Isolation of microsatellite loci from the scleractinian corals, Montastraea cavernosa and Porites astreoides

2004 ◽  
Vol 4 (3) ◽  
pp. 435-437 ◽  
Author(s):  
T. L. SHEARER ◽  
M. A. COFFROTH
Keyword(s):  
Microsatellite Loci ◽  
Scleractinian Corals ◽  
Porites Astreoides ◽  
Montastraea Cavernosa

scholarly journals ENSAMBLES DE MACROALGAS SOBRE SUPERFICIES MUERTAS DE CORALES ESCLERACTINIOS (ANTHOZOA: SCLERACTINIA) EN EL ARRECIFE ORO VERDE, VERACRUZ, MÉXICO

2017 ◽  
Vol 32 (1) ◽  
pp. 11
Author(s):  
IVONNE LUNA ORTEGA ◽  
VICENCIO DE LA CRUZ FRANCISCO
Keyword(s):  
Coral Species ◽  
Taxonomic Composition ◽  
Scleractinian Corals ◽  
Porites Astreoides ◽  
Orbicella Faveolata ◽  
Ordination Analysis ◽  
Species Similarity ◽  
Filamentous Macroalgae ◽  
Algal Assemblages ◽  
Montastraea Cavernosa

Las macroalgas son abundantes en el arrecife Oro Verde, Veracruz pero, hasta ahora, se desconocía su riqueza taxonómica, y se presume que presentan asentamientos en los corales escleractinios hermatípicos. Por ello el presente trabajo investigó qué especies de corales presentaron colonizaciones algales; además, se determinó la composición taxonómica y la similitud de los ensambles de macroalgas entre las especies de corales escleractinios. Se establecieron diez puntos de muestreo de manera sistemática en el arrecife; en cada lugar de estudio se colocó un transecto de banda de 50 x 2 m para localizar y recolectar macroalgas en superficies muertas de corales escleractinios. La frecuencia de aparición de las algas se estimó con base en el total de corales estudiados, así como para cada especie coral. Para explicar similitudes y diferencias significativas de la composición de ensamblajes macroalgales entre especies de corales se aplicaron análisis de similitud y ordenación. Los corales escleractinios con ensambles de algas fueron Siderastrea siderea, Montastraea cavernosa, Pseudodiploria strigosa, Colpophylia natans, Stephanocoenia intersepta, Porites astreoides, Orbicella annularis, Orbicella faveolata. De un total de 100 colonias coralinas revisadas se determinaron 32 especies de macroalgas, las cuales están representadas en tres divisiones, 10 órdenes y 15 familias. Las macroalgas corticadas, foliosas corticadas y filamentosas fueron las más representadas en especies. Las algas de mayor frecuencia sobre los corales masivos fueron Laurencia obtusa, Amphiroa rigida y Caulerpa chemnitzia. Los corales masivos con mayor número de registros de algas fueron S. siderea (9 especies), M. cavernosa (19) y P. strigosa (17). Los ensambles algales en los corales masivos presentaron baja similitud, sin embargo no se detectaron grupos significativamente disimiles. Solamente S. siderea y M. cavernosa son ligeramente parecidos en la composición ficológica. Los resultados sugieren que los corales masivos del arrecife Oro Verde son vulnerables a la colonización de algas, pero es necesario indagar qué condiciones preceden al asentamiento algal.Macroalgal assemblages on dead surfaces of scleractinian corals (Anthozoa: Scleractinia) in the Oro Verde reef, Veracruz, MexicoBenthic macroalgae are abundant in the Oro Verde reef but their taxonomic richness was hitherto unknown and it is presumed to present settlements on the massive corals. For this reason, the present work investigated which species of massive corals show algal colonization. Also, their taxonomic composition was determined, and the similarity of the algal assemblages between species of scleractinian corals was measured. Ten sampling points were systematically established in the reef, where a transect band of 50 x 2 m at each site was placed to locate and collect algae fron the dead surfaces of scleractinian corals. The frequency of occurrence of algae species was estimated based on the total number of coral species studied, as well as on each coral species. Similarity and ordination analysis were applied in order to explain similarities and significant differences of the phycological composition among the coral species. Scleractinian corals with algal assemblages were: Siderastrea siderea, Montastraea cavernosa, Pseudodiploria strigosa, Colpophylia natans, Stephanocoenia intersepta, Porites astreoides, Orbicella annularis, Orbicella faveolata. Thirty-two species of algae were identified from a total of 100 revised coral colonies which are represented in 3 divisions, 10 orders and 15 families. The corticated, foliose corticated and filamentous macroalgae were the most represented species. The most frequent algae on massive corals were Laurencia obtusa, Amphiroa rigida and Caulerpa chemnitzia. Massive corals with higher algal records were S. siderea (9 species), M. cavernosa (19 species) and P. strigosa (17 species). The algal assemblages on the massive corals presented low similarity. However, no significant dissimilar groups were detected. Only S. siderea and M. cavernosa are relatively similar in phycological composition. The results suggest that the massive corals of the Oro Verde reef are vulnerable to the colonization of algae, but it is necessary to investigate the conditions preceding algal settlement.

