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27 resultados encontrados para: TEMA: Especies invasivas
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1.
- Tesis
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Biología reproductiva del pez diablo Pterygoplichthys pardalis (Castelnau, 1855) en el alto Río Hondo, La Unión, Quintana Roo, México / Gabriel Hernández Gómez
Hernández Gómez, Gabriel ; Medina Quej, Alejandro (director) ; Schmitter Soto, Juan Jacobo (director) ;
Chetumal, Quintana Roo, México : Instituto Tecnológico de Chetumal , 2019
Clasificación: TE/597.49097267 / H4
Bibliotecas: Chetumal
Cerrar
SIBE Chetumal
ECO030008778 (Disponible)
Disponibles para prestamo: 1
Nota: En proceso técnico. Solicítelo con el bibliotecario(a) de SIBE-Chetumal

2.
Artículo
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Canid collision - expanding populations of coyotes (Canis latrans) and crab-eating foxes (Cerdocyon thous) meet up in Panama
Hody, Allison W. (autor) ; Moreno, Ricardo S. (autor) ; Meyer, Ninon France Victoire (autora) ; Pacifici, Krishna (autor) ; Kays, Roland (autor) ;
Contenido en: Journal of Mammalogy Vol. 100, no. 6 (December 2019), p. 1819-1830 ISSN: 1545-1542
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Resumen en español

El surgimiento del Istmo de Panamá hace 3–4 millones de años permitió las primeras dispersiones de mamíferos entre Norteamérica y Sudamérica, el cual se conoce como el Gran Intercambio Biótico Americano. Hoy en día, la deforestación no solo amenaza la conectividad histórica entre los bosques, sino también crea un os habitats y adecuados hábitats para las especies de zonas abiertas, como se ha documentado con las expansiones recientes del coyote (Canis latrans) desde Norteamérica y del zorro cangrejero (Cerdocyon thous) desde Sudamérica. Nosotros utilizamos trampas cámara para mapear las expansiones de éstas dos especies en el este de Panamá; encontramos que para el año 2015, las poblaciones de coyotes habían colonizado la mayor parte del área agrícola al Oeste del Lago Bayano. La mayoría de nuestros muestreos con trampas cámara al Este documentaron zorros cangrejeros, y con base a individuos atropellados, tenemos la evidencia que algunos zorros cangrejeros ya habían avanzado más hacia el Oeste. Sin embargo, nunca se registraron ambas especies en el mismo muestreo con trampas cámara, lo cual sugiere que ambas especies se evitan a una escala espacio-temporal fina. Se utilizó un enfoque de fusión de datos para construir modelos de distribución de especies que combinaban nuestros datos de trampas cámara con registros obtenidos de la literatura y de animales atropellados. Aunque los datos auxiliares mejoraron la precisión prevista para ambas especies, no sobresalió un patrón de selección de hábitat claro, lo cual podría reflejar las tendencias generalistas de estos cánidos, o el hecho de que ambos se encuentren en las etapas iniciales de colonización de la región. Los registros fotográficos mostraron que ambas especies eran nocturnas y revelaron que los coyotes tenían una morfología similar a la de los perros domésticos, indicando una posible hibridación.

Nuestro monitoreo continuo en el Darién, documentó individuos de coyote moviéndose en el borde Oeste de la provincia en el 2016 y en el 2018. Esto significa que solo queda el gran bosques del Darién entre los coyotes y Sudamérica. Si la deforestación sigue en la región, estos dos cánidos invasores podrían representar los primeros de un nuevo “No-Tan-Gran Intercambio Biótico Americano” donde las especies generalistas y adaptadas a la perturbación humana cruzan los continentes y amenazan la biota nativa.

Resumen en inglés

The rise of the Panamanian Isthmus 3-4 million years ago enabled the first dispersal of mammals between North and South America in what is known as the Great American Biotic Interchange. Modern deforestation threatens the historic forest connectivity and creates new habitat for open-country species, as documented by recent expansions of North American coyotes (Canis latrans) and South American crabeating foxes (Cerdocyon thous) into Central America. We used camera traps to map the expansions of these species into eastern Panama and found that, by 2015, coyote populations had colonized most agricultural area west of Lago Bayano. Most of our camera arrays east of this point documented crabeating foxes, and evidence from roadkills showed some foxes had advanced farther west, but we never documented both species at the same camera-trap array, suggesting the possibility of fine-scale spatial avoidance.

