Wyniki wyszukiwania - AGRO

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Triceratostris [Orchidaceae, Spiranthinae], a new genus from Mexico

100%

Szlachetko D. L.

Fragmenta Floristica et Geobotanica

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1996

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tom 41

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nr 2

2

Coccidia in passerines from the Nevado de Toluca National Park, Mexico

86%

Medina J. P., Salgado-Miranda C., Garcia-Conejo M., Galindo-Sanchez K. P., Mejia-Garcia C. J., Janczur M. K., Gomes Lopes C. W., Berto B. P., Soriano-Vargas E.

Acta Parasitologica

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2015

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tom 60

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nr 1

3

The discovery of acanthocephalans parasitizing chaetognaths

86%

Lozano-Cobo H., Gomez-Gutierrez J., Franco-Gordo C., Prado-Rosas M. C. G.

Acta Parasitologica

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2017

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tom 62

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nr 2

4

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A roe deer from the Pliocene of Hidalgo, central Mexico

86%

Jimenez-Hidalgo E., Bravo-Cuevas V. M.

Acta Palaeontologica Polonica

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2015

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tom 60

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nr 4

Mexican Pliocene cervids are very poorly known. We report on new fossil material of the roe deer Capreolus constantini recovered from the Pliocene Atotonilco El Grande Formation of Santa Maria Amajac, Hidalgo (central Mexico). The specimens were collected from a series of layers of friable to moderately indurated polymictic conglomerate supported by a sandstone-tuffaceous-calcareous matrix. This species was formerly known only from the late Pliocene of Udunga, Russia, thus implying a dispersal event to North America around 4.0 Ma. This cervid is one of the very small number of mammals recorded from the poorly sampled Pliocene temperate deposits of Mexico.

5

Analysis of bovine tuberculosis transmission in Jalisco, Mexico through whole-genome sequencing

86%

Verdugo Escarcega D. A., Perea Razo C. A., Gonzalez Ruiz S., Sosa Gallegos S. L., Suazo F. M., Alarcon G. J. C.

Journal of Veterinary Research

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2020

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tom 64

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nr 1

6

Pseudogonaphodiellus zdzislawae, new genus and new species of Mexican Aphodiini (Scarabaeoidea: Aphodiidae)

86%

Dellacasa M., Gordon R. D., Dellacasa G.

Acta Zoologica Cracoviensia. Ser.B Invertebrata

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2007

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tom 50B

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nr 2

7

A new species of Physogyne [Orchidaceae, Spiranthinae] from the State of Colimia in western Mexico

86%

Gonzalez Tamayo R., Szlachetko D. L.

Fragmenta Floristica et Geobotanica

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1995

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tom 40

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nr 2

8

Demography, density, and survival of an endemic and near threatened cottontail Sylvilagus cunicularius in Central Mexico

86%

Gonzales J., Lara C., Vazquez J., Martinez-Gomez M.

Acta Theriologica

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2007

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tom 52

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nr 3

A 3-year live trapping investigation was carried out in a temperate forest in central Tlaxcala, México from 2002 to 2004. During a total of 504 trap nights, 87Silvilagus cunicularius Waterhouse, 1848 individuals were captured and marked, and age-specific survival models using demographic parameters were tested using the JOLLYAGE program. We evaluated population density of this species over a 1-year period. The age structure of the population varied among years, and the proportion of adults was relatively constant among years, whereas the proportion of juvenile showed high fluctuations. The sex ratio of juveniles that were recaptured as adults, did not differ from unity neither did the sex ratio for adults. We found no sex bias among cottontails during all 3 years of the study. When data for both sexes were combined, mean survival probability of juveniles was lower than that of adults. Although our line transect counts showed a mean density of 27 ± 5.4 individuals per km2, the obtained results from trapping suggests that this species is low in abundance at La Malinche. Further studies are needed to evaluate demographical aspects of this species at different protected and unprotected areas to obtain robust information about their status.

9

A new host record for Vasorhabdochona cablei [Nematoda, Rhabdochonidae] in the Pacific coast of Mexico

86%

Gonzalez-Solis D.

Acta Parasitologica

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2004

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tom 49

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nr 1

This study reports the presence of the nematode Vasorhabdochona cablei in the digestive tract of the white grunt, Haemulopsis leuciscus (syn. Pomadasys leuciscus) collected in the Chamela Lagoon, State of Jalisco, Mexico. This rhabdochonid species is characterized by the absence of longitudinal thickenings or teeth in the anterior end of vestibule, vulva in the anterior part of body and eggs without polar plugs or filaments. Its occurrence in this fish represents a new host record, since V. cablei has only been reported from an estuarine (Gobiomorus maculatus) and marine fish (Gillichthys mirabilis) from neighboring localities in the Pacific coast of Mexico.

