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106 resultados encontrados para: TEMA: Reserva de la Biosfera Banco Chinchorro (Quintana Roo, México)
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1.
- Artículo con arbitraje
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Age-dependent strategies related to lionfish activities in the Mexican Caribbean
García Rivas, María del Carmen (autora) ; Machkour M'Rabet, Salima (autora) ; Pérez Lachaud, Gabriela (autora) ; Schmitter Soto, Juan Jacobo (autor) ; Céréghino, Régis (autor) ; Doneys, Cassiopea (autora) ; St Jean, Nikolas (autor) ; Hénaut, Yann (autor) ;
Contenido en: Environmental Biology of Fishes Vol. 101, no. 4, 122 (April 2018), p. 563–578 ISSN: 0378-1909
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Resumen en: Inglés |
Resumen en inglés

Lionfish are successful invasive predators in the Caribbean region and inhabit a large range of habitats. Our study in the Caribbean has focused on the relationships between the biological characteristics of lionfish particularly their size, their activities and use of those different habitats. In this study, we observed a high number of lionfish individuals, focusing on the behavioural activities and biological traits in relation to different habitats and environmental characteristics. We monitored 793 individuals, recording their activities, biological traits, and habitat characteristics. Our results report that lionfish are not solitary, but frequently form groups for many activities. We provide evidence of differences between lionfish habitat use according to activity, and the size of individual fish. Considering the size is correlated with age, coral reefs appear to be the preferred habitat of older individuals, whereas the youngest lionfish use a diversity of habitats, ranging from mangroves to coral reefs. In addition, this study suggests that predation of lionfish is age-dependent strategy, and depends on time and the tone of the environment. Lionfish do not only use the head-down posture to catch prey but also horizontal and head-up postures. The youngest lionfish hunt mainly in dark areas and during the night while the older fish were observed hunting mostly during the day and in clear areas. These new aspects of lionfish ecology and behaviour are discussed in light of their invasive success.


2.
Libro - Tesis
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Conflictos de conservación en áreas marinas protegidas: estudio de caso en la reserva de la biosfera banco chinchorro / Presenta: Dalia Méndez Funes
Méndez Funes, Dalia (autora) ; Ayala Orozco, Bárbara (tutor) ; Espinoza Tenorio, Alejandro (tutor) ; García Frapolli, Eduardo (tutor) ;
Ciudad de México, México : Universidad Nacional Autónoma de México. Posgrado en Ciencias de la Sostenibilidad. Instituto de Ecología Política, Gobernanza e Instituciones , 2018
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3.
Artículo
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Halfway to sustainability: management lessons from community-based, marine no-take zones in the Mexican Caribbean
Ayer, Austin ; Fulton, Stuart (coaut.) ; Caamal Madrigal, Jacobo Alejandro (coaut.) ; Espinoza Tenorio, Alejandro (coaut.) ;
Contenido en: Marine Policy Vol. 93 (July 2018), p. 22–30 ISSN: 0308-597X
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Spatial closure regimes such as marine protected areas (MPAs) have emerged as a prominent tool in the effort to balance ecosystem health and fishery productivity. As MPAs have proliferated, the conservation community has begun to supplement traditional biological metrics with social and community considerations in the way it seeks to manage and evaluate such tools. To assess management outcomes and opportunities for a network of community-based, marine no-take zones (NTZs) in the Mexican Caribbean, semi-structured interviews were carried out with fishers and key management stakeholders. Findings indicate that the community-based management strategy has inherent tradeoffs between community engagement and conservation potential. Managers have succeeded in fostering high levels of community support for the initiative, but significant challenges remain, most notably the high presence of illegal fishing within NTZs. Successes and challenges of the community-based management strategy are documented and evaluated within a fisheries resource management framework. As the NTZ network undergoes legal renovation following the completion of its initial five-year term, this work serves as an important resource for both reflection on, and adaptation of, the community-based NTZ management regime.