We used a data fusion approach to build species distribution models combining our camera surveys with records from the literature and roadkill. While the auxiliary data improved the predictive accuracy for both species, few clear habitat patterns emerged, which might reflect the generalist tendencies of these canids, or the fact that both are in the early stages of colonizing the region. Camera-trap photos showed that both species were nocturnal and revealed some dog-like morphology in coyotes, which could indicate their recent hybridization with dogs (Canis familiaris). Our continued monitoring of the Darién documented single coyotes moving through the western edge of the area in 2016 and 2018. This leaves only the great Darién forests between coyotes and South America. If deforestation continues in the region, these two invasive canids could represent the first of a new, Not-So-Great American Biotic Interchange, where generalist species adapted to human disturbance cross continents and threaten native biota


3.
Artículo
Fertility life tables of Raoiella indica (Trombidiformes: Tenuipalpidae) at different temperature and humidity levels
Martínez Mejía, David (autor) ; Otero Colina, Gabriel (autor) ; González Gómez, Rebeca (autora) ; Pérez Panduro, Alejandro (autor) ; Valle Mora, Javier Francisco (autor) ;
Disponible en línea
Contenido en: Revista Colombiana de Entomología Volumen 45, número 1, e7810 (2019), p. 1-8 ISSN: 2665-4385
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Resumen en: Español | Inglés |
Resumen en español

Se realizó un estudio de tablas de vida y fecundidad de Raoiella indica en foliolos de palma de coco (Cocos nucifera) a temperatura y humedad relativa (HR) controladas, en Texcoco, México, con el objetivo de estimar los parámetros de incremento poblacional de este ácaro. Cohortes de 50 huevos de Raoiella indica de 12 horas de edad se incubaron a 22,5, 25, 27,5 o 30 °C y 40-50 % de HR, así como a 27,5 °C con 30-40, 60-70 u 80-90 % de HR. Se les observó diariamente hasta que murió el último. A las hembras que alcanzaron el estado adulto se les proporcionaron dos machos para promover su apareamiento y luego se registró diariamente su oviposición. Machos de un día de edad se pusieron diariamente en contacto cada uno con una deutoninfa quiescente hembra para observar cuántas veces un macho podía copular, cuando las deutoninfas alcanzaran el estado adulto. Con todas las temperaturas y HR’s, la mortalidad se distribuyó uniformemente a lo largo de las observaciones. Tasa de desarrollo, reproducción y, consecuentemente, parámetros de incremento poblacional, estuvieron significativamente asociados con la temperatura. La mayor tasa intrínseca de incremento poblacional ocurrió a 27,5 °C y 40-50 % de HR. Por sí sola, la HR no afectó significativamente a dichas variables, aunque sus valores extremos tuvieron ligeros efectos negativos. Se observaron aproximadamente cuatro hembras por cada macho. Los machos copularon en promedio con 4,56 hembras; ello sugiere que entre 20 y 30 % de machos bastan para fecundar a todas las hembras presentes.

Resumen en inglés

A study of fertility life tables of Raoiella indica was carried out on coconut (Cocos nucifera) leaflets at controlled temperature and relative humidity (RH) in Texcoco, Mexico, with the objective of estimating the parameters of population increase of this mite. Cohorts of 12-hour-old Raoiella indica eggs were incubated at 22.5, 25, 27.5 or 30 °C and 40-50 % RH, as well as 27.5 °C with 30-40, 60-70 or 80-90 % RH. They were observed daily until the last mite died. Females that attained adulthood were provided with two males to promote mating and their oviposition was recorded daily. Each one-day-old male was put in contact with a female quiescent deutonymph daily to determine how many times a male could copulate after the deutonymph became an adult. With all temperatures and RH’s, mortality was evenly distributed throughout the observations. Developmental rate, reproduction, and, consequently, parameters of population increase were significantly associated with temperature. The highest rate of population increase took place at 27.5 °C and 40-40 RH. By itself, RH did not significantly affect those variables, although its extreme values showed slight negative effects. Approximately four females per male were observed. Males copulated with 4.56 females on average; this suggests that between 20 and 30 % of the males are enough to fertilize all females present.


