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Scholl LE, Sultana T, Metcalfe C, Dew WA. Clothianidin interferes with recognition of a previous encounter in rusty crayfish (Faxonius rusticus) due to a chemosensory impairment. CHEMOSPHERE 2022; 296:133960. [PMID: 35167832 DOI: 10.1016/j.chemosphere.2022.133960] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 02/07/2022] [Accepted: 02/10/2022] [Indexed: 06/14/2023]
Abstract
Clothianidin, a neonicotinoid insecticide that binds to arthropod nicotinic acetylcholine receptors, is widely used to protect plants against a wide variety of agricultural pests. Little is known about how this insecticide affects non-target invertebrate species in aquatic environments. In this study, we explored the effects of aqueous exposures of clothianidin on locomotion, chemosensory-based responses, and agonistic encounters of rusty crayfish (Faxonius rusticus). Clothianidin exposures at a concentration of 1.0 μg/L (i.e., 1.0 ppb) did not alter initiations and retreats, but did increase the amount of time the crayfish interacted per interaction. In a subsequent food cue experiment with crayfish exposed to clothianidin concentrations of 0.4 μg/L and 1.0 μg/L, the test organisms demonstrated chemosensory dysfunction, but no decrease in locomotory movement. As chemosensation is essential for recognizing previous rivals in crayfish, the loss of this sense likely resulted in the exposed crayfish being unable to detect cues used to recognize a previous competitor. An inability to recognize a previous competitor (and who won or lost the previous interaction) could result in crayfish spending more time fighting and less time on foraging and reproduction. This study demonstrates that exposures of crayfish to clothianidin at concentrations found in the environment affects the behavioural ecology of these aquatic invertebrates.
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Affiliation(s)
- Lee E Scholl
- Department of Biology, Trent University, Peterborough, Ontario, K9J 0G2, Canada
| | - Tamanna Sultana
- Water Quality Centre, Trent University, Peterborough, ON, K9J 0G2, Canada
| | - Chris Metcalfe
- Water Quality Centre, Trent University, Peterborough, ON, K9J 0G2, Canada
| | - William A Dew
- Department of Biology, Trent University, Peterborough, Ontario, K9J 0G2, Canada; Department of Biology, Algoma University, Sault Ste. Marie, ON, P6A 2G4, Canada.
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2
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Driscoll J, Kola M, Mathews L. Perception of alarm cues influences the outcome of shelter competition in crayfish20. Ethology 2020. [DOI: 10.1111/eth.13011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Joshua Driscoll
- Department of Biology Worcester Polytechnic Institute Worcester Massachusetts
| | - Michael Kola
- Department of Biology Worcester Polytechnic Institute Worcester Massachusetts
| | - Lauren Mathews
- Department of Biology Worcester Polytechnic Institute Worcester Massachusetts
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3
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Neville CM, Cubbage ML, Stewart MR, Grant CJ, Muth NZ. Local Ecosystem Uptake of Stocked Trout by Cambarus bartonii and the Relevance of Prior Exposure to Stocking. Northeast Nat (Steuben) 2020. [DOI: 10.1656/045.027.0110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Affiliation(s)
| | | | | | | | - Norris Z. Muth
- Juniata College, 1700 Moore Street, Huntingdon, PA 16652
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4
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Kamran M, Moore ME, Fisher AM, Moore PA. Examination of Homing Behaviors in Two Species of Crayfish Following Translational Displacements. Integr Org Biol 2019; 1:obz008. [PMID: 33791524 PMCID: PMC7671143 DOI: 10.1093/iob/obz008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Crayfish have been model systems for examining complex behaviors and the underlying neural mechanisms that guide these behaviors. While spatial learning has been examined in a subset of crayfish species, homing behaviors remained largely unexamined. Here we examined homing behavior following translational displacements in a primary burrowing (Creaserinus fodiens) and tertiary burrowing species (Faxonius rusticus). Individuals of both species were placed in an arena with artificial burrows embedded within the arena floor. The arena floor was fitted with a panel, which served as a treadmill belt to allow for translational displacement. Individuals were displaced after they had left the burrows. The movement pathways of displaced crayfish were compared with those in two control groups, one which underwent no displacement and the second in which the treadmill belt was displaced but returned to its original position almost immediately. Homing success for displaced individuals of both species was considerably reduced in comparison to the control groups. Moreover, displaced primary burrowers had significantly lower homing success in comparison to displaced tertiary burrowers. Primary burrowers exhibited greater homing error and significantly impaired homing behaviors compared with tertiary burrowers. Furthermore, heading angles in displaced groups (of both species) were significantly higher than the control group of both species. Species-specific differences in homing success and homing error indicate that primary burrowers were more negatively impacted by translational displacements. These homing differences indicate that these two species of crayfish have differing homing strategies.