10

Taxonomic studies of freshwater rotifers [Rotifera] from Mexico

86%

Sarma S. S. S., Elias-Gutierrez M.

Polskie Archiwum Hydrobiologii

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1997

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tom 44

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nr 3

11

El papel de la familia Compositae en la flora sinantropica de Mexico

86%

Rzedowski J.

Fragmenta Floristica et Geobotanica. Supplementum

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1993

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tom 02

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nr 1

12

Foleyellides rhinellae sp. nov. (Nematoda, Onchocercidae) a new filaria parasitizing Rhinella marina (Anura, Bufonidae) in Mexico

72%

Garcia-Prieto L., Ruiz-Torres N., Osorio-Sarabia D., Merlo-Serna A.

Acta Parasitologica

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2014

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tom 59

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nr 3

A new nematode species, Foleyellides rhinellae sp. nov. (Onchocercidae), is described from specimens found in the body cavity of the cane toad, Rhinella marina (Linnaeus) (Anura, Bufonidae), in the Laguna de Coyuca, Guerrero, in the Pacific slope of Mexico. The new species differs from the other nine species of Foleyellides by infecting bufonid anurans and by the number and arrangement of caudal papillae. Other distinguishing feature of the new species is the size of the left spicule (0.16–0.23 long), the smallest recorded among the species included in the genus. Foleyellides rhinellae sp. nov. is the second known species of the genus recorded from amphibians of Mexico.

13

Seroprevalence of Trypanosoma cruzi infection in pregnant women suggests a high risk for congenital transmission in Central Veracruz, Mexico

72%

Lopez-Monteon A., Montero H., Gonzalez-Constantino R. S., Limon-Flores A. Y., Varela-Cardoso M., Luna-Hernandez G., Dumonteil E., Ramos-Ligonio A.

Acta Parasitologica

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2020

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tom 65

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nr 3

14

Demographic features, distribution, and habitat selection of the gray mouse opossum (Tlacuatzin canescens) in Colima, Mexico

72%

Kennedy M. L., Schnell G. D., Romero-Almarez M. d. L., Malakouti B. S., Sanchez-Hernandez C., Best T. L., Wooten M. C.

Acta Theriologica

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2013

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tom 58

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nr 3

In western Mexico, gray mouse opossums Tlacuatzin canescens typically are not only in tropical deciduous and semideciduous woodlands but also in croplands and orchards. We conducted mark-recapture studies in January 2003–2007 and 2010 in coastal, northern, and central Colima, Mexico. Each year, five grids, established in areas of thick vegetation within a mosaic of habitats, had 100 stations (10 × 10), each with two Sherman traps, one on the ground and another elevated 1–2 m. On 24 of 30 grids, 82 individuals were captured 126 times (85.7 % in elevated traps). Sex ratio did not deviate from 1:1; there was no sexual dimorphism in mass (average for males, 28.21 g; average for females, 25.64 g); 46.3 % of animals were adults, 27.3 % of adult females were reproductively active, and 77.5 % of males had scrotal testes. Distance from centroid of trap locations averaged 15.24 m, with mean minimum distance moved between captures being 33.19 m. Densities usually were low (0.67–8.03/ha), with the species widespread in habitats studied. We assessed 14 environmental characteristics for each station using ANOVA, logistic regression, and nonparametric multiplicative regression (NPMR) to characterize habitat selection. T. canescens was more likely found where percent grass was about 30 % and litter over 50 %, with height of canopy less than 10 m and about 40 % closed. NPMR, being able to recognize hump-shaped response curves where intermediate variable values are preferred, identified two variables (percent grass and percent canopy closed) not detected by other techniques as important in characterizing habitat selection of T. canescens.

15

Effect of climate and physiography on the distribution of trees and shrubs species in Northwest Mexico

72%

Martinez-Antunez P., Wehenkel C., Hernandez-Diaz J. C., Gonzalez-Elizondo M., Corral-Rivas J. J., Pinedo-Alvarez A.

