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25 resultados encontrados para: AUTOR: Cervantes Martínez, Adrián
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1.
- Libro con arbitraje
Freshwater copepods (Calanoida, Cyclopoida and Harpacticoida) from the Chihuahuan Desert / Martha Angélica Gutiérrez-Aguirre, Eduardo Suárez-Morales, Adrián Cervantes-Martínez, Elizabeth J. Walsh
Gutiérrez Aguirre, Martha Angélica (autora) ; Suárez Morales, Eduardo (autor) ; Cervantes Martínez, Adrián (autor) ; Walsh, Elizabeth J. (autora) ;
Estado de México, México : Clave Editorial , c2019
Clasificación: EE/595.34097216 / F7
Bibliotecas: Campeche , San Cristóbal , Tapachula
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SIBE Campeche
ECO040007056 (Disponible)
Disponibles para prestamo: 1
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SIBE San Cristóbal
ECO010019842 (Disponible)
Disponibles para prestamo: 1
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SIBE Tapachula
ECO020010989 (Disponible)
Disponibles para prestamo: 1
Índice | Resumen en: Inglés |
Resumen en inglés

This document is the result of collaborative work among colleagues from different institutions in Mexico (Universidad de Quintana Roo, Cozumel and El Colegio de la Frontera Sur, Chetumal) and the United States (University of Texcas, El Paso). This work presents the taxonomy, morphology and distribution of the free-living, freshwater copepods that inhabit ephemeral aquatic habitats in one binational reserve known as the Chihuahuan Desert. This desertic zone is part of the large North American biogeographic region called Altiplano Mexicano, which is shared by Mexico and the United States. A joing effort was made to synthesize findings about the diversity of the copepods than inhabit this peculiar geographic area, where aquatic systems are scarce and ephemeral. It includes a taxonomic and morphological assessment of 33 copepod species and contains over forty individual drawings, and 37 plates of photographs of Scanning Electron Microscopy (SEM).

Índice

Akcnowledgments
Preface
Chapter 1. Introduction and Anatomical terminology in Copepoda
References
Chapter 2. Species of Copepoda (Calanoida, Cyclopoida, Harpacticoida) from the Chihuahuan Desert
References
Chapter 3. Geographic distribution of the freshwater copepods from the Chihuahuan Desert
References


2.
- Artículo con arbitraje
PDF
Resumen en: Español | Inglés |
Resumen en español

Los cuerpos de agua kársticos representan la característica limnológica más relevante en la península de Yucatán, México. Estos sistemas albergan especies endémicas y son la principal fuente regional epigea de agua dulce. En este trabajo se estudian la morfometría, las propiedades limnológicas básicas, así como el zooplancton y la fauna de peces en cinco sistemas acuáticos kársticos de la zona centro del estado de Quintana Roo, México (en el corazón de la zona maya). Se trató de establecer la relación entre la riqueza de especies y las propiedades morfométricas. En general se encontraron 79 especies, 64 corresponden a zooplancton y 15 a necton. Todos los sistemas estudiados son oligotróficos de alta transparencia con bajas concentraciones de nutrientes y clorofila a diferenciándose así de otros cuerpos de agua en el centro de México. Los dos sistemas kársticos estudiados fueron los cenotes y las aguadas. Ambos mostraron diferencias en las variables biológicas, físicas y químicas. Una prueba ANOVA unidireccional demostró diferencias significativas en nutrientes (nitratos, F = 61.52, p<0.001; nitritos, F=7.361, p<0.001) y conductividad (F = 497.491, p<0.001) entre los sistemas. Un análisis simple de concordancia de grupos mostró diferencias en riqueza de especies y composición de la comunidad entre los dos sistemas acuáticos. En contraste con resultados previos encontrados en el centro y sureste de México, no se encontró correlación entre riqueza de especies y parámetros morfométricos (desarrollo del área y litoral). Se conoce poco de los sistemas acuáticos kársticos de la región surcentro de la Península de Yucatán (física, química y biológicamente). De hecho, este es el primer intento por estudiar la limnología y la relación riqueza de especies y variables morfométricas de los cenotes de la región.

