Diversity and distribution of species of the planktonic dinoflagellate genus Alexandrium (Dinophyta) from the tropical and subtropical Mexican Pacific Ocean

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-11-06 DOI:10.1515/bot-2023-0037

David U. Hernández-Becerril, Jorge G. Pichardo-Velarde, Rosalba Alonso-Rodríguez, Ebodio Maciel-Baltazar, Lourdes Morquecho, Karina Esqueda-Lara, Sofía A. Barón-Campis, Nataly Quiroz-González

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引用次数: 1

Abstract

Abstract Species of the dinoflagellate genus Alexandrium are marine and planktonic forms, widely distributed, and some are recognized to form harmful algal blooms and to produce saxitoxins causing Paralytic Shellfish Poisoning in humans, and other toxins. We studied the species composition of Alexandrium in tropical and subtropical coastal areas of the Mexican Pacific: from the southern Gulf of California to the Gulf of Tehuantepec. Eleven Alexandrium species were identified, described, and illustrated using light microscopy, and occasionally scanning electron microscopy for certain species. Additionally, the genetic characterization of seven strains and four species, was performed, using sequences of the D1/D2 LSU rDNA and ITS regions. We identified the species (morphospecies): Alexandrium affine , A . gaarderae , A . globosum , A . leei , A . margalefii , A . minutum , A . monilatum , A. pseudogonyaulax , A . tamarense , A . tamiyavanichii , and A . tropicale . Of these, A. affine , A . leei , A . minutum , A . monilatum , A. pseudogonyaulax , A . tamarense and A . tamiyavanichii have been widely recognized as harmful algae. Alexandrium gaarderae , A . globosum and A . tropicale are new records for the Mexican Pacific. This is the first morphological documentation of A. pseudogonyaulax . Future studies of the genus might increase its species richness if more cultures are established and metabarcoding approach is used.

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热带和亚热带墨西哥太平洋亚力山德拉浮游鞭毛藻属物种的多样性和分布

二鞭毛藻属亚历山大藻属属是海洋和浮游生物，分布广泛，其中一些被认为可以形成有害的藻华，产生导致人类麻痹性贝类中毒的蛤毒素等毒素。本文研究了墨西哥太平洋热带和亚热带沿海地区从加利福尼亚湾南部到特万特佩克湾的亚历山大属植物的种类组成。利用光学显微镜对11种亚历山大属植物进行了鉴定、描述和说明，偶尔也用扫描电子显微镜对某些物种进行了说明。此外，利用D1/D2 LSU rDNA和ITS区域的序列，对7株和4种进行了遗传鉴定。我们鉴定的种(形态种):仿射亚历山大，A。园丁，A;解析:A。李，A。玛格莱菲，A。答案:A。monilatum, A. pseudogonyaulax, A。tamarense, A。tamiyavanichii;硕士。其中，A，仿射，A。李，A。答案:A。monilatum, A. pseudogonyaulax, A。tamarense和A。水藻已被广泛认为是有害藻类。亚历山德拉(Alexandrium gaarderae);选A。热带气旋是墨西哥太平洋的新纪录。这是假骨芽孢霉的第一次形态学记录。如果建立更多的培养物并采用元条形码方法，可能会增加该属植物的物种丰富度。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.