Tidal Rhythms in the Shell Secretion of Living Bivalves

Richardson, Christopher A.

doi:10.1007/978-3-642-75587-3_22

Cited by 7 publications

(4 citation statements)

References 17 publications

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“…The production of the bands is related to an endogenous rhythm of shell formation and not to exogenous factors such as diurnal fluctuations and tidal or The bands in C. gallina may also be an expression of an endogenous rhythm. Certainly there is increasing evidence that the production of microgrowth bands in subtidal bivalves may be under endogenous control (Richardson 1991) rather than daily or tidal control (Lutz & Rhoads 1980). In the Mediterranean, where there are no tides, the formation of microgrowth bands is likely to be controlled by an innate rhythm and therefore the bands cannot be used to measure tldal or daily growth rates, a method previously used to assess shell growth rates in intertidal bivalves (Richardson et al 1980).…”

Section: Discussionmentioning

confidence: 99%

Age determination and shell growth of Chamelea gallina (Bivalvia: Veneridae) in the western Mediterranean

Ramón¹,

Richardson²

1992

Mar. Ecol. Prog. Ser.

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The pattern of microgrowth bands in shell sections of the Mediterranean clam Chamelea gallina shows a seasonal variation in width. Widely spaced growth bands are formed in winter and late spring between January and June, whilst narrow growth increments are deposited in summer and early autumn between August and October, following the maximum summer seawater temperature. The warm summer seawater temperature of 33 "C in the western Mediterranean may be responsible for the suppression of shell growth, as evidenced both by the narrowing of the growth increments and by the later appearance of clefts in shell sections. There is no correlation between spawning and the formation of clefts in the shell of C. gallina. The annual pattern of narrow and wide growth increments has been used to estimate the age of C. gallina and to construct growth curves for this species from the eastern coast of Spain. Growth curves for the clams, determined from the internal microgrowth bands and from the spacing between the clefts in shell sections, differed from the curve calculated using surface growth rings.

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Section: Discussionmentioning

confidence: 99%

Age determination and shell growth of Chamelea gallina (Bivalvia: Veneridae) in the western Mediterranean

Ramón¹,

Richardson²

1992

Mar. Ecol. Prog. Ser.

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“…The paleotidal implications of these data have been reviewed by Scutton [1978] and Lainbeck [1980]. These authors and others since then [e.g., Richardson, 1990;Bourget et al, 1991] emphasize the difficulties of unambiguous interpretation of the growth increments. For example, Richardson reports that living bivalves have been observed to have daily linearions, tidal lineations (twice daily or less), or lineations of no apparent rhythm.…”

Section: Inferences From Tidal Laminaementioning

confidence: 99%

Lunar orbital evolution: A synthesis of recent results

Bills

Ray

1999

Geophysical Research Letters

115

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Abstract. The present rate of tidal dissipation in the EarthMoon system is known to be anomalously high, in the sense that the implied age of the lunar orbit is only 1.5 x 109 years, though other evidence suggests an age closer to 4x 109 years. To assess how long the anomalous dissipation has persisted, we use published estimates of lunar orbital configurations derived from (a) fine grained sediments containing tidal laminations and (b) numerical ocean models averaged over varying ocean geometries. The implied histories of the lunar semimajor axis are surprisingly consistent over the past 109 years. The ocean models imply, on average, reduced dissipation in the past because of a spatial mismatch between tidal forcing and oceanic normal modes of higher frequencies. Webb's ocean model suggests that the "anomalous" oceanic dissipation began about 109 years ago and has been increasing since then.

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“…This means that the growth lines visible on the surface are not directly related to prisms. They are instead related to lines in the lamellar layer (Richardson 1990). In fact, if there are different widths of prisms, it is because during their growth, prisms are in competition with each other to occupy space between the organic matter membranes (Rhoads and Lutz 1980;Checa 2000;Checa and Rodriguez-Navarro 2001;Checa et al 2005).…”

Section: Resultsmentioning

confidence: 99%

Does prism width from the shell prismatic layer have a random distribution?

Vancolen

Verrecchia

2008

Geo-Mar Lett

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A study of the distribution of the prism width inside the prismatic layer of Unio tumidus (Philipsson 1788, Diss Hist-Nat, Berling, Lundae) from Lake Neuchâ-tel, Switzerland, has been conducted in order to determine whether or not this distribution is random. Measurements of 954 to 1,343 prism widths (depending on shell sample) have been made using a scanning electron microscope in backscattered electron mode. A white noise test has been applied to the distribution of prism sizes (i.e. width). It shows that there is no temporal cycle that could potentially influence their formation and growth. These results suggest that prism widths are randomly distributed, and related neither to external rings nor to environmental constraints.

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Tidal Rhythms in the Shell Secretion of Living Bivalves

Cited by 7 publications

References 17 publications

Age determination and shell growth of Chamelea gallina (Bivalvia: Veneridae) in the western Mediterranean

Age determination and shell growth of Chamelea gallina (Bivalvia: Veneridae) in the western Mediterranean

Lunar orbital evolution: A synthesis of recent results

Does prism width from the shell prismatic layer have a random distribution?

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