Stony corals (Scleractinia) from the Marías Islands, Mexican Pacific

Recent studies performed off the Pacific coast of Mexico have shown a large number of reefs or coral patches in the region, but information is still lacking for some areas. One of these is the Marías Archipelago (21°N), composed of four islands: María Madre, María Magdalena, María Cleofas and San Ju...

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Main Authors:	Pérez-Vivar, TL, Reyes-Bonilla, H, Padilla, C
Format:	info:eu-repo/semantics/article
Language:	eng
Published:	Iniversidad Autónoma de Baja California 2006
Subjects:	Marías Islands Scleractinia Mexican Pacific coral reefs biogeography Islas Marías Pacífico mexicano arrecifes coralinos biogeografía
Online Access:	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1063
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id	repositorioinstitucional-20.500.12930-7402
record_format	dspace
institution	Repositorio Institucional
collection	DSpace
language	eng
topic	Marías Islands Scleractinia Mexican Pacific coral reefs biogeography Islas Marías Scleractinia Pacífico mexicano arrecifes coralinos biogeografía
spellingShingle	Marías Islands Scleractinia Mexican Pacific coral reefs biogeography Islas Marías Scleractinia Pacífico mexicano arrecifes coralinos biogeografía Pérez-Vivar, TL Reyes-Bonilla, H Padilla, C Stony corals (Scleractinia) from the Marías Islands, Mexican Pacific
description	Recent studies performed off the Pacific coast of Mexico have shown a large number of reefs or coral patches in the region, but information is still lacking for some areas. One of these is the Marías Archipelago (21°N), composed of four islands: María Madre, María Magdalena, María Cleofas and San Juanito. The objective of this paper was to make a general evaluation of the status of the corales in the archipelago by revising the systematic list of species and analyzing the community structure and biogeographic patterns of the fauna. Twenty-one locations at María Madre Island and two at San Juanito Island were visited in August 1997, and at each we conducted a video transect (150 m long) to describe zonation and a line transect (20 m long) for quantitative analyses. This information was complemented with literature reviews and data from specimens deposited in museums in Mexico and the United States. After obtaining the systematic list of corals from the islands, we compared the level of similarity of the fauna with that from five nearby regions (including the Revillagigedo Islands and the mainland from 23ºN to 18ºN), and ordination analyses were run. In the field we observed 13 species of stony corals (including eight new records), but did not find Porites baueri, a nominally endemic species from the Marías Islands. The museum revisions produced two new records. Thus, analyzing the full data set, 20 species are considered residents of the study area. There were no constructional reefs in the archipelago, but coral abundance was high, especially at María Madre Island. The communities showed a clear zonation, with Pocillopora in shallow water and Porites, Pavona and Psammocora in deeper localities. Finally, the biogeographic analysis indicated that the mouth of the Gulf of California represents a key area for species immigration from the western Pacific, and that the Marías Islands seem to act as a nodal point for coral dispersal to the north.
format	info:eu-repo/semantics/article
author	Pérez-Vivar, TL Reyes-Bonilla, H Padilla, C
author_facet	Pérez-Vivar, TL Reyes-Bonilla, H Padilla, C
author_sort	Pérez-Vivar, TL
title	Stony corals (Scleractinia) from the Marías Islands, Mexican Pacific
title_short	Stony corals (Scleractinia) from the Marías Islands, Mexican Pacific
title_full	Stony corals (Scleractinia) from the Marías Islands, Mexican Pacific
title_fullStr	Stony corals (Scleractinia) from the Marías Islands, Mexican Pacific
title_full_unstemmed	Stony corals (Scleractinia) from the Marías Islands, Mexican Pacific
title_sort	stony corals (scleractinia) from the marías islands, mexican pacific
publisher	Iniversidad Autónoma de Baja California
publishDate	2006
url	https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1063
_version_	1792610585625493504
