One step ahead of the enemy: investigating aggressive interactions between invasive and native crayfish before the contact in nature

Dalosto, Marcelo M.; Palaoro, Alexandre V.; Souty‐Grosset, Catherine; Bueno, Sérgio Luiz de Siqueira; Loureiro, Tainã Gonçalves; Almerão, Maurício Pereira; Araujo, Paula Beatriz; Santos, Sandro

doi:10.1007/s10530-015-0974-4

Cited by 12 publications

(7 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar to patterns in dominance, invasive crayfish species generally exhibit more agonistic behaviours than do their native contestants (Dalosto et al 2015). As was the case with dominance, this trend extends to the interactions between C. quadricarinatus and C. destructor observed in this study, with C. quadricarinatus exhibiting predominately agonistic behaviours and C. destructor exhibiting predominately submissive behaviours.…”

Section: Agonistic Behaviourssupporting

confidence: 77%

“…The whole interaction was video recorded with all persons removed from the laboratory to prevent observer effects. Each experiment occurred at night between 1900 and 2400 hours, illuminated with a red light that is a spectrum that crayfish cannot detect (Dalosto et al 2015). After the experimental period, the two individuals were returned to their separate aquaria and fed.…”

Section: Competition Experimentsmentioning

confidence: 99%

“…Each recorded experiment was viewed, and the interactions were recorded following the procedures of Dalosto et al (2015) and Moore (2007). The amount of time an individual spent within 1 cm of the food resource without the competitor was considered 'time in possession of the food resource' (TPFR) and was regarded as an individual's capacity to dominate a food resource.…”

Section: Behavioural Observationsmentioning

confidence: 99%

“…The number of agonistic bouts, in which both individuals were initiated in a fight lasting at least 10 s, was also recorded. The individual that retreated first was identified as the loser, with the crayfish that won the most of these interactions identified as the winner (Dalosto et al 2015). All interactions were scored through the behavioural ethogram presented in Table 1 (modified from Moore 2007).…”

Section: Behavioural Observationsmentioning

confidence: 99%

See 3 more Smart Citations

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

et al. 2022

View full text Add to dashboard Cite

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

show abstract

Section: Agonistic Behaviourssupporting

confidence: 77%

Section: Competition Experimentsmentioning

confidence: 99%

Section: Behavioural Observationsmentioning

confidence: 99%

Section: Behavioural Observationsmentioning

confidence: 99%

See 2 more Smart Citations

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

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Molting is inversely related in both sexes to sexual maturity [20,57], which in turn is directly related to temperature, especially in females. In the crayfish monitored from July 2018 to July 2019, a correlation between molting and the reproductive stage of the specimens also emerged, with a higher molting frequency corresponding to a low percentage of sexually active males or females in the pre-or post-spawning phase (with immature ovarian eggs).…”

Section: Discussionmentioning

confidence: 99%

Population Ecology and Genetic Diversity of the Invasive Alien Species Procambarus clarkii in Lake Trasimeno (Italy)

Dörr

Scoparo

Cardinali

et al. 2021

Biology

View full text Add to dashboard Cite

The deliberate or accidental introduction of invasive alien species (IAS) causes negative ecological and economic impacts altering ecosystem processes, imperiling native species and causing damage to human endeavors. A monthly monitoring program was performed in Lake Trasimeno (Central Italy) from July 2018 to July 2019 in order to provide an upgrade of the population ecology of Procambarus clarkii and to assess the genetic diversity by analyzing the relationships among mitochondrial DNA diversity. Our results confirmed that P. clarkii is well acclimatized in the lake, revealing a stable population structure favored by the resources and conditions typical of this ecosystem, which seem to be optimal for the maintenance of the species. Four distinct mitochondrial haplotypes were detected, but one of them was clearly overrepresented (76%), suggesting that a single predominant introduction event may have occurred in this area, likely followed by secondary events. The identification of the typical genetic variants provides a better understanding of the evolutionary scenarios of P. clarkii in this biotope and it can be helpful in management plans concerning the expanding populations of this invasive alien species.

show abstract

Aquarium molluscs as a case study in risk assessment of incidental freshwater fauna

et al. 2017

View full text Add to dashboard Cite

One step ahead of the enemy: investigating aggressive interactions between invasive and native crayfish before the contact in nature

Cited by 12 publications

References 60 publications

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

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

Population Ecology and Genetic Diversity of the Invasive Alien Species Procambarus clarkii in Lake Trasimeno (Italy)

Aquarium molluscs as a case study in risk assessment of incidental freshwater fauna

Contact Info

Product

Resources

About