scholarly journals Coverage Increases of Porites astreoides in Grenada Determined by Shifts in Size-Frequency Distribution

Diversity ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 288
Author(s):  
Ryan G. Eagleson ◽  
John S. Lumsden ◽  
Lorenzo Álvarez-Filip ◽  
Christophe M. Herbinger ◽  
Ryan A. Horricks
Keyword(s):  
Coral Community ◽  
Scleractinian Corals ◽  
Area Measurement ◽  
Coralline Algae ◽  
Measurement Tool ◽  
Size Frequency Distribution ◽  
Point Count ◽  
Porites Astreoides ◽  
The Mean ◽  
The Caribbean

Despite coral community collapse, the mustard hill coral (Porites astreoides) is a species currently experiencing success throughout the Caribbean. The inshore reefs of Grenada were selected to study the influence of benthic factors on the abundance, size, and coverage of P. astreoides colonies. Surveys of reef communities along established 30 m transects were conducted at eight sites in 2014 and 2017 using a 0.5 m² quadrat. Coral Point Count was used to annotate the images, estimating the coverage of scleractinian corals, sponges, algae, and benthic substrates. Coverage, size, and abundance of P. astreoides colonies were quantified using the area measurement tool in ImageJ standardized against the quadrats. There were significant differences in benthic community assemblages between islands, selected sites, and between years. From 2014 to 2017 there was a significant decrease in the mean abundance of P. astreoides colonies and significant increases in mean colony size and coverage. The presence of P. astreoides colonies was significantly correlated with: rubble (−), sand (−); pavement (+); macroalgae (−); coralline algae (+); sponges (varying response); gorgonians (−); massive corals (+); and branching corals (−). P. astreoides follows similar recruitment patterns as other scleractinian corals. Observed changes in P. astreoides populations appear to indicate a recovery event following a disturbance, potentially tropical storm Chantal in 2013.

scholarly journals Symbiont Diversity of Zooxanthellae (Symbiodinium spp.) in Porites astreoides and Montastraea cavernosa from a Reciprocal Transplant in the Lower Florida Keys

2016 ◽  
Vol 8 (2) ◽  
pp. 9 ◽  
Author(s):  
Briana Hauff ◽  
Joshua A. Haslun ◽  
Kevin B. Strychar ◽  
Peggy H. Ostrom ◽  
James M. Cervino
Keyword(s):  
Coral Cover ◽  
Florida Keys ◽  
Reciprocal Transplant ◽  
Stress Regime ◽  
Porites Astreoides ◽  
Symbiotic Algae ◽  
The Face ◽  
Montastraea Cavernosa ◽  
Compositional Patterns ◽  
Offshore Reef

<p class="1Body">In recent years, coral reefs worldwide have suffered high mortality rates due to coral bleaching, a phenomenon contributing to a 40% decrease in coral cover in the Florida Keys since the 1997/98 El Niño event. In the Florida Keys, coral from inshore reefs are known to be more thermotolerant than their conspecifics from offshore reefs but the mechanism behind this difference is unclear. In this study we conducted a two-year, reciprocal transplant of <em>Porites astreoides</em> and <em>Montastraea cavernosa</em> from an inshore and offshore reef in the lower Florida Keys to determine if changes in the dominant symbiotic algae (<em>Symbiodinium </em>spp.) could explain variation in holobiont tolerance as well as to assess the possibility of acclimatization to a changing stress regime. Increased complexity and diversity was demonstrated in the composition of <em>Symbiodinium </em>spp. from both coral species collected at the offshore reef when compared to conspecifics collected inshore. As a result of this complexity, the offshore reef samples displayed higher numbers of transitions of zooxanthellae subclade types between seasons, while inshore fragments demonstrated more stability and may explain previously measured thermotolerance. Additionally, the known thermotolerant subclade type D1 was associated with one <em>M. cavernosa </em>fragment from the inshore reef. When fragments were transplanted, compositional patterns of <em>Symbiodinium </em>spp. were retained from site of collection, indicating a lack of acclimatization to a new environment over the lengthy two-year experiment. These results demonstrate variability in the dominant <em>Symbiodinium</em> spp. of <em>P. astreoides </em>and <em>M. cavernosa</em> conspecifics from inshore and offshore reefs in the lower Florida Keys and point to possible patterns in holobiont thermotolerance. This variability may be key to the continued persistence of these species in the face of climate change, but future studies are needed to determine the mechanisms and range in which these subclade types withstand thermal stress.</p>

scholarly journals Branqueamento de corais nos recifes da Bahia e sua relação com eventos de anomalias térmicas nas águas superficiais do oceano

