Seasonal and Sexual Variation of the Intermediate Metabolism and Body Condition Indexes in the Lizard Tropidurus catalanensis (Gudynas and Skuk, 1983) (Squamata: Tropiduridae)
- 1 April 2018
- journal article
- research article
- Published by Brazilian Herpetological Society in South American Journal of Herpetology
- Vol. 13 (1) , 85-95
Abstract
Throughout the life cycle of organisms, nutrient intake is necessary for the maintenance of the functions of daily life and in preparation for a variety of biological events, such as molting, migration, hibernation, and reproduction. One of the most energetically costly events is reproduction. Present study sought to elucidate the seasonal variations in the markers of intermediate metabolism (total proteins, uric acid, glucose, total lipids, triglycerides, total cholesterol, VLDL cholesterol, and glycogen) and body condition indices (gonadossomatic, hepatosomatic, and abdominal fat index) in Tropidurus catalanensis, in order to know the physiological costs of reproduction in this species, also allowing these parameters to be used as markers in studies of environmental alterations. During the study period, 38 males and 35 females were collected. Tropidurus catalanensis is a lizard that inhabits the Pampa grasslands, a biome that stretches across Argentina, Brazil, and Uruguay. Results obtained re... Resumo. Ao longo do ciclo de vida dos organismos, a entrada de nutrientes é necessária para a manutenção e antecipação de eventos biológicos. Um dos eventos com maior custo energético é a reprodução. Este estudo procurou elucidar as variações sazonais em marcadores do metabolismo intermediário (proteína total, ácido úrico, glicose, lipídios totais, triglicerídeos, colesterol total, colesterol VLDL e glicogênio) e índices de condição corporal (gonadaossomático, hepatossomático e de gordura abdominal) em Tropidurus catalanensis, a fim de conhecer os custos fisiológicos da reprodução, permitindo também que esses parâmetros sejam utilizados, no futuro, como marcadores em estudos de alterações ambientais. Durante o período de estudo, 38 machos e 35 fêmeas foram coletados. Tropidurus catalanensis é um lagarto que habita as pastagens de Pampa, um bioma que se estende por toda a Argentina, Brasil e Uruguai. Os resultados obtidos revelam que esse lagarto apresenta um claro padrão de variação sazonal em seu metabol...Keywords
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