Predicting the Potential Distribution of the Alien Invasive Alligator Gar Atractosteus spatula in China

Dawei Liu, Chunping Xie (), Chi Yung Jim, Yanjun Liu and Senlin Hou ()
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Dawei Liu: Faculty of Criminal Science & Technology, Nanjing Forest Police College, Nanjing 210023, China
Chunping Xie: College of Science, Qiongtai Normal University, Haikou 571127, China
Chi Yung Jim: Department of Social Sciences, Education University of Hong Kong, Tai Po, Hong Kong 999077, China
Yanjun Liu: Faculty of Criminal Science & Technology, Nanjing Forest Police College, Nanjing 210023, China
Senlin Hou: Faculty of Criminal Science & Technology, Nanjing Forest Police College, Nanjing 210023, China

Sustainability, 2023, vol. 15, issue 8, 1-10

Abstract: Alligator gar Atractosteus spatula originates from North America but has been introduced into China recently. Considered an invasive fish, it may cause losses in the diversity and number of local species and in fish catch due to its predation on numerous aquatic animals in non-native habitats. A comprehensive study of this alien invasive species’ existing spatial patterns in relation to climatic variables is critical to understanding the conditions amenable to its distribution and controlling its further spread into potential range areas. We used MaxEnt and QGIS species distribution modeling to estimate the likely biogeographical range of A. spatula in China based on 36 validated distribution records and seven selected environmental variables. The highly suitable area was found primarily in a series of provinces extending from inland to coastal regions, covering southwest to south, central and east China. The model identified the minimum temperature of the coldest month (Bio6) and mean temperature of the warmest quarter (Bio10) as the strongest predictors of A. spatula distribution. The findings could offer scientific guidance for managing and preventing the spread of this invasive fish and hint at controlling invasive aquatic fauna.

Keywords: Atractosteus spatula; invasive species; distribution modeling; environmental factor; potential distribution area (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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