2008 ◽  
Vol 8 (3) ◽  
pp. 69-82 ◽  
Author(s):  
Zelinda Margarida Andrade Nery Leão ◽  
Ruy Kenji Papa de Kikuchi ◽  
Marília de Dirceu Machado de Oliveira
Keyword(s):  
Porites Astreoides ◽  
Montastraea Cavernosa

A partir de 1993 foram registrados vários eventos de branqueamento de coral na Bahia, com recuperação total dos corais afetados. O primeiro registro ocorreu em Abrolhos no verão de 1993/1994, quando o percentual de colônias branqueadas variou entre 50 e 90%. No verão de 1997/1998, ocorreu no Litoral Norte da Bahia uma anomalia térmica de 1 ºC, com temperaturas medidas no campo de 29 a 30,5 ºC, o que causou branqueamento em 60% dos corais. De 1998 a 2005, foi observado que nos recifes costeiros, localizados muito próximos (<5km) ou adjacentes à costa, a permanência de anomalias térmicas de 0,25 ºC por mais de duas semanas causou branqueamento em mais de 10% dos corais. Porém para os recifes de Abrolhos, localizados a mais de 10 km da costa, apenas anomalias acima de 0,50 ºC com duração de mais de duas semanas causaram branqueamento em mais de 10% dos corais. Mussismilia hispida, Siderastrea spp., Montastraea cavernosa, Agaricia agaricites e Porites astreoides foram as espécies de coral mais afetadas pelo branqueamento e são as espécies mais freqüentes nos recifes costeiros. Todas as espécies apresentaram graus diferentes de branqueamento, "fraco" ou "forte". Nos recifes da Bahia há uma forte relação entre o branqueamento de corais e os eventos de anomalias da temperatura da superfície do mar (TSM), e os recifes mais afetados pelo branqueamento foram os recifes costeiros. Estes recifes localizados muito próximos da costa estão mais expostos aos efeitos dos impactos provenientes de processos que ocorrem na região costeira, sugerindo que, muito provavelmente, os corais mais expostos a níveis elevados de nutriente e sedimento, e variações sazonais mais altas da TSM, podem já estarem mais resistentes aos efeitos pós branqueamento como, por exemplo, doenças infecciosas e mortalidade em massa.

scholarly journals MORTALIDAD DE CORALES ESCLERACTÍNIOS JUVENILES EN EL ARCHIPIÉLAGO NUESTRA SEÑORA DEL ROSARIO, CARIBE COLOMBIANO

2016 ◽  
Vol 40 (2) ◽  
Author(s):  
Tomás López Londoño ◽  
Raúl Navas Camacho ◽  
Diego L. Gil Agudelo
Keyword(s):  
Porites Astreoides ◽  
Montastraea Cavernosa

En la estación de monitoreo de arrecifes coralinos del SIMAC en isla Tesoro, archipiélago Nuestra Señora del Rosario, se evaluó la mortalidad y se identifiaron algunos signos de deterioro en corales escleractínios juveniles (colonias < 2-4 cm). Se marcaron y evaluaron 41 colonias por un período de seis meses (abril-octubre de 2006), de las cuales 31 pertenecieron a especies incubadoras de plánulas (con dominancia de Porites astreoides y Agaricia spp.) y 10 a especies liberadoras de gametos (con mayor abundancia de Montastraea cavernosa). La tasa de mortalidad encontrada (0.1) fue baja comparada con otras registradas, condición posiblemente relacionada con una presión moderada de los tensores presentes en el área durante la época del estudio. La abundancia de corales juveniles en los diferentes taxones y los signos de deterioro registrados son refljo de las estrategias de vida, en las que especies incubadoras de plánulas son usualmente más abundantes y vulnerables.

scholarly journals ESPONJAS Y CNIDARIOS (HYDROZOA Y ANTHOZOA) DEL ARRECIFE ORO VERDE; COBERTURA BENTÓNICA Y AFINIDAD FAUNÍSTICA CON SISTEMAS ARRECIFALES DE VERACRUZ, MÉXICO