4.
Artículo
Spatio-temporal assessment of chlorophyll a in Banco Chinchorro using remote sensing
Lazcano Hernández, Hugo Enrique (autor) ; Arellano Verdejo, Javier (autor) ; Hernández Arana, Héctor Abuid (autor) ; Alvarado Barrientos, María Susana (autora) ;
Contenido en: Research in Computing Science Vol. 147, no. 12 (December 2018), p. 213–223 ISSN: 1870-4069
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Resumen en: Inglés |
Resumen en inglés

Quantitative assessments of the temporal variances of physical and biological phenomena are very useful for the understanding of ecosystem functioning. Marine ecosystems are very complex, and regarding biodiversity and fishing resources, Banco Chinchorro (BCh) is one of the most important in the south of the Yucatan Peninsula. Additionally, BCh is an important hotspot of assimilation and release of carbon, for which hurricanes play a supporting role by mixing deep and superficial water masses affecting nutrient mixing and distribution. Here, the concentration of chlorophyll a (Chl a) was quantitatively linked to the occurrence of the four most recent hurricanes that affected BCh utilizing time-series analysis of satellite-derived (AQUA-MODIS) data-sets. Interestingly, different Chl aconcentrations between the south and north of BCh were confirmed quantitatively, which points to differential conservation efforts. The aim of this study was also to provide a proof-of-concept for the development of long-term monitoring methodology using remotely sensed data so that it may be replicated in other regions and with other satellite databases.


5.
Tesis - Doctorado
Estrategias de vida y relaciones interespecíficas del pez león en el caribe mexicano / María del Carmen García Rivas
García Rivas, María del Carmen (autora) ; Hénaut, Yann (director) ; Machkour M'Rabet, Salima (asesora) ; Schmitter Soto, Juan Jacobo (asesor) ; Pérez Lachaud, Gabriela (asesora) ;
Chetumal, Quintana Roo, México : El Colegio de la Frontera Sur , 2017
Clasificación: TE/597.68097267 / G3
Bibliotecas: Chetumal
Cerrar
SIBE Chetumal
ECO030008697 (Disponible)
Disponibles para prestamo: 1
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Índice | Resumen en: Español |
Resumen en español

La invasión del pez león, Pterois volitans (L., 1758) (Scorpaeniformes, Scorpaenidae) en el Atlántico se considera una de las más dañinas para el arrecife. Las medidas actuales de control de la especie se basan en capturas directas por buzos y pescadores que deben mantenerse continuamente para obtener resultados, los cuales son efectivos sólo de manera local. En general, la elaboración de estrategias eficientes para el control de organismos no deseados se basa en el conocimiento de la historia natural y conducta de dichas especies. El presente trabajo relaciona el comportamiento del pez león con las características del hábitat y describe sus interacciones con organismos coexistentes. El estudio se enfoca en: 1) relacionar la talla de los peces león con las características ambientales y su conducta, 2) describir y estudiar los organismos que se asocian con los peces león en sus refugios y 3) reportar nuevos depredadores y consumidores del pez león en el Caribe. Los registros se realizaron en tres localidades del sur de Quintana Roo (el Parque Nacional Arrecifes de Xcalak, la Reserva de la Biosfera Banco Chinchorro y Mahahual), mediante observaciones directas subacuáticas. Las registros de depredación de pez león se hicieron en todo el Caribe de manera directa, por encuestas a manejadores, búsqueda de literatura y videos por internet.

Los datos se analizaron de manera descriptiva y mediante la aplicación de un mapa de organización. Se realizaron pruebas de Mann-Whitney para evaluar si la presencia de peces león se relaciona con la presencia de otros peces. Se observaron un total de 793 peces león y se consideraron tres tipos de comportamiento: descanso, desplazamiento y cacería. Se encontró que los peces león pequeños cazan menos y durante la noche, mientras que los medianos y grandes cazan durante el día y en cualquier tipo de hábitat lo que se puede asociar a una baja depredación. También, 6 se observaron varias especies de peces que coexisten en los mismos refugios que el pez león sin relación alguna siendo las más frecuentes Gramma loreto, Chromis cyanea y Canthigaster rostrata. Gramma loreto es la principal especie asociada al pez león se observó en grupos y asociada con agregaciones de pez león de gran tamaño. Se reportan 24 especies de depredadores/consumidores del pez león cambiando el paradigma del pez león como inmune a depredadores gracias a sus espinas venenosas y bajo número de depredadores en las áreas invadidas. La presencia de pez león puede generar asociaciones más complejas en la comunidad de peces que una simple relación de depredador-presa, actuando tal vez como cliente de peces limpiadores, o bien representando una defensa ante otros depredadores.

