The Ratio of Shell to Meat in Mytilus as a Function of Tidal Exposure to Air

Baird, R. H.; Drinnan, R. E.

doi:10.1093/icesjms/22.3.329

Cited by 29 publications

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“…Mussels from the mid tide maintained a similar shell weight/ shell length ratio to mussels from the low tide. This was an unexpected result as previous studies comparing intertidal and subtidal populations of the same species have found that the shells of intertidal mussels were heavier than subtidal mussels (Baird & Drinnan 1957;Hickman 1979). The mechanisms by which P. canaliculus from the mid tide maintain positive scope for growth most likely result from a combination of energy conservation during aerial exposure (Marsden & Weatherhead 1998) and energy supplementation as a result of higher clearance rates during reduced periods of tidal immersion.…”

Section: Discussionmentioning

confidence: 67%

“…33 &Pilkington 1995). Relatively few studies have compared the CI of bivalves from different tidal levels but for M.edulis from Europe (Baird & Drinnan 1957;Baird 1966;Aldrich & Crowley 1986) and in the New Zealand cockle, Austrovenus stutchburyi, low-shore individuals consistently have higher values than those from mid tide levels (Dobbinson et al 1989). There are no comparative values for any Perna spp.…”

Section: Introductionmentioning

confidence: 99%

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Shore‐level induced variations in condition and feeding of the musselPerna canaliculusfrom the east coast of the South Island, New Zealand

Marsden

Weatherhead

1999

New Zealand Journal of Marine and Freshwater Research

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Mussels (Perna canaliculus) (Gmelin, 1791) collected from mid and low tide rocky platforms along the east coast of the South Island of New Zealand differed in dry weight condition index between shore levels. Mussel condition was c. 15% lower at mid tide level than the low tide level and there was greater variation between shore level than between sites. Feeding experiments were conducted at 15°C with mussels collected from mid and low tide levels using Isochrysis galbana as the food. Clearance rate depended upon body size, shore level, and season. During summer clearance rates of mid and low tide mussels were similar. However in winter, increased filtration rates were recorded in mussels from the mid tide level compared with those from the low tide. In addition, for mussels from both shore levels, winter rates were higher than those recorded in the summer. Nitrogen excretion by mussels also showed seasonal and shore level differences. High values for ammonia excretion of mussels collected from the mid tide during winter suggests they utilise metabolic reserves to maintain their basal metabolism. Although our results suggest that increased filtration rates for mid tide mussels might compensate for reduced feeding time, in the winter, larger mussels from the mid tide level would Received 30 October 1998; accepted 29 April 1999 be unlikely to obtain sufficient energy for maintenance or growth. Large mussels were infrequent in the mid tide population, where the mean length was 62.5 mm compared with 75.1 mm from the low tide. It is concluded that nutrient limitation, as a result of reduced feeding time can act as a significant stress factor limiting the growth potential of mussels settled at the mid tide level. M98077

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Section: Discussionmentioning

confidence: 67%

Section: Introductionmentioning

confidence: 99%

Shore‐level induced variations in condition and feeding of the musselPerna canaliculusfrom the east coast of the South Island, New Zealand

Marsden

Weatherhead

1999

New Zealand Journal of Marine and Freshwater Research

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“…A reduction in mussel growth rate with decreasing submergence time was also found at many other tidal coasts. The availability of food is controlled by immersion time, which in turn is a direct function of tidal height (Baird and Drinnan, 1957;Baird, 1966;Seed, 1968;Suchanek, 1978;Bertness and Grosholz, 1985). Therefore, the longer time for feeding is considered to be the main reason for faster growth in the subtidal.…”

Section: Discussionmentioning

confidence: 99%

“…Mussel size and age are also important (Baird, 1966;Seed, 1968;Widdows et al, 1984) and at high mussel densities intraspeci®c competition for food may reduce growth rate in bivalves (Bertness and Grosholz, 1985;Wildish and Kristmanson, 1985;Okamura, 1986;Newell, 1990). On tidal coasts, duration of air exposure is considered to be one of the most important factors for growth in mussels (Baird and Drinnan, 1957;Baird, 1966;Bertness and Grosholz, 1985;Faldborg et al, 1994;McGrorty et al, 1993;McGrorty, 1997) and may lead to considerable variations in size and shape between intertidal and subtidal M. edulis (Baird, 1966;Seed, 1968). Epibionts have also been shown to in¯uence mussel growth.…”