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Affiliation(s)
- Maryam Kamran
- Department of Fisheries and Wildlife, Oregon State University, Corvallis, OR 97330, USA
| | - Meghan E Moore
- Department of Psychology, Bowling Green State University, Bowling Green, OH 43403, USA
| | - Andrea M Fisher
- Department of Biological Sciences, University of South Florida St. Petersburg, St. Petersburg, FL 33701, USA
| | - Paul A Moore
- J.P. Scott Center for Neuroscience, Mind & Behavior, Departments of Biological Sciences and Psychology, Bowling Green State University, Bowling Green, OH 43403, USA.,Laboratory for Sensory Ecology, Department of Biological Sciences, Bowling Green State University, Bowling Green, OH 43403, USA
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5
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Kenison EK, Weldy PY, Williams RN. There must be something in the water: assessing the behavioral responses of rusty crayfish (Orconectes rusticus) to fish and amphibian predator kairomones. J ETHOL 2017. [DOI: 10.1007/s10164-017-0529-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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6
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Kats LB, Dill LM. The scent of death: Chemosensory assessment of predation risk by prey animals. ECOSCIENCE 2016. [DOI: 10.1080/11956860.1998.11682468] [Citation(s) in RCA: 670] [Impact Index Per Article: 83.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Polačik M, Jurajda P, Blažek R, Janáč M. Carcass feeding as a cryptic foraging mode in round goby Neogobius melanostomus. JOURNAL OF FISH BIOLOGY 2015; 87:194-199. [PMID: 26010420 DOI: 10.1111/jfb.12708] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 03/24/2015] [Indexed: 06/04/2023]
Abstract
Round gobies Neogobius melanostomus were observed readily consuming soft tissue from carcasses of larger fishes under both laboratory and field conditions. Consumption normally progressed in a typical sequence, starting with soft and easily accessible tissues such as the eyes, followed by puncture of the abdominal cavity, gut consumption and then muscle consumption. Carcass feeding has not previously been seen in N. melanostomus and has potential consequences for transfer of nutrients and contaminants.
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Affiliation(s)
- M Polačik
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Květná 8, 603 65 Brno, Czech Republic
| | - P Jurajda
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Květná 8, 603 65 Brno, Czech Republic
| | - R Blažek
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Květná 8, 603 65 Brno, Czech Republic
| | - M Janáč
- Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, Květná 8, 603 65 Brno, Czech Republic
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8
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Kamran M, Moore PA. Comparative Homing Behaviors in Two Species of Crayfish,Fallicambarus FodiensandOrconectes Rusticus. Ethology 2015. [DOI: 10.1111/eth.12392] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Maryam Kamran
- Laboratory for Sensory Ecology; Department of Biological Sciences and J.P. Scott Center for Neuroscience, Mind and Behavior; Bowling Green State University; Bowling Green OH USA
| | - Paul A. Moore
- Laboratory for Sensory Ecology; Department of Biological Sciences and J.P. Scott Center for Neuroscience, Mind and Behavior; Bowling Green State University; Bowling Green OH USA
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Lahman SE, Trent KR, Moore PA. Sublethal copper toxicity impairs chemical orientation in the crayfish, Orconectes rusticus. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 113:369-77. [PMID: 25531834 DOI: 10.1016/j.ecoenv.2014.12.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Revised: 12/03/2014] [Accepted: 12/10/2014] [Indexed: 05/09/2023]
Abstract
Before reaching concentrations that are high enough to cause mortality, elevated levels of chemical pollution can significantly alter a keystone indicator species' ability to extract sensory information. To organisms that rely on chemical signals to make crucial ecological decisions, increased amounts of a pollutant may impact chemoreceptive abilities by altering the perception of the sensory landscape or impairing the functioning of sensory organs. Heavy metal pollutants entering an aquatic ecosystem are of increasing concern due to discernible effects on chemoreception in many ecologically and economically important species. In order to determine the effects of sublethal copper toxicity on chemically mediated behavior, male and female rusty crayfish, Orconectes rusticus, were exposed to ecologically relevant concentrations of copper (4.5, 45, and 450 µg/l) for 120 h. Following exposure, crayfish were allowed to orient toward a food odor stimulus. During orientation trials, select crayfish oriented under a point or nonpoint source copper background pollutant at the same concentration as the exposure period. Orientation trials were videotaped and analyzed using EthoVision XT 8.5 (Noldus Information Technology, The Netherlands) for differences in overall success in locating the food source and orienting parameters. Significant differences were found in the overall orientation ability of O. rusticus to locate an odor source when previously exposed to copper in combination with a source of pollution in the background of orientation trials. Crayfish exposed to copper in any capacity during the experiment (regardless of concentration or background during trials) showed slower walking speeds toward the source, decreased turning angles, increased heading angles toward the source, and decreased upstream heading angles. Results from this experiment support that copper impairs the ability of crayfish to detect, process, and/or respond appropriately to chemosensory information in order to successfully localize a food odor source.