Índice

Resumen
Capítulo 1. Introducción General
Capítulo 2. Age-dependent strategies related to lionfish activities in the Mexican Caribbean
Capítulo 3. What characteristics of lionfish and other fishes influence their association in diurnal refuges?
Capítulo 4. More predators and not so effective spines for the invasive lionfish in the Caribbean
Capítulo 5. Discusión
Capítulo 6. Conclusiones
Capítulo 7. Literatura citada


6.
Artículo
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Evidence for wild crocodiles as a risk for human Leptospirosis, Mexico
Pérez Flores, Jonathan Sechaly (coaut.) ; Charruau, Pierre Alexandre Rémy Robert (coaut.) ; Cedeño-Vázquez, J.R. (coaut.) ; Atilano, Daniel (coaut.) ;
Contenido en: EcoHealth Vol. 14, no. 1 (March 2017), p. 58–68 ISSN: 1612-9210
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Resumen en: Inglés |
Resumen en inglés

Sentinel species such as crocodilians are used to monitor the health of ecosystems. However, few studies have documented the presence of zoonotic diseases in wild populations of these reptiles. Herein we analyzed 48 serum samples from Crocodylus acutus (n = 34) and C. moreletii (n = 14) from different sites in the state of Quintana Roo (Mexico) to detect antibodies to Leptospira interrogans by means of a microscopic agglutination test (MAT). Crocodylus acutus and C. moreletii tested positive to 11 and 9 serovars, respectively, with Grippotyphosa being the serovar with the highest prevalence in Cozumel island (100%), Banco Chinchorro Biosphere Reserve (70.6%), and Río Hondo (100%), while in Chichankanab Lake, it was Bratislava (75%). Titers ranged from 1:50 to 1:3200, and the most frequent was 1:50 in all study sites. Leptospira is present in fresh and saltwater individuals due to the resistance of the bacterium in both environments. Cases of infected people involved with crocodile handling and egg collection suggest that these reptiles could play an important role in the transmission of leptospirosis. Preventive medicine programs should consider the monitoring of reptiles, and testing the soil and water, to prevent outbreaks of leptospirosis in facilities containing crocodiles.


7.
- Artículo con arbitraje
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Morphological diversity of the American crocodile (Crocodylus acutus) in the Yucatán Peninsula
Labarre, Didier ; Charruau, Pierre Alexandre Rémy Robert (coaut.) ; Platt, S. G. (coaut.) ; Rainwater, T. R. (coaut.) ; Cedeño-Vázquez, J.R. (coaut.) ; González Cortés, H. (coaut.) ;
Contenido en: Zoomorphology (2017) 136:387–401 Vol. 136, no. 3 (September 2017), p. 387-401 ISSN: 1432-234X
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Resumen en: Inglés |
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Recent evidence suggests that morphological divergence of the American crocodile (Crocodylus acutus) occurred in Greater Antilles under conditions of prolonged isolation and hybridization with the Cuban crocodile (C. rhombifer). We investigated morphological diversity in C. acutus in the coastal zone of the Yucatán Peninsula, where isolation and hybridization have also been reported. We compared the relationships among various morphological traits between insular and coastal populations. Our results suggest morphological diversity in the region, which is possibly related to population isolation and mechanical constraints imposed by differences in diet. A broad-snouted morphotype appears typical of island populations. Hybridization could also cause morphological variation, but its importance in this case remains to be confirmed. Sexual dimorphism of the American crocodile in the region appears to be less pronounced than for other crocodilians. We also provide population-specific size estimation models for two populations (Banco Chinchorro and Cozumel) to improve future monitoring.