spelling	repositorioinstitucional-20.500.12930-74022023-05-09T14:30:58Z Stony corals (Scleractinia) from the Marías Islands, Mexican Pacific Corales pétreos (Scleractinia) de las Islas Marías, Pacífico de México Pérez-Vivar, TL Reyes-Bonilla, H Padilla, C Marías Islands Scleractinia Mexican Pacific coral reefs biogeography Islas Marías Scleractinia Pacífico mexicano arrecifes coralinos biogeografía Recent studies performed off the Pacific coast of Mexico have shown a large number of reefs or coral patches in the region, but information is still lacking for some areas. One of these is the Marías Archipelago (21°N), composed of four islands: María Madre, María Magdalena, María Cleofas and San Juanito. The objective of this paper was to make a general evaluation of the status of the corales in the archipelago by revising the systematic list of species and analyzing the community structure and biogeographic patterns of the fauna. Twenty-one locations at María Madre Island and two at San Juanito Island were visited in August 1997, and at each we conducted a video transect (150 m long) to describe zonation and a line transect (20 m long) for quantitative analyses. This information was complemented with literature reviews and data from specimens deposited in museums in Mexico and the United States. After obtaining the systematic list of corals from the islands, we compared the level of similarity of the fauna with that from five nearby regions (including the Revillagigedo Islands and the mainland from 23ºN to 18ºN), and ordination analyses were run. In the field we observed 13 species of stony corals (including eight new records), but did not find Porites baueri, a nominally endemic species from the Marías Islands. The museum revisions produced two new records. Thus, analyzing the full data set, 20 species are considered residents of the study area. There were no constructional reefs in the archipelago, but coral abundance was high, especially at María Madre Island. The communities showed a clear zonation, with Pocillopora in shallow water and Porites, Pavona and Psammocora in deeper localities. Finally, the biogeographic analysis indicated that the mouth of the Gulf of California represents a key area for species immigration from the western Pacific, and that the Marías Islands seem to act as a nodal point for coral dispersal to the north. Estudios recientes llevados a cabo en la costa occidental de México han dado a conocer un gran número de arrecifes o parches coralinos en la región, pero aún hay áreas poco conocidas. Una de ellas es el Archipiélago de las Islas Marías (21ºN), formado por cuatro islas: María Madre, María Magdalena, María Cleofas y San Juanito. El objetivo de este trabajo fue llevar a cabo una evaluación general de la situación de los corales del archipiélago por medio de la revisión del elenco sistemático de las especies, y del análisis de la estructura comunitaria y los patrones biogeográficos de la fauna. En agosto de 1997 se visitaron 21 sitios en la Isla María Madre y 2 en San Juanito, y en cada uno se realizó un transecto de video (150 m de largo) para denotar la zonación coralina y uno de línea (20 m de largo) para hacer análisis cuantitativos. Esa información fue complementada con revisiones de literatura y datos de ejemplares de museos de México y Estados Unidos. Una vez obtenido el elenco sistemático de corales de las islas, se calculó el nivel de similitud de la fauna con el de cinco regiones cercanas (incluyendo las Islas Revillagigedo y el margen continental entre 23ºN y 18ºN), y se condujeron análisis de ordenación. En el campo se observaron 13 especies de corales pétreos (incluyendo ocho nuevos registros), pero no se encontró a Porites baueri, especie nominalmente endémica de las Islas Marías. Las revisiones de museos arrojaron dos nuevos registros. Así, sumando la información se conocen 20 especies como residentes de la zona de estudio. En el archipiélago no se vieron arrecifes en sentido construccional pero había gran abundancia de coral, especialmente en la Isla María Madre. Las comunidades mostraban una clara zonación con Pocillopora en agua somera y Porites, Pavona y Psammocora en sitios profundos. Finalmente, el análisis biogeográfico indicó que la boca del Golfo de California representa una región clave para la inmigración de especies desde el Pacífico occidental, y las Islas Marías parecen jugar un punto nodal para la dispersión coralina hacia el norte. 2006-06-23 2021-06-03T03:55:11Z 2021-06-03T03:55:11Z info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1063 10.7773/cm.v32i21.1063 https://hdl.handle.net/20.500.12930/7402 eng https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1063/947 application/pdf Iniversidad Autónoma de Baja California Ciencias Marinas; Vol. 32 No. 2 (2006); 259-270 Ciencias Marinas; Vol. 32 Núm. 2 (2006); 259-270 2395-9053 0185-3880

Stony corals (Scleractinia) from the Marías Islands, Mexican Pacific

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