Reproductive characteristics of the island lacertid lizard Podarcis lilfordi

A. M. Castilla, D. Bauwens

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We report reproductive characteristics (dutch frequency, clutch size, egg and hatchling sizes) of the island lizard Podarcis lilfordi, studied in the laboratory. Individual females produced two or three consecutive clutches, composed of 2-4 eggs with an average mass of 0.63 g. Both clutch size and average egg mass were independent of female body length, and did not differ between the first and subsequent annual clutches. Among-clutch differences in egg mass were negatively correlated with clutch size, and this trade-off is independent of female size. Larger clutches were also composed of less elongated (i.e., rounder) eggs than are smaller clutches, suggesting that limitations posed by the females' body volume, rather than by restrictions of energy availability, induce the phenotypic trade-off between egg size and numbers. Egg shape was also related to female size: larger females laid shorter but wider eggs than smaller individuals, suggesting that egg width is constrained by the width of the female's pelvic girdle. Relative to other European lacertids with similar adult female body length, P. lilfordi produces clutches that are composed of very few, but extremely large eggs.

Original languageEnglish
Pages (from-to)390-396
Number of pages7
JournalJournal of Herpetology
Volume34
Issue number3
Publication statusPublished - 2000
Externally publishedYes

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lizard
lizards
egg
clutch size
egg masses
body length
trade-off
Lacertidae
Podarcis lilfordi
egg size
energy

ASJC Scopus subject areas

  • Animal Science and Zoology

Cite this

Reproductive characteristics of the island lacertid lizard Podarcis lilfordi. / Castilla, A. M.; Bauwens, D.

In: Journal of Herpetology, Vol. 34, No. 3, 2000, p. 390-396.

Research output: Contribution to journalArticle

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