Variación en la densidad de células y en la concentración de pigmentos en dinoflagelados simbióticos de tres corales escleractinios en el Caribe colombiano
| dc.contributor.advisor | Zea, Sven | |
| dc.contributor.advisor | Sanjuan Muñoz, Adolfo | |
| dc.contributor.advisor | Gómez Cubillos, Martha Catalina | |
| dc.creator | Rodríguez Mojica, María Camila | |
| dc.date.accessioned | 2025-06-04T20:10:23Z | |
| dc.date.available | 2025-06-04T20:10:23Z | |
| dc.date.created | 2025-06-04 | |
| dc.description.abstract | Conocer el estado de los simbiontes fotosintéticos de corales arrecifales puede reflejar la salud de la colonia coralina hospedera. En este estudio se analizó la variación de la densidad celular y la concentración de clorofila (Chl-a y Chl-c2) en tres especies de corales del Caribe colombiano (Montastraea cavernosa-MCAV, Pseudodiploria strigosa-PSTR y Siderastrea siderea-SSID), considerando dos arrecifes (ensenada Granate y bahía Chengue) y dos condiciones coloniales (sana, colonia completa-C y con interacción residual con céspedes, núcleo-N). Se estandarizó una técnica para la extracción de tejido en corales duros y se aplicó una metodología análoga con dos tratamientos de extracción (T1–Acetona 90 % y T2–Acetona 90 % + 0.05 MgCO3) para obtener los valores de clorofila. Entre especies, se presentaron diferencias significativas en la densidad celular entre MCAV–SSID (p = 3.4×10⁻⁵) y entre PSTR–SSID (p = 3.4×10⁻⁵); pero no entre arrecifes ni condición de la colonia. En la concentración de pigmentos, se registraron diferencias significativas para MCAV–SSID entre los tratamientos de extracción T1: Chl-a (p = 0.0003) – Chl- c2 (p = 2.0×10^(4)) y T2: Chl-a (p = 0.008) – Chl-c2 (p = 0.017). Entre las condiciones coloniales, MCAV registró diferencias significativas para Chl- c2 (p = 0.043) y PSTR para Chl-a (p = 0.035) y Chl- c2 (p = 0.001); mientras que SSID arrojó diferencias entre arrecifes para Chl-a (p = 0.047) y Chl- c2 (p = 0.001). Estos resultados indican que las especies responden de manera diferencial al estrés ambiental y subrayan la necesidad de estudios a largo plazo en las regiones de interés. | spa |
| dc.description.abstractenglish | Knowing the status of reef coral photosynthetic symbionts can reflect the health of the host coral colony. In this study, the cellular density and chlorophyll concentration (Chl-a and Chl-c2) were analyzed in three coral species from the Colombian Caribbean (Montastraea cavernosa-MCAV, Pseudodiploria strigosa-PSTR, and Siderastrea siderea-SSID), considering two reefs (ensenada Granate and bahía Chengue) and two colony conditions (healthy, complete colony – C, and with residual interaction with algal turfs – N). A tissue extraction technique in hard corals was standardized, and an analogous methodology was applied with two extraction treatments (T1 – 90 % Acetone and T2 – 90 % Acetone + 0.05 MgCO3) to determine chlorophyll values. Among species, significant differences in cell density were found between MCAV–SSID (p = 3.4×10⁻⁵) and between PSTR–SSID (p = 3.4×10⁻⁵); however, no differences were observed between reefs or colony conditions. For pigment concentrations, there were significant differences between MCAV and SSID in extraction treatments T1: Chl-a (p = 0.0003)–Chl- c2 (p = 2.0×10^(4)) y T2: Chl-a (p = 0.008)–Chl-c2 (p = 0.017). Among colony conditions, MCAV showed significant differences for Chl-c2 (p = 0.043), and PSTR for Chl-a (p = 0.0349) and Chl-c2 (p= 0.0012); whereas SSID presented differences between reefs for Chl-a (p = 0.0476) and Chl-c2 (p =0.0238). These results indicate that coral species respond differently to environmental stress and emphasize the need for long-term studies in regions of interest. | spa |
| dc.format.extent | 41 páginas | spa |
| dc.format.mimetype | application/pdf | spa |
| dc.identifier.uri | https://hdl.handle.net/20.500.12010/36747 | |
| dc.language.iso | spa | spa |
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| dc.subject | Montastraea cavernosa | spa |
| dc.subject | Pseudodiploria strigosa | spa |
| dc.subject | Siderastrea siderea | spa |
| dc.subject | clorofila a-c2 | spa |
| dc.subject | zooxantelas | spa |
| dc.subject | Tayrona | spa |
| dc.subject.keyword | Montastraea cavernosa | spa |
| dc.subject.keyword | Pseudodiploria strigosa | spa |
| dc.subject.keyword | Siderastrea siderea | spa |
| dc.subject.keyword | chlorophyll a-c2 | spa |
| dc.subject.keyword | zooxanthellae | spa |
| dc.subject.keyword | Tayrona | spa |
| dc.subject.lemb | Corales - Fisiología - Caribe (Región) | |
| dc.subject.lemb | Simbiosis - Aspectos ecológicos | |
| dc.subject.lemb | Pigmentos fotosintéticos - Análisis - Aplicaciones en biología marina. | |
| dc.title | Variación en la densidad de células y en la concentración de pigmentos en dinoflagelados simbióticos de tres corales escleractinios en el Caribe colombiano | spa |
| dc.type.coar | http://purl.org/coar/resource_type/c_2df8fbb1 | spa |
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