Rafael Flores‐Garza

Universidad Autónoma de Guerrero

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Sergio García‐Ibáñez

Universidad Autónoma de Guerrero

Pedro Flores‐Rodríguez

Universidad Autónoma de Guerrero

Carmina Torreblanca-Ramírez

Universidad Autónoma de Guerrero

Lizeth Galeana-Rebolledo

Universidad Autónoma de Guerrero

Arcadio Valdés-González

Universidad Autónoma de Nuevo León

‪I

‪Víctor Ignacio López-Rojas

Universidad Autónoma de Guerrero

Jesús Emilio Michel‐Morfín

Universidad de Guadalajara

Arcadio Valdés González

Universidad Autónoma de Nuevo León

José Luís Rosas-Acevedo

Universidad Autónoma de Guerrero

Juan Violante‐González

Universidad Autónoma de Guerrero

Cooperative Institutions

Universidad Autónoma de Guerrero

Universidad Nacional Autónoma de México

Universidad de Guadalajara

Universidad Autónoma de Nuevo León

University of Arizona

Secretariat of Agriculture, Livestock, Rural Development, Fisheries and Food

Tecnológico de Monterrey

Centro de Investigación y Proyectos en Ambiente y Desarrollo

Universidad Autónoma del Noreste

Universidad de Sonora

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Riqueza, composición de la comunidad y similitud de las especies bentónicas de la Subclase Opisthobranchia (Mollusca: Gastropoda) en cinco sitios del litoral de Acapulco, México

Revista de biología marina y oceanografía (2017)

Pedro Flores‐Rodríguez Rafael Flores‐Garza Sergio García‐Ibáñez Arcadio Valdés González Berenice Grisel Martínez Vásquez

Se estudió la Subclase Opisthobranchia en Acapulco. Los objetivos fueron conocer la riqueza de especies, la composición de la comunidad a partir de las abundancias, disposición espacial local y la ubicación jerárquica de las especies, además comparar la similitud entre sitios. Se muestreó de 2009 a 2012 en 5 sitios, durante el día, en marea baja, bimensualmente. En la zona intermareal rocosa se hicieron muestreos siguiendo la línea de costa y en el submareal se efectuaron inmersiones hasta 4 m por buceo libre. Se identificaron 59 especies, 5 más identificadas hasta género. Son nuevos registros de distribución para Acapulco 28 especies. El Orden Nudibranchia fue el de mayor cantidad de familias, riqueza de especies y abundancia. La mayor riqueza de especies se encontró en la familia Dorididae y la mayor abundancia en la familia Facelinidae. Las especies más abundantes fueron Phidiana lascrucensis, Elysia diomedea, Pleurobranchus aerolatus, Glossodoris sedna y Polycera alabe. El 24,44% de las especies presentó disposición espacial local ampliada, el 32,8% disposición semirestringida y el 43,75% restringida. Se encontró que 19 especies fueron dominantes y representaron el 28,78%. Se halló la mayor similitud en abundancia en los sitios Tlacopanocha y Parque de la Reina, que presentan características de intensidad de oleaje bajo y sustratos muy heterogéneos. La riqueza de especies encontrada es de las más altas reportada para el Pacífico Americano. Se amplía considerablemente el listado de especies conocidas para Acapulco y se contribuye al conocimiento de la composición de la comunidad de la Subclase Opisthobranchia.

Rocky shore

Opisthobranchia

10.4067/s0718-19572017000100005

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Citations (1)

New Records for GASTROPODA Class of Species Found in the Rocky Intertidal Zone of the Marine Priority Region 32, Guerrero, Mexico

Open Journal of Marine Science (2014)

Carmina Torreblanca-Ramírez Rafael Flores‐Garza Jesús Emilio Michel‐Morfín José Luís Rosas-Acevedo Pedro Flores‐Rodríguez

The GASTROPODA class, one of the best known marine environments, is formed by a large number of species and the shape of their shell structure varies greatly.These mollusks are distributed from the intertidal zone all the way to the abyssal zone, and there are also swimming and floating species.This research was conducted at seven sites, located in the Marina Priority Region 32 (MPR 32), located in the State of Guerrero, Mexico.The aim of this report is to document the scope of the geographic distribution of the 34 species of GASTROPODA class.11,263 total specimens were analyzed.108 species were identified, of which four species are new records for Mexico, 15 for the Transitional Mexican Pacific, 11 for the State of Guerrero and four for the MPR 32.Here we report a significant number of new records of species of class GASTROPODA found on the rocky intertidal zone of the MPR 32.The reporting of these new records, demonstrates the need to focus research efforts on the study of marine diversity, since knowledge in this respect is quite incomplete, especially regarding marine mollusks, a fact that has been reported by the National Commission for the Management and Use of Biodiversity.

