scholarly journals LARVAL DEVELOPMENT OF THE NORTHERN HORSE MUSSEL, MODIOLUS MODIOLUS (L.), INCLUDING A COMPARISON WITH THE LARVAE OF MYTILUS EDULIS L. AS AN AID IN PLANKTONIC IDENTIFICATION

1976 ◽  
Vol 150 (3) ◽  
pp. 348-360 ◽  
Author(s):  
ELIZABETH H. DE SCHWEINITZ ◽  
RICHARD A. LUTZ
Keyword(s):  
Larval Development ◽  
Mytilus Edulis ◽  
Modiolus Modiolus ◽  
Horse Mussel

Hinge morphogenesis in the shells of larval and early post-larval mussels (Mytilus edulis L. and Modiolus modiolus (L.))

1979 ◽  
Vol 59 (1) ◽  
pp. 111-121 ◽  
Author(s):  
Richard A. Lutz ◽  
Herbert Hidu
Keyword(s):  
Larval Development ◽  
Mytilus Edulis ◽  
Microscopic Examination ◽  
Ontogenetic Changes ◽  
Similar Sequence ◽  
Hinge Line ◽  
Modiolus Modiolus ◽  
The Family ◽  
Scanning Electron

Scanning electron and optical microscopic examination of the hinge apparatus and primary ligament pit of two Recent mytilids (Mytilus edulis and Modiolus modiolus) revealed a similar sequence of ontogenetic changes in both species from the prodissoconch I stage through metamorphosis. Hinge-line dentition was absent at the prodissoconch I stage. Provinculum length and complexity increased throughout larval development with progressive lateral thickening characteristic of the family Mytilidae.

scholarly journals Changes of Heart Rate and Lipid Composition in Mytilus Edulis and Modiolus Modiolus Caused by Crude Oil Pollution and Low Salinity Effects

2021 ◽  
Vol 11 (2) ◽  
pp. 46-60
Author(s):  
Igor Bakhmet ◽  
Natalia Fokina ◽  
Tatiana Ruokolainen
Keyword(s):  
Heart Rate ◽  
Crude Oil ◽  
Mytilus Edulis ◽  
Lipid Composition ◽  
Oil Pollution ◽  
Cardiac Activity ◽  
Blue Mussels ◽  
Low Salinity ◽  
Crude Oil Pollution ◽  
Modiolus Modiolus

Blue mussels, Mytilus edulis, inhabiting tidal zones, are naturally exposed to fluctuating environmental conditions (e.g., fluctuations in temperature and salinities), while horse mussels, Modiolus modiolus, live under relatively invariable shelf water conditions. The present investigation tested the hypothesis: blue mussels, in comparison to horse mussels, have an increased ability to tolerate the stress of pollution combined with low salinity. To assess the response of blue mussels and horse mussels to oil pollution at seawater salinities of 25 psu (normal) and 15 psu (low), we used a combination of heart rate and lipid composition as physiological and biochemical indicators, respectively. A sharp decrease in heart rate as well as important fluctuations in cardiac activity was observed under all oil concentrations. Modifications in the concentrations of the main membrane lipid classes (phosphatidylcholine, phosphatidylethanolamine, and cholesterol) and storage lipids (primarily triacylglycerols) in response to different crude oil concentrations were time- and dose-dependent. Both chosen indicators showed a high sensitivity to crude oil contamination. Furthermore, both bivalve species showed similar responses to oil pollution, suggesting a universal mechanism for biochemical adaptation to crude oil pollution.

Oxygen isotope composition in Modiolus modiolus aragonite in the context of biological and crystallographic control

2008 ◽  
Vol 72 (2) ◽  
pp. 569-577 ◽  
Author(s):  
M. Cusack ◽  
D. Parkinson ◽  
A. Freer ◽  
A. Pérez-Huerta ◽  
A. E. Fallick ◽  
...  
Keyword(s):  
Biological Control ◽  
Oxygen Isotope ◽  
Environmental Influence ◽  
Isotope Composition ◽  
Seawater Temperature ◽  
Crystal Habit ◽  
Ambient Seawater ◽  
Oxygen Isotope Fractionation ◽  
Modiolus Modiolus ◽  
Horse Mussel

