Microhabitat selection of Ameiva ameiva (LINNAEUS, 1758), in the Brazilian Pantanal

Autor(es)

Benicio, Ronildo A. ^[1] ; Ortega, Zaida ^[2] ; Mencia, Abraham ^[3] ; Passos, Daniel Cunha ^[4]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Programa Posgrad Ecol & Recursos Nat, Rodovia Washington Luiz, Km 235, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Fed Mato Grosso do Sul, Programa Posgrad Ecol & Conservacao, Av Costa e Silva S-N, BR-79070900 Campo Grande, MS - Brazil

^[3] Univ Fed Mato Grosso do Sul, Programa Posgrad Biol Anim, Av Costa e Silva S-N, BR-79070900 Campo Grande, MS - Brazil

^[4] Univ Fed Rural Semi Arido, Lab Ecol & Comportamento Anim, Programa Posgrad Ecol & Conservacao, Rua Francisco Mota 572, BR-59625900 Mossoro, RN - Brazil

• Tipo de documento: Artigo Científico
• Fonte: HERPETOZOA; v. 31, n. 3-4, p. 211-218, FEB 28 2019.
• Citações Web of Science: 0

Resumo

The authors studied the influence of three environmental traits on the microhabitat selection of Ameiva ameiva (LINNAEUS, 1758), in the Brazilian Pantanal, an environment with a marked effect of seasonality, i.e., alternating periods of flooding and falling dry. Microhabitat selection was assessed in the dry season using a Resource Selection Function (RSF) and Conditional Logistic Regression (CLR) analysis. Twenty-nine adult individuals of A. ameiva were observed. The average temperature in places where individuals occurred was 36 degrees C (ranging from 27 degrees C to 51 degrees C; SD = 6.8 degrees C). The pattern of the temperature of the substrate on which A. ameiva was observed showed peaks, occurring alternatively either at very high but also milder temperatures along its daily activity period. The CLR model revealed that none of the studied environmental variables (substrate temperature, type of substrate or sun exposure) significantly affected the probability of occurrence of Ameiva lizards at a particular point (P = 0.11, P = 0.69, P = 0.87, respectively). Regarding the sun exposure situation the qualities full sun, shade and filtered sun were distinguished, the substrate type comprised the parameter values grass, leaflitter and exposed soil. The results suggest that A. ameiva is not a microhabitat specialist, at least during the dry season in the Pantanal of Brazil. (AU)

• Processo FAPESP: 15/11821-0 - Efeitos históricos e contemporâneos na distribuição filogenética de anuros na mata atlântica
• Beneficiário: Ronildo Alves Benício
• Modalidade de apoio: Bolsas no Brasil - Doutorado