The rhythmic contractions in the mantle of lamellibranchs

Redfield, Elizabeth

doi:10.1002/jez.1400220203

Cited by 7 publications

(4 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This type of rhythmic oscillation of the work output of certain muscles is widespread. In addition to the groups so far discussed it has also been described in the mantle of lamellibranch molluscs (Redfield, 1917), the Amelia medusa (Widmark, 1913), the sabellid retractor muscles (Wells, 1951) and the retractor pharynx muscles of Holothuria (Pople, 1952). Wider investigation may be expected to reveal still more instances.…”

Section: Discussionmentioning

confidence: 99%

Spontaneous Squirting of an Ascidian,Phalliusia MammillataCuvier

Hoyle

1953

J. Mar. Biol. Ass.

View full text Add to dashboard Cite

The previous work on spontaneous activity in ascidians is briefly reviewed: there is clear evidence for the existence of spontaneous contractions of the siphons of certain monascidians but no function has been ascribed to this activity. Phallnsia mammillata exhibits spontaneous contractions of its siphons at intervals of 6-9 min. over long periods in Plymouth tank sea water. The siphon contractions are synchronous. The frequency of the contractions may shift fairly quickly under constant conditions to a higher or lower rate which is usually twice or one half the normal rate.A method of recording the volume of water propelled by spontaneous activity is described. The method also records the ciliary through-current at the same time as the squirts.The frequency of the squirting is increased during a period of partial or complete starvation. It is reduced again by adding food cultures to the water.The physiological mechanisms involved in the spontaneous activity are investigated and comparisons are made with the spontaneous activity exhibited by Metridium senile and Arenicola marina. It is finally suggested that the spontaneous squirting of certain ascidians is an integral part of their feeding mechanism.

show abstract

Section: Discussionmentioning

confidence: 99%

Spontaneous Squirting of an Ascidian,Phalliusia MammillataCuvier

Hoyle

1953

J. Mar. Biol. Ass.

View full text Add to dashboard Cite

show abstract

“…In nature the movements must occur only during daylight hours, and during the night the circulation must be the result solely of ciliary activity. The phenomenon deserves further investigation as other factors such as CO2 tension would doubtless be found to influence the frequency of movement as Redfield (1917) found in a study of rhythmic contractions in the mantle of certain lamellibranchs, a quite different process but one having a similar end result.…”

mentioning

confidence: 90%

Photic Stimulation and Rhythmical Contractions of the Mantle Flaps of a Lamellibranch

Welsh¹

1933

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

Ortmann (1911) describes a peculiar rhythmical movement of the mantle flaps of females of two members of the genus Lampsilis (L. ventricosa and L. multriradiata), fresh-water lamellibranchs. This movement was noted by the author in a female of Lampsilis nasuta. With the knowledge that the siphons, mantle edge and labial palps of bivalve molluscs often contain photoreceptors, it occurred to the writer to determine whether or not this rhythmical movement was influenced by light intensity. Such movement was being sought for in order to observe the effect of light intensity on frequency of muscular contractions where amplitude was not involved as it is in leg movement (Welsh, 1932). A few preliminary trials indicated that light did play an important rBle in determining -the frequency of these rhythmical contractions. A series of determinations of the time required for ten movements, over a fairly wide range of intensities, is contained in table 1. The frequency of movement is shown plotted TABLE 1

show abstract

“…Redfield (32) has observed that the rhythmic contractions of the mantle in lamellibranchs increase in rate during the early stages of suffocation, and that if they are checked the clams suffocate.…”

Section: Vassar Collegementioning

confidence: 99%

“…Reese (32) reports that the crimson spotted newt collects in darkened regions in moderate temperatures, orients positively to light of all intensities, but inhibits or reverses this behavior at low temperatures. Red light produces the same effect as white, but in a less degree; green still less, and blue least.…”

Section: Tropisms and Instinctive Activities By Margaret Floy Washburnmentioning

confidence: 99%

Tropisms and instinctive activities.

Washburn¹

1918

Psychological Bulletin

View full text Add to dashboard Cite

The rhythmic contractions in the mantle of lamellibranchs

Cited by 7 publications

References 2 publications

Spontaneous Squirting of an Ascidian,Phalliusia MammillataCuvier

Spontaneous Squirting of an Ascidian,Phalliusia MammillataCuvier

Photic Stimulation and Rhythmical Contractions of the Mantle Flaps of a Lamellibranch

Tropisms and instinctive activities.

Contact Info

Product

Resources

About