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14 resultados encontrados para: AUTOR: Vidal Martínez, Víctor Manuel
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Resumen en: Inglés |
Resumen en inglés

Background: We assessed metrics of the metazoan parasite infracommunities of the dusky founder (Syacium papillosum) as indicators of aquatic environmental health of the Yucatan Shelf (YS) prior to oil extraction. We sampled the dusky founder and its parasites along the YS, mostly during the 2015 north wind season (November–April). Our aims were: (i) to determine whether the parasite infracommunity metrics of S. papillosum exhibit signifcant diferences among YS subregions; (ii) to determine whether the probability of the occurrence of its parasite species and individu‑ als were afected by environmental variables, nutrients, heavy metals and hydrocarbons at the seascape level; and (iii) to determine whether there were statistical diferences between the parasite infracommunity metrics of S. papillosum from YS and those of Syacium gunteri from the Campeche Sound. Multivariate statistical analyses and generalised additive models (GAMs) were used to examine the potential statistical associations between the contaminants, environmental variables and parasite community metrics, and the maximum entropy algorithm (MaxEnt) was used to characterise the habitat’s suitability for the parasite’s probability of occurrence. Results: We recovered 48 metazoan parasite species from 127 S. papillosum, with larval cestodes and digeneans being the most numerically-dominant. Multivariate analyses showed signifcant diferences in parasite infracommu‑ nity metrics among Western YS, Mid YS and Caribbean subregions, with the latter being the richest in species but not in individuals. The GAM and MaxEnt results indicated a negative efect of top predators (e.g. sharks and rays) removal on parasite metrics. The parasite infracommunities of S. papillosum were twice as rich in the number of species and individuals as those reported for S. gunteri from the Campeche Sound.

Conclusions: The significant differences among subregions in parasite metrics were apparently due to the interruption of the Yucatan current during the north wind season. The fishing of top predators in combination with an influx of nutrients and hydrocarbons in low concentrations coincides with an increase in larval cestodes and digeneans in S. papillosum. The dusky founder inhabits a region (YS) with a larger number of metazoan parasite species compared with those available for S. gunteri in the Campeche Sound, suggesting better environmental conditions for transmis‑ sion in the YS.


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Resumen en: Inglés |
Resumen en inglés

Here, we present the results of a taxonomic survey of the nematodes parasitizing fishes from the lagoon flats of Palmyra Atoll, Eastern Indo-Pacific. We performed quantitative parasitological surveys of 653 individual fish from each of the 44 species using the intertidal sand flats that border the atoll’s lagoon. We provide morphological descriptions, prevalence, and mean intensities of the recovered seven species of adult nematode (Pulchrascaris chiloscyllii, Capillariidae gen. sp., Cucullanus bourdini, Cucullanus oceaniensis, Pseudascarophis sp., Spinitectus (Paraspinitectus) palmyraensis sp. nov., Philometra pellucida) and three larval stages (Pulchrascaris sp., Hysterothylacium sp., Cucullanus sp.). We recorded: Pulchrascaris chiloscyllii from Carcharhinus melanopterus; Capillariidae gen. sp. from Chaetodon lunula, Lutjanus fulvus, and Ellochelon vaigiensis; Cucullanus bourdini from Arothron hispidus; Cucullanus oceaniensis from Abudefduf sordidus; Pseudascarophis sp. from Chaetodon auriga, Chaetodon lunula, and Mulloidichthys flavolineatus; Spinitectus (Paraspinitectus) palmyraensis sp. nov. from Albula glossodonta; Philometra pellucida from Arothron hispidus; and three larval forms, Pulchrascaris sp. from Acanthurus triostegus, Acanthurus xanthopterus, Rhinecanthus aculeatus, Platybelone argalus, Carangoides ferdau, Carangoides orthogrammus, Caranx ignobilis, Caranx melampygus, Caranx papuensis, Chaetodon auriga, Chanos chanos, Amblygobius phalaena, Asterropteryx semipunctata, Valencienea sexguttata,

Kyphosus cinerascens, Lutjanus fulvus, Lutjanus monostigma, Ellochelon vaigiensis, Mulloidichthys flavolineatus, Upeneus taeniopterus, Gymnothorax pictus, Abudefduf septemfasciatus, Abudefduf sordidus, and Stegastes nigricans; Hysterothylacium sp. type MD from Acanthurus triostegus, Carangoides ferdau, Chaetodon lunula, Chanos chanos, Kyphosus cinerascens, Abudefduf sordidus, and Arothron hispidus; and Cucullanus sp. from Caranx ignobilis. Spinitectus (Paraspinitectus) palmyraensis sp. nov. (Cystidicolidae) is described from the intestine of roundjaw bonefish Albula glossodonta. All the nematode species reported in this study represent new geographical records. We discuss how our survey findings compare to other areas of the Indo-Pacific, and the way the relatively numerical dominance of trophically transmitted larval stages likely reflect the intact food web of Palmyra Atoll, which includes a large biomass of large-bodied top predator sharks and ray-finned fishes.