Global biodiversity

Marine protected area

10.4236/ojms.2014.43021

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Spatial pattern of Plicopurpura patula pansa,in rocky shores of Guerrero, México

Revista Mexicana de Biodiversidad (2007)

Sergio García‐Ibáñez Pedro Flores‐Rodríguez Rafael Flores‐Garza Arcadio Valdés-González

Rocky shore

Pinus patula

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Bioavailability, risk assessment, and source traceability of potentially toxic elements in bivalve species widely consumed in the emblematic Acapulco Bay, Mexico

Applied Geochemistry (2024)

José Eduardo Chong-López Sergio Adrián Salgado-Souto Rafael Del Río-Salas Óscar Talavera-Mendoza Alicia Sarmiento-Villagrana

Traceability

10.1016/j.apgeochem.2024.106014

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Citations (3)

Mollusks of the Rocky Intertidal Zone at Three Sites in Oaxaca, Mexico

Open Journal of Marine Science (2014)

Pedro Flores‐Rodríguez Rafael Flores‐Garza Sergio García‐Ibáñez Carmina Torreblanca-Ramírez Lizeth Galeana-Rebolledo

The community of mollusks at three rocky intertidal zone in Oaxaca, Mexico was analyzed.Two samplings per site were conducted.At each sampling the inspected area was 10 m 2 .The sampling unit was 1 m 2 .5862 specimens were examined.68 mollusks species were identified.The families better represented in species richness were: FISSURELLIDAE, MURICIDAE, LOTIIDAE, MYTILIDAE, CHAMIDAE, ISCHNOCHITONIDAE y CHITONIDAE.The species that had the greatest density were Lottia discors, Siphonaria palmata, Lottia acutapex, Chormoytilus palliopunctatus, Brachidontes adamsianus, Chton articulatus e Ischnochiton muscarius.The species with the widest distribution represent 11.76%.With irregular distribution was found in 58.82% of the species.The gastropod Crucibulummonticulus, the bivalve C. palliopunctatus and the polyplacophoran C. articulatus had the greatest size.The value of diversity index was H' = 4.29 bits/ind.and J' = 0.72.The mollusks community in the rocky intertidal zone study sites is characterized by small size, because they rarely exceed seventy millimeters.The values of H' and J' indicate that the mollusk community in the study area has a high diversity and high uniformity, corresponding to mature and stable communities in a tropical region.

Rocky shore

Intertidal ecology

10.4236/ojms.2014.44029

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Polyplacophora species richness, composition and distribution of its community associated with the intertidal rocky substrate in the marine priority region No. 32 in Guerrero, Mexico

Open Journal of Ecology (2012)

Rafael Flores‐Garza Lizeth Galeana-Rebolledo Sergio García‐Ibáñez Carmina Torreblanca-Ramírez

The coast of Acapulco is located within the Marine Priority Region No. 32 (MPR No. 32) at the State of Guerrero, Mexico. The National Commission for the Knowledge and Use of Biodiversity has stated the lack of information on marine species that live there, among which are the Class Polyplacophora. This study aimed to: 1) determine species richness, 2) the community structure based on the representative families, 3) estimate the density, 4) locate species distribution, 5) determine their degree of occurrence (hierarchical position) within the community, 6) analyze the structure of length and width across the populations and 7) estimate the diversity index. The intertidal rocky substrate at seven beaches was sampled from 2009 to 2012. The sampling unit 1 m2, while the area sampled was 10 m2. It was analyzed 2.548 specimens of Polyplacophora, with 20 species identified. Tonicellidae and Ischnochitonidae were the Families better represented inspecies richness and Chitonidae in abundance. Lepidochitona flectens is a new record for the Mexican Tropical Pacific and Stenoplax mariposa for MPR. No. 32. The density was 25.48 specimens/m2. Eight dominant species were determined. Chiton albolineatus had the highest density. Ischnochiton muscarius, Chaetopleura unilineata, Chiton albolineatus and Chiton articulatus presented wide distribution. Chiton articulatus showed the largest size in length and width. H’ = 2.01 bits/ individual. Numerous dominant species were present with broad and regular distribution, probably due to Polyplacophora body design, which allows for better adaptation to the rigorous environmental conditions of the rocky intertidal.

Polyplacophora

10.4236/oje.2012.24023

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Citations (18)

Densidad y tallas de Plicopurpura patula pansa relacionadas con el sustrato y oleaje en la costa rocosa de Guerrero, México

Hidrobiológica (2004)

Sergio García‐Ibáñez Rafael Flores‐Garza Pedro Flores‐Rodríguez Arcadio Valdés-González

The relationship was analyzed between the density and sizes average of the snail Plicopurpura patula pansa with the shock wave and substratum type in nine rocky beaches of Guerrero State, Mexico. The relative density was 4.7 snails/m2 and the size average 21.7 mm. The correlation between density and sizes average it was negative. The one-way analysis of variance found significant differences in the sizes average of the snail among the study places. The multiple comparisons established three groups that were integrated for beaches that presented similarity in certain characteristics of the substratum and shock wave action. A hierarchical analysis formed eight groups. The most similar groups were integrated by beaches that presented similar characteristics in the substratum type, but not in shock wave action. The density obtained by this study is the biggest to those registered in other States of the Mexican Pacific. The substratum type presented the greater association with densities and sizes average of P. p pansa.

