Mamíferos silvestres de la Reserva Ecológica del Pedregal de San Ángel en Ciudad Universitaria, Universidad Nacional Autónoma de México, México, D. F.

Hortelano-Moncada, Yolanda; Cervantes, Fernando A.; Trejo-Ortiz, Aída

doi:10.22201/ib.20078706e.2009.002.614

Cited by 14 publications

(9 citation statements)

References 3 publications

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“…The Mexican red-bellied squirrel ( Sciurus aureogaster ) is a tropical tree squirrel native to the southeastern and southwestern coastal plains of Mexico and southwestern Guatemala. Its original distribution did not include our study area until 1999, when this squirrel colonized several areas of central Mexico [61], possibly as a result of the use of exotic trees for reforestation [62]. Unlike the introduced population of this tree squirrel in Florida, the Mexican red-bellied squirrels of central Mexico commonly explore the ground in search for food [62,63].…”

Section: Methodsmentioning

confidence: 99%

This town ain't big enough for both of us…or is it? Spatial co-occurrence between exotic and native species in an urban reserve

et al. 2019

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Exotic species pose a threat to most ecosystems because of their potential to establish negative interactions with native biota. However, exotic species can also offer resources to native species, especially within highly modified environments such as urban ecosystems. We studied 17 exotic-native pairs of species with the potential to compete with one another, or in which one of the species could offer resources to the other, in an urban ecological reserve located within Mexico City. We used two-species occupancy models to analyze the potential association between the presence of the exotic species and the spatial distribution of the native species, as well as to assess if these species tend to avoid each other (negative spatial interaction) or to co-occur more often than expected under the hypothesis of independent occurrences (positive spatial interaction). Our results revealed few cases in which the exotic species influenced occupancy of the native species, and these spatial interactions were mainly positive, indicated by the fact that the occupancy of the native species was usually higher when the exotic species was also present. Seven of the eight observed non-independent patterns of co-occurrence were evident during the dry months of the year, when resources become scarce for most species. Our results also demonstrate that the observed patterns of species co-occurrence depend on the distance to the nearest urban structure and the amount of herb, shrub, and tree cover, indicating that these habitat features influence whether native species avoid or co-occur with exotic species. Our study represents an important contribution to the understanding of temporal dynamics in the co-occurrence between exotic and native species within urban ecological reserves.

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Section: Methodsmentioning

confidence: 99%

This town ain't big enough for both of us…or is it? Spatial co-occurrence between exotic and native species in an urban reserve

et al. 2019

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“…2) The “Reserva Ecológica del Pedregal de San Angel (REPSA)” ecologic reserve belongs to the Universidad Nacional Autónoma de México (UNAM) and is located in Southeastern Mexico City. The reserve covers over 237.3 ha of volcanic rock terrain, and about 39 wild mammal species have been reported there (Hortelano-Moncada et al 2009). Animal samples from the REPSA were collected with permit REPSA/410/2009 issued by the Universidad Nacional Autónoma de México (UN-AM).…”

Section: Methodsmentioning

confidence: 99%

Endemic Orthopoxvirus Circulating in Procyonids in Mexico

Gallardo-Romero

Aréchiga-Ceballos

Emerson³

et al. 2016

Journal of Wildlife Diseases

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Limited serosurveillance studies suggested that orthopoxviruses (OPXV) are widespread in the US (e.g., Raccoonpox virus, Skunkpox virus, Volepox virus) and Brazil (Vaccinia virus); however, their animal reservoir(s) remain unconfirmed. Mexican mammal diversity includes several species related to those in which evidence for OPXV infections has been found (Oryzomys, Peromyscus, Microtus, and Procyonidae). The presence of these groups of mammals in Mexico and the evidence of their possible involvement in the maintenance of OPXV in nature suggest the same or similar OPXV are circulating in Mexico. We tested 201 sera from 129 procyonids via modified enzyme-linked immunosorbent assay (ELISA) and Western blot (WB) to estimate OPXV antibody prevalence in these animals. We detected a prevalence of 16.67% in Nasua narica (white-nosed coati), 35% in Procyon lotor (raccoon), and 30.4% in Bassariscus astutus (ring-tailed cat) when tested by either ELISA or WB. Western blot results presented protein bands consistent with the size of some OPXV immunodominant bands (14, 18, 32, 36, and 62 kDa). These results support the hypothesis that OPXV circulate in at least three genera of Procyonidae in Central and Southeast Mexico.

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“…We observed that rodents played a relatively minor role in seed removal, contrary to findings in more pristine arid environments [21]. The reason for this may be that some specialist granivore rodents have been locally extirpated, as is the case of the mouse Lyomis irroratus (Gray, 1868) [50][51][52][53]. Additionally, we speculate that native rodents could be displaced by exotic species such as Rattus rattus (Linnaeus, 1758), and Mus musculus Linnaeus, 1758.…”

Section: Discussionmentioning

confidence: 94%

Who removes seeds in a heavily urbanized area?

Hueso-Olaya

Rocha‐Ortega

Coronel‐Arellano

et al. 2022

Preprint

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In urban landscapes, granivores play a key ecosystem service: they contribute to the establishment of plants and thereby increase the probability of vegetal community recovery. It is therefore a priority to determine how and by whom seeds are removed, which seeds are removed and where they are removed. Our objective here was to determine the removal patterns in three core zones of an urban reserve, three urban parks, and three peri-urban parks, all in and around Mexico City. We performed a selective exclusion experiment with treatments for each type of seed consumer (ants, birds, and rodents) and seeds of nine plant species. Ants were the most important granivores in terms of seed removal (especially small seeds), followed by rodents and birds. Seeds of the native plants Passiflora subpeltata, Pittocaulon praecox and Opuntia joconostle had higher removal rates than other exotic and cosmopolitan species. The urban reserve had higher rates of seed predation compared to the urban and peri-urban parks. Thus, ants are pivotal in keeping seed removal and vegetation communities. We propose a series of measures to promote the ecosystem function of seed removal and increase plant diversity in these different urban patches.

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Mamíferos silvestres de la Reserva Ecológica del Pedregal de San Ángel en Ciudad Universitaria, Universidad Nacional Autónoma de México, México, D. F.

Cited by 14 publications

References 3 publications

This town ain't big enough for both of us…or is it? Spatial co-occurrence between exotic and native species in an urban reserve

This town ain't big enough for both of us…or is it? Spatial co-occurrence between exotic and native species in an urban reserve

Endemic Orthopoxvirus Circulating in Procyonids in Mexico

Who removes seeds in a heavily urbanized area?

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