3.
Libro
Diagnóstico de los sectores de la pesca y la acuacultura en el estado de Yucatán / Víctor M. Vidal Martínez y Miguel Ángel Olvera Novoa, coordinadores
Vidal Martínez, Víctor Manuel (coord.) (1962-) ; Olvera Novoa, Miguel Ángel (coord.) ;
Distrito Federal, México : Organización de las Naciones Unidas para la Alimentación y la Agricultura :: Secretaría de Desarrollo Rural :: Gobierno del estado de Yucatán , 2016
Clasificación: Y/333.956097265 / D5
Bibliotecas: Campeche
Cerrar
SIBE Campeche
ECO040006438 (Disponible)
Disponibles para prestamo: 1

4.
Libro
Plan rector para el desarrollo de la pesca y la acuacultura sostenibles de Yucatán / Víctor M. Vidal Martínez y Miguel Ángel Olvera Novoa, coordinadores
Vidal Martínez, Víctor Manuel (coord.) (1962-) ; Olvera Novoa, Miguel Ángel (coord.) ;
Distrito Federal, México : Organización de las Naciones Unidas para la Alimentación y la Agricultura :: Secretaría de Desarrollo Rural :: Gobierno del estado de Yucatán , 2016
Clasificación: Y/333.9567265 / P5
Bibliotecas: Campeche
Cerrar
SIBE Campeche
ECO040006437 (Disponible)
Disponibles para prestamo: 1

5.
Libro
Plan rector para el desarrollo de la pesca y la acuacultura sustentables de Yucatán: síntesis del diagnóstico y propuesta de estrategia de desarrollo sectorial / Víctor M. Vidal Martínez y Miguel Ángel Olvera Novoa, coordinadores
Vidal Martínez, Víctor Manuel (coord.) (1962-) ; Olvera Novoa, Miguel Ángel (coord.) ;
Distrito Federal, México : Organización de las Naciones Unidas para la Alimentación y la Agricultura :: Secretaría de Desarrollo Rural :: Gobierno del estado de Yucatán , 2016
Clasificación: Y/333.9567265 / P53
Bibliotecas: Campeche
Cerrar
SIBE Campeche
ECO040006436 (Disponible)
Disponibles para prestamo: 1

6.
Libro
1er. simposio de investigación, innovación y desarrollo tecnológico: fondo mixto CONACYT-Tabasco
Simposio de investigación, Innovación y desarrollo tecnológico (1er. : 2013 : Villahermosa, Tabasco) ;
Villahermosa, Tabasco, México : Consejo de Ciencia y Tecnología del Estado de Tabasco , 2013
Clasificación: T/303.483097263 / S5
Bibliotecas: Villahermosa
Cerrar
SIBE Villahermosa
ECO050005708 (Disponible)
Disponibles para prestamo: 1

7.
Artículo
*En hemeroteca, SIBE-Chetumal
Ballast water as a vector of coral pathogens in the Gulf of Mexico: the case of the Cayo Arcas coral reef
Aguirre Macedo, M. Leopoldina (coaut.) ; Vidal Martínez, Víctor Manuel (coaut.) (1962-) ; Herrera Silveira, Jorge Alfredo ;
Contenido en: Marine Pollution Bulletin Vol. 56, no. 9 (September 2008), p. 1570-1577 ISSN: 0025-326X
Bibliotecas: Chetumal
Cerrar
SIBE Chetumal
47027-10 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-Chetumal

8.
Artículo
*En hemeroteca, SIBE-Chetumal, SIBE-San Cristóbal
Las comunidades de helmintos del lenguado (Symphurus plagiusa) en la costa de Campeche, México
Rodríguez González, Abril ; Vidal Martínez, Víctor Manuel (1962-) ;
Contenido en: Revista Mexicana de Biodiversidad Vol. 79, no. 1 (junio 2008), p. 159-173 ISSN: 1870-3453
Bibliotecas: Chetumal , San Cristóbal
Cerrar
SIBE Chetumal
46882-10 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
46882-20 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-Chetumal, SIBE-San Cristóbal
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Resumen en: Español | Inglés |
Resumen en español

