Published April 21, 2024 | Version final
Journal article Open

ECOLOGÍA TÉRMICA DE Craugastor fitzingeri, (ANURA: CRAUGASTORIDAE) EN LA RESERVA HÍDRICA CERRO TUREGA, COCLÉ, PANAMÁ

Creators

  • 1. Universidad de Panamá, Centro Regional Universitario Coclé
  • 2. Universidad de Panamá, Facultad de Ciencias Naturales, Museo de Vertebrados
  • 3. Museo de Vertebrados de la Universidad de Panamá

Description

El cambio climático es una amenaza para los anfibios, al ser dependientes de la temperatura ambiental para sus requerimientos comportamentales, ecológicos y fisiológicos. En este trabajo se describe la relación entre la temperatura ambiental (TA), temperatura de sustrato (TS) y la longitud hocico-cloaca (LHC) sobre la temperatura corporal (TC) de Craugastor fitzingeri en el bosque húmedo premontano de la Reserva Hídrica Cerro Turega, provincia de Coclé, Panamá. Durante cuatro meses se registró LHC, humedad del aire, TA, TS y TC en el sitio exacto donde se ubicó cada rana. Con un esfuerzo de muestreo de 320 horas, se registró un total de 171 individuos. Se obtuvo los siguientes valores: TC ( = 25.02°C; SD = 0.93), TS ( = 25.00°C; SD = 1.35), TA ( = 23.07°C; SD =1.34), humedad del aire ( = 74.52 %; SD = 9.87) y LHC ( = 29.37 mm; SD = 7.95). No se encontró relación entre TC y LHC, pero si entre TC y TA. No se encontró variación significativa en TC entre día y noche (t = -3.57; p ˂ 0.05). C. fitzingeri parece ser termoconformista, heliotérmica y tigmotérmica. Se obtuvo que LHC no influye en el mecanismo de intercambio de calor. La mayor abundancia de individuos se registró durante la noche en febrero (50 ind.) y durante el día en agosto (25 ind.). La mayor abundancia de individuos en estación seca se registró durante la noche (74 ind.) y en estación lluviosa (43 ind.) durante el día. El sustrato preferido en ambas estaciones fue la hojarasca.

Abstract (English)

THERMAL ECOLOGY OF Craugastor fitzingeri, IN THE RESERVA HIDRICA CERRO TUREGA, COCLÉ, PANAMA

Climate change is a threat to amphibians, as they are dependent on environmental temperature for their behavioral, ecological and physiological requirements. This work describes the relationship between environmental temperature (AT), substrate temperature (TS) and snout-vent length (LHC) on body temperature (BT) of Craugastor fitzingeri in the premontane humid forest of the Reserva Hídrica Cerro Turega, province of Coclé, Panama. For four months, LHC, air humidity, TA, TS and TC were recorded in the exact location where each frog was located. With a sampling effort of 320 hours, a total of 171 individuals were recorded. The following values were obtained: TC ( = 25.02°C; SD = 0.93), TS ( = 25.00°C; SD = 1.35), TA ( = 23.07°C; SD =1.34), air humidity ( = 74.52 %; SD = 9.87) and LHC ( = 29.37 mm; SD = 7.95). There is no significant relation was found between TC and LHC, but there is between TC and TA. No significant variation was found in TC between day and night (t = -3.57; p ˂ 0.05). C. fitzingeri appears to be thermoconformist, heliothermic and thigmothermic. It was obtained that LHC does not influence the heat exchange mechanism. The highest abundance of individuals was recorded at night in February (50 ind.) and during the day in August (25 ind.). The highest abundance of individuals in the dry season was recorded during the night (74 ind.) and in the rainy season (43 ind.) during the day. The preferred substrate in both seasons was leaf litter.

KEYWORDS: Climate Change, body temperature, environmental temperature, thermoregulation.

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