IDEA   23902
INSTITUTO DE DIVERSIDAD Y ECOLOGIA ANIMAL
Unidad Ejecutora - UE
artículos
Título:
Activity and reproductive patterns of lizards in the Chaco of Argentina
Autor/es:
PELEGRIN, NICOLAS; BUCHER, ENRIQUE H.
Revista:
JOURNAL OF NATURAL HISTORY
Editorial:
TAYLOR & FRANCIS LTD
Referencias:
Lugar: Londres; Año: 2015
ISSN:
0022-2933
Resumen:
We studied the activity and breeding pattern of dominant lizard species in the Arid
Chaco, the southernmost subregion of the Chaco ecoregion (Chancaní Reserve,
Córdoba province, Argentina). Lizards were captured with pitfall traps over a
4-year period. In total, 1449 individuals belonging to 11 of the 12 lizard species
recorded in the area were trapped. Of these, we selected six species for a detailed
analysis: Teius teyou and Stenocercus doellojuradoi accounted for 63% of the
captures, Tropidurus etheridgei, Liolaemus chacoensis and Homonota fasciata
accounted for 32%, and 5% comprised Leiosaurus paronae and the remaining
five species. All the studied species were active during the warm?rainy season
(September to March). Monthly lizard captures were highly correlated with
monthly mean temperature and rainfall. No captures occurred during the remaining
months of the year. All reproductive tactics known for the Chaco lizards were
observed in Chancaní, including single clutch in a short breeding season in summer
or autumn, as well as an extended breeding season with multiple clutches.
Stenocercus doellojuradoi and L. paronae showed a singular reproductive timing,
suggesting the occurrence of egg retention. Compared with sub-tropical Chaco
sites, the Arid Chaco only differs in the lack of winter activity, resulting from the
lower temperature and rainfall regime of our study site.
Keywords: Arid Chaco; life history traits; reptiles; early adult