Resumen en inglés

Karstic water bodies represent the most relevant limnologic feature of the Yucatan Peninsula, Mexico. These systems harbor endemic species and are the main regional epigean source of freshwater. In this work, the morphometry, basic limnological features, and the zooplankton and fish fauna of five aquatic karstic systems from the central zone of Quintana Roo State, Mexico (in the heart of the Zona Maya) were surveyed. The possible relation between species richness and morphometric features was tried to be established. Overall, 79 taxa were found, 64 belong to zooplankton, and 15 to nekton. All studied systems were oligotrophic, with high transparency, and low nutrients and chlorophyll a concentration, thus differing from other water bodies in central Mexico. The two different types of karstic systems studied were the typical “cenote”, and the “aguada”. Both showed differences in biological, physical, and chemical variables. A one-way ANOVA test demonstrated significative differences in nutrients (nitrates, F = 61.52, p<0.001; nitrites, F=7.361, p<0.001) and conductivity (F = 497.491, p<0.001) among systems. A simple concordance cluster analysis showed that species richness and community composition were also different between these two types of aquatic systems. In contrast to previous results found in central and southeastern Mexico, no correlation between species richness and morphometric parameters (area and shoreline development) were found. In the south-central region of the Yucatan Peninsula, the aquatic karstic systems are poorly known (physically, chemically and biologically). In fact, this is the first approach to understand the limnology and the relation between species richness and morphometric variables of the sinkholes from the region.


3.
- Artículo de divulgación
*En hemeroteca, SIBE-Campeche, SIBE-Chetumal, SIBE-San Cristóbal, SIBE-Tapachula, SIBE-Villahermosa
Copépodos en cenotes de Quintana Roo
Cervantes Martínez, Adrián ; Gutiérrez Aguirre, Martha Angélica (coaut.) ;
Contenido en: ECOfronteras Vol. 21, no. 59 (enero-abril 2017), p. 7-7 ISSN: 2007-4549
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SIBE Campeche
12244-20 (Disponible)
Disponibles para prestamo: 1
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SIBE Chetumal
12244-50 (Disponible)
Disponibles para prestamo: 1
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SIBE Tapachula
12244-40 (Disponible)
Disponibles para prestamo: 1
Cerrar
SIBE Villahermosa
12244-60 (Disponible)
Disponibles para prestamo: 1
Nota: En hemeroteca, SIBE-Campeche, SIBE-Chetumal, SIBE-San Cristóbal, SIBE-Tapachula, SIBE-Villahermosa
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Resumen en: Español |
Resumen en español

Clasificar parece ser una necesidad humana y enfrentamos un reto monumental al intentar con los seres vivos del planeta. En este texto hablaremos de la clasificación de unos microcrustáceos llamados copépodos (su nombre en griego significa “pie en forma de remo”).


4.
- Artículo con arbitraje
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Resumen en: Inglés |
Resumen en inglés

Surveys of the anchialine crustacean fauna of the Yucatan Peninsula (YP), Mexico, have revealed the occurrence of calanoid copepods. The genus Stephos Scott, 1892, belonging to the family Stephidae is among the most frequent and widely distributed groups in anchialine caves but has not been hitherto recorded from the YP. Recent collections from an anchialine cave in an island off the northern coast of the YP yielded many specimens of a new species of Stephos. The new taxon, S. fernandoi sp. n., is described here based on male and female specimens. The new species is clearly distinguished from its congeners by the following characters: male left fifth leg with three terminal lamellae plus subdistal process, right leg with distal row of peg-like elements; female fifth leg with single long, acute apical process; genital double-somite with two rows each of 4 long spinules adjacent to operculum; legs 2-4 with articulated setae. The diversity of the genus shows regional differences; the Australia-Western Pacific region is the most diverse (eleven species), followed by the Mediterranean (seven species) and the Northeastern Atlantic (six species); only four species are known from the Northwestern Tropical Atlantic (NWTA). The morphology of the female fifth leg was examined to explore possible biogeographic trends in the genus; patterns suggest multiple colonization events in the highly diverse regions and a relatively recent radiation in the NWTA, characterized by anchialine forms. The introduction of stephid copepods in the region may be a relatively recent event derived from colonization of benthopelagic ancestral forms and subsequent invasion onto cave habitats. The new species appears to be linked to the strictly anchialine Miostephos.


