シガテラ病域の有毒渦鞭毛藻綱新種Gambierdiscus toxicusの鎧板構造

安達 六郎; 福代 康夫

doi:10.2331/suisan.45.67

The Thecal Structure of a Marine Toxic Dinoflagellate Gambierdiscus toxicus gen. et sp. nov. Collected in a Ciguatera-endemic Area

Rokuro ADACHI, Yasuwo FUKUYO

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JOURNAL FREE ACCESS

1979 Volume 45 Issue 1 Pages 67-71

DOI https://doi.org/10.2331/suisan.45.67

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Published: January 25, 1979 Received: July 07, 1978 Available on J-STAGE: February 29, 2008 Accepted: - Advance online publication: - Revised: -
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Date of correction: February 29, 2008 Reason for correction: - Correction: ABSTRACT Details: Wrong : Gambierdiscus toxicus gen. et sp. nov. is described. This is a toxin producing dinoflagellate which was collected in a ciguatera-endemic area. Observations were made using both a light microscope with or without phase-contrast and a scanning electron microscope. This species is distincdve in its antero-posterior compressed body shape, with a circular narrow deep cingulum and a deep hollow sulcus. The theca consists of 33 plates: Po, 3′, Oa, 7″, 6c, 8s, 6″′, 1p, 1″″. The plate pattern of this species is characteristic in having extremely reduced precingulars 1″ and 7″, which are situated between apical 1′ and the sulcal excavation and are clearly separate from apical 2″ and 4″. These features and others indicate that this genus should be assigned to the Heteraulacaceae family. This species is always sessile and attaches to dead coral and seaweed, especially brown alga, Turbinaria ornata J. AGARDH. A large number of this species were taken around the Gambier Islands, French Polynesia, in May 1975.
Right : Gambierdiscus toxicus gen. et sp. nov. is described. This is a toxin producing dinoflagellate which was collected in a ciguatera-endemic area. Observations were made using both a light microscope with or without phase-contrast and a scanning electron microscope. This species is distincdve in its antero-posterior compressed body shape, with a circular narrow deep cingulum and a deep hollow sulcus. The theca consists of 33 plates: Po, 3', Oa, 7", 6c, 8s, 6"', 1p, 1"". The plate pattern of this species is characteristic in having extremely reduced precingulars 1" and 7", which are situated between apical 1' and the sulcal excavation and are clearly separate from apical 2" and 4". These features and others indicate that this genus should be assigned to the Heteraulacaceae family. This species is always sessile and attaches to dead coral and seaweed, especially brown alga, Turbinaria ornata J. AGARDH. A large number of this species were taken around the Gambier Islands, French Polynesia, in May 1975.

Date of correction: February 29, 2008 Reason for correction: - Correction: PDF FILE Details: -

Abstract

Gambierdiscus toxicus gen. et sp. nov. is described. This is a toxin producing dinoflagellate which was collected in a ciguatera-endemic area. Observations were made using both a light microscope with or without phase-contrast and a scanning electron microscope. This species is distincdve in its antero-posterior compressed body shape, with a circular narrow deep cingulum and a deep hollow sulcus. The theca consists of 33 plates: Po, 3', Oa, 7", 6c, 8s, 6"', 1p, 1"". The plate pattern of this species is characteristic in having extremely reduced precingulars 1" and 7", which are situated between apical 1' and the sulcal excavation and are clearly separate from apical 2" and 4". These features and others indicate that this genus should be assigned to the Heteraulacaceae family. This species is always sessile and attaches to dead coral and seaweed, especially brown alga, Turbinaria ornata J. AGARDH. A large number of this species were taken around the Gambier Islands, French Polynesia, in May 1975.

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