Objective. To describe reproductive phenological stages, since the formation of flower buds, flowering, fruiting, up to the formation of the ripe fruit and foliation of 21 Couepia polyandra trees; and correlation of allometric data of tree height, diameter at breast height (DBH) and crown diameter, as well as the correlation of precipitation with reproductive phenology data. Methodology. The description of the reproductive phenology (foliage, formation of flower buds, flowers, fruits) was done by direct monthly observation with a digital camera (Canon SX60HS, 65). The correlation among precipitation, allometry, and types of soils where the trees grow was calculated by recording data from each tree by measuring height, diameter at breast height (DBH) and foliage. Results. The highest tree was 21.0 m; the widest DBH measured 68 cm; and the greater crown diameter was 34.45 m; the overall averages were 10.38 m, 33.17 cm and 9.37 m, respectively. A significant correlation was found between height and DBH (r=0.91, p<0.05); the correlations for the variables Height-Crown and DBH-Crown were not significant (p>0.05). Conclusions. Water as a factor is responsible for the formation of inflorescence and fruit; determining that these phenological events are dependent variables with precipitation, highlighting a mean positive relation with the growth of flowers.
Los estudios sobre la dieta permiten entender las relaciones tróficas entre las comunidades bióticas. La zorra gris es un mamífero de hábitos solitarios y activo tanto de día como de noche, tiene una dieta omnívora, con hábitos alimentarios flexibles y oportunistas. La serpiente voladora es un colúbrido de actividad diurna con una amplia agilidad entre las ramas de los árboles. La zona donde se obtuvo el registro de la zorra fue en Komchén de los Pájaros, se ubica al norte del estado de Yucatán. Del 23 de diciembre de 2019 hasta el 31 de diciembre de 2021, se colocaron 8 cámaras-trampas, 6 funcionaron como estaciones independientes y 2 como una estación doble. Fueron programadas para su funcionamiento de 24 horas. El 4 de diciembre de 2021, se registró en la estación 4 a una zorra gris (Urocyon cinereoargenteus). La imagen muestra a la zorra en marcha y llevando en el hocico a una serpiente voladora (Spilotes pullatus), aunque sin evidencia de que la consumiera, lo que indica que potencialmente pudo existir dicho evento. Se han registrado pocas especies de reptiles en la dieta de U. cinereoargenteus, hasta ahora se han identificado a la iguana Iguana iguana, y la lagartija caimán norteña Gerrhonotus infernalis. Para el caso específico de S. pullatus no hay ningún registro actual. Aunque no encontramos evidencia de que la zorra gris consumiera a la serpiente, potencialmente este sería el primer registro de esta interacción.
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