In situ feeding and absorption responses of sea scallops Placopecten magellanicus (Gmelin) to storm-induced changes in the quantity and composition of the seston

Cranford, Peter J.; Emerson, Craig; Hargrave, B. T.; Milligan, Timothy G.

doi:10.1016/s0022-0981(97)00174-3

Cited by 83 publications

(56 citation statements)

References 48 publications

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“…The same inverse relationship of clearance rate to seston concentration has been described for other bivalves, such as Arctica islandica (Winter 1970), Cerastoderma edule , Navarro & Widdows 1997, M. chilensis , and M. edulis (Winter 1976, Widdows et al 1979, Kiørboe et al 1980, Clausen & Riisgård 1996. Other authors found that the clearance rate was independent of the concentration of seston , Cranford et al 1998, and yet others have observed increases in clearance rate with an increase in seston concentration (Newell & Shumway 1993, Hawkins et al 1996. These variations are related to the different types of particles in the seston and the range of seston concentration used in the studies cited (Hawkins et al 2001).…”

supporting

confidence: 65%

Feeding physiology of infaunal (Mulinia edulis) and epifaunal (Mytilus chilensis) bivalves under a wide range of concentrations and qualities of seston

Velasco¹,

Navarro²

2002

Mar. Ecol. Prog. Ser.

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A comparative study was carried out on the functional feeding behavior of the infaunal clam Mulinia edulis and the epifaunal mussel Mytilus chilensis from Yaldad Bay, southern Chile, in response to broad fluctuations in quantity and quality of seston. A number of physiological variables were quantified and compared, including clearance, filtration and ingestion rates; pseudofeces production and pre-ingestive selection efficiency. Relative sizes of the ctenidia and labial palps were measured for both species to determine if the size of the organs was related to their capacity for filtration and pre-ingestive particle selection. Both species showed high rates of clearance at lower seston concentrations (< 3 to 5 mg l -1 ). Above these concentrations, both species regulated both the quantity and quality of material ingested. When the seston concentration was relatively low and/or its quality high, regulation of food ingested was accomplished primarily by reduction in clearance rate, while at high seston concentrations and/or low quality, this parameter was regulated primarily by the expulsion of pseudofeces with a lower content of organic matter. Ingestion regulation was higher in M. chilensis. In general, both species showed a capacity for pre-ingestive particle selection, which increased with seston concentration and the proportion of organic matter present. In diets containing more than 60% organic matter, selection efficiency in M. chilensis became slightly reduced, while in M. edulis it remained stable; this observation is explained by the larger relative size of the labial palps in Mulinia edulis. Generally, feeding rates of M. chilensis were higher than those of M. edulis; this may be attributable to the former's larger-sized ctenidia, which are able to filter more food. KEY WORDS: Mulinia edulis · Mytilus chilensis · Infaunal and epifaunal bivalves · Feeding behavior · Particle selection · Diet quality · Chile tidal flats Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 240: [143][144][145][146][147][148][149][150][151][152][153][154][155] 2002 Foster-Smith 1975, , Newell & Jordan 1983, Ward & MacDonald 1996, Navarro & Widdows 1997. These studies suggest that both infaunal and epifaunal bivalves are able to affect pre-ingestive particle selection, which improves the quality of the matter ingested. In this manner, these organisms are able to adjust their feeding rates in order to maximise their acquisition of energy and avoid functional problems associated with particle saturation. A majority of studies on this topic were carried out using a narrow range of seston concentrations (2 to 30 mg l -1 ) in seawater that did not necessarily reflect natural seston concentrations, which may range to over 100 mg l -1 with extreme values of 500 mg l -1 (Falconer & Owens 1990). The few studies which have included high ranges of seston concentration (>100 mg l -1 ) used natural seston or diets made up of varying quantities of sediment to which known amounts of p...

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supporting

confidence: 65%

Feeding physiology of infaunal (Mulinia edulis) and epifaunal (Mytilus chilensis) bivalves under a wide range of concentrations and qualities of seston

Velasco¹,

Navarro²

2002

Mar. Ecol. Prog. Ser.

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“…This behaviour has been recorded previously for C. dilatata by Montory et al [49] and for C. peruviana and the oyster Ostrea chilensis by Chaparro et al [17]. The difference in the critical salinity between females [23] and males [19] may be attributable to the fact that larval stages of marine invertebrates are often more sensitive than adults to low salinity [50][51][52][53]. ; mean ± SD; n = 14 animals).…”

Section: Discussionsupporting

confidence: 80%

“…The concentration and quality of suspended particulate matter and their role in regulating feeding and ingestion rates has been studied extensively [19][20][21].…”

Section: Open Accessmentioning

confidence: 99%

“…There is little information on the action of the radula, particularly in relation to environmental variables, although it is more associated with motile individuals (all males and juveniles) than with sessile individuals (females), in which the scraping action of the radula is reduced and suspension-feeding is the principal means of food acquisition [23,25]. Males also isolate the mantle cavity from the exterior environment to prevent osmotic stress to the soft tissues at low salinity, although the critical salinity value [19] is lower than for females. Although isolation of the mantle cavity prevents suspension-feeding, it is not clear whether the radula continues to scrape the substrate, either in males or females.…”