Se caracterizaron las comunidades componentes e infracomunidades de helmintos de Symphurus plagiusa en 37 puntos de muestreo de mayo a septiembre de 2003 en la costa de Campeche. Además, se exploraron posibles asociaciones estadísticas entre la abundancia de cada especie y los parámetros ambientales (salinidad, oxígeno, volumen de descarga de agua de ríos) mediante análisis de redundancia (RDA). Se examinaron 531 hospederos, cuyas comunidades componentes e infracomunidades fueron pobres en número de especies (máximos: 8 y 3 ± 1 respectivamente), pero no en individuos (16775 y 47 ± 32). La diversidad fue baja (componente: Simpson = 1; infracomunidad: Brillouin = 0.24 ± 0.11). La similitud en cada mes fue baja para componente (cualitativa, Jaccard: 0.25 ± 0.34; cuantitativa, % de similitud: 51 ± 49) e infracomunidad (cualitativa: 0.59 ± 0.24; cuantitativa: 46 ± 24). La similitud entre meses fue alta en componente (cualitativa: 0.63 ± 0.28; cuantitativa: 82 ± 15) e infracomunidad (cualitativa: 0.89 ± 0.10; cuantitativa: 77 ± 21). Hubo asociaciones signifi cativas entre la abundancia de especies y el volumen de descarga de agua de los ríos entre meses, lo que sugiere que este parámetro infl uye fuertemente sobre la composición y estructura de estas comunidades.

Resumen en inglés

The component communities and infracommunities of Symphurus plagiusa were characterized for 37 sampling points from May to September 2003 along the Campeche coast. Possible statistical associations were also studied between the abundance of each helminth species and environmental parameters (e.g. salinity, oxygen concentration, river discharge water volumes) using redundancy analysis (RDA). We examined 531 hosts, whose component communities and infracommunities were poor in species number (maximum: 8 and 3 ± 1 respectively); but not in number of individuals (16775 and 47 ± 32). Diversity was low (component: Simpson = 1; infracommunity: Brillouin = 0.24 ± 0.11). Similarity within months was also low for both component communities (qualitative, Jaccard: 0.25 ± 0.34; quantitative, % of similarity: 51 ± 49) and infracommunities (qualitative: 0.59 ± 0.24; quantitative: 46 ± 24). Similarity between months was high for component communities (qualitative: 0.63 ± 0.28; quantitative: 82 ± 15) and infracommunities (qualitative: 0.89 ± 0.10; quantitative: 77 ± 21). There were signifi cant associations between the abundance of species and the river water discharges between months, which suggest high infl uence of this parameter on the structure and composition of these helminth communities


9.
Artículo
*En hemeroteca, SIBE-Chetumal, SIBE-San Cristóbal
Heterobothrium lamothei n. sp. (Monogenea: Diclidophoridae) from the gills of Sphoeroides testudineus (Pisces: Tetraodontidae) from the coast of Yucatán, Mexico
Vidal Martínez, Víctor Manuel (1962-) ; Mendoza Franco, Edgar Fernando ;
Contenido en: Revista mexicana de biodiversidad Supl. Vol. 79, (agosto 2008), p. 89S-93S ISSN: 1870-3453
Bibliotecas: Chetumal , San Cristóbal
Cerrar
SIBE Chetumal
46886-10 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE San Cristóbal
46886-20 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-Chetumal, SIBE-San Cristóbal
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10.
Artículo
Helminth communities of four commercially important fish species from Chetumal Bay, Mexico
Aguirre Macedo, M.L. ; Vidal Martínez, Víctor Manuel (coaut.) (1962-) ; González Solís, David (coaut.) ; Caballero, P.I. (coaut.) ;
Contenido en: Journal of Helminthology Vol. 81, no. 1 (2007), p. 19-31 ISSN: 0022-149X
Bibliotecas: Villahermosa
Cerrar
SIBE Villahermosa
22225-30 (Disponible)
Disponibles para prestamo: 1
Resumen en: Inglés |
Resumen en inglés

The relative importance of ecology and evolution as factors determining species richness and composition of the helminth communities of fish is a matter of current debate. Theoretical studies use host–parasite lists, but these do not include studies on a temporal or spatial scale. Local environmental conditions and host biological characteristics are shown to influence helminth species richness and composition in four fish species (Eugerres plumieri, Hexanematichthys assimilis, Oligoplites saurus, and Scomberomorus maculatus) in Chetumal Bay, Mexico. With the exception of H. assimilis, the helminth communities had not been previously studied and possible associations between environmental and host biological characteristics as factors determining helminth species richness and composition using redundancy analysis (RDA) are described.

Thirty-four helminth species are identified, with the highest number of species (19 total (mean ¼ 6.3 ^ 2.1)) and the lowest (9 (4.0 ^ 1.0)) occurring in H. assimilis and S. maculatus, respectively. The larval nematodes Contracaecum sp. and Pseudoterranova sp. were not only the helminth species shared by all four host species but also were the most prevalent and abundant. Statistical associations between helminth community parameters and local ecological variables such as host habitat use, feeding habits, mobility, and time of residence in coastal lagoons are identified. Phylogeny is important because it clearly separates all four host species by their specialist parasites, although specific habitat and feeding habits also significantly influence the differentiation between the four fish species.