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Intertidal chitons (Mollusca: Polyplacophora) from the rocky coastline of Guerrero, México, with the description of a new species

Zootaxa (2022)

Adriana Reyes-Gómez Rafael Flores‐Garza Lizeth Galeana-Rebolledo Gerardo Hernández‐Vera Cristian Moisés Galván‐Villa

Chitons from southern México have been poorly documented hitherto and little is known about the species present in this region. Here we report 12 intertidal to shallow subtidal species in six families and nine genera. Chiton articulatus, Chiton albolineatus, and Ischnochiton muscarius were numerically the most common species, accounting for 29%, 27%, and 26% of individuals found, followed by Chaetopleura lurida (7%) and Stenoplax limaciformis (3%). The remainder of the species obtained were present with between 0.5 and 2% of the total sample. Eight species are distributed along the Tropical Eastern Pacific, and four species (I. muscarius, C. albolineatus, C. articulatus, and Lepidochitona acapulcoensis sp. nov.) are endemic to the Mexican subprovince, distributed from Mazatlán to Oaxaca. A morphological comparison of Guerrero chitons with those from several points along the Mexican Tropical Pacific and La Paz Baja California Sur, revealed important variations. Specimens of Chaetopleura lurida from Guerrero contrasts in the valve sculpturing density and arrangement when compared to those from Mazatlán and Oaxaca. Callistochiton elenensis from Guerrero exhibits fewer ribs on the head valve and postmucronal area of the tail valve than specimens from La Paz, Baja California Sur. Color pattern differences were identified for Mazatlán and Oaxaca specimens of I. muscarius, C. articulatus, and C. albolineatus. Details are presented for the valve tegmentum, girdle elements, and radula for each species. In addition, we herein describe Lepidochitona acapulcoensis sp. nov. as a new species using barcode (cox1) and morphological data.

Polyplacophora

Rocky shore

Tropical Eastern Pacific

10.11646/zootaxa.5155.4.1

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Citations (7)

Mollusc community from a rocky intertidal zone in Acapulco, Mexico

Biodiversity (2011)

Rafael Flores‐Garza Carmina Torreblanca-Ramírez Pedro Flores‐Rodríguez Sergio García‐Ibáñez Lizeth Galeana-Rebolledo

The state of Guerrero, Mexico, has approximately 470 km of seashore but the marine fauna is not well known. The coastline has three marine areas for priority conservation of coastal and oceanic biodiversity, for which Comisión Nacional para la Conservación y Uso de la Biodiversidad (CONABIO) notes a distinct lack of knowledge in these areas. This study was carried out in a rocky intertidal middle zone from Playa ‘Majahua’, Acapulco, located south of Bahia de Puerto Marques. The objectives were to study: the species richness for classes Gastropoda, Bivalvia and Polyplacophora; the community structure from the representation of classes, families and genera; estimate density and species composition within a community; analyse size and structure of populations in the mollusc community; and estimate the diversity index. Three samplings were made in the intertidal middle zone in 2009. Ten square metres were sampled at each visit. Ninety-nine mollusc species were found to be represented, corresponding to 36 families. From all of these species, no record in Acapulco was found for 21 Gastropoda, 5 Bivalvia and 8 Polyplacophora species recorded. Gastropoda was the best represented; 1737 organisms were analysed with an estimated density of 86.8 organisms/m2 and 31 species were dominant. Crucibullum umbrella was the largest sized species. The diversity and equity index estimate in Majahua was the highest found for the rocky coast of Guerrero, indicating a mega-diverse area with great uniformity.

Rocky shore

Polyplacophora

Global biodiversity

10.1080/14888386.2011.625520

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Citations (26)

Diversity, Distribution and Composition of the Bivalvia Class on the Rocky Intertidal Zone of Marine Priority Region 32, Mexico

Open Journal of Ecology (2014)

Rafael Flores‐Garza ‪Víctor Ignacio López-Rojas Pedro Flores‐Rodríguez Carmina Torreblanca-Ramírez

The Bivalvia Class, is widely represented in marine ecosystems and is economically important; this research focused on this class and was carried out by sampling the rocky intertidal zone of seven sites located in the Marina Region Priority No. 32, Guerrero, Mexico, where the National Commission for the Knowledge and Use of Biodiversity reported lack of knowledge on marine species living there. The objectives were to examine species richness associated with the rocky intertidal zone, determine how the community is composed by the representation of families based on species richness and abundance, know the distribution of the species, analyze the structure sizes of populations and estimate the diversity index. Sampling was conducted at seven sites; the sampling unit was one square meter and the sampling area was 10 m2. 32 species were identified. Four species are new records for the Mexican Pacific Transitional: one for the state of Guerrero and one for Marine Priority Region 32. Arcidae and Mytilidae Families were better represented in species richness and Chamidae Family was the best represented in abundance. Chama coralloides was considered to be the representative species of the area; Striostrea prismatica showed the greatest size. The diversity index was estimated (H' = 3.65 bits/individuals). Species richness is high and corresponds to that expected in a tropical area.

Mytilidae

Diversity index

Global biodiversity

10.4236/oje.2014.415080

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Citations (15)