Detecting the shellfish killer Heterocapsa circularisquama (Dinophyceae) by measuring bivalve valve activity with a Hall element sensor

Nagai, Kiyohito; Honjo, Tasuku; Go, Jyoji; Yamashita, Honami; Oh, Seok Jin

doi:10.1016/j.aquaculture.2005.12.018

Cited by 98 publications

(59 citation statements)

References 8 publications

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“…Some gape data > 5°were thus probably overestimated. The valve gape calibration dilemma was avoided in the present study by killing the bivalves or using a muscle relaxant on them after experiments, and calibrating Hall sensor output in mV to gape (°) over all gape angles (but see Nagai et al 2006 who used the Hall sensor to measure bivalve gape without the need for calibration). We recommend calibration to ensure best possible accuracy in valve gape measurements.…”

Section: Experimental Designmentioning

confidence: 99%

“…Wilson et al 2005). The use of animal-attached remote-sensing technology, in particular Hall sensors, to measure bivalve gape (Wilson et al 2005, Nagai et al 2006, Robson et al 2007) circumvents many of these problems because many measurements can be made per second and the animal may live in its normal substrate. Maire et al (2007) proposed that images acquired at a frequency of once every 15 s were sufficient to assess filtration activity precisely in Mytilus galloprovinciallis, although bivalve gape has also been recorded at 5 Hz (Wilson et al 2005), 2 Hz (Robson et al 2007), 1 Hz (Nagai et al 2006) and once every 5 and 10 min (Riisgård et al 2006).…”

Section: Introductionmentioning

confidence: 99%

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Valve gape and exhalant pumping in bivalves: optimization of measurement

Robson¹,

Thomas²,

Leániz³

et al. 2009

Aquat. Biol.

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We examined the effect of sampling frequency of gape angle and exhalant pumping measurements on our ability to determine the behaviour of bivalves. We used the endangered freshwater bivalve Margaritifera margaritifera, the non-endangered mussels Mytilus edulis and Mytilus trossulus, the scallop Pecten maximus and the cockle Cerastoderma edule. Increasing sampling interval led to an underestimation of the rate of bivalve gape adduction and abduction events detected, an overestimation of the mean duration between gape adduction and abduction events, and a misunderstanding of the form of the gape adduction and abduction events and exhalant pumping profile. Our analyses suggest minimum appropriate sampling rates for archival tags to define gape behaviour of 2, 7 and 40 Hz in M. margaritifera, C. edule and P. maximus, respectively, and 18 Hz to describe the metachronal wave in exhalant pumping of M. edulis. We demonstrate that careful consideration has to be given to the selection of sampling intervals when using a non-continuous method of recording behaviour. Our results emphasize the importance of measuring fine-scale behaviour patterns in order to advance our understanding of bivalves. The potential loss of information associated with the choice of particular sampling intervals during measurements of single parameters, and the biases which can result from this choice, are effectively germane to all species.

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Section: Experimental Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Valve gape and exhalant pumping in bivalves: optimization of measurement

Robson¹,

Thomas²,

Leániz³

et al. 2009

Aquat. Biol.

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“…Studies on interactions between the toxic dinoflagellate H. circularisquama and bivalves have focused primarily on mortality, CRs, and valve movement responses for use in early biological warning systems , Matsuyama et al 1997, Matsuyama et al 1998, Matsuyama 1999, Matsuyama 2003a, Matsuyama 2003b, Nagai et al 2006, Basti et al 2009, Basti & Segawa 2010. Although this toxic alga has been known to cause mass mortalities of different bivalve species for more than 3 decades, the process by which H. circularisquama affects the survival of marine bivalves remains unclear.…”

Section: Discussionmentioning

confidence: 99%

“…Available reports have addressed the effects of H. circularisquama on the mortality of pearl oysters, Pinctada fucata; Pacific oysters, Crassostrea gigas; blue mussels, Mytilus galloprovincialis; Asian mussels, Musculista senhousia; and the short-neck clam, Ruditapes philippinarum , Matsuyama 2003b, Yamatogi et al 2005, Nagai 2009, Basti & Segawa 2010; the clearance rates of C. gigas and M. galloprovincialis ; the D-larvae, trochophores, eggs, and sperm of C. gigas and M. galloprovincialis (Matsuyama 2003b; the trochophores and D-larvae of R. philippinarum (Basti et al 2011); and valve movement behavior in P. fucata (Nagai et al 2006) and R. philippinarum (Basti et al 2009). …”

Section: Introductionmentioning

confidence: 99%

Physiological, Pathological, and Defense Alterations in Manila Clams (Short-Neck Clams),Ruditapes philippinarum, Induced byHeterocapsa circularisquama

Basti¹,

Segawa²

2011

Journal of Shellfish Research

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“…This technique has been explored in ecotoxicology for more than 20 years, first under laboratory conditions. The basic idea of valvometry is to use the bivalve's ability to close its shell when exposed to a contaminant as an alarm signal (Doherty et al 1987;Shumway and Cucci 1987;Byrne et al 1990;Kramer and Botterweg 1991;Borcherding 1992;Sluyts et al 1996;Curtis et al 2000;Kadar et al 2001;Nagai et al 2006). Nowadays, valvometers are available on the market and use the principle of electromagnetic induction (Sloff et al 1983;Jenner et al 1989) such as the Mossel Monitor (Kramer et al 1989) or the Dreissena Monitor (Borcherding 1992).…”

Section: Introductionmentioning

confidence: 97%

Water quality assessment by means of HFNI valvometry and high-frequency data modeling

Sow

Durrieu

Briollais

et al. 2011

Environ Monit Assess

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The high-frequency measurements of valve activity in bivalves (e.g., valvometry) over a long period of time and in various environmental conditions allow a very accurate study of their behaviors as well as a global analysis of possible perturbations due to the environment. Valvometry uses the bivalve's ability to close its shell when exposed to a contaminant or other abnormal environmental conditions as an alarm to indicate possible perturbations in the environment. The modeling of such high-frequency serial valvometry data is statistically challenging, and here, a nonparametric approach based on kernel estimation is proposed. This method has the advantage of summarizing complex data into a simple density profile obtained from each animal at every 24-h period to ultimately make inference about time effect and external conditions on this profile. The statistical properties of the estimator are presented. Through an application to a sample of 16 oysters living in the Bay of Arcachon (France), we demonstrate that this method can be used to first estimate the normal biological rhythms of permanently immersed oysters and second to detect perturbations of these rhythms due to changes in their environment. We anticipate that this approach could have an important contribution to the survey of aquatic systems.

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Detecting the shellfish killer Heterocapsa circularisquama (Dinophyceae) by measuring bivalve valve activity with a Hall element sensor

Cited by 98 publications

References 8 publications

Valve gape and exhalant pumping in bivalves: optimization of measurement

Valve gape and exhalant pumping in bivalves: optimization of measurement

Physiological, Pathological, and Defense Alterations in Manila Clams (Short-Neck Clams),Ruditapes philippinarum, Induced byHeterocapsa circularisquama

Water quality assessment by means of HFNI valvometry and high-frequency data modeling

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