8.
Artículo
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Skin parasitism by Paratrichosoma recurvum in wild American crocodiles and its relation to environmental and biological factors
Charruau, Pierre Alexandre Rémy Robert (autor) ; Pérez Flores, Jonathan Sechaly (autor) ; Labarre, Didier (autor) ;
Contenido en: Vol. 122, no. 3 (January 2017), p. 205-211 ISSN: 0177-5103
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Resumen en: Inglés |
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Paratrichosma spp. are capillarid worms that parasitize the abdominal skin of crocodiles. They are likely not a threat to crocodiles' health, but they affect the skins' commercial value. No successful treatment exists against this parasite, and present knowledge of its life cycle is limited. Herein we report new information on Paratrichosoma recurvum occurrence in wild American crocodiles Crocodylus acutus from Mexican Caribbean islands and its relation to environmental (water salinity, temperature, climatic events) and biological (body condition) factors. The percentage of parasitized crocodiles (30.3%) is among the highest recorded in wild crocodilian populations. Small (<40.8 cm total length [TL]) and large (>270 cm TL) crocodiles are less parasitized, probably due to the characteristics of their skin or of the parasite life cycle. Two individuals appeared to have eliminated worms naturally between their capture and recapture. The thorax-abdomen is the most parasitized area of the body of crocodiles. The risk of infection is not associated with the sex of the crocodile, but there was a difference in the proportion of parasitized crocodiles between sites, which could be related to different environmental conditions. The body condition of a crocodile does not seem to be affected by the parasite. Climatic events and water temperature show no effect on the parasitism of crocodiles, but salinity could have an effect. The infection of crocodiles by P. recurvum could depend more on an individual's behavior than on environmental conditions.


9.
Artículo - Ponencia
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Spatial chlorophyll fluorescence analysis of Banco Chinchorro using terra and aqua MODIS products
Lazcano Hernández, Hugo Enrique (autor) ; Alvarado Barrientos, María Susana (autora) ; López Adame, Haydée (autora) ; Vega Zepeda, Alejandro (autor) ; Hernández Arana, Héctor Abuid (autor) ;
Contenido en: Research in Computing Science Vol. 143 (November 2017) ISSN: 1870-4069
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Resumen en: Inglés |
Resumen en inglés

Annual average data of four MODIS (Aqua and Terra) products were analyzed, compared and used to explore temporal trends of indicative parameters of net primary productivity and physiological state of phytoplankton in Banco Chinchorro, a coral reef located southeast of the Yucatan Peninsula. The parameters evaluated were: chlorophyll a concentration (Chl a), normalized fluorescence (NFLH), instantaneous photosynthetic active radiation (iPAR) and sea surface temperature (SST4). According with MODIS Aqua, the first results indicate that between 2002 and 2016, there was a small and steady decrease in NFLH (slope m = -0.0008). The temporal trends found were compared against hydro-meteorological events recorded in the region such as tropical storms and hurricanes. Due to lack of information about spatial fluorescence in the study region, the aim of this document is establishes a point of reference for future research, and define a methodology which can be replicated in other regions.


10.
- Artículo con arbitraje
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Resumen en: Inglés |
Resumen en inglés

In Caribbean reefs, the lionfish Pterois volitans is an invasive species that causes severe negative ecological effects, especially as this crepuscular predator consumes very diverse prey. Lionfish are not active during the day and stay in their refuges, sharing these spaces with various other fishes. The aim of this study is to determine which fishes are associated with the lionfish in their shelters, and what characteristics of both the invasive and native species may influence and explain such coexistence between a predator and its potential prey. Through diving and snorkelling, we visited 141 lionfish refuges, mostly caves, where we observed 204 lionfish and 494 other fish from 16 native species. We recorded species and abundance, as well as lionfish size and abundance. Half of the lionfish were observed in groups and the majority were large-sized. The association with most fish species seems fortuitous, but three species, Gramma loreto, Chromis cyanea and Canthigaster rostrata, were frequently observed in association with lionfish. Numerous fish juveniles, most likely Scarus coeruleus, were also observed together with the invasive predator. The more commonly associated fishes, particularly G. loreto, are mostly associated with large-sized lionfish that were found in groups. The associated fishes are also generally found in groups. Gramma loreto is a potential cleaner of the lionfish; the reasons for the association between these fish species and the invasive lionfish may be more complex than a simple predator-prey relationship and are discussed based on their biological traits and previously reported lionfish trophic ecology and predation behaviour.