AbstractLiving systems exert exquisite control on all aspects of biomineral production and organic components, including proteins, are essential to this biological control. The protein-rich extrapallial (EP) fluid of bivalve molluscs is a strong candidate for the source of such proteins. Differences in calcium carbonate polymorphs between Modiolus modiolus and Mytilus edulis are concurrent with differences in EP fluid protein profiles. In conjunction with this biological control is the environmental influence which is interpreted using proxies such as δ18O to determine the history of ambient seawater temperature. In the horse mussel, Modiolus modiolus, the difference in oxygen isotope fractionation in the nacreous aragonite and the prismatic aragonite layer results in respective δ18O values of 2.1±0.2% and 2.5±0.2%. These δ18O values result in estimates of ambient seawater of 12.1±0.6°C and 10.2±0.6°C for nacreous and prismatic aragonite, respectively. Electron backscatter diffraction is used here to determine the crystallographic orientation at high spatial resolution, allowing the measurements of stable isotopes to be accurately mapped in terms of shell architecture. These preliminary data suggest that it is essential to account for both polymorph and crystal habit when deciphering ambient seawater temperature using δ18O as a proxy.

Gross Structure of the Adductor Muscles of Some Pelecypods

1973 ◽  
Vol 30 (10) ◽  
pp. 1583-1585 ◽  
Author(s):  
Carol M. Morrison ◽  
Paul H. Odense
Keyword(s):  
Mytilus Edulis ◽  
Crassostrea Virginica ◽  
Adductor Muscle ◽  
Mya Arenaria ◽  
Placopecten Magellanicus ◽  
Spisula Solidissima ◽  
Arctica Islandica ◽  
Modiolus Modiolus ◽  
Adductor Muscles ◽  
Clinocardium Ciliatum

A study of the gross structure of adductor muscles of the following pelecypods showed that they conform to Morton’s grouping into the a) "Protobranchia" (Nucula proxima and Yoldia limatula), b) "shallow-burrowing lamellibranchs" (Clinocardium ciliatum, Venericardia borealis, Astarte undata, Arctica islandica, Venus mercenaria, and Spisula solidissima), c) "surface attached lamellibranchs" (Mytilus edulis, Modiolus modiolus, Modiolus demissus, Placopecten magellanicus, and Crassostrea virginica), d) "deep-burrowing and immobile lamellibranchs" (Ensis directus, Hiatella arctica, and Mya arenaria); thus providing more evidence for his classification. The adductor muscle is divided into two portions — translucent and opaque — except in the "deep-burrowing and immobile lamellibranchs", which have opaque muscles only.

Reproduction-related effects of green alga Coccomyxa sp. infestation in the horse mussel Modiolus modiolus

2013 ◽  
Vol 113 (1) ◽  
pp. 86-95 ◽  
Author(s):  
M.A. Vaschenko ◽  
A.L. Kovaleva ◽  
I.G. Syasina ◽  
A.D. Kukhlevsky
Keyword(s):  
Green Alga ◽  
Modiolus Modiolus ◽  
Horse Mussel

Observations on the Reproduction of Modiolus Modiolus in Isle of Man Waters

1989 ◽  
Vol 69 (2) ◽  
pp. 373-385 ◽  
Author(s):  
A.K. Jasim ◽  
A.R. Brand
Keyword(s):  
North Carolina ◽  
Bering Sea ◽  
East Coast ◽  
White Sea ◽  
Rock Pools ◽  
Modiolus Modiolus ◽  
Coastal Marine ◽  
The Pacific ◽  
Horse Mussel ◽  
The Bering Sea

The horse-mussel Modiolus modiolus (L.) is a bivalve molluse inhabiting coastal marine environments down to about 200 m, where it may occur in very large communities (Wiborg, 1946; Tebble, 1966; Comely, 1978). It can also be found low in the intertidal zone where it lives in rock pools or in the hold-fasts of Laminaria (Wilson, 1977; Davenport & Kjørsvik, 1982). It is a boreal species. In the Atlantic it ranges from the White Sea to the Bay of Biscay, off Iceland, the Faroes and down the east coast of North America to North Carolina. In the Pacific it occurs from the Bering Sea to Japan and California (Wiborg, 1946). Comparatively little work has been done on Modiolus modiolus, probably because it is of little commercial importance and lives predominantly subtidally in relatively inaccessible environments.

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