sample collected in Guangxi, China and subsequently established as a dinoflagellate strain in culture. The motile cells are 22.5Á32.5 mm long and 20.0Á30.0 mm wide, with a plate formula of Po, X, 4?, 3a, 7ƒ, 6c, 5(?)s, 5ƒ?, 2ƒƒ, fitting the description of Vulcanodinium rugosum. The Chinese strain shares 99.8%, 97.4% and 96.7% similarity (LSU sequence) with those from Australasia, France and Japan. Asexual division of V. rugosum takes place either in the thecate motile stage or within a NM division cell. Motile cells divided by binary fission inside the parent cell and transformed to NM division cells within 24 h. The NM cell underwent one to three consecutive divisions within the parent wall. The divisions were not always synchronous and neither was the release of motile cells from the NM cells. It generally took 4 to 6 days for the NM cells to complete one division. NM cells survived for 1 month at 4 8C in the dark, suggesting that they might play an important role in species dispersal. A novel pinnatoxin was detected at 20 pg cell(1 and no other known pinnatoxins (AÁG) were detected.

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Section: Discussionmentioning

confidence: 99%

The first report ofVulcanodinium rugosum(Dinophyceae) from the South China Sea with a focus on the life cycle

Zeng

Smith

et al. 2012

New Zealand Journal of Marine and Freshwater Research

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“…In culture, sexual reproduction in some species has been induced with nutrient stress (nitrogen and/or phosphorus limitation) and environmental variations such as temperature and light (e.g. Walker 1982, Anderson et al 1984, Kelley and Pfiester 1990, Pfiester and Highfill 1992.…”

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confidence: 99%

EVIDENCE FOR SEXUAL REPRODUCTION IN THE MARINE DINOFLAGELLATES, PYROCYSTIS NOCTILUCA AND PYROCYSTIS LUNULA (DINOPHYTA)

Seo¹,

Fritz²

2001

Journal of Phycology

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Evidence for sexual reproduction was observed in two oceanic dinoflagellate species, Pyrocystis noctiluca Murray ex Haeckel and Pyrocystis lunula (Schütt) Schütt. Observations suggest that cells underwent fertilization as opposed to cell division because of the following: first, fusing cells had a conspicuous pore (fusion pore) connecting the two gametes; dividing cells lacked this feature. In culture, about 0.1% of P. noctiluca cells had a fusion pore, which serves as a possible site for gamete recognition on the cell wall. Second, we document a temporal progression of plasmogamy and karyogamy. Fusion events in both species were observed at the beginning of the day, whereas division stages were most apparent at the end of the day.

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Dinoflagellates

Carty

Parrow

2015

Freshwater Algae of North America

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Sexual Reproduction of Hemidinium nasutum Alias Gloeodinium montanum

Cited by 6 publications

References 2 publications

The first report ofVulcanodinium rugosum(Dinophyceae) from the South China Sea with a focus on the life cycle

The first report ofVulcanodinium rugosum(Dinophyceae) from the South China Sea with a focus on the life cycle

EVIDENCE FOR SEXUAL REPRODUCTION IN THE MARINE DINOFLAGELLATES, PYROCYSTIS NOCTILUCA AND PYROCYSTIS LUNULA (DINOPHYTA)

Dinoflagellates

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