2016 ◽  
Vol 31 (2) ◽  
pp. 45 ◽  
Author(s):  
VICENCIO DE LA CRUZ FRANCISCO ◽  
Ángel Eduardo Bandala-Pérez
Keyword(s):  
Species Richness ◽  
Multidimensional Scaling ◽  
Common Species ◽  
The Other ◽  
Porites Astreoides ◽  
Reef Corals ◽  
Southern Central ◽  
Montastraea Cavernosa ◽  
Low Coverage ◽  
Submerged Reefs

RESUMEN. Durante el periodo junio-agosto de 2015, se realizaron muestreos en 12 puntos geográficos del arrecife Oro Verde para explorar las porciones norte, sur, centro, este y oeste, con la finalidad de registrar especies de esponjas, hidrocorales y antozoos, así como para estimar la cobertura de algas, esponjas, corales, gorgonias y de componentes abióticos (e. g., arena y pavimento) mediante fototransectos de 50 m de longitud. Con esta información se realizaron análisis de escalamiento multidimensional no métrico (NMDS) para explicar similitudes de las unidades de muestreo. Además, se comparó la composición de esponjas y corales del arrecife Oro Verde con los demás sistemas arrecifales de Veracruz a fin de determinar afinidades mediante el método NMDS; para explicar diferencias significativas entre grupos disimiles se utilizó la prueba de similitud ANOSIM. Se registraron un total de 37 especies del Phylum Porifera y 29 especies del Phylum Cnidaria. Las especies con mayor frecuencia en el arrecife fueron las esponjas Callyspongia armigera, Niphates erecta y Amphimedon compressa, y los corales Montastraea cavernosa, Porites astreoides, Siderastrea sidérea y Colpophyllia natans. En cuanto a cobertura, las algas filamentosas y frondosas fueron las más abundantes (49.4±7.7% y 20±9.7%, respectivamente); con respecto a los corales que presentaron baja cobertura (9.5±6.1%), se identificaron principalmente M. cavernosa, C. natans y S. siderea. La riqueza faunística y la cobertura bentónica se distribuyen de manera homogénea en el arrecife, dado que los lugares de muestreo manifestaron semejanzas en estos atributos comunitarios. La composición de esponjas del arrecife Oro Verde presentó mayor afinidad con los arrecifes aledaños y con los arrecifes sumergidos del sur de Veracruz; en cambio, en cuanto a la riqueza de corales, el arrecife Oro Verde es más semejante con los arrecifes colindantes. Las discrepancias con los demás arrecifes se atribuyen a la falta de inventarios completos (e. g., Tuxpan) y/o por presentar especies con limitada distribución.Sponges and cnidarians (Hydrozoa and Anthozoa) from Oro Verde reef; benthic coverage and faunal affinity with the reef systems of Veracruz, MexicoABSTRACT. Sampling was conducted in twelve geographical points of the Oro Verde reef during the June-August 2015 period, in-order-to record species of sponges, hydrocorals and anthozoans, and to estimate the coverage of algae, sponges, corals, sea fans and abiotic components (e.g., sand and pavement) using 50 m long photo transects. We explored the northern, southern, central, eastern and western section of the reef. Analysis of non-metric multidimensional scaling (NMDS) was performed to explain similarities of the sampling units based on the information obtained. In addition, the composition of sponges and coral reefs from Oro Verde reef was compared with the other reef systems of Veracruz to determine affinities using the NMDS method. The similarity test ANOSIM was used to explain significant differences among dissimilar groups. A total of 37 species of Phylum Porifera and 29 species of Phylum Cnidaria were recorded. The most common species in the reef were the sponges Callyspongia armigera, Niphates erecta, and Amphimedon compressa, and the corals Montastraea cavernosa, Porites astreoides, Siderastrea siderea, Colpophyllia natans. Filamentous and frondose algae were the most abundant in coverage (49.4 ± 7.7% and 20 ± 9.7%, respectively), compared to reef corals that showed low coverage (9.5 ± 6.1%), which consisted mainly of M. cavernosa, C. natans and S. siderea. The faunal richness and the benthic coverage are distributed in a homogeneous way in the reef as sampling sites revealed similarities in these community attributes. The composition of sponges from Oro Verde reef presented higher affinity with the adjacent reefs and with the submerged reefs of southern of Veracruz. However, Oro Verde reef is more similar with neighboring reefs in species richness of corals. Discrepancies with the other reefs are attributed to the lack of complete inventories (e. g., Tuxpan) and / or by presenting species with limited distribution. 

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