Do opposites attack? Resource interactions between an alien and native crayfish from the Lake Eyre Basin

نویسندگان

چکیده

Context Investigating resource competition between introduced and native species is important to understand the impacts of invasive species, not only on but also with respect wider ecosystem. Within Lake Eyre Basin, there concern that feral populations tropical Cherax quadricarinatus are outcompeting basins’ crayfish temperate–subtropical destructor. Aims This study sought observe behavioural inter-specific food juvenile C. destructor under experimental conditions inform whether has potential outcompete populations. Methods Interactions were quantified by establishing a intensity score, dominance score recording total time in possession range interspecific intraspecific pairings at 26°C. Key results had significantly higher (z = −2.276, P 0.023) (t 4.723, < 0.001) than did destructor, was no difference two for −1.334, 0.182). Conclusions implications These have significant ecological because capacity displace keystone irreversibly alter ecosystem function invaded habitats.

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ژورنال

عنوان ژورنال: Marine and Freshwater Research

سال: 2022

ISSN: ['1448-6059', '1323-1650']

DOI: https://doi.org/10.1071/mf21302