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577 resultados encontrados para: TEMA: Taxonomía animal
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1.
Libro
Manual de identificación de aves residentes y migratorias: Área de Protección de Flora y Fauna Metzabok / textos: Manuela Morales Herández ; ilustraciones: José Guadalupe Coutiño Monzón
Morales Herández, Manuela ;
Distrito Federal, México : Comisión Nacional de Áreas Naturales Protegidas. Área de Protección de Flora y Fauna Metzabok , s.f.
Clasificación: C CH/598.2097275 / M6
Bibliotecas: San Cristóbal
Cerrar
SIBE San Cristóbal
ECO010018650 (Disponible)
Disponibles para prestamo: 1
Resumen en: Español |
Resumen en español

Contar con una gran biodiversidad en nuestro país, nos enorgullece como mexicanos, preservemos nuestras riquezas naturales y culturales protegiendo las áreas naturales protegidas, donde habitan maravillosos seres vivos, ya que la transformación de su ambiente y su comercio es la principal amenaza a su supervivencia.


2.
Libro
Sistemática zoológica práctica / Manuel Balcázar Lara
Balcázar Lara, Manuel Artemio ;
Distrito Federal, México : Universidad Nacional Autónoma de México. Instituto de Biología. Departamento de Zoología , s.f.
Clasificación: 591 / B3
Bibliotecas: Chetumal
Cerrar
SIBE Chetumal
QAA002628 (Disponible)
Disponibles para prestamo: 1

3.
Artículo
*Solicítelo con su bibliotecario/a
A new species of Travisia (Annelida, Travisiidae) from Campos Basin, Brazil
Rizzo, Alexandra Elaine (autora) ; Salazar Vallejo, Sergio I. (autor) ;
Contenido en: Studies on Neotropical Fauna and Environment (May 2020), páginas 1-9 ISSN: 0165-0521
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

Travisia Johnston, 1840 is the only genus of the family Travisiidae Hartmann-Schröder, 1971. Travisiid species have body relatively short, papillated, fusiform, often tapered anteriorly and posteriorly, and swollen medially. They are found mainly in deep-sea sediments. Several faunistic accounts from different locations in the Brazilian coast have included records of Travisia species that need to be reassessed. The aim of this study was to describe Travisia araciae n. sp., a new species from Campos Basin, off Rio de Janeiro, Southern Brazil. The new species differs from other similar species by having 23 pairs of branchiae from chaetiger 2, and interramal pores from chaetiger 1. An updated key to identification for all species in the genus is also included.


4.
Artículo
*Solicítelo con su bibliotecario/a
Accessing cryptic diversity in Neotropical rattlesnakes (Serpentes: Viperidae: Crotalus) with the description of two new species
Carbajal Márquez, Rubén Alonso (autor) ; Cedeño-Vázquez, J.R. (autor) ; Martínez Arce, Arely (autora) ; Neri Castro, Edgar (autor) ; Machkour M'Rabet, Salima (autora) ;
Contenido en: Zootaxa Vol. 4729, no. 4 (January 2020), p. 451-481 ISSN: 1175-5334
Nota: Solicítelo con su bibliotecario/a
Resumen en español

Los miembros del complejo de especies Crotalus durissus tienen una amplia distribución desde México hasta Argentina, principalmente en zonas con bosque tropical deciduo. Aunque se reconocen actualmente cuatro especies (C. culminatus, C. durissus, C. simus y C. tzabcan), los límites entre estas no son claros. Estudios genéticos previos sugieren que C. durissus y C. simus pueden ser parafiléticos y que al menos una especie críptica puede estar presente. Analizamos una secuencia de 2596 pares de bases de ADN provenientes de tres genes mitocondriales y uno nuclear, para inferir las relaciones filogenéticas en las especies de víboras de cascabel neotropicales. Por otro lado, se examinaron especímenes de museo, silvestres y ejemplares en cautiverio para analizar caracteres morfológicos. Nuestros resultados sugieren que la taxonomía actual del grupo de especies Crotalus durissus no refleja su historia evolutiva. Los resultados obtenidos muestran un fuerte apoyo para cinco linajes independientes en Crotalus simus (sensu lato) con evidencia genética y morfológica para tres taxones previamente reconocidos y dos especies nuevas, y tres linajes en C. durissus, que representan hipótesis de especies para ser probadas con evidencia adicional. También encontramos apoyo para mantener a C. totonacus en el complejo de especies Crotalus molossus. Sugerimos cambios taxonómicos conservadores para el complejo y especies relacionadas, pero se necesita más evidencia (e.g., morfología, ecología y composición bioquímica del veneno), para aclarar las relaciones entre especies.