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Resumen en: Inglés |
Resumen en inglés

The role of invasive species in ecosystem functioning represents one of the mainchallenges in ecology.Pteridium aquilinumis a successful cosmopolitan invasive specieswith negative effects on the ecological mechanisms that allow secondary succession. Inthis study, we evaluated the influence of P. aquilinumon secondary succession underdifferent disturbances in a seasonal dry forest of the Yucatán Peninsula. We determined species richness, composition and the relative importance value in four sampling units. Fabaceae followed by Asteraceae, Meliaceae, Rubiaceae, Sapindaceae and Verbenaceaewere the most species rich families. A dissimilarity analysis determined significant differences in beta diversity between sampling units. With a generalized linear model wefound that species richness was best explained by site conditions, followed by calciumand soil organic matter. Also, the generalized linear model showed that abundanceresulted in a strong correlation with site conditions and soil characteristics. Specific soil conditions related to phosphoro and calcium were also detected as beneficiary tothe successional processes. Our results suggest that applying fire restriction and periodiccutting of the bracken fern, this can increase a higher diversity of species.


5.
Artículo
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Species richness of urban and rural fish assemblages in the Grijalva Basin floodplain, southern Gulf of Mexico
Sánchez Martínez, Alberto de Jesús (autor) ; Álvarez Pliego, Nicolás (autor) ; Espinosa Pérez, Héctor (autor) ; Florido Araujo, Rosa Amanda (autora) ; Macossay Cortez, Alberto (autor) ; Barba Macías, Everardo (autor) ; Salcedo Meza, Miguel Ángel (autor) ; Garrido Mora, Arturo (autor) ;
Disponible en línea
Contenido en: Cybium Volumen 43, número 3 (April 2019), páginas 239-254 ISSN: 2101-0315
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Resumen en: Inglés | Frances |
Resumen en inglés

Urban sprawl poses a major threat to aquatic biodiversity. The species richness in fish assemblages of fifteen ecosystems with different degrees of hydraulic connectivity in the floodplain of the Grijalva River watershed has been analysed and described along five years. After human interventions, four lagoons are permanently disconnected and three are temporarily connected. The other three lagoons stay permanently interconnected. Native cichlids and poeciliids dominated in number of species, representing 24 of the 55 listed species. These 55 species include six non-native invasive species in the Usumacinta Province. The lowest number of species was recorded in urban lagoons, while they were similar in rural lagoons and rivers. In addition, 60% of the fish absent in the lagoons of the Metropolitan Area of Villahermosa (MAV) are species with a marine or an estuarine affinity; thus, the permanently disconnected MAV lagoons have seven species less than the permanently connected rural lagoons. Diversity corresponds to that reported in the literature. In urban lagoons, low diversity and the high percentage of lacking fish with a marine or an estuarine affinity indicate that ichthyological diversity is favoured by the interconnection of rivers and rural lagoons in the floodplain of the Grijalva River Basin.

Resumen en frances

L’expansion urbaine est une menace pour la biodiversité aquatique. La richesse en espèces dans des assemblages de poissons de quinze écosystèmes avec différents degrés de connectivité hydraulique situés dans la plaine inondable du bassin versant du fleuve Grijalva a été analysée et décrite au cours de cinq années. Suite à des interventions humaines, quatre lagunes sont déconnectées en permanence et trois sont temporairement connectées. Trois autres lagunes restent interconnectées en permanence. Les cichlidés et les poeciliidés natifs dominent en nombre d’espèces, représentant 24 des 55 espèces répertoriées. Ces 55 espèces incluent 6 espèces invasives non indigènes in the Usumacinta Province. Les diversités spécifiques les plus faibles ont été enregistrées dans les lagunes urbaines, tandis qu’elles plus importantes et similaires dans les lagunes et les rivières rurales. De plus, 60% des poissons absents dans les lagunes de la Région Métropolitaine de Villahermosa (MAV) sont des espèces ayant une affinité marine ou estuarienne. Les lagunes MAV déconnectées en permanence comptaient sept espèces de moins que les lagunes rurales connectées en permanence. La diversité correspond à celle rapportée dans la littérature. Une faible diversité et l’absence de poissons ayant une affinité marine ou estuarienne dans les lagunes urbaines indiquent que la diversité ichtyologique est favorisée par l’interconnexion des rivières et lagunes rurales situées dans la plaine inondable du bassin du fleuve Grijalva.