5.
- Artículo con arbitraje
A new Speleophria (Copepoda, Misophrioida) from an anchialine cave of the Yucatán Peninsula with comments on the biogeography of the genus
Suárez Morales, Eduardo ; Cervantes Martínez, Adrián (coaut.) ; Gutiérrez Aguirre, Martha Angélica (coaut.) ; Iliffe, Thomas M. (coaut.) ;
Contenido en: Bulletin of Marine Science Vol. 93, no. 3 (July 2017), p. 863-878 ISSN: 0007-4977
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Resumen en: Inglés |
Resumen en inglés

Misophrioid copepods are hyperbenthic or anchialine forms whose known distributional patterns appear to have a Tethyan origin and subsequent vicariant processes. A new misophrioid copepod, Speleophria germanyanezi n. sp., collected from an anchialine cave in Cozumel Island, Yucatán Peninsula (YP), is described based on male and female specimens. This is the second report describing a misophrioid copepod species from the Yucatán Peninsula, harboring a remarkably diverse anchialine crustacean fauna. The new species is the sixth of this anchialine genus. It differs from its congeners by a combination of characters including: the armature of leg 4 exopod, 21-segmented female antennule, 24-segmented male antennule, both with moderate proximal expansion, the male with the terminal antennulary segments distinctively elongate. The fifth leg distal segment is armed with 3 elements in the female, 4 in the male. The female genital double-somite is furnished with long, slender spinules. The other members of Speleophria are distributed in Europe (Croatia, Spain), Bermuda, and Australia. Relationships among species of Speleophria have revealed amphiatlantic pairs of sister taxa. The new species has little affinity with its regionally closest congener from Bermuda; it appears to be most closely related to the Croatian S. mestrovi and could be its western Atlantic counterpart. The different misophrioid fauna between the YP and Cozumel Island and the more recent emergence of Cozumel with respect to that of the YP plate suggests either an ancestral Tethyan-related independent colonization or a relatively recent local dispersal through deep-sea crevicular habitats before emergence of these land masses.


6.
- Artículo con arbitraje
An example of how barcodes can clarify cryptic species: the case of the calanoid copepod Mastigodiaptomus albuquerquensis (Herrick)
Gutiérrez Aguirre, Martha Angélica ; Cervantes Martínez, Adrián (coaut.) ; Elías Gutiérrez, Manuel (coaut.) ;
Contenido en: PLoS ONE Vol. 9, no. 1, e85019 (January 2014), p. 1-11 ISSN: 1932-6203
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Resumen en: Inglés |
Resumen en inglés

The freshwater calanoid Mastigodiaptomus is a genus with high richness in the Americas and is composed of nine species, seven recorded in Mexico and four that are apparently endemic to small areas. Mastigodiaptomus albuquerquensis is a common, widely distributed species ranging from the southern USA to Central America. This species can be easily identified by a notable butterfly-like sclerotization on the basis of the right fifth leg of males. Nevertheless, morphological differences observed among populations throughout this species distributional range have led to the description of several related species or subspecies, such as M. albuquerquensis patzcuarensis from Lake Pátzcuaro in the Central Plateau of Mexico. Methods: Genetic results based on barcodes, morphology based on scanning electron and light microscopy images, and morphometric analyses were used to describe cryptic species within the M. albuquerquensis complex. Results: The morphological analyses coincided partially with the genetic markers, suggesting the existence of at least two sibling species: M. albuquerquensis s. str. and M. patzcuarensis. A third species was genetically separated but was morphologically indistinguishable from the M. patzcuarensis group. Conclusions: Hidden diversity has been a major problem in establishing real patterns of species distribution and genetic acquisition from megadiverse hotspots such as Mexico, where the Nearctic and the Neotropical regions of the Americas meet. Barcodes can help taxonomists to reveal and formally name these new species. Here, we describe two of three potential species highlighted by the use of barcodes: M. albuquerquensis s. str. in the northern semi-desert and M. patzcuarensis on the Central Plateau at more than 2000 m above sea level.


