Analysis of the potential geographic range of the Pacific oyster Crassostrea gigas (Thunberg, 1793) based on surface seawater temperature satellite data and climate charts: the coast of South America as a study case

作者：Carrasco Mauro F^*; Baron Pedro J

来源：Biological Invasions, 2010, 12(8): 2597-2607.

DOI：10.1007/s10530-009-9668-0

• Ecological niche modeling
• Non-indigenous species
• Temperature range
• Ecological risk
• Oyster introduction

Ecological niche modeling based on surface seawater (SST) and atmospheric (AT) temperature records was used to predict the potential range of distribution of Crassostrea gigas, focusing on the South American coast as a study case. In its native range, the species maintains self-sustaining populations at thermal regimes with mean SST ranging from 14.0A degrees to 28.9A degrees C for the warmest month and from -1.9A degrees to 19.8A degrees C for the coldest month of the year. Settlement is also constrained to mean AT varying between 15A degrees and 31A degrees C for the warmest month and between -23A degrees and 14A degrees C for the coldest month of the year. Latitudinal limits for the species' distribution in South America predicted by the analysis of AT regimes were Valdivia-Chiloe Island (39.8A(0)aEuro"42.0A degrees S, Chile) and Pisco (13.4A degrees S, Peru) on the Pacific coast, and San Julian port (49.3A degrees S) (Argentina) and Garopaba-Rio Grande (28.0A degrees aEuro"32.0A degrees S, Brazil) on the Atlantic coast. Geographical limits of distribution predicted by analysis of SST regimes were Chiloe Island (42.0A degrees S, Chile) and Mancora (4.1A degrees S, Peru) on the Pacific coast, and Puerto Deseado ria (47.7A degrees S, Argentina) and Paranagua (25.7A degrees S, Brazil) on the Atlantic coast. Therefore, SST regimes would expand the potential range on the Pacific coast equatorward relative to AT.

• 出版日期2010-8