Why reduce clutch size to one or two eggs? Reproductive allometries reveal different evolutionary causes of invariant clutch size in lizards
L Kratochvíl, L Kubička - Functional ecology, 2007 - JSTOR
1. Large clutch size is unambiguously an ancestral state in reptiles. However, females of
several lizard lineages lay just one or two eggs per clutch, called invariant clutch size …
several lizard lineages lay just one or two eggs per clutch, called invariant clutch size …
Why are clutch sizes more variable in some species than in others?
R Shine, AE Greer - Evolution, 1991 - Wiley Online Library
Animal species differ in the variability of their clutch sizes, as well as in mean clutch sizes.
This phenomenon is particularly obvious in lizards, where virtually invariant clutch sizes …
This phenomenon is particularly obvious in lizards, where virtually invariant clutch sizes …
Clutch frequency affects the offspring size-number trade-off in lizards
Z Wang, Y Xia, X Ji - PLoS One, 2011 - journals.plos.org
Background Studies of lizards have shown that offspring size cannot be altered by
manipulating clutch size in species with a high clutch frequency. This raises a question of …
manipulating clutch size in species with a high clutch frequency. This raises a question of …
Maternal Size Determines Clutch Mass, whereas Breeding Timing Influences Clutch and Egg Sizes in the Tropical Lizard, Calotes versicolor (Agamidae)
BA Shanbhag, RS Radder, SK Saidapur - Copeia, 2000 - meridian.allenpress.com
We studied the correlations between body size parameters (SVL and body condition) and
clutch parameters (size and mass) as well as between clutch size and egg parameters …
clutch parameters (size and mass) as well as between clutch size and egg parameters …
SEVERE COSTS OF REPRODUCTION PERSIST IN ANOLIS LIZARDS DESPITE THE EVOLUTION OF A SINGLE-EGG CLUTCH
RM Cox, R Calsbeek - Evolution, 2010 - academic.oup.com
A central tenet of life-history theory is that investment in reproduction compromises survival.
We tested for costs of reproduction in wild brown anoles (Anolis sagrei) by eliminating …
We tested for costs of reproduction in wild brown anoles (Anolis sagrei) by eliminating …
Reproductive allometry and the size-number trade-off for lizards
RW Warne, EL Charnov - The American Naturalist, 2008 - journals.uchicago.edu
Fundamental to life-history theory is the assumed inverse proportionality between the
number of offspring and the resource allocation per offspring. Lizards have been model …
number of offspring and the resource allocation per offspring. Lizards have been model …
Experimental tests of reproductive allocation paradigms
B Sinervo - Lizard ecology: historical and experimental …, 1994 - degruyter.com
Variation among individuals is the raw material for natural selection (Darwin 1859). Natural
selection acts on variation in traits, but because of genetically based trade-offs, adaptive …
selection acts on variation in traits, but because of genetically based trade-offs, adaptive …
Does body-volume constrain reproductive output in lizards?
The numbers and sizes of eggs produced by adult females ultimately determine the viability
of populations, as well as the evolutionary fitness of the females themselves. Despite an …
of populations, as well as the evolutionary fitness of the females themselves. Despite an …
Body-size effect on egg size in eublepharid geckos (Squamata: Eublepharidae), lizards with invariant clutch size: negative allometry for egg size in ectotherms is not …
L Kratochvíl, D Frynta - Biological Journal of the Linnean Society, 2006 - academic.oup.com
Within a single clutch, smaller species of ectotherms generally lay a smaller number of
relatively larger eggs than do larger species. Many hypotheses explaining both the …
relatively larger eggs than do larger species. Many hypotheses explaining both the …
Allometry of reproduction in two species of gekkonid lizards (Gehyra): effects of body size miniaturization on clutch and egg sizes
P Doughty - Journal of Zoology, 1996 - Wiley Online Library
In squamate reptiles there is an allometric pattern for small‐bodied females to have smaller
clutches and proportionally larger eggs than large‐bodied females, and this pattern occurs …
clutches and proportionally larger eggs than large‐bodied females, and this pattern occurs …