7.
- Artículo con arbitraje
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Resumen en: Inglés |
Resumen en inglés

Two new species of the freshwater cyclopoid genera Eucyclops are described, Eucyclops tziscao sp. n. and E. angeli sp. n. Both species belong to the serrulatus-group defined by morphological features such as: the presence of distal spinules or hair-like setae (groups N1 and N2) on frontal surface of antennal basis; the fourth leg coxa with a strong inner spine that bears dense setules on inner side, yet proximally naked (large gap) on outer side; and a 12-segmented antennule with smooth hyaline membrane on the three distalmost segments. Eucyclops tziscao sp. n. is morphologically similar to E. bondi and E. conrowae but differs from these species in having a unique combination of characters, including a caudal ramus 4.05±0.25 times as long as wide, lateral seta of Enp3P4 modified as a strong, sclerotized blunt seta, coxal spine of fourth leg with inner spinule-like setules distally, and sixth leg of males bearing a strong and long inner spine 2.3 times longer than median seta. Eucyclops angeli sp. n. can be distinguished by an unique combination of morphological features: the short caudal ramus; the long spine on the sixth antennular segment of A1; the presence of one additional group of spinules (N12’) on the caudal surface of A2; the presence of long setae in females, or short spinules in males on the lateral margin of fourth prosomite; the strong ornamentation of the intercoxal sclerite of P4, specially group I modified as long denticles; the distal modified setae of Exp3P3 and Exp3P4 in females and males; and the short lateral seta of P5. Finally, we report on a new record of E. festivus in México, and add data on morphology of the species.


8.
- Artículo con arbitraje
*En hemeroteca, SIBE-Chetumal-Samples, SIBE-Campeche-Samples, Tapachula-Samples
Diversity of freshwater copepods (Maxillopoda: Copepoda: Calanoida, Cyclopoida) from Chiapas, Mexico with a description of Mastigodiaptomus suarezmoralesi sp. nov.
Gutiérrez Aguirre, Martha Angélica (autor) ; Cervantes Martínez, Adrián (autor) ;
Contenido en: Journal of Natural History Vol. 47, no. 5-12 (2013), p. 479-498 ISSN: 0022-2933
Bibliotecas: Campeche , Chetumal , Tapachula
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SIBE Campeche
52600-20 (Disponible)
Disponibles para prestamo: 1
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SIBE Chetumal
52600-10 (Disponible)
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SIBE Tapachula
52600-30 (Disponible)
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Nota: En hemeroteca, SIBE-Chetumal-Samples, SIBE-Campeche-Samples, Tapachula-Samples
Resumen en: Inglés |
Resumen en inglés

In Mexico the knowledge of the freshwater copepod fauna is largely incomplete; after a field expedition to survey the Calanoida and Cyclopoida richness in Chiapas (southeastern Mexico), three species increase the full inventory in the country (of around 86 species). In this manuscript the first record of the genus Metacyclops in Mexico and a new record of Acanthocyclops einslei are reported. In addition, a full description of specimens of a new species assignable to the genus Mastigodiaptomus (M. suarezmoralesi sp. nov.) is presented. This research provides a full morphological description of adult males and females of the new species as well as comments on the morphology of Aglaodiaptomus clavipes. The new records were compared with previous taxonomic reports. Detailed analysis and illustration of the copepod morphology have been performed with the aid of camera lucida, light microscopy and scanning electron microscopy. Most of the species recorded show Neotropical affinity.


