Lunar Periodicity in Homo sapiens L

Gunn, D. L.; Jenkin, Penelope M.; Gunn, Alistair L.

doi:10.1038/139841a0

Cited by 8 publications

(4 citation statements)

References 1 publication

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“…But the association with age disappears when length of cycle is fixed [Gibson & Dougray, 1953], which suggests that it is the interval between onset of menstruation and ovulation which decreases slightly with age, rather than the period between ovulation and birth. This inter¬ pretation is consistent with reports that length of cycle is negatively correlated with age [Gunn, Jenkin & Gunn, 1937;McKeown, Gibson & Dougray, 1954]. The associa¬ tion between gestation and parity is, however, independent of both length of cycle and maternal age [Gibson & Dougray, 1953] which suggests that in single pregnancy the period between ovulation and birth decreases slightly with increasing parity.…”

Section: Resultssupporting

confidence: 91%

Influence of Maternal Size and Parity on Onset of Labour in Multiple Pregnancy in Man

McKeown¹,

Record²

1954

Journal of Endocrinology

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The association between duration of gestation and (a) parental height, and (b) mother's parity is examined in 1028 single and 375 twin maternities. With increasing height of mother, duration of gestation increases in multiple pregnancy; the two variables are unrelated in single pregnancy. With increasing parity, duration of gestation increases in multiple pregnancy and decreases slightly in single pregnancy. It is suggested that these observations provide support for the view that the early onset of labour in multiