Recognition of two taxonomic varieties of Pyrodinium bahamense (Gonyaulacales, Dinophyceae): var. bahamense y var. compressum
Background and Aims: Pyrodinium is a monotypic genus with two varieties, var. bahamense in the Atlantic, non-toxic, and var. compressum in the Indo-Pacific and toxic. Recent findings of Paralytic Shellfish Poisoning (PSP) toxicity in populations of P. bahamense var. bahamense weakened the interest i...
| Autors principals: | , , , |
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| Format: | Online |
| Idioma: | spa |
| Publicat: |
Instituto de Ecología, A.C.
2022
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| Accés en línia: | https://abm.ojs.inecol.mx/index.php/abm/article/view/1967 |
| _version_ | 1799771409872846848 |
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| author | Zamudio Resendiz, María Eugenia Escarcega Bata, Alexis de Jesús Núñez Resendiz, María Luisa Meave del Castillo, María Esther |
| author_facet | Zamudio Resendiz, María Eugenia Escarcega Bata, Alexis de Jesús Núñez Resendiz, María Luisa Meave del Castillo, María Esther |
| author_sort | Zamudio Resendiz, María Eugenia |
| collection | ABM |
| description | Background and Aims: Pyrodinium is a monotypic genus with two varieties, var. bahamense in the Atlantic, non-toxic, and var. compressum in the Indo-Pacific and toxic. Recent findings of Paralytic Shellfish Poisoning (PSP) toxicity in populations of P. bahamense var. bahamense weakened the interest in accepting both varieties as independent, and even investigating the possibility of crypticism between them. In the few studies that have involved molecular evidence in the treatment of varieties, their taxonomic independence continues to be denied, despite the evident and consistent genetic separation shown in all analyses. Therefore, the aim of this study was to recognize, based on genetic evidence, the taxonomic independence of the two varieties of Pyrodinium: P. bahamense var. compressum and var. bahamense.
Methods: Based on three molecular markers (Lcf, LSU, SSU) of sequences available in Genbank, statistical parsimony networks and a concatenated phylogenetic analysis were constructed.
Key results: In all analyses, a genetic structure was consistently obtained for P. bahamense var. bahamense and another one for P. bahamense var. compressum. Furthermore, the correspondence of the resulting haplotypes and ribotypes was always the same in both networks and phylogeny, i.e., the samples from the Pacific Ocean were always placed in a different group than those from the Atlantic Ocean.
Conclusions: The evidence provided in this study demonstrated the reproductive isolation between both varieties, and even the possible presence of a not yet described third variety, as a consequence of which we propose the validity and taxonomic independence of P. bahamense var. compressum and P. bahamense var. bahamense. |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-1967 |
| institution | Acta Botanica Mexicana |
| language | spa |
| publishDate | 2022 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-19672022-02-23T07:08:49Z Recognition of two taxonomic varieties of Pyrodinium bahamense (Gonyaulacales, Dinophyceae): var. bahamense y var. compressum Reconocimiento de dos variedades taxonómicas de Pyrodinium bahamense (Gonyaulacales, Dinophyceae): var. bahamense y var. compressum Zamudio Resendiz, María Eugenia Escarcega Bata, Alexis de Jesús Núñez Resendiz, María Luisa Meave del Castillo, María Esther genetic variation Lcf LSU statistical parsimony network SSU. Lcf LSU red de parsimonia estadística SSU variación genética. Background and Aims: Pyrodinium is a monotypic genus with two varieties, var. bahamense in the Atlantic, non-toxic, and var. compressum in the Indo-Pacific and toxic. Recent findings of Paralytic Shellfish Poisoning (PSP) toxicity in populations of P. bahamense var. bahamense weakened the interest in accepting both varieties as independent, and even investigating the possibility of crypticism between them. In the few studies that have involved molecular evidence in the treatment of varieties, their taxonomic independence continues to be denied, despite the evident and consistent genetic separation shown in all analyses. Therefore, the aim of this study was to recognize, based on genetic evidence, the taxonomic independence of the two varieties of Pyrodinium: P. bahamense var. compressum and var. bahamense. Methods: Based on three molecular markers (Lcf, LSU, SSU) of sequences available in Genbank, statistical parsimony networks and a concatenated phylogenetic analysis were constructed. Key results: In all analyses, a genetic structure was consistently obtained for P. bahamense var. bahamense and another one for P. bahamense var. compressum. Furthermore, the correspondence of the resulting haplotypes and ribotypes was always the same in both networks and phylogeny, i.e., the samples from the Pacific Ocean were always placed in a different group than those from the Atlantic Ocean. Conclusions: The evidence provided in this study demonstrated the reproductive isolation between both varieties, and even the possible presence of a not yet described third variety, as a consequence of which we propose the validity and taxonomic independence of P. bahamense var. compressum and P. bahamense var. bahamense. Antecedentes y Objetivos: Pyrodinium es un género monotípico con dos variedades, var. bahamense en el Atlántico, no tóxica, y var. compressum en el Indo-Pacífico y tóxica. Hallazgos recientes de toxicidad por envenenamiento paralitico por mariscos (PSP), en poblaciones de P. bahamense var. bahamense, debilitaron el interés por aceptarlas como independientes, e incluso investigar la posibilidad de cripticismo. En los pocos estudios que han incorporado evidencia molecular en el tratamiento de las variedades, su independencia taxonómica sigue siendo negada, a pesar de la evidente y consistente separación genética presentada en todos los análisis. Por lo tanto, el objetivo de este estudio fue reconocer, desde la evidencia genética, la independencia taxonómica de las dos variedades de Pyrodinium: P. bahamense var. compressum y var. bahamense. Métodos: A partir de tres marcadores moleculares (Lcf, LSU, SSU) de secuencias disponibles en el Genbank, se construyeron redes de parsimonia estadística y un análisis filogenético concatenado. Resultados clave: En todos los análisis, se obtuvo de manera consistente una estructura genética para P. bahamense var. bahamense y otra para P. bahamense var. compressum. Además, la correspondencia de haplotipos y ribotipos resultantes fue siempre la misma, tanto en redes como en la filogenia; es decir, las muestras del Océano Pacífico siempre se colocaron en un grupo distinto al de las secuencias del Océano Atlántico. Conclusiones: La evidencia proporcionada en este estudio demostró que existe un aislamiento reproductivo entre ambas variedades, e incluso la posible presencia de una tercera variedad aún no descrita, por lo cual proponemos la validez e independencia taxonómica de P. bahamense var. compressum y P. bahamense var. bahamense. Instituto de Ecología, A.C. 2022-01-14 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares application/pdf text/xml application/epub+zip https://abm.ojs.inecol.mx/index.php/abm/article/view/1967 10.21829/abm129.2022.1967 Acta Botanica Mexicana; No. 129 (2022) Acta Botanica Mexicana; Núm. 129 (2022) 2448-7589 0187-7151 spa https://abm.ojs.inecol.mx/index.php/abm/article/view/1967/4095 https://abm.ojs.inecol.mx/index.php/abm/article/view/1967/4170 https://abm.ojs.inecol.mx/index.php/abm/article/view/1967/3975 https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | Zamudio Resendiz, María Eugenia Escarcega Bata, Alexis de Jesús Núñez Resendiz, María Luisa Meave del Castillo, María Esther Recognition of two taxonomic varieties of Pyrodinium bahamense (Gonyaulacales, Dinophyceae): var. bahamense y var. compressum |
| title | Recognition of two taxonomic varieties of Pyrodinium bahamense (Gonyaulacales, Dinophyceae): var. bahamense y var. compressum |
| title_full | Recognition of two taxonomic varieties of Pyrodinium bahamense (Gonyaulacales, Dinophyceae): var. bahamense y var. compressum |
| title_fullStr | Recognition of two taxonomic varieties of Pyrodinium bahamense (Gonyaulacales, Dinophyceae): var. bahamense y var. compressum |
| title_full_unstemmed | Recognition of two taxonomic varieties of Pyrodinium bahamense (Gonyaulacales, Dinophyceae): var. bahamense y var. compressum |
| title_short | Recognition of two taxonomic varieties of Pyrodinium bahamense (Gonyaulacales, Dinophyceae): var. bahamense y var. compressum |
| title_sort | recognition of two taxonomic varieties of pyrodinium bahamense (gonyaulacales, dinophyceae): var. bahamense y var. compressum |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/1967 |
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