9.
Libro
Especies de zooplancton dulceacuícola de Cozumel / Adrián Cervantes Martínez, Martha A. Gutiérrez Aguirre, ... [et al.]
Cervantes Martínez, Adrián ; Gutiérrez Aguirre, Martha Angélica (coaut.) ; Delgado Blas, Víctor Hugo (coaut.) ; Ruiz Ramírez, Jennifer Denisse (coaut.) (1975-) ;
Cozumel, Quintana Roo, México : Universidad de Quintana Roo , 2012
Clasificación: Q/592.097267 / E8
Bibliotecas: Villahermosa
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SIBE Villahermosa
ECO050005112 (Disponible)
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10.
- Capítulo de libro con arbitraje
*Solicítelo con su bibliotecario/a
Morphology of Elaphoidella grandidieri (Guerne & Richard, 1893) (Copepoda, Harpacticoida) from Mexico with notes on fecundity in culture conditions
Gutiérrez Aguirre, Martha Angélica (autora) ; Suárez Morales, Eduardo (autor) ; Cervantes Martínez, Adrián (autor) ; Sarma, Nandini (autor) ; Sarma, S. S. S. (autor) ;
Disponible en línea
Contenido en: Studies on freshwater copepoda: a volume in honour of bernard dussart / by Danielle Defaye, Eduardo Suárez-Morales and J. Carel von Vaupel Klein (editors) ; with Victor Alekseev, ...[et al.] (advisory editors) Leiden, The Netherlands : Koninklijke Brill, c2011 p. 227-244 ISBN:900-4181-38-5 :: 978-9004181380
Bibliotecas: Chetumal
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SIBE Chetumal
51647-10 (Disponible)
Disponibles para prestamo: 1
Nota: Solicítelo con su bibliotecario/a
Resumen en inglés

Samples collected from ponds in central Mexico contained male and female specimens of the harpacticoid copepod Elaphoidella grandidieri (Guerne & Richard, 1893). Field-collected ovigerous females were transported to the laboratory where several isofemale lines were established. Cultures were established from a single female and maintained on a mono-algal diet in moderately hard water. Specimens of both sexes, particularly the less known males, were analysed morphologically and compared with records from different geographical regions. Differences among these populations are subtle and not geographically consistent. Variations were found in the relative length of setal elements and ornamentations of swimming legs 1, 2, and 4, the proportions and armature of the exopod of the female leg (P) 5, among other characters. The specimens from Mexico have 1-2 long spines near the posteroventral margin of the anal somite; this character has been described only from a North African population. Our analysis supports the notion that this widespread pantropical species shows a considerable degree of variability in various characters. Since a clonal population of this parthenogenetic species could be established, molecular techniques are recommended to evaluate this variability and determine if E. grandidieri represents a species complex with morphologically similar taxa. The finding of E. grandidieri as an harpacticoid with high reproductive rates suggests that this copepod has an outstanding potential in aquaculture.

Resumen en portugués

Des échantillons collectés dans des mares du centre du Mexique contenaient des spécimens mâles et femelles du copépode harpacticoïde Elaphoidella grandidieri (Guerne & Richard,1893). Des femelles ovigères collectées sur le terrain ont été transportées au laboratoire où plusieurs lignées isofemelles ont été établies. Les élevages ont été réalisés à partir d’une femelle unique et maintenus dans de l’eau moyennement dure avec un régime alimentaire mono-algue. Des spécimens des deux sexes, en particulier les mâles, moins connus, ont été analysés quant à leur morphologie et comparés avec les données de différentes régions géographiques. Les différences entre ces populations sont subtiles et ne sont pas cohérentes géographiquement. Des variations ont été trouvées dans la longueur relative des soies et des ornementations des pattes natatoires P1, P2 et P4, dans les proportions et l’armature de l’exopodite de la P5 femelle, parmi d’autres caractères. Les spécimens du Mexique ont 1-2 longues épines près du bord postéroventral du somite anal ; ce caractère a été décrit seulement d’une population nord-africaine. Notre analyse soutient la notion que cette espèce pantropicale largement répartie présente un degré considérable de variabilité pour différents caractères. Étant donné qu’une population clonale de cette espèce parthénogénétique pourrait être obtenue, des techniques moléculaires sont recommandées pour évaluer cette variabilité et déterminer si E. grandidieri représente un complexe d’espèces avec des taxons morphologiquement similaires. Le fait que E. grandidieri présente un taux de reproduction élevé suggère un potentiel remarquable pour l’aquaculture chez cette espèce.