6.
Artículo
Using eDNA to biomonitor the fish community in a tropical oligotrophic lake
Valdéz Moreno, Martha (autora) ; Ivanova, Natalia V. (autora) ; Elías Gutiérrez, Manuel (autor) ; Pedersen, Stephanie L. (autora) ; Bessonov, Kyrylo (autor) ; Hebert, Paul D. N. (autor) ;
Contenido en: PLoS One Vol. 14, no. 4, e0215505 (April 2019), p. 1-22 ISSN: 0173-9565
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Resumen en: Inglés |
Resumen en inglés

Environmental DNA (eDNA) is an effective approach for detecting vertebrates and plants, especially in aquatic ecosystems, but prior studies have largely examined eDNA in cool temperate settings. By contrast, this study employs eDNA to survey the fish fauna in tropical Lake Bacalar (Mexico) with the additional goal of assessing the possible presence of invasive fishes, such as Amazon sailfin catfish and tilapia. Sediment and water samples were collected from eight stations in Lake Bacalar on three occasions over a 4-month interval. Each sample was stored in the presence or absence of lysis buffer to compare eDNA recovery. Short fragments (184–187 bp) of the cytochrome c oxidase I (COI) gene were amplified using fusion primers and then sequenced on Ion Torrent PGM or S5 before their source species were determined using a custom reference sequence database constructed on BOLD. In total, eDNA sequences were recovered from 75 species of vertebrates including 47 fishes, 15 birds, 7 mammals, 5 reptiles, and 1 amphibian. Although all species are known from this region, six fish species represent new records for the study area, while two require verification. Sequences for five species (2 birds, 2 mammals, 1 reptile) were only detected from sediments, while sequences from 52 species were only recovered from water. Because DNA from the Amazon sailfin catfish was not detected, we used a mock eDNA experiment to confirm our methods would enable its detection. In summary, we developed protocols that recovered eDNA from tropical oligotrophic aquatic ecosystems and confirmed their effectiveness in detecting fishes and diverse species of vertebrates.


7.
- 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.


Resumen en: Inglés |
Resumen en inglés

Marine protected areas (MPAs) conserve diversity and abundance of fish communities. According to the biotic resistance hypothesis, communities with higher diversity and abundance should resist invasions better. To test this idea, the presence of lionfish in two Caribbean MPAs was studied: Parque Nacional Guanahacabibes (PNG) in Cuba and Parque Nacional Arrecifes de Xcalak (PNAX) in Mexico. Selection of these MPAs was based on both their different levels of success with enforcement and different abundances of native fish, with a more abundant native fish fauna at PNG. Underwater visual censuses were used to evaluate both the native fish structure and composition and at the same time distribution and abundance of lionfish. The abundance of potential predators on lionfish was also measured to determine possible effects of lionfish on both the abundance and the size of its prey and competitors. Lionfish showed higher abundance and larger size in PNG compared to PNAX, even though its probable competitors and predators were also more abundant and larger in PNG. Prey abundance and size decreased after the invasion. No correlation was detected between potential predators and lionfish, which might indicate natural predation is not substantial. In PNAX, lower abundance of prey, potential competitors and predators can also be attributed to historical overfishing, but this did not provide an advantage to lionfish. Lionfish were less abundant and reached smaller sizes in PNAX compared to PNG. This work confirms the effectiveness of lionfish culling at PNAX, but does not support the biotic resistence hypothesis that native fish might have controlled this invasive species.


9.
- Artículo con arbitraje
Resumen en español

El pez león (Pterois volitans) invadió la región del Caribe y tiene el potencial de alterar la composición y estructura de las comunidades de peces en los arrecifes coralinos. El objetivo de este estudio fue analizar los índices de diversidad en las comunidades de peces nativos en sitios invadidos por el pez león en dos áreas marinas protegidas (AMP) del Caribe y compararlos con datos previos a la invasión. En ambas AMP, Parque Nacional Guanahacabibes (PNG) en el occidente de Cuba y Parque Nacional Arrecifes de Xcalak (PNAX) en el S de Quintana Roo, se realizaron censos visuales de las especies de peces en hábitats durante las épocas de seca y lluvia del 2013-2015. Se evaluaron nueve sitios, mediante conteos estacionarios. Se registró mayor riqueza de especies en el PNG (43.47±5.14) que en el PNAX (40.22±4.96). No se observaron diferencias entre épocas en ninguna de las AMP. El pez león se ubicó entre las especies más abundantes del PNG. La abundancia media en el PNG (0.76 ± 1.25) fue mayor a la registrada en el PNAX (0.19±0.46). La diversidad disminuyó después de la llegada del pez león en un solo sitio del PNG y en dos sitios del PNAX, pero al parecer estos resultados están más asociados al efecto de la pesca que a la presencia del pez león. A partir de los resultados y asumiendo que los cambios en las comunidades de peces por el pez león podrían no detectarse aún, recomendamos seguir los monitoreos de los descriptores comunitarios para detectar cambios futuros en las comunidades de peces.

