title: Life-history evolution on tropidurinae lizards: influence of lineage, body size and climate.
abstract: The study of life history variation is central to the evolutionary theory. In many ectothermic lineages, including lizards, life history traits are plastic and relate to several sources of variation including body size, which is both a factor and a life history trait likely to modulate reproductive parameters. Larger species within a lineage, for example tend to be more fecund and have larger clutch size, but clutch size may also be influenced by climate, independently of body size. Thus, the study of climatic effects on lizard fecundity is mandatory on the current scenario of global climatic change. We asked how body and clutch size have responded to climate through time in a group of tropical lizards, the Tropidurinae, and how these two variables relate to each other. We used both traditional and phylogenetic comparative methods. Body and clutch size are variable within Tropidurinae, and both traits are influenced by phylogenetic position. Across the lineage, species which evolved larger size produce more eggs and neither trait is influenced by temperature components. A climatic component of precipitation, however, relates to larger female body size, and therefore seems to exert an indirect relationship on clutch size. This effect of precipitation on body size is likely a correlate of primary production. A decrease in fecundity is expected for Tropidurinae species on continental landmasses, which are predicted to undergo a decrease in summer rainfall.
authors: Departamento de Fisiologia, Instituto de Biociências, Universidade de São Paulo, São Paulo, Brazil. rbrandt@ib.usp.br
authors: Renata
authors: R
authors: Brandt
authors: Carlos A
authors: CA
authors: Navas
references: Evolution. 2003 Apr;57(4):717-45
references: 12778543
references: Oecologia. 1978 Jan;37(2):257-272
references: 28309655
references: Naturwissenschaften. 2000 Nov;87(11):476-86
references: 11151666
references: Physiol Biochem Zool. 2008 Sep-Oct;81(5):526-50
references: 18754728
references: Evolution. 2000 Aug;54(4):1386-95
references: 11005304
references: Ecol Lett. 2008 Oct;11(10):995-1003
references: 18673385
references: Am Nat. 2019 Jun;193(6):755-772
references: 31094602
references: Am Nat. 2000 Mar;155(3):346-364
references: 10718731
references: Evolution. 1970 Mar;24(1):55-74
references: 28563006
references: J Evol Biol. 2010 Jan;23(1):98-111
references: 19895656
references: Rev Biol Trop. 2009 Dec;57(4):1253-62
references: 20073350
references: J Evol Biol. 2008 May;21(3):781-90
references: 18384539
references: Oecologia. 2003 Aug;136(3):450-6
references: 12750993
references: Oecologia. 2006 Jun;148(2):213-8
references: 16525785
references: Biol Lett. 2005 Mar 22;1(1):98-100
references: 17148138
references: Oecologia. 1988 Mar;75(2):307-316
references: 28310852
references: Philos Trans R Soc Lond B Biol Sci. 1989 Dec 21;326(1233):119-57
references: 2575770
references: J Evol Biol. 2004 Sep;17(5):1157-61
references: 15312088
references: Mol Phylogenet Evol. 2001 Dec;21(3):352-71
references: 11741379
references: Philos Trans R Soc Lond B Biol Sci. 1995 Jun 29;348(1326):405-21
references: 7480112