Section: Introductionmentioning

confidence: 99%

Growth of the mussel Mytilus edulis L. in the Wadden Sea affected by tidal emergence and barnacle epibionts

Buschbaum

Saier

2001

Journal of Sea Research

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On the tidal¯ats in the Wadden Sea mussels Mytilus edulis form extensive epibenthic beds. Near the island of Sylt (German Bight, North Sea), these extend from mid intertidal to shallow subtidal zones and are often heavily overgrown by barnacles (Semibalanus balanoides and Balanus crenatus). The effects of tidal emergence and barnacle epibionts on growth in M. edulis were investigated by ®eld experiments and surveys. The results showed that mussel cohort lengths increased from the mid intertidal (25±35 mm shell length) over low intertidal (30±45 mm) to the subtidal zone (45±60 mm). In the low intertidal zone M. edulis were heavily overgrown by barnacles (2.2^0.4 g dry weight mussel 21 ), while balanid epigrowth was signi®cantly lower subtidally (0.9^0.4 g mussel 21 ) as well as in the mid intertidal zone (0.7^0.3 g mussel 21 ). Cross-transplantation experiments of clean mussels (25±35 mm length) showed that from July to September growth was about 3 mm in the intertidal zone and signi®cantly increased to about 10 mm subtidally. Mussel origin had no in¯uence upon growth. Further ®eld experiments showed signi®cantly lower growth in mussels with barnacles than without. Living and experimentally sealed barnacles did not differ in their effect, indicating that food competition was not responsible. This investigation suggests that uctuations in the extent of barnacle epigrowth may modify growth patterns in M. edulis which are otherwise governed by tidal exposure. q

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“…On tidal coasts, duration of air exposure of intertidal mussel beds is considered to be one of the most crucial factors controlling mussel growth (e.g. Baird & Drinnan 1957;Faldborg et al 1994;McGrorty 1997) and may lead to considerable variations in size and shape between intertidal and subtidal M. edulis (Baird 1966;Seed 1968).…”

Section: Introductionmentioning

confidence: 99%

Colonization of an artificial hard substrate byMytilus edulisin the German Bight

Joschko

Buck

Gutow

et al. 2008

Marine Biology Research

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The colonization of the underwater construction of an offshore research platform in the German Bight by Mytilus edulis was investigated. Mussel abundance, biomass and percentage coverage of the construction were determined from summer 2003 to summer 2005 from different water depths using digital underwater images and scrape samples of the hard substrate fauna. Growth was estimated from shell length distributions. In 2003 settlement of M. edulis was low at the platform mainly due to a temporal mismatch between platform construction and occurrence of competent larvae. In summer 2004 mussel abundance increased remarkably in the intertidal and upper subtidal. Abundance and biomass increased up to 30,000 individuals m (2 and approximately 40 kg m (2 in summer 2005. At the end of the investigation period, the upper part of the platform foundation was completely covered by M. edulis. Lower parts remained sparsely colonized. Mussel growth rates were high under offshore conditions because of favourable environmental conditions and reduced biological constraints. Cumulative effects from wind farm entities are estimated. Mussel accumulations will be an important component in the estimation of ecological implications of offshore wind farming at least at the local scale.

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The Ratio of Shell to Meat in Mytilus as a Function of Tidal Exposure to Air

Cited by 29 publications

References 0 publications

Shore‐level induced variations in condition and feeding of the musselPerna canaliculusfrom the east coast of the South Island, New Zealand

Shore‐level induced variations in condition and feeding of the musselPerna canaliculusfrom the east coast of the South Island, New Zealand

Growth of the mussel Mytilus edulis L. in the Wadden Sea affected by tidal emergence and barnacle epibionts

Colonization of an artificial hard substrate byMytilus edulisin the German Bight

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