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Affiliation(s)
- Sara E Lahman
- Laboratory for Sensory Ecology, J. P. Scott Center for Neuroscience, Mind and Behavior, Department of Biological Sciences, Bowling Green State University, Bowling Green, OH 43403, United States
| | - Kaitlyn R Trent
- Laboratory for Sensory Ecology, J. P. Scott Center for Neuroscience, Mind and Behavior, Department of Biological Sciences, Bowling Green State University, Bowling Green, OH 43403, United States
| | - Paul A Moore
- Laboratory for Sensory Ecology, J. P. Scott Center for Neuroscience, Mind and Behavior, Department of Biological Sciences, Bowling Green State University, Bowling Green, OH 43403, United States.
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Karjalainen J, Ruokonen TJ, MarjomäKi TJ, Martikainen A, Pursiainen M, Sarvala J, Tarvainen M, Ventelä AM. Predation by signal crayfish Pacifastacus leniusculus on fish eggs and its consequences for coregonid recruitment. JOURNAL OF FISH BIOLOGY 2015; 86:651-667. [PMID: 25605004 DOI: 10.1111/jfb.12588] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2014] [Accepted: 10/17/2014] [Indexed: 06/04/2023]
Abstract
The character and magnitude of predation by the invasive, ectothermic Pacifastacus leniusculus, a crayfish widely introduced to Europe and Japan from North America, on the eggs of coregonid fishes, vendace Coregonus albula and whitefish Coregonus lavaretus were examined by experimentation, modelling and field data. The present results showed that P. leniusculus has the potential to be very efficient predator of fish eggs under winter conditions, but the predation by P. leniusculus did not significantly decrease production of coregonid larvae during the years with a high P. leniusculus population in the study lake. Hence, the mortality caused by the novel invertebrate predator appeared to compensate for other yet unexplored mortality factors instead of having an additive effect on the present salmonids.
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Affiliation(s)
- J Karjalainen
- Department of Biological and Environmental Science, P. O. Box 35, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - T J Ruokonen
- Department of Biological and Environmental Science, P. O. Box 35, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - T J MarjomäKi
- Department of Biological and Environmental Science, P. O. Box 35, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - A Martikainen
- Department of Biological and Environmental Science, P. O. Box 35, University of Jyväskylä, 40014 Jyväskylä, Finland
| | - M Pursiainen
- Finnish Game and Fisheries Institute, Survontie 9/Technopolis, 40500 Jyväskylä, Finland
| | - J Sarvala
- Department of Biology, University of Turku, FI-20014 Turku, Finland
| | - M Tarvainen
- Pyhäjärvi Institute, Sepäntie 7, 27500 Kauttua, Finland
| | - A-M Ventelä
- Pyhäjärvi Institute, Sepäntie 7, 27500 Kauttua, Finland
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11
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Chemical Orientation Strategies of the Crayfish are Influenced by the Hydrodynamics of their Native Environment. AMERICAN MIDLAND NATURALIST 2015. [DOI: 10.1674/0003-0031-173.1.17] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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Edwards BA, Lewis VR, Rodd FH, Jackson DA. Interactive effects of calcium decline and predation risk on the potential for a continuing northward range expansion of the rusty crayfish (Orconectes rusticus). CAN J ZOOL 2013. [DOI: 10.1139/cjz-2012-0302] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Over the last three decades, the rusty crayfish (Orconectes rusticus (Girard, 1852)) has been expanding its range northward via human-mediated dispersal. If this species is to continue expanding its range northward, it will move onto the Canadian Shield, where calcium (Ca) availability is low and is predicted to decline further in the future. Dissolved Ca is a vital functional component of mollusc and crustacean physiology, important for exoskeletal condition and strength, as well as metabolic activity. However, some organisms are able to compensate for reduced structural integrity by modifying their behaviour. In this study, we asked if the invasive O. rusticus can survive low levels of ambient Ca and, if it can, whether it exhibits modified antipredator behavior in response to the physiological limitations imposed by low [Ca]. We found that, under reduced Ca levels, O. rusticus reduced the frequency of standard activities (such as grooming and foraging) and was more likely to engage in vigilance and (or) escape behavior. We also found that some individuals, in extremely low [Ca], died while molting. This study suggests that Ca limitation on the Shield, especially where predators are present, may limit the northward expansion of O. rusticus beyond their current range limit.
