Interspecific Shelter Competition between the Sympatric Crayfish Species Procambarus clarkii (Girard) and Procambarus zonangulus (Hobbs and Hobbs)

Blank, Grant S.; Figler, Michael H.

doi:10.2307/1548887

Cited by 46 publications

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“…The establishment of a hierarchy has been shown to play a fundamental role in the acquisition and defense of shelters in many marine (e.g., fiddler crabs (Hyatt and Salmon 1978); lobsters (O'Neill and Cobb 1979;Cowan and Atema 1990)) and freshwater decapods (e.g., crayfish (Penn and Fitzpatrick 1963;Bovbjerg 1970;Capelli and Munjal 1982;Garvey et al 1994;Blank and Figler 1996)). The crayfish literature reports several examples of dominant species competitively excluding subordinate crayfish from sheltered areas (Capelli and Munjal 1982;Söderbäck 1991;Blank and Figler 1996), whereas the availability of shelter-providing substrates constitutes one of the most important variables related to crayfish abundance (Capelli and Magnuson 1983).…”

Section: Discussionmentioning

confidence: 99%

“…The crayfish literature reports several examples of dominant species competitively excluding subordinate crayfish from sheltered areas (Capelli and Munjal 1982;Söderbäck 1991;Blank and Figler 1996), whereas the availability of shelter-providing substrates constitutes one of the most important variables related to crayfish abundance (Capelli and Magnuson 1983). Similar results were obtained in laboratory studies in which dyads of invasive and indigenous crayfish species were compared for their agonistic potential (P. leniusculus and A. astacus (Söderbäck 1991); P. leniusculus and A. torrentium (Vorburger and Ribi 1999); and P. leniusculus and C. japonicus (Usio et al 2001;Nakata and Goshima 2003)).…”

Section: Discussionmentioning

confidence: 99%

“…Because of their dimensions, shelters could be occupied by only one animal at a time. Pilot tests showed that the two species did not show consistently different occupancy of differently colored PVC pipes (in contrast, black shelters were preferred by the populations of P. zonangulus and P. clarkii studied by Blank and Figler 1996). During the isolation phase, shelter occupancy was recorded for 1 h/day.…”

Section: Experiments 2: Competition For a Sheltermentioning

confidence: 94%

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Agonism and shelter competition between invasive and indigenous crayfish species

Gherardi¹,

Daniels²

2004

Can. J. Zool.

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Several crayfish species behave as biological invaders. Their establishment in an area has frequently been accompanied by the reduction or elimination of indigenous species. A laboratory study was designed to investigate whether the invasive crayfish Procambarus clarkii (Girard, 1852) is dominant over the indigenous (to Delaware) crayfish Procambarus acutus acutus (Girard, 1852) in either the absence or the presence of a shelter as a limited resource. As expected, we found that P. clarkii is more aggressive than the similarly sized P. a. acutus, thus confirming previous studies that demonstrated an inherent dominance of the invasive over the indigenous crayfish. We then hypothesized that species showing a lower preference for an offered shelter (P. clarkii) should be less motivated to defend it. To the contrary, in a competitive context P. clarkii excluded P. a. acutus from the shelter but did not use the resource. Caution must be used in extrapolating these laboratory studies to the field, and future studies should analyze multiple factors, including the autoecology of the two species and their reproductive potential and recruitment patterns. However, our results might help in highlighting the risks for freshwater biodiversity created by the uncontrolled translocations of P. clarkii and other similar invasive species.Résumé : Plusieurs espèces d'écrevisses se comportent comme des envahisseurs biologiques. Leur établissement dans une région s'accompagne souvent de la réduction ou de l'élimination des espèces indigènes. Nous avons mis au point une étude de laboratoire pour voir si l'écrevisse envahissante Procamburus clarkii (Girard, 1852) est dominante par rapport à l'écrevisse indigène (au Delaware) Procamburus acutus acutus (Girard, 1852) en présence ou en absence d'abris comme ressource limitée. Comme prévu, P. clarkii est plus agressif que P. a. acutus, un animal de même taille, ce qui confirme les études antérieures qui ont démontré l'existence d'une dominance inhérente de l'écrevisse envahissante par rapport à l'indigène. Nous avons alors posé l'hypothèse selon laquelle l'espèce qui montre le moins de préfé-rence pour l'abri offert (P. clarkii) devrait être moins motivée pour le défendre. Au contraire, dans une situation de compétition, P. clarkii élimine P. a. acutus de l'abri, sans pour autant s'en servir lui-même. Il faut être prudent en extrapolant ces résultats de laboratoire aux situations de terrain; les études futures devront analyser plusieurs facteurs, dont l'autécologie des deux espèces, leur potentiel reproductif et leurs patterns de recrutement. Néanmoins, nos résul-tats peuvent servir à souligner les risques pour la biodiversité créés par les transferts incontrôlés de P. clarkii et d'autres espèces envahissantes semblables.[Traduit par la Rédaction] Gherardi and Daniels 1932

