The Living Clocks of Marine Organisms

Palmer, John D.

doi:10.1007/978-1-4612-6287-9_10

Cited by 30 publications

(51 citation statements)

References 22 publications

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“…The periodic rise and fall of tides profoundly affect the lives of coastal marine animals (see Palmer, 1974Palmer, , 1990Barnwell, 1976;DeCoursey, 1983;Morgan, 1995 1(96)02606-S with tidal and tidal amplitude cycles. The tidal cycle refers to the semidaily or daily cycle of high and low tides, and the tidal amplitude cycle is the biweekly cycle of daily differences in the height of high and low tides that is usually synonymous with the spring-neap cycle.…”

Section: Introductionmentioning

confidence: 99%

“…The tidal cycle refers to the semidaily or daily cycle of high and low tides, and the tidal amplitude cycle is the biweekly cycle of daily differences in the height of high and low tides that is usually synonymous with the spring-neap cycle. Animals often track these changes in tides endogenously thereby enabling them to anticipate and reliably time reproduction and other activities (Palmer, 1974(Palmer, , 1990DeCoursey, 1983;Forward, 1987;Giese, 1987;Morgan, 1995). Tidal and tidal amplitude rhythms are entrained by cues that are associated with tides, such as salinity, temperature, hydrostatic pressure and vibrations.…”

Section: Introductionmentioning

confidence: 99%

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Influence of tidal variation on reproductive timing

Morgan

1996

Journal of Experimental Marine Biology and Ecology

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Tidal variation may cause the timing of activities by coastal organisms to vary geographically. This was demonstrated by determining the timing of larval release by the same or closely related species in diurnal and mixed semidiumal tidal regimes along the northeastern Gulf of Mexico and by contrasting hatching patterns with those previously documented in a semidiurnal tidal regime along the Atlantic coast of the USA. Five species of crabs primarily released larvae during nocturnal maximum amplitude high tides near new and full moons along the Atlantic coast. In contrast, larval release by the same or closely related species on the Gulf coast peaked either when maximum amplitude high tides occurred during the daytime or several days away when submaximal amplitude high tides occurred near dawn. This variation in reproductive timing arose because maximum high tides do not occur at night along the Gulf coast during most of the reproductive season. Reproductive timing also differed for two species pairs along the Gulf coast due to changes in the phasing of the tides and light-dark cycle. Species-specific hierarchies of rhythms regulating reproductive timing were revealed by the degree to which larval release kept phase with lunar, tidal amplitude and light-dark cycles. These hierarchies enabled crabs to track phase shifts of cycles in variable tidal environments and may enhance reproductive success across tidal regimes.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of tidal variation on reproductive timing

Morgan

1996

Journal of Experimental Marine Biology and Ecology

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“…Activities and physiologies of many coastal marine animals are synchronized with the rise and fall of tides, including locomotion, foraging, courtship, mating, spawning, hatching, larval swimming, settlement, respiration and pigment migration (Palmer 1974, Cibson 1978, DeCoursey 1983, Morgan 1995 for reviews) Oscillations in tides often are tracked endogenously, thereby enabling organisms to anticipate and reliably time these activities (Palmer 1974, DeCoursey 1983, Forward 1987, Giese & Kanatani 1987. Tidal and tidal amplitude rhythms are entrained by cues that are associated with tides, such as 'Present address: Marine Sciences Research Center, State University of New York, Stony Brook, New York 11794-5000, USA.…”

Section: Introductionmentioning

confidence: 99%

“…Tidal and tidal amplitude rhythms are entrained by cues that are associated with tides, such as 'Present address: Marine Sciences Research Center, State University of New York, Stony Brook, New York 11794-5000, USA. E-mail: smorgan@ccmall.sunysb edu salinity, temperature, hydrostatic pressure, vibrations a n d moonlight (Palmer 1974, DeCoursey 1983, Forward 1987, Giese & Kanatani 1987. The tidal cycle refers to the semidaily or daily cycle of high a n d low tides, and the tidal amplitude cycle is the biweekly cycle of daily differences in the height of high and low tides that is usually synonymous with the springneap cycle.…”

Section: Introductionmentioning

confidence: 99%

“…The tidal cycle refers to the semidaily or daily cycle of high a n d low tides, and the tidal amplitude cycle is the biweekly cycle of daily differences in the height of high and low tides that is usually synonymous with the springneap cycle. Coasta.1 animals also commonly track changes in the light-dark cycle (Palmer 1974, DeCoursey 1983, Giese & Kanatani 1987, Morgan 1995. Thus, circatidal (usually about 12.4 h but sometimes about 24.8 h), circadian (about 24 h) a n d circasemilunar (about 14.8 d ) rhythms in reproduction a n d behavior often are entrained by tidal, light-dark, tidal amplitude and lunar cycles.…”

Section: Introductionmentioning

confidence: 99%

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Plasticity in reproductive timing by crabs in adjacent tidal regimes

Morgan¹

1996

Mar. Ecol. Prog. Ser.

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Tidal variation may cause reproductive timing by fiddler crabs Uca pugilator (Bosc) to vary geographically and seasonally. Fiddler crabs in a semidlurnal tidal regime along the Atlantic coast of the USA were previously shown to release larvae synchronously during maximum a m p l~t u d e evening high tides near new and full moons throughout the reproductive season. In the present study, fiddler crabs in a diurnal tldal regime on the Gulf coast of the USA released larvae during internledlate amplitude flood tldes near dawn regardless of lunar phase throughout most of the reproductive season. Late in the summer, peak larval release occurred near maximum amplitude high tides as on the Atlantic coast. In a mixed semidlurnal tidal regime on the Gulf coast, peak larval release by flddler crabs occurred during Intermediate amplitude high tldes near dawn, but biweekly period~city was weak late in the reproductive season. Intraspecific variation in reproductive timing arose because nocturnal maximum high tides dld not occur along the Gulf coast during most of the summer, but these tides returned during late summer In the diurnal tidal regime. Reproductive timing changed concomitantly with changing phase relationships of tides with light-dark and lunar cycles. Variation in reproductive timiny is phenotypic because crabs thdt were translocated reciprocally between diurnal and mixed semidiurnal tidal regimes entrained to the timing patterns of local crabs. A hierarchy of rhythms regulating reproductive timing was revealed by the degree to which larval release kept phase with lunar, tidal amplitude, tidal and light-dark cycles. These hierarchies enabled crabs to trnck phase shifts of cycles in variable tidal environments and may enhance mcdn reproductive succrss throughout the range of the specles

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Vertical migration rhythm in freshwater diatoms

Gröning

Köster

1977

Hydrobiologia

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Epipelic diatoms of a pond undergo a vertical migration rhythm moving to the surface of the sediment in the morning and downwards again in the afternoon .In the laboratory the same rhythmicity was found with a maximum of cells on the surface at noon or in the afternoon . Under the experimental conditions employed there was no evidence of two or more peaks .As in some, but not all, unicellular algae of the tidal zone, this migration shows the characteristics of endogenous circadian rhythms, such as persistance in continous light or dark and reversal of the phase by shift of 12 hours in the 'Zeitgeber' : light .

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The Living Clocks of Marine Organisms

Cited by 30 publications

References 22 publications

Influence of tidal variation on reproductive timing

Influence of tidal variation on reproductive timing

Plasticity in reproductive timing by crabs in adjacent tidal regimes

Vertical migration rhythm in freshwater diatoms

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