RESUMO
A total of 45 flea species, assigned to 22 genera, are documented for the state of Chihuahua, Mexico. Fourteen records are new for the state, five species are recorded for the first time for the country and the state, and the number of species of Mexico is increased to 177 species. Chihuahua now has 25.4% of the total flea species registered for the country. A new species of the genus Strepsylla is described from specimens from the Flora and Fauna Protection Area Cerro del Mohinora, in the northwestern part of the Sierra Madre Occidental. Strepsylla mohinora sp. nov. is included in a published taxonomic key for the species of Strepsylla.
Assuntos
Sifonápteros , Animais , MéxicoRESUMO
A new species of Dactylopsylla Jordan, parasites of Geomyidae rodents from Chihuahua, is described and illustrated as D. samalayucae n. sp. This species is compared with their morphologically closest relatives. Males are characterized by the shape of the upper lobe of the inmovable and movable process, the shape and chaetotaxy of the distal arm of sternum IX and the shape of the crochet; and females by the contour of the distal margin of sternum VII. The geographical distribution of Dactylopsylla is extended to the Chihuahuan desert in Mexico as D. samalayucae n. sp. is reported from south of the Natural Protected Area Mdanos de Samalayuca (MS). A recent key to Dactylopsylla species is updated with inclusion of the new species.
Assuntos
Sifonápteros , Animais , Feminino , Jordânia , Masculino , MéxicoRESUMO
The Flora and Fauna Protection Area (Área de Protección de Flora y Fauna-ÁPFF) Cerro del Mohinora, is the highest mountain in northern Mexico, reaching an elevation of 3,300 meters. It constitutes one of the last high-elevation islands of alpine and subalpine vegetation known in the Sierra Madre Occidental, in the extreme southwestern part of Chihuahua. The ÁPFF Cerro del Mohinora is located near the state border and limits with Durango and Sinaloa. This type of ecosystem located at high altitudes is in danger of disappearing since only 1% or less of its original extension remains; it is considered a refuge for species with boreal affinities (McDonald et al. 2011).
Assuntos
Musaranhos , Animais , Ecossistema , México , PrevalênciaRESUMO
A new flea species, Kohlsia misantlensis, is described from the central mountains of Veracruz, Mexico. The hosts of this new species are the Mexican deer mouse Peromyscus mexicanus (Saussure, 1860) (Mammalia: Rodentia:Muridae) and the Mexican spiny pocket mouse Heteromys sp. (Heteromyidae). This flea species is easily recognized by the great development of sternite VIII with a tuft of seven long bristles near the apex. The new species is included in a taxonomic key for the species of genus Kohlsia occurring in Mexico.
Assuntos
Sifonápteros , Animais , Mamíferos , México , Muridae , PeromyscusRESUMO
Studies of abundance and distribution of organisms are fundamental to ecology. The identity of host species is known to be one of the major factors influencing ectoparasitic flea abundance, but explanations are still needed regarding how host taxa influence abundance parameters of different flea species. This study was carried out at La Malinche National Park (LMNP), Tlaxcala, Mexico, where previously 11 flea species had been recorded on 8 host species. Our aims were to list micromammal flea species, to determine flea infection parameters [flea prevalence (FP) and flea mean abundance (FMA)] and to analyse the influence of host species on these parameters. A total of 16 species of fleas were identified from 1178 fleas collected from 14 species of 1274 micromammals captured with Sherman® traps from March 2014 to December 2015 in 18 sites at LMNP. Some host species influence FP and FMA, in particular, Microtus mexicanus and Peromyscus melanotis showed particularly higher infection values than other host species. Plusaetis aztecus and Plusaetis sibynus were identified as the most abundant flea species.
Assuntos
Infestações por Pulgas/veterinária , Interações Hospedeiro-Parasita , Doenças dos Roedores/epidemiologia , Roedores , Sifonápteros/fisiologia , Animais , Infestações por Pulgas/epidemiologia , Infestações por Pulgas/parasitologia , México/epidemiologia , Prevalência , Doenças dos Roedores/parasitologiaRESUMO
A redescription of the genus Phalacropsylla Rothschild is provided. Six species are recognized: Phalacropsylla allos Wagner, P. hamata Tipton and Mendez, P. morlani Eads and Campos, P. nivalis Barrera and Traub, P. oregonensis Lewis and Maser, and P. paradisea Rothschild. Phalacropsylla hamata is designated herein as a junior synonym of P. paradisea. The distribution of P. paradisea is more extensive than previously thought, extending from Arizona through southern Colorado, into New Mexico, Texas, and northern Mexico (State of Nuevo León). It is the least host-specific of all species of Phalacropsylla, occurring on 13 different host species including cricetid, heteromyid, murid, and sciurid rodents and several carnivores, although it most commonly occurs on Neotoma albigula Hartley. The range of P. oregonensis is expanded from eastern Oregon to southeastern Idaho. Numerous records are documented for the most common and ubiquitous species, P. allos, which is found in British Columbia, central to northern California, Idaho, Montana, Colorado, Nevada, Utah, Wyoming, Arizona, and New Mexico. Neotoma cinerea Ord is the principal host of P. allos. Phalacropsylla allos is a winter flea west of the Rocky Mountains, but it has been reported in warmer months of the year on the eastern slopes of the Rocky Mountains in Larimer County, Colorado. A distribution map and key are provided for all species in the genus Phalacropsylla.