Polish Journal of Ecology

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2013

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tom 61

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nr 2

In order to understand the environmental variables that may impact more on the distribution of species of trees and shrubs, a correlation analysis applying the Covariation (C) of Gregorius was conducted among 14 variables of climate and physiography, and the number of individuals of 72 species, which were found in 1804 sampling plots (covering about 123,317 km²) of the National Forests and Soils Inventory (INFyS) developed by the National Forest Commission in Mexico (CONAFOR). Among the studied species there are several of the genera Quercus, Pinus and Junniperus, which are mainly distributed in the Sierra Madre Occidental, where they stand out for their abundance. The results show that the density of 88% of the studied species have a significant correlation (P <0.025) with at least five of the 14 variables analyzed. Seven of the variables showed significant correlation (P <0.025) with at least 74% of the studied species: ‘Julian date of last spring frost’ with an average value of covariation (C) equal to 0.71, ‘average duration of the frost-free period’ with average value of C = 0.71’, degree days above 5℃’ with covariation of 0.69, ‘altitude above sea level’ with C = 0.66; ‘mean temperature in the coldest month’, ‘mean temperature in the warmest month’ and ‘mean annual temperature’, with average values of C = 0.65 for each of these last three variables. The ‘geographic orientation of the ground’ was the least correlated with the density of the species, since only 10% of them showed significant correlation with this variable.

16

Psychological, social and environmental predictors of physical activity in Mexican adolescents

72%

Cocca A., Chmelik F., Cocca M., Verdugo F. D. E., Cuenca L. T. R.

Health Problems of Civilization

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2017

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tom 11

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nr 3

Background. Sedentarism and Physical Activity (PA) are considered main components of people’s lifestyle and key indicators of health. Although they can be seen as opposite life conducts that reduce each other’s effects on health, no study has yet clarified the nature of their relation. However, both behaviors can be influenced by similar psychological, social, and environmental constructs. Material and methods. We selected 480 students (272 boys, 208 girls) from middle schools in the metropolitan area of Monterrey (Mexico), who filled in questionnaires on PA behaviors and social-environmental correlates through an online system. Results. Our outcomes highlighted overall low PA levels. Further, girls are more affected by their social environment, whereas physical environment barriers represent a fitting predictor of boys’ PA. Regardless of gender, PA engagement seems to be significantly determined by the level of enjoyment of sedentary behaviors. Conclusions. These results can help professionals in PA and health create gender-specific interventions targeting to raise youth’s PA levels by means of enhancing psychosocial and contextual features. Due to the lack of studies on psychological factors related to sedentary behaviors, our results could arouse attention on this issue and promote further research to better understand the processes beneath it.

17

Impact of a dipole on the phytoplankton community in a semi-enclosed basin of the Southern Gulf of California, Mexico

72%

Duran-Campos E., Monreal-Gomez M. A., Salas de Leon D. A., Coria-Monter E.

Oceanologia

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2019

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tom 61

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nr 3

18

Influence of neighboring tree species on AFLP variants of endangered Picea chihuahuana Martinez populations on the Sierra Madre Occidental, North-Wastern Mexico

72%

Quinones-Perez C. Z., Saenz-Romero C., Wehenkel C.

Polish Journal of Ecology

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2014

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tom 62

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nr 1

Plant-plant interactions, which are defined as the effect of one plant on another of the same or different species, are inherently local in nature. Plants interact in both positive and negative ways, which are governed by the same underlying ecological dynamic processes. The Mexican endemic Picea chihuahuana Martínez is a largely untouched tree species and it is therefore an excellent model for estimating genetic potential of plant-plant interactions under natural conditions. Because of the scarce research examining plant-plant interactions at the genetic level,we tested the hypothesis that specific genetic variants of P. chihuahuana areassociated with (and likely selected by) the presence of particular neighbouring tree species. To explore this question, we applied AFLP genotyping to five P. chihuahuana populations in the State of Durango, North-western Mexico. Under the assumption that the variables genetic variant of P. chihuahuana and nearest-neighbour tree species are directly related to each other, the results show a statistically significant association between such genetic variants – at one AFLP locus in one Picea population – and two nearest-neighbour conifer species (P. chihuahuana Martínez and Pinus arizonica Engelm.). The findings indicate that interactions between genetic variants and species diversity may be crucial in shaping plant communities. However, further studies are required for a better understanding of the possible roles that such associations between genetic variants might play.

19

Turystyka na obszarach chronionych w Meksyku i Kostaryce - stan obecny

72%

Siwinska M.

Afryka, Azja, Ameryka Łacińska

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2000

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tom 77

15-21

20

Morphology and sequence data of Mexican populations of the ciliate parasite of marine fishes Trichodina rectuncinata (Ciliophora: Trichodinidae)

72%

Islas-Ortega A. G., Aguilar-Aguilar R., Marcotegui P., Martorelli S., Hernandez-Mena D., Perez-Ponce de Leon G.

Acta Protozoologica

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2018

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tom 57

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nr 2

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