Resumen en inglés

Lionfish (Pterois volitans) invaded the Caribbean region with the potential to alter the composition and structure of native coral reef fish communities. The objective of this study was to analyze the diversity indices of these fish communities potentially affected by lionfish predation and to compare with pre-invasion data. The study was undertaken in two Caribbean marine protected areas (MPAs): Guanahacabibes National Park (PNG) in W Cuba and Xcalak Reefs National Park (PNAX) in S Quintana Roo. We carried out visual censuses of fish species in reef habitats during the dry and rainy seasons of the period 2013-2015. For this, nine sites were defined and evaluated using stationary counts. Our results showed higher species richness (43.47 ± 5.14) and mean abundance (0.76 ± 1.25) in PNG than in PNAX (40.22 ± 4.96, 0.19 ± 0.46, respectively). Diversity decreased after the arrival of lionfish in a single site of PNG and in two sites of the PNAX, but apparently, these results are more related to the fishing activity effect than to the lionfish presence. Based on the results and assuming that changes in the native fish communities by lionfish may not yet be detected, we recommend to continue the monitoring community descriptions in order to detect future changes in native fish communities.


10.
- Artículo con arbitraje
Diversidad de moluscos y crustáceos acuáticos en tres zonas en la cuenca del río Usumacinta, México
Trinidad Ocaña, Cinthia ; Juárez Flores, Juan (coaut.) ; Sánchez Martínez, Alberto de Jesús (coaut.) ; Barba Macías, Everardo (coaut.) ;
Contenido en: Revista Mexicana de Biodiversidad Supl., Vol. 89 (diciembre 2018), p. S65-S78 ISSN: 0187-6376
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Resumen en: Español | Inglés |
Resumen en español

Los moluscos y crustáceos son importantes en la transferencia energética a niveles tróficos superiores, además de que indican la condición de los ecosistemas acuáticos. La diversidad de ambos grupos se determinó mediante muestreos diurnos en ambientes lóticos y lénticos en 3 zonas de la cuenca del río Usumacinta: planicie delta 1 y 2 (PD) y montaña fluvial (MF), abarcando los periodos hidrológicos de mínima inundación (mín-I), transición y máxima inundación (máx-I). Se registraron 236,250 organismos pertenecientes a 35 y 13 especies de moluscos y crustáceos, con 99% y 1% de la abundancia total, respectivamente. El 85% de abundancia de moluscos correspondió a Melanoides tuberculata y Tarebia granifera (especies invasoras), y el 67% de los crustáceos a Macrobrachium sp. y Penaeus duorarum. La diversidad máxima de moluscos por zona fue en PD2 (H' = 2.4); por ambiente en lóticos (H' = 2.9) y por temporada en mín-1 (H' = 2.2). Con respecto a los crustáceos, la diversidad fue máxima en la zona PD1 (H' = 2.2), en lóticos (H' = 2.0) y en máx-1 (H' = 2.1). La diversidad varió por la mayor heterogeneidad de los hábitats y la influencia marina.

Resumen en inglés

Mollusks and crustaceans are important in making energy available to upper trophic levels, besides, they are indicators of aquatic ecosystems condition. Diversity and abundance were determined by diurnal samples in lotic and lentic systems in 3 zones: delta 1 and 2 floodplain (PD) and fluvial highlands (MF) of the Usumacinta river basin during hydrological periods of minimum flooding, transition and maximum flooding. A total of 236,250 organisms was collected, which belong to 35 and 13 species of mollusks and crustaceans, with 99% and 1% of the total abundance, respectively. The 85% of the abundance of mollusks was represented by Melanoides tuberculata and Tarebia granifera (invasive species), whereas the 67% of the crustaceans was represented by Macrobrachium sp. and Penaeus duorarum. The highest diversity for mollusks was in zone PD2 (H' = 2.4); in lotic (H' = 2.9) and mín-1 season (H' = 2.2). Regarding the crustaceans, the highest diversity was in PD1 (H' = 2.2), in lotic (H' = 65 2.0) and in máx-1 season (H' = 2.1). The diversity varied due to habitat heterogeneity and marine influence recorded.