Historic record of the Central American tapir Tapirus bairdii in the isthmus of Tehuantepec, Oaxaca, Mexico

 This note reports a historic record of the Central American Tapir, Tapirus bairdii, for the Coastal Plain of the Isthmus of Tehuantepec in Oaxaca, Mexico. The record was dated to the decade of 1950, and was found 40 km from the closest historic locality. The presence of this species suggests two hypotheses: that the observed specimens belong to a previously existing population in this region, or that these specimens come from the Los Chimalapas region.   

Treatment with tocilizumab or corticosteroids for COVID-19 patients with hyperinflammatory state: a multicentre cohort study (SAM-COVID-19)

Objectives: The objective of this study was to estimate the association between tocilizumab or corticosteroids and the risk of intubation or death in patients with coronavirus disease 19 (COVID-19) with a hyperinflammatory state according to clinical and laboratory parameters. Methods: A cohort study was performed in 60 Spanish hospitals including 778 patients with COVID-19 and clinical and laboratory data indicative of a hyperinflammatory state. Treatment was mainly with tocilizumab, an intermediate-high dose of corticosteroids (IHDC), a pulse dose of corticosteroids (PDC), combination therapy, or no treatment. Primary outcome was intubation or death; follow-up was 21 days. Propensity score-adjusted estimations using Cox regression (logistic regression if needed) were calculated. Propensity scores were used as confounders, matching variables and for the inverse probability of treatment weights (IPTWs). Results: In all, 88, 117, 78 and 151 patients treated with tocilizumab, IHDC, PDC, and combination therapy, respectively, were compared with 344 untreated patients. The primary endpoint occurred in 10 (11.4%), 27 (23.1%), 12 (15.4%), 40 (25.6%) and 69 (21.1%), respectively. The IPTW-based hazard ratios (odds ratio for combination therapy) for the primary endpoint were 0.32 (95%CI 0.22-0.47; p < 0.001) for tocilizumab, 0.82 (0.71-1.30; p 0.82) for IHDC, 0.61 (0.43-0.86; p 0.006) for PDC, and 1.17 (0.86-1.58; p 0.30) for combination therapy. Other applications of the propensity score provided similar results, but were not significant for PDC. Tocilizumab was also associated with lower hazard of death alone in IPTW analysis (0.07; 0.02-0.17; p < 0.001). Conclusions: Tocilizumab might be useful in COVID-19 patients with a hyperinflammatory state and should be prioritized for randomized trials in this situatio

Registros nuevos de Abronia mixteca (Sauria: Anguidae) en Oaxaca, México New records of Abronia mixteca (Sauria: Anguidae) in Oaxaca, Mexico

Se dan a conocer registros nuevos de Abronia mixteca en el estado de Oaxaca, México. Los organismos fueron encontrados en bosque de pino, pino-encino y encino-pino en 5 localidades en la subprovincia fisiográfica Montañas y Valles del Occidente de Oaxaca. Estos registros incrementan el conocimiento del área de distribución, rango altitudinal y hábitat de A. mixteca.<br>We present new records of Abronia mixteca in the Mexican state of Oaxaca. The organisms were found in pine forest, pine-oak forest, and oak-pine forest from 5 localities in the physiographic subprovince of Mountains and Valleys of Western Oaxaca. These records increase the distribution area of A. mixteca known to date

Avifauna de la Sierra de Cuatro Venados, Oaxaca, México

En este trabajo reportamos las especies de aves presentes en la Sierra de Cuatro Venados, centro-occidente de Oaxaca, México; las registramos mediante redes de niebla, búsqueda intensiva y revisión de literatura. Fueron 160 especies (38 familias y 12 órdenes), mismas que representan 21.5% de las especies reportadas para Oaxaca. Los registros de cinco especies representan un incremento en su distribución geográfica para las montañas del centro de Oaxaca. Del total de especies, el orden Passeriformes representó 67.5% de la riqueza específica y las familias Parulidae (10.6%) y Emberizidae (10.6%) fueron las más diversas. Alrededor de 85.0% de las especies son residentes y 13.7% corresponde a visitantes de invierno. Registramos 24 aves endémicas o cuasiendémicas a México y 13 especies protegidas por la legislación mexicana. La Sierra de Cuatro Venados posee una avifauna particular compuesta principalmente por especies afines a las montañas de las vertientes oceánicas del Atlántico y del Pacífico (41.2%) y de especies distribuidas ampliamente en el sur de México (36.9%). La importancia de la Sierra de Cuatro Venados radica en su posición como corredor de ambientes templados que conectan a las avifaunas del norte y sur de Oaxaca