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Updated: Jun 16, 2025

Incremental Temperature Changes for Maximal Breeding and Spawning in Astyanax mexicanus
Published on: February 14, 2021
Temperature and fertility: Evidence from Spain
Risto Conte Keivabu1, Marco Cozzani2, Joshua Wilde1
1Max Planck Institute for Demographic Research.
Abstract:
In this paper, we combine administrative data for Spain from 2010 to 2018 with meteorological data, to identify the effect of daily mean temperature on fertility. We demonstrate for Spain that hot days (≥25°C) decrease the total fertility rate nine months after exposure. Moreover, we do not observe any substantial heterogeneities in the effect of heat by mother's age, mother's educational attainment, sex of the newborn, climatic area, or air conditioning penetration. Our results suggest that climate change may be altering the seasonal distribution of births and affect fertility rates in a context with low fertility and rapid population ageing.
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