RESUMO
As a part of an ongoing project to inventory the helminth parasites of rodents in Mexico, 85 specimens of 2 families of rodents were collected from the Mexican Plateau: Cricetidae ( Neotoma sp., Neotoma leucodon , Onychomys arenicola , Peromyscus sp., Peromyscus eremicus , and Reithrodontomys sp.) and Heteromyidae ( Chaetodipus sp., Chaetodipus eremicus , Chaetodipus hispidus , Dipodomys merriami , Dipodomys ordii , Dipodomys ornatus, Dipodomys spectabilis , Liomys irroratus , Perognathus sp., and Perognathus flavus ). A total of 13 taxa of helminths were found: Heteromyoxyuris longejector, Heteromyoxyuris otomii, Heteromyoxyuris sp., Onchocercidae gen. sp. 1 and sp. 2, Physalopteridae gen. sp., Protospirura dipodomis, Pterygodermatites dipodomis, Subulura sp., Syphacia sp., Trichuris dipodomis, Vexillata liomyos, and Vexillata armande. The highest species richness was recorded in D. merriami (7 taxa). This study is the first report of nematodes from O. arenicola (Physalopteridae gen. sp.) and C. eremicus (H. longejector) and for V. liomyos from D. merriami . All reports of these species of nematodes represent new collection localities in Mexico.
Assuntos
Arvicolinae/parasitologia , Nematoides/isolamento & purificação , Infecções por Nematoides/veterinária , Doenças dos Roedores/parasitologia , Animais , Dipodomys/parasitologia , México/epidemiologia , Nematoides/classificação , Nematoides/crescimento & desenvolvimento , Infecções por Nematoides/epidemiologia , Infecções por Nematoides/parasitologia , Prevalência , Doenças dos Roedores/epidemiologia , RoedoresRESUMO
Six genera of the tribe Phalacropsyllini were analysed based on molecular (18S rDNA and 28S rDNA) and morphological characters, using maximum parsimony analyses and Bayesian inference. The results support the paraphyly of the tribe Phalacropsyllini, as shown in a previous study based only on molecular characters. Three main clades were identified: one includes the genera Neopsylla, Epitedia, Catallagia, and Delotelis; another includes Phalacropsylla and Strepsylla; and a third one includes only Meringis. In order to propose a phylogenetic classification we recognize three tribes, transferring Epitedia, Catallagia and Delotelis to Neopsyllini; keeping Phalacropsyllini only for Phalacropsylla and Strepsylla; and proposing the new tribe Meringini for Meringis.
Assuntos
Filogenia , Sifonápteros/classificação , Sifonápteros/genética , Distribuição Animal , Estruturas Animais/anatomia & histologia , Animais , DNA Ribossômico/genética , Feminino , Masculino , Dados de Sequência Molecular , Roedores/classificação , Roedores/parasitologia , Sifonápteros/anatomia & histologia , Sifonápteros/fisiologiaRESUMO
The genus Strepsylla Traub is redescribed and compared with the other genera of the tribe Phalacropsyllini. Thirteen recognized species are distributed in Mexico, Guatemala, Honduras, Costa Rica, and Panama, where they parasitize small rodents, especially mice of the genus Peromyscus. Five new species are reported and described (Strepsylla ixtlanensis n. sp., Strepsylla longicauda n. sp., Strepsylla queretana n. sp., Strepsylla tezontli n. sp., and Strepsylla vargasi n. sp.). Keys for the genera of the tribe and for the species of Strepsylla are included, and relevant notes for each species are given. A cladistic analysis of Strepsylla led to the recognition of 2 clades: one includes S. mina, S. villai, and S. tezontli, which are distributed along the Trans-Mexico Volcanic Belt; and the other includes the remaining species, which have a northern Mexico distribution.
Assuntos
Ectoparasitoses/veterinária , Peromyscus/parasitologia , Filogenia , Doenças dos Roedores/parasitologia , Sifonápteros/classificação , Animais , Ectoparasitoses/parasitologia , Feminino , Lagomorpha , Masculino , México , Roedores , Sifonápteros/anatomia & histologia , Sifonápteros/genéticaRESUMO
We report the first record of ectoparasites from Nelson's woodrat, Neotoma nelsoni, a rare, endemic mammal of east-central Mexico. We also describe a new flea species of Anomiopsyllus (A. perontesis n. sp.), which presents a complete row of bristles on sternum IX and 3 blunt spines on movable process; provide a new country record for the flea Stenistomera alpina (Baker, 1985); and report a new host record for the flea Echidnophaga gallinacea (Westwood, 1875). A taxonomic key for the new species is included.