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Experiments 2: Competition For a Sheltermentioning

confidence: 94%

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Agonism and shelter competition between invasive and indigenous crayfish species

Gherardi¹,

Daniels²

2004

Can. J. Zool.

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“…In the second set of experiments (shelter competition, SH), the shelter was a 10 cm-long piece of a rigid, gray and straight PVC pipe (4 cm internal diameter). This artificial shelter had the length and the internal diameter suitable for the size range of the individuals under study (Nakata & Goshima, 2003); preliminary tests had shown that different colored PVC pipes were occupied to the same extent by the three study species (to the contrary, black shelters were preferred by Procambarus zonangulus and P. clarkii studied by Blank & Figler, 1996). During isolation, individuals were accustomed to the shelter for the first five days of isolation.…”

Section: Experiments 2: Competition For a Resourcementioning

confidence: 99%

Agonism and interference competition in freshwater decapods

Cioni¹,

Gherardi²

2004

Behav

105

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SummaryWe tested the hypothesis that agonistic behavior and interference competition induce species replacements in freshwater decapods. Our model organisms were two crayfish (the indigenous Austropotamobius italicus and the non-indigenous and invasive Procambarus clarkii) and the indigenous river crab Potamon fluviatile. A first experiment was aimed at analyzing the agonistic behavior of similarly-sized males in pairs of the three species combinations. Records were taken for an hour per day during five consecutive days of combats. Results showed that P. fluviatile was dominant over the two crayfish species and P. clarkii over A. italicus, as confirmed by their field distribution. In nature, the non-indigenous species might even reach higher levels of dominance over A. italicus. In fact, both the larger body size and the 'stronger' chelae of P. clarkii can induce asymmetries in fighting ability. Pairs composed of the non-indigenous crayfish and either A. italicus or P. fluviatile did not form stable hierarchies, possibly due to the failure of status recognition. In a second set of experiments, the agonistic behavior of the three species combinations was studied in the presence of either food (earthworms) or an artificial shelter (a 10 cm-long piece of a PVC pipe). As expected, resources influenced fighting and dominance translated into a differential capability to compete. In a third experiment, in which we measured shelter use by each species in a non-competitive context, shelters were more extensively occupied by A. italicus (which is dependent on natural crevices as hiding places) than by the other two species (which usually dig burrows). We expected that Potamon and Procambarus would gain less from occupying the offered shelter than Austropotamobius, and therefore their defense should be less vigorous. To the contrary, the presence of a rival strengthened the attraction to the shelter of these two species, in particular when river crabs were opposed to A. italicus.

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“…By contrast, subordinate crayfish retreat, often via an escape tail flip, in response to certain stimuli such as the presence of an opponent (Huber et al, 1997;Krasne et al, 1997;Edwards et al, 2003). Dominant crayfish also approach a conspecific more frequently than do subordinate crayfish (Copp, 1986;Blank and Figler, 1996). When space is limited, burrowing, which creates a shelter, is important and dominant crayfish burrow significantly more than do subordinate crayfish .…”

Section: Introductionmentioning

confidence: 99%

Duration of socialization influences responses to a mirror: responses of dominant and subordinate crayfish diverge with time of pairing

May

Mercier

2007

Journal of Experimental Biology

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Interspecific Shelter Competition between the Sympatric Crayfish Species Procambarus clarkii (Girard) and Procambarus zonangulus (Hobbs and Hobbs)

Cited by 46 publications

References 0 publications

Agonism and shelter competition between invasive and indigenous crayfish species

Agonism and shelter competition between invasive and indigenous crayfish species

Agonism and interference competition in freshwater decapods

Duration of socialization influences responses to a mirror: responses of dominant and subordinate crayfish diverge with time of pairing

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