Section: Open Accessmentioning

confidence: 99%

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The influence of season and the tidal cycle on division of labour by the radula during feeding in the estuarine brooding gastropod Crepipatella dilatata (Calyptraeidae)

et al. 2018

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The brooding gastropod Crepipatella dilatata can feed by scraping the substrate with the radula and by suspensionfeeding, which also requires use of the radula. There is a "division of labour" for the radula among three discrete tasks associated with feeding: (1) removing mucous balls from the food pouch; (2) transferring the mucous cord from the neck channel to the mouth (both components of suspension-feeding); (3) scraping the substrate. We hypothesised that the proportion of time used for each feeding activity varies according to environmental conditions. Total radular activity in females was greatest at high tide and in summer. The rate of radular extrusion for ingesting the mucous cord varied seasonally and between brooding and non-brooding females. Non-brooding females exhibited higher rates of radular extrusion for ingesting the mucous cord and for scraping the substrate than did brooders. In females, radular activity in removing the mucous ball from the food pouch was strongly influenced by the tidal cycle during winter, reaching minimum values at low tide. Differences were recorded in substrate scraping among seasons and within tidal cycles, and among males, brooding females and non-brooding females. Brooding females displayed less rasping than non-brooders, since the area available for grazing was restricted by the egg mass. Throughout the year, including low salinity periods, males allocated a greater proportion of total radular activity to rasping than to removing the mucous ball or ingesting the mucous cord. The feeding behaviour of both males and females is modulated by salinity, but the principal determinants of radular activity are the mode of reproduction (brooding in females) and, in males, motility.

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“…The negative relationship between SPM and % POM in 1998 suggests that resuspended particles were important in some of the seston samples (Hawkins et al 1996(Hawkins et al , 1998. Wind-induced resuspension serves to decrease the quality of the food available to mussels while increasing the total quantity available (Berg & Newell 1986, Cranford et al 1998). In 1999, there was a positive relationship between SPM and both POM and chlorophyll, indicating that higher particle loads were associated with phytoplankton.…”

Section: Discussionmentioning

confidence: 99%

Bay-scale spatial growth variation of mussels Mytilus edulis in suspended culture, Prince Edward Island, Canada

Waite¹,

Grant²,

Davidson³

2005

Mar. Ecol. Prog. Ser.

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Spatial growth variation of experimentally cultured blue mussels Mytilus edulis in Tracadie Bay, Prince Edward Island, Canada, was consistent in both years of a 2 yr study. The spatial pattern displayed reduced tissue growth along a gradient of decreasing tidal exchange from the inlet mouth to the inner estuary. There was no indication of persistent spatial differences in seston concentration among stations. The data imply that the flux of food (expressed as the product of concentration and current speed) controls the spatial variation in growth, with decreasing flux from the outer to inner bay. Growth trajectories analysed by polynomial regression differed between years despite spatial similarities within each year. Results of multiple regression analyses explaining mussel growth suggested that temporal variability in seston characteristics was more important in explaining growth than annual mean seston levels. Chlorophyll a and meat weight showed similar patterns of increase during 1998. In 1999, higher summer temperatures were more important in determining upper limits of growth, with later growth stimulation apparently in response to an autumn phytoplankton bloom. The pattern of spatial variability in mussel growth, representing decreased growth rates in the inner relative to the outer bay, provided evidence that the density of mussels in Tracadie Bay was exceeding the food supply.KEY WORDS: Mussels · Mussel growth · Food availability · Phytoplankton · Aquaculture · Carrying capacity Resale or republication not permitted without written consent of the publisherMar Ecol Prog Ser 297: [157][158][159][160][161][162][163][164][165][166][167] 2005 There are many scales at which food limitation can affect the growth of cultured bivalves. High density at a local scale (e.g. within socking sleeves) may lead to reduced growth of interior bivalves (Parsons & Dadswell 1992, Côté et al. 1994. Seston depletion resulting from the distribution of bivalves on longlines may also affect their growth in the centre of a farm (Pilditch et al. 2001). A large-scale gradient in mussel growth can occur as a result of the interaction between the distribution of phytoplankton, the filtration capacity of local populations, and water circulation patterns in heavily cultured embayments (Dolmer 2000). Seston depletion might be expected to be most severe in the innermost part of a bay if the majority of the food supply is from incoming tides (Dowd 2000). There are surprisingly few studies of spatial variation in growth of cultured bivalves despite the potential importance of this factor to shellfish growth.This study investigated the relationship between blue mussel growth and food supply within an intensely cultured embayment in PEI. Mussel growth was measured coincident with monitoring seston concentrations and temperature at 5 geographically distinct locations within the embayment. Growth trajectories were described statistically and the interaction between mussel growth, environmental variables, and location examined. In a...

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In situ feeding and absorption responses of sea scallops Placopecten magellanicus (Gmelin) to storm-induced changes in the quantity and composition of the seston

Cited by 83 publications

References 48 publications

Feeding physiology of infaunal (Mulinia edulis) and epifaunal (Mytilus chilensis) bivalves under a wide range of concentrations and qualities of seston

Feeding physiology of infaunal (Mulinia edulis) and epifaunal (Mytilus chilensis) bivalves under a wide range of concentrations and qualities of seston

The influence of season and the tidal cycle on division of labour by the radula during feeding in the estuarine brooding gastropod Crepipatella dilatata (Calyptraeidae)

Bay-scale spatial growth variation of mussels Mytilus edulis in suspended culture, Prince Edward Island, Canada

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