Thermal dependence of reproductive allocation in a tropical lizard

Zuzana Starostová, Michael Angilletta, Lukáš Kubička, Lukáš Kratochvíl

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

In ectotherms, environmental temperature is the most prominent abiotic factor that modulates life-history traits. We explored the influence of environmental temperature on reproduction in the Madagascar ground gecko (Paroedura picta) by measuring reproductive traits of females at constant temperatures (24, 27, 30°C). Females of this species lay clutches of one or two eggs within short intervals. For each female, we measured egg mass for the first five clutches. For one clutch, we also measured the energetic content of eggs via bomb calorimetry. Temperature positively influenced the rate of egg production, but females at 30°C laid smaller eggs than did females at either 24 or 27°C. Dry mass of eggs scaled allometrically with wet mass, but this relationship was similar among thermal treatments. Females at all temperatures produced eggs with similar energy densities. Females at 24°C allocated less energy per time unit (≈8. mW) to reproduction than did females from higher temperatures (≈12. mW). However, females at either 24 or 27°C allocated significantly more energy per egg than did females at 30°C. Our results demonstrate that a complex thermal sensitivity of reproductive rate can emerge from distinct thermal sensitivities of egg size, egg composition and clutch frequency.

Original languageEnglish (US)
Pages (from-to)159-163
Number of pages5
JournalJournal of Thermal Biology
Volume37
Issue number3
DOIs
StatePublished - Apr 2012

Fingerprint

Lizards
lizards
Hot Temperature
Clutches
heat
Eggs
Ovum
Temperature
egg masses
Calorimetry
Reproduction
ambient temperature
temperature
egg composition
Bombs
Madagascar
Heat treatment
Gekkonidae
energy density
energy

Keywords

  • Egg composition
  • Life history
  • Maternal investment
  • Phenotypic plasticity
  • Reproduction
  • Thermal effect

ASJC Scopus subject areas

  • Physiology
  • Developmental Biology
  • Biochemistry
  • Agricultural and Biological Sciences(all)

Cite this

Thermal dependence of reproductive allocation in a tropical lizard. / Starostová, Zuzana; Angilletta, Michael; Kubička, Lukáš; Kratochvíl, Lukáš.

In: Journal of Thermal Biology, Vol. 37, No. 3, 04.2012, p. 159-163.

Research output: Contribution to journalArticle

Starostová, Zuzana ; Angilletta, Michael ; Kubička, Lukáš ; Kratochvíl, Lukáš. / Thermal dependence of reproductive allocation in a tropical lizard. In: Journal of Thermal Biology. 2012 ; Vol. 37, No. 3. pp. 159-163.
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