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Evaluation of dissolved carbon dioxide to stimulate emergence of red swamp crayfish Procambarus clarkii (Decapoda: Cambaridae) from infested ponds


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dc.contributorJim Stoeckel, jimstoeckel@auburn.eduen_US
dc.creatorAbdelrahman, Hisham A.
dc.creatorGibson, Rebecca L.
dc.creatorFogelman, Kaelyn J.
dc.creatorCupp, Aaron R.
dc.creatorAllert, Ann L.
dc.creatorStoeckel, James A.
dc.date.accessioned2024-01-25T16:38:06Z
dc.date.available2024-01-25T16:38:06Z
dc.date.created2021
dc.identifier10.3391/mbi.2021.12.4.11en_US
dc.identifier.urihttps://www.reabic.net/journals/mbi/2021/4/MBI_2021_Abdelrahman_etal.pdfen_US
dc.identifier.urihttps://aurora.auburn.edu/handle/11200/50629
dc.identifier.urihttp://dx.doi.org/10.35099/aurora-697
dc.description.abstractInvasive crayfish have adverse effects on habitats and native species. Control of invasive crayfish populations is a major challenge facing natural resource managers. This study evaluated the effectiveness and optimal conditions for the control agent carbon dioxide (CO2), which can be diffused into water to facilitate capture of red swamp crayfish (Procambarus clarkii; RSC). The efficacy of CO2 shows promise in its use for a variety of invasive aquatic species. Here, we evaluate CO2’s ability to stimulate movements towards the shoreline and/or induce complete terrestrial emergence from outdoor ponds. Twelve pond trials were conducted using three, 0.02-ha experimental ponds at Auburn University, Alabama, USA. Silt fencing was installed on dry land around the perimeter of each pond with the lower 0.3 m of fencing accordion-folded to provide shelter and a collection point for emerging crayfish. Each pond was stocked with 100 RSC before testing. Experimental treatment ponds were then injected with gaseous CO2 using porous air diffusers, whereas control ponds (C ponds) received no CO2. Multiple water quality parameters were monitored hourly. Three independent treatment scenarios with CO2 diffusion were crayfish captured at the end of trial only (F: final), crayfish captured hourly (H: hourly), and incorporation of continuous inflow of fresh water at a flow rate of 0.2 L/s into the central catch basin to serve as a refuge with crayfish captured hourly (R: refuge). In control ponds, crayfish were captured at the end of trial only. In F ponds, CO2 diffusion for approximately five hours caused a mean of 12% of total crayfish to emerge from the water. However, capture efficiency was increased to a mean of 45% of total crayfish by increasing collection frequency to every hour and netting submerged crayfish near the water edge in addition to capturing terrestrially emerged crayfish. Presence of a freshwater inflow reduced capture efficiency in R ponds relative to H ponds. Odds of capturing crayfish increased with increasing water temperature, CO2 concentration, crayfish mass, and with decreasing pH. Based on results, we provide a set of predictive equations as well as interactive calculators to help natural resource managers explore several environmental and treatment-related scenarios that predict changes in capture probability in small research ponds. Carbon dioxide shows promises as a tool to increase capture rate of RSC. It is not likely to be 100% effective by itself, but could be a useful component of an integrated management strategy.en_US
dc.formatPDFen_US
dc.publisherRegional Euro-Asian Biological Invasions Centreen_US
dc.relation.ispartofManagement of Biological Invasionsen_US
dc.relation.ispartofseries1989-8649en_US
dc.rightsCreative Commons Attribution 4.0 International (CC-BY)en_US
dc.subjectbiological invasionsen_US
dc.subjectchemical controlen_US
dc.subjectinvasive crayfish infestationen_US
dc.subjectinvaded pondsen_US
dc.subjectintegrated pest management programsen_US
dc.subjectinvasive species controlen_US
dc.subjectcrayfish capture freqencyen_US
dc.titleEvaluation of dissolved carbon dioxide to stimulate emergence of red swamp crayfish Procambarus clarkii (Decapoda: Cambaridae) from infested pondsen_US
dc.typeTexten_US
dc.type.genreJournal Article, Academic Journalen_US
dc.citation.volume12en_US
dc.citation.issue4en_US
dc.citation.spage952en_US
dc.citation.epage974en_US
dc.creator.orcid0000-0001-5621-3185en_US

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