Resumen en inglés

Members of the Crotalus durissus species complex are widely distributed from Mexico to Argentina in areas with mainly seasonally dry tropical deciduous forest. Although four species (C. culminatus, C. durissus, C. simus and C. tzabcan) are currently recognized, species limits remain to be tested. Previous genetic studies suggest that C. durissus and C. simus may be paraphyletic and that at least one cryptic species may be present. We analyzed 2596 bp of DNA sequence data from three mitochondrial and one nuclear gene to infer phylogenetic relationships in the Neotropical rattlesnakes. We also examined museum and wild specimens as well as captive animals to analyze morphological characters. Our results suggest that current taxonomy of the Crotalus durissus species complex does not reflect evolutionary history. We found strong support for five independent lineages within Crotalus simus (sensu lato), with genetic and morphological evidence for three previously recognized taxa and two new species, as well as three major lineages within C. durissus that each represent species hypothesis to be tested with additional evidence. We also found support to retain C. totonacus in the Crotalus molossus species complex. We suggest conservative taxonomic changes to the complex and related species, but more evidence is needed (e.g., morphology, ecology and venom composition) to clarify relationships among species.


5.
Artículo
Una nueva especie de halicyclops (Copepoda, cyclopoida, halicyclopinae) de un sistema estuarino de la costa caribe de Colombia
Fuentes Reinés, Juan Manuel (autor) ; Suárez Morales, Eduardo (autor) ;
Contenido en: Acta Biologica Colombiana Vol. 25, no. 1 (January-April 2020), p. 14-21 ISSN: 1900-1649
PDF
Resumen en: Español | Inglés |
Resumen en español

Muestras de plancton obtenidas de la Ciénaga Grande de Santa Marta, un extenso sistema estuarino en el norte de Colombia, produjeron especímenes machos y hembras de una especie no descrita del género Halicyclops. Los copépodos de la familia Cyclopidae son dominantes en los hábitats de agua dulce y transicionales. Los miembros de la subfamilia Halicyclopinae son predominantemente de hábitats salobres, con algunas especies de agua dulce. La nueva especie aquí descrita es asignable al grupo de especies denominado “F” de Halicyclops (sensu Pesce, 2018) con una fórmula de espinas exopodales (P1–4) = 2333. Actualmente, este grupo contiene cinco especies y una subespecie. Halicyclops gutierrezi sp. n. puede distinguirse de sus congéneres conocidos por la ausencia de un verdadero opérculo anal, la longitud relativa de las setas de la P5 de la hembra y del macho, la longitud relativa de las setas internas de P4EXP3 y por detalles de la anténula del macho. Esta es la quinta especie de Halicyclops registrada en Colombia y la primera del grupo “F” de Halicyclops descrita en la cuenca del Caribe. Con la adición de H. gutierrezi sp. n., aumentó a 20 el número de especies del género que se conocen en la región Neotropical. Se proporciona una clave para la identificación de las especies del género registradas en Colombia.

