Force recordings during escape responses by Placopecten magellanicus (Gmelin): Seasonal changes in the impact of handling stress

Guderley, Helga; Janssoone, Xavier; Nadeau, Madeleine; Bourgeois, Mélanie; Cortés, Hernán Pérez

doi:10.1016/j.jembe.2007.06.037

Cited by 22 publications

(8 citation statements)

References 30 publications

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“…In addition, because of restraint during stimulation, swimming speed or distance travelled during the escape response was not measured and so the translation of the variable individual clap rates into an actual threedimensional spatial response was not possible in this study. Force production measured during the escape responses of Placopecten magellanicus (Fleury et al, 2005;Guderley et al, 2008;Guderley et al, 2009) and Argopecten purpuratus Guderley et al, 2011) has shown considerable inter-individual variation. Similarly, data presented for the relationship between number of claps and the linear distance travelled by Pecten maximus opercularis.…”

Section: Discussionmentioning

confidence: 99%

Repeatability of escape response performance in the queen scallop (Aequipecten opercularis)

Laming

Jenkins

McCarthy

2013

Journal of Experimental Biology

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SUMMARYIn order for natural selection to operate, physiological and behavioural traits must exhibit both inter-individual variability and intra-individual consistency (i.e. repeatability) in performance. In this study, we describe individual variation and temporal repeatability in the escape responses of the queen scallop, Aequipecten opercularis, and determine whether individuals exhibited consistently high or low rankings in different aspects of the escape response. Five measures of individual performance were recorded on four occasions (days 0, 2, 7 and 28), providing proxies for sensory acuity (response latency), immediate and sustained swimming performance (burst and average clap rates), and swimming endurance (total number of claps and total time spent clapping). All components of the escape response exhibited significant inter-individual variability (all P<0.0001). Escape response latency, burst clap rate, total number of claps and total duration spent clapping maintained significant repeatability over 28days (all P<0.016). Average clap rate was repeatable in the short term (2days, P<0.0001) but repeatability declined by 28days (P=0.097). Concordance analysis indicated that individuals maintained the same performance rankings over time for each component of the escape response (all P<0.001). In addition, some individuals ranked as consistently high or low performers across response latency, burst and average clap rate, and total number of claps. An individual's ability to evade predators through the provision of an escape response of an appropriate magnitude, subject to physiological, behavioural and organismal constraints, will have clear fitness-related consequences. Supplementary material available online at

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Section: Discussionmentioning

confidence: 99%

Repeatability of escape response performance in the queen scallop (Aequipecten opercularis)

Laming

Jenkins

McCarthy

2013

Journal of Experimental Biology

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“…Measurement of the scallop escape response is particularly practical as it can be easily repeated, allowing evaluation of changes in individual performance with a dietary treatment. However, the variability of the escape response indicates that greater numbers of individuals should be examined to strengthen the conclusions (Guderley et al 2008a). The strong response of mitochondrial capacities to dietary treatment suggests a mechanistic basis for the behavioural changes.…”

Section: Muscle Female Gonad Male Gonad Fatty Acidsmentioning

confidence: 97%

“…Behavioral results used only scallops for which an initial (pre-treatment) and a final (post-feeding) escape response tests were measured. Force production during escape responses was measured according to Guderley et al (2008a). A force gauge (Quantrol by Mecmesin) assessed force production through the sensor placed under the upper valve of the scallop.…”

Section: Force Recordings During Escape Responsesmentioning

confidence: 99%

“…On the short term, cold stress, air exposure, handling stress and previous swimming activity can reduce the intensity of escape responses (Brokordt et al 2000a,b;Lafrance et al 2002;Guderley et al 2008a). On the longer term, reproductive investment and seasonal changes can decrease performance, particularly during a second response to the predator (Brokordt et al 2000a,b;Brokordt et al 2006;Kraffe et al 2008;Guderley et al 2008a). The sensitivity of the scallop escape responses to physiological status suggests that food quality could modify this performance.…”

Section: Introductionmentioning

confidence: 99%

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Diet and performance in the scallop,Argopecten purpuratus: force production during escape responses and mitochondrial oxidative capacities

Guderley

Brokordt

Cortés

et al. 2011

Aquat. Living Resour.

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-We examined whether escape response performance and mitochondrial capacities could reveal differences created by feeding scallops, Argopecten purpuratus, mono-specific algal diets composed of either Chaetoceros calcitrans or Isochrysis galbana (variety T. iso) hereafter T. iso. Before and after feeding scallops with these diets, we assessed force production in vivo to evaluate escape response performance (initial and repeat). We measured oxidative capacities of mitochondria isolated from the adductor muscle and from the male and female portions of the gonad. Initial escape response performance was reduced more by the C. calcitrans diet than by the T. iso diet. Repeat escape responses, which require aerobic recuperation, were reduced by both treatments. The oxidative capacity of mitochondria isolated from muscle and female gonad was markedly lower in scallops fed C. calcitrans than in those fed T. iso. Flux through complex I-IV and through complex IV was also lower in mitochondria from muscle of scallops fed C. calcitrans than in those fed T. iso. Muscle aerobic capacity, assessed by citrate synthase activity, was lower in scallops fed C. calcitrans than in those fed T. iso. Despite the marked differences in fatty acid (FA) composition of the algal diets, the FA composition of mitochondrial phospholipids differed little between scallops fed C. calcitrans and those fed T. iso. Both escape response behaviour and mitochondrial capacities changed with feeding mono-specific diets. The simplicity of measurements of scallop escape responses suggests this as a practical means of evaluating the status of scallops for the two monoalgal diets tested.

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“…In brief, after recovery from handling stress clapping was induced by injection of distilled water via a thin, gas-tight tube into the mantle cavity. Such injections, or touching the mantle with an arm of their starfish predator, stimulates scallops to exercise until they become exhausted and unresponsive to further stimulation (Bailey et al 2003;Guderley et al 2008). The number of claps and force strengths of adductor muscle contractions were determined until the scallop was exhausted (no response to further stimulation).…”

Section: Determination Of Clapping Performancementioning

confidence: 99%

Escape performance of temperate king scallop, Pecten maximus under ocean warming and acidification

et al. 2014

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Force recordings during escape responses by Placopecten magellanicus (Gmelin): Seasonal changes in the impact of handling stress

Cited by 22 publications

References 30 publications

Repeatability of escape response performance in the queen scallop (Aequipecten opercularis)

Repeatability of escape response performance in the queen scallop (Aequipecten opercularis)

Diet and performance in the scallop,Argopecten purpuratus: force production during escape responses and mitochondrial oxidative capacities

Escape performance of temperate king scallop, Pecten maximus under ocean warming and acidification

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