THE INFLUENCE OF TEMPERATURE ON THE FEEDING BEHAVIOR OF Peltocephalus dumerilianus (TESTUDINES PODOCNEMIDAE)
Journal Title: Revista MVZ Cordoba - Year 2009, Vol 14, Issue 1
Abstract
Objective. To analyze the feeding behavior of 50 Peltocephalus dumerilianus hatchlings (Testudines Podocnemididae) under different temperature conditions in laboratory. Materials and methods. The individuals for this experiment were obtained by incubation in the laboratory. They were divided randomly into 5 groups. Temperature trials were conducted for 2 months with 3 repetitions per week, using electric heaters. Temperatures were recorded continuously using a digital thermometer - 10 to + 60ºC (± 0.1ºC). Temperatures were increased 0.25ºC every 10 minutes until reaching the selected temperature, which was then maintained for 60 minutes for each test. The temperatures selected for tests, were 26ºC, 30ºC, 34ºC, 38ºC, with an ambient temperature of 26.8ºC. We evaluated: feeding duration (in minutes), consumption (in volume), the time which turtles began agonistic behavior, and two characteristic displays: biting and disputes over food. Results. In general all parameters were significant, the higher the temperature the longer the time of ingestion; the lower the temperature the lower the consumption volume; the lower the temperature the greater the time to initiation of agonistic behavior, demonstrating an inverse relationship. Conclusions. There was a direct relationship between environmental temperature and feeding processes. Temperature was also related to basic aspects of behavior during agonistic displays.
Authors and Affiliations
Jaime De La Ossa V, Ph. D| Universidad de Sucre. Facultad de Ciencias Agropecuarias. Barrio Puerta Roja. Sincelejo, Sucre, Colombia,., Richard C. Vogt, Ph. D| INPA/BADPI. Av. André Araújo 2936 Campus II, Petrópolis 69083-970. Manaus, Amazonas, Brasil., Larissa Schneider, M. Sc| INPA/BADPI. Av. André Araújo 2936 Campus II, Petrópolis 69083-970. Manaus, Amazonas, Brasil., Alejandro De La Ossa L, Ecólogo| Universidad Javeriana, Bogotá, Colombia.
Keywords
Related Articles
- EP ID EP3117
- DOI -
- Views 347
- Downloads 20
Effects of dietary antioxidant of tomato extract and lycopene on Carassius auratus and Xiphophorus maculatus
Objective. Evaluate the effect on tegument pigmentation, survival, growth and antioxidant capacity in diets supplemented with tomato extract and lycopene as additives in experimental feed for Carassius auratus and Xiphop...
Neospora caninum infection in beef cattle reared under grazing conditions in north-central Mexico
Objetive. To determine the seroprevalence of N. caninum antibodies and prevalence of parasite DNA in blood, and estimate the association between seroprevalence and the potential risk of some factors in beef cattle under...
The use of conantokin and polyclonal antibodies to identify the NR2B subunit of the n-methyl-d-aspartate receptor
Objective. To propose a methodology that identifies the NR2B subunit through the use of conantokin G, as well as an adequate extraction of the NR2B subunit. Materials and methods. Two methodologies were tested for the ex...
Snake report of the municipality of Tamalameque, Cesar – Colombia
Objective. Preliminary identification of the ophidians of the municipality of Tamalameque, department of Cesar Colombia. Materials and methods. Between January and May of 2009, by means of free search and manual capture...
SEROLOGICAL ASSOCIATION BETWEEN EQUINE RINONEUMONITIS AND EQUINE INFECTIOUS ANEMIA VIRUSES
Objective. To determine the level of serological association between equine herpes virus 1 and 4 (EHV-1 and EHV-4) and equine infectious anemia virus (EIAV) in horses from five municipalities of Meta department (Colombia...