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Affiliation(s)
- Brie A. Edwards
- Department of Ecology and Evolutionary Biology, University of Toronto, 25 Harbord Street, Toronto, ON M5S 3G5, Canada
| | - Vern R.E. Lewis
- Department of Biological Sciences, Brock University, St. Catharines, ON L2S 3A1, Canada
| | - F. Helen Rodd
- Department of Ecology and Evolutionary Biology, University of Toronto, 25 Harbord Street, Toronto, ON M5S 3G5, Canada
| | - Donald A. Jackson
- Department of Ecology and Evolutionary Biology, University of Toronto, 25 Harbord Street, Toronto, ON M5S 3G5, Canada
- School of the Environment, University of Toronto, 25 Harbord Street, Toronto, ON M5S 3E8, Canada
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13
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Huntsman BM, Venarsky MP, Benstead JP. Relating carrion breakdown rates to ambient resource level and community structure in four cave stream ecosystems. ACTA ACUST UNITED AC 2011. [DOI: 10.1899/10-116.1] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Brock M. Huntsman
- Department of Biological Sciences, University of Alabama, Tuscaloosa, Alabama 35487 USA
| | - Michael P. Venarsky
- Department of Biological Sciences, University of Alabama, Tuscaloosa, Alabama 35487 USA
| | - Jonathan P. Benstead
- Department of Biological Sciences, University of Alabama, Tuscaloosa, Alabama 35487 USA
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14
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Consumptive effects of fish reduce wetland crayfish recruitment and drive species turnover. Oecologia 2011; 168:1111-21. [DOI: 10.1007/s00442-011-2162-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Accepted: 09/30/2011] [Indexed: 10/16/2022]
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15
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Pintor LM, Sih A, Bauer ML. Differences in aggression, activity and boldness between native and introduced populations of an invasive crayfish. OIKOS 2008. [DOI: 10.1111/j.1600-0706.2008.16578.x] [Citation(s) in RCA: 132] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Pintor LM, Sih A, Bauer ML. Differences in aggression, activity and boldness between native and introduced populations of an invasive crayfish. OIKOS 2008. [DOI: 10.1111/j.0030-1299.2008.16578.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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17
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Does juvenile competition explain displacement of a native crayfish by an introduced crayfish? Biol Invasions 2008. [DOI: 10.1007/s10530-008-9286-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Corkum LD, Belanger RM. Use of chemical communication in the management of freshwater aquatic species that are vectors of human diseases or are invasive. Gen Comp Endocrinol 2007; 153:401-17. [PMID: 17367788 DOI: 10.1016/j.ygcen.2007.01.037] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2006] [Revised: 01/23/2007] [Accepted: 01/28/2007] [Indexed: 10/23/2022]
Abstract
Chemical communication occurs when both originator (signaller) and one or more receiver(s) possess specializations for chemical exchange of information. Chemical information can be used by a wide variety of species to locate food and mates, avoid predators and engage in social interactions. In this review, we focus on chemical signalling between mates or cues from nest sites or hosts by selected aquatic pest species and indicate how chemical information can be used to manage pests. The pests are vectors of disease (blood-sucking insects) or invasive species (crayfishes and fishes) that have exhibited detrimental effects on indigenous species. Pheromones released by females attract and stimulate males in some taxa (insects, crayfish, goldfish, and crucian carp), whereas pheromones released by males attract females in others (round goby, sea lamprey). Other chemicals (e.g., habitat odours or odours given off by developmental stages of conspecifics) can affect oviposition decisions of pest species. In areas of aquatic environments where other cues may be limited (e.g., visual), freshwater organisms may rely solely on chemical signals or in concert with environmental cues for reproduction. Once the chemical structure of odour attractants are identified and shown to lure conspecifics to traps, odorants or their blends can be used to control the aquatic pests. There is promise for the application of pheromone traps to control the malarian vector (Anopheles gambiae) or invasive species such as signal crayfish (Pacifastacus leniusculus), sea lamprey (Petromyzon marinus) and the round goby (Neogobius melanostomus) by disrupting the reproductive behaviours of these species.
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Affiliation(s)
- Lynda D Corkum
- Department of Biological Sciences, University of Windsor, Windsor, ON, Canada N9B 3P4.