Resumen en inglés

Plankton samples obtained from the Ciénaga Grande de Santa Marta, an extensive estuarine system in northern Colombia, yielded adult male and female specimens of an undescribed halicyclopine cyclopid copepod of the genus Halicyclops. Cyclopid copepods are frequently found in freshwater and transitional habitats. Members of the subfamily Halicyclopinae are chiefly brackish water forms with a few freshwater species. The new species described herein is assignable to the group of species “F” of Halicyclops (sensu Pesce, 2018) with a 2333 exopodal spine formula. Currently, this group contains five species and one subspecies. Halicyclops gutierrezi sp. n. can be distinguished from its known congeners by the absence of an anal operculum, the relative length of setae of the female and male P5, the relative length of the inner setae of P4EXP3, and details of the male antennule. This is the fifth species of Halicyclops recorded from Colombia and the first one of Halicyclops group “F” described from the Caribbean region. With the addition of H. gutierrezi sp. n., the number of species of the genus known from the Neotropics increased to 20. A key to the species of the genus recorded in Colombia is also provided.


6.
Artículo
Reinstatement of species belonging Marphysa sanguinea complex (Annelida: Eunicidae) and description of new species from the mid-Pacific Ocean and the Adriatic Sea
Molina Acevedo, Isabel Cristina (autora) ; Idris, Izwandy (autora) ;
Disponible en línea
Contenido en: Zootaxa Volumen 4816, número 1 (2020), páginas 001–048 ISSN: 1175-5334
PDF
Resumen en: Inglés |
Resumen en inglés

Marphysa sanguinea Montagu, 1813, the type species of genus Marphysa, was described with few characteristics and subsequently reported in tropical and temperate waters as a cosmopolitan species. Recent comparative studies have shown that M. sanguinea has a limited distribution to the Northeast Atlantic. As a result, species from the tropical and subtropical zones are now being redescribed as new species. However, this issue is not completely resolved because of the taxonomic status of seven nominal species, considered as junior synonymies of M. sanguinea. Herein, we examined the type and additional materials from five species in synonymy M. sanguinea and performed a compared analysis with the neotype of M. sanguinea. Additionally, we reviewed specimens from two localities in the mid-Pacific Ocean and the Adriatic Sea, where M. sanguinea was previously reported. As a result of this study, three species were reinstated (M. californica Moore, 1909, M. leidii de Quatrefages, 1866, and M. parishii Baird, 1869) and two subspecies, are now raised to species level (M. americana n. status and M. brevibranchiata n. status). In addition, two new species from Hawaii and Croatia are described: M. baileybrockae n. sp. and M. birgeri n. sp., respectively. Morphological comparisons with most species currently assigned to the M. sanguinea complex are presented. This work provides more support for rejecting the hypothesis that M. sanguinea is a cosmopolitan species and we encourage the use of novel and traditional morphological characters to differentiate species within the complex.


7.
Artículo
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Revision of Leocrates kinberg, 1866 and Leocratides ehlers, 1908 (Annelida, Errantia, Hesionidae)
Salazar Vallejo, Sergio I. (autor) ;
Contenido en: Zootaxa Vol. 4739, no. 1 (February 2020), p. 1-114 ISSN: 1175-5334
Nota: Solicítelo con su bibliotecario/a
Resumen en: Inglés |
Resumen en inglés

Leocrates Kinberg, 1866 and Leocratides Ehlers, 1908 are two genera of hesionid errant annelids (Hesionidae, Hesioninae) whose species have 16 chaetigers (21 segments). Leocrates species are free living in rocky or mixed bottoms, whereas Leocratides species are usually symbiotic with hexactinellid sponges. Marian Pettibone revised both genera as part of the R/V Siboga Expedition monographs 50 years ago, and most of her ideas have remained unchallenged regarding synonymy for genera and species. For example, she included three genera as junior synonyms of Leocrates: Lamprophaes Grube, 1867, Tyrrhena Claparède, 1868, and Dalhousia McIntosh, 1885, and from 21 nominal species, she regarded only eight as valid. In this revision, all material available was studied, and different morphological patterns were noted in nuchal organs lobes, pharynx armature, and chaetal features. Leocratides species belong to a single pattern; however, in Leocrates several patterns were detected. Three patterns are present for nuchal organs lobes: barely projected posteriorly (horizontal C-shaped), markedly projected posteriorly (U-shaped), and with lateral transverse projections (L-shaped). In the pharynx, upper jaws were noted as single, fang-shaped, or as double, T-shaped structures, whereas the lower jaw can be single, fang-shaped, or a transverse plate. Neurochaetal blades can be bidentate with guards approaching subdistal tooth, unidentate without guards, or with guards hypertrophied projected beyond distal tooth.

The combinations of these features are regarded as different genera and consequently, Leocrates is restricted (including Tyrrhena), but Dalhousia, and Lamprophaea (name corrected) are reinstated, and three new genus-group names are proposed: Paradalhousia n. gen., Paralamprophaea n. gen., and Paraleocrates n. gen. Further, the standardization of morphological features allowed several modifications and the recognition of novelties. Thus, four type species were redescribed, four others were reinstated, 10 were newly combined, and 18 from different World localities are described as new. The new species are Lamprophaea cornuta n. sp. from the French Polynesia, L. ockeri n. sp. from the Hawaiian Islands, L. paulayi n. sp. from the Red Sea, L. pettiboneae n. sp. from the Marshall Islands, L. pleijeli n. sp. from La Réunion, L. poupini n. sp. from the French Polynesia, Leocrates ahlfeldae n. sp. from India, L. harrisae n. sp. from the Revillagigedo Islands, L. mooreae n. sp. from New Caledonia, L. reishi n. sp. from the Marshall Islands, L. rizzoae n. sp. from the Seychelles Islands, L. rousei n. sp. from Papua New Guinea, L. seidae n. sp. from the French Polynesia, Leocratides jimii n. sp. from Madagascar, Paralamprophaea bemisae n. sp. from the Maldives, P. crosnieri n. sp. from Madagascar, P. leslieae n. sp. from Kiribati, and P. meyeri n. sp. from the French Polynesia. However, Leocrates japonicus Gustafson, 1930 is a nomen nudum. Keys are included for identifying all hesioninae genera, and for all species in all the included genera.


8.
Tesis - Doctorado
Taxonomía y biología de dos especies de arañas del género Phonotimpus Gertsch & David, 1940 (Araneae: Phrurolithidae) / David Chamé Vázquez
Chamé Vázquez, David (autor) ; Ibarra Núñez, Guillermo (director) ; Dor Roques, Ariane Liliane Jeanne (asesora) ; Jiménez Jiménez, María Luisa (asesora) ; Solís Montero, Lislie (asesora) ;
Tapachula, Chiapas, México : El Colegio de la Frontera Sur , 2020
Clasificación: TE/595.44097275 / C43
Bibliotecas: Tapachula
Cerrar
SIBE Tapachula
ECO020013962 (Disponible)
Disponibles para prestamo: 1
PDF
Índice | Resumen en: Español |
Resumen en español

Las arañas de la familia Phrurolithidae son muy pequeñas (de 2 a 3 mm) y de coloraciones crípticas que usualmente deambulan debajo de rocas y entre la hojarasca. La información taxonómica que se tiene de ellas en México es limitada, pues se considera que existen muchas especies por describir; lo que se conoce sobre su biología es aún más exiguo. En el Volcán Tacaná (Chiapas) se encontraron dos especies de Phrurolithidae que son comunes entre las de arañas de la hojarasca, las cuales no habían sido objeto de estudio hasta ahora. En este trabajo se abordaron varios aspectos sobre ellas, como su taxonomía, la fenología, el cuidado maternal y el periodo de gestación. En el primer manuscrito se describieron a las dos especies como nuevas para la ciencia pues tenían características particulares. Ambas especies fueron asignadas al género Phonotimpus por compartir una serie de características con dicho género, una fue denominada Phonotimpus pennimani y la otra Phonotimpus talquian. También, se incluyó la re-descripción de la hembra de P. separatus (especie tipo del género) con la que se profundizó en la correcta separación del género. En el segundo manuscrito se demuestra que las dos especies se encuentran presentes casi todo el año (juveniles y adultos), por lo que ambas son euricronas sin un periodo fijo de reproducción. Los estadios juveniles y penúltimos de ambas especies construyen un refugio temporal cuando realizan la muda. Además, las dos especies exhiben dimorfismo sexual y ambas utilizan la emboscada para capturar a sus presas (colémbolos). Las hembras de las dos especies depositan sus huevos en ovisacos con forma de disco y les proveen cuidado. Phonotimmpus pennimani, y probablemente P. talquian, son especies iteróparas pues producen hasta cuatro ovisacos. Por último, se reportó el parasitismo de huevos de P. pennimani por una avispa del género Idris sp. (Platygastridae).

Índice

Dedicatoria
Agradecimientos
Resumen
Palabras Claves
Capítulo I. Introducción
Antecedentes
Las arañas errantes
Particularidades de la familia Phrurolithidae
Hábitat y fenología
Reproducción
Cuidado parental
Justificación
Objetivo General
Objetivos específicos
Métodos
Revisión taxonómica
Captura de ejemplares y mantenimiento en laboratorio
Alimentación y ciclo de vida
Reproducción
Capítulo II Redescription of Phonotimpus separatus Gertsch & Davis, 1940 (Araneae: Phrurolithidae) and description of two new species of Phonotimpus from Mexico
Capítulo III. Life history of the neotropical spiders Phonotimpus pennimani and P. talquian (Araneae: Phurolithidae)
Capítulo IV. Conclusiones
Literatura Citada


9.
Artículo
Water mite diversity (Acariformes: Prostigmata: Parasitengonina: Hydrachnidiae) from karst ecosystems in southern of Mexico: a barcoding approach
Montes Ortiz, Lucia (autora) ; Elías Gutiérrez, Manuel (autor) ;
Disponible en línea
Contenido en: Diversity Volumen 12, número 9, 329 (August 2020), p. 1-16 ISSN: 1424-2818
PDF
Resumen en: Inglés |
Resumen en inglés

Water mites represent the most diverse and abundant group of Arachnida in freshwater ecosystems, with about 6000 species described; however, it is estimated that this number represents only 30% of the total expected species. Despite having strong biotic interactions with their community and having the potential to be exceptional bioindicators, they are frequently excluded from studies of water quality or ecology, due to actual and perceived difficulties of taxonomic identification in this group. The objective of this study is to use the variations in the sequences of the mitochondrial cytochrome oxidase subunit I (COI), also known as the DNA barcodes region, as a tool to assess the diversity of water mites at 24 sites in the Yucatan Peninsula of Mexico. We found 77 genetic groups or putative species corresponding to 18 genera: Arrenurus, Atractides, Centrolimnesia, Eylais, Geayia, Hydrodroma, Hydryphantes, Hygrobates, Koenikea, Krendowskia, Limnesia, Limnochares, Mamersellides, Mideopsis, Neumania, Piona, Torrenticola, and Unionicola. This was significant, since there are only 35 species described for this region. Furthermore, this molecular information has allowed us to infer that there are characteristic assemblies per site. These data will facilitate the incorporation of water mites in different studies while the curatorial work continues to assign a Linnaean name.


10.
Artículo
PDF
Resumen en: Inglés |
Resumen en inglés

The Brachionus plicatilis complex represents the most studied group of rotifers, although the systematics of the species complex has not been completely clarified. Many studies have been conducted trying to explore the diversity within the complex, leading to the recognition of three major morphotypes: large (L), small-medium (SM), and small (SS). Currently six species have been described and classified under these types and another nine taxa have been identified but not formally described. Within the L group, three species have been officially described [B. plicatilis s.s. (L1), B. manjavacas (L2), and B. asplanchnoidis (L3)], while a formal description of L4, unofficially known as B. ‘Nevada’, is still lacking. In the present study, a new species, Brachionus paranguensis sp. nov., is formally described and presented as a repre ZooKeys sentative of the L4 clade. The species has been named after a high altitude saline crater lake from Central Mexico, where the specimens were collected. An integrated approach using DNA taxonomy through COI and ITS1 markers, morphology, and ecology was used to confirm the identity of the new species.