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19
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Height SG, Whisson GJ. Behavioural responses of Australian freshwater crayfish (Cherax cainii and Cherax albidus) to exotic fish odour. AUST J ZOOL 2006. [DOI: 10.1071/zo06011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Exotic finfish and crayfish have been translocated into Western Australia for more than 100 years. Deliberate stocking and subsequent escape from man-made impoundments have resulted in widespread distribution of non-native yabbies (Cherax albidus) and the exotic redfin perch (Perca fluviatilis) in the State’s south-west. Both species are considered invasive and are known to compete with indigenous species for resources. The nature and degree of impact on native marron (Cherax cainii) is unclear and the subject of current debate. Other researchers have hypothesised that invasive species modify their behaviour in the presence of predators in a more rapid and advantageous manner than native species. This greater behavioural plasticity can result in displacement of indigenous species and successful colonisation of invaders. The aim of this study was to investigate behavioural responses of an indigenous crayfish (C. cainii) and an invasive crayfish (C. albidus) to odours from a native predator (Tandanus bostocki) and an exotic predatory fish (P. fluviatilis) present in Western Australia. Crayfish behaviour was observed in individual glass tanks following the addition of odours from native (T. bostocki) or exotic (P. fluviatilis) finfish predators. Marron exhibited minor behavioural modifications when presented with odours from native or exotic finfish. In contrast, the invasive yabby showed greater detection of odours, displaying significant changes in behaviour (P < 0.05). Yabbies also appeared to distinguish between food odour (commercial crayfish feed) and predator odour; however, neither marron nor yabbies displayed behaviour indicating that they could distinguish between a native or exotic fish predator. Results support the hypothesis that invasive crayfish species have a greater capacity for behavioural plasticity than non-invasive crayfish.
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Abstract
1. We examined the effects of multiple predators from an intertidal boulder food web to test whether and how three different predator species affected the survival of a small amphipod species. 2. Predators were chosen because they differ in their foraging mode, two feeding at the bottom and in benthic refuges (nemertean and shrimp) and one in the water-column (juveniles of a fish). 3. Mortality of amphipods was not affected by nemerteans, but was high in the presence of shrimp or fish. Highest mortalities were observed in predator-combinations that contained both shrimp and fish. Amphipods responded to shrimp by escaping into the water column, while they avoided fish by remaining in the refuge. We conclude that predator-specific defence causes conflicts for prey when both shrimp and fish are present. 4. Comparing observed effects of multiple predators with expected effects revealed risk enhancement for the shrimp + fish combination. A comparison of different predictive models revealed that the multiplicative model was most appropriate, although additive models may work well under certain conditions. 5. Based on known consumption-ranges of the predators used, we conclude that nemerteans were saturated with prey while fish were far from their saturation point. A predator's functional response curve (prey consumption in relation to prey abundance) determines its impact on prey populations. This knowledge appears essential in order to predict whether prey organisms face risk enhancement, risk reduction or additive effects of multiple predators.
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Adams JA, Tuchman NC, Moore PA. Atmospheric CO2 enrichment alters leaf detritus: impacts on foraging decisions of crayfish (Orconectes virilis). ACTA ACUST UNITED AC 2003. [DOI: 10.2307/1468271] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Julie A. Adams
- Laboratory for Sensory Ecology and the Department of Biological Sciences, Bowling Green State University, Bowling Green, Ohio 43403 USA and The University of Michigan Biological Station, 9008 Biological Rd., Pellston, Michigan USA 49769
| | - Nancy C. Tuchman
- Department of Biology, Loyola University Chicago, 6525 N. Sheridan Road, Chicago, Illinois 60626 USA and The University of Michigan Biological Station, 9008 Biological Rd., Pellston, Michigan USA 49769
| | - Paul A. Moore
- Laboratory for Sensory Ecology and the Department of Biological Sciences, Bowling Green State University, Bowling Green, Ohio 43403 USA and The University of Michigan Biological Station, 9008 Biological Rd., Pellston, Michigan USA 49769
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LODGE DAVIDM, STEIN ROYA, BROWN KENNETHM, COVICH ALANP, BRONMARK CHRISTER, GARVEY JAMESE, KLOSIEWSKT STEVENP. Predicting impact of freshwater exotic species on native biodiversity: Challenges in spatial scaling. AUSTRAL ECOL 1998. [DOI: 10.1111/j.1442-9993.1998.tb00705.x] [Citation(s) in RCA: 206] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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23
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Lima SL. Stress and Decision Making under the Risk of Predation: Recent Developments from Behavioral, Reproductive, and Ecological Perspectives. ADVANCES IN THE STUDY OF BEHAVIOR 1998. [DOI: 10.1016/s0065-3454(08)60366-6] [Citation(s) in RCA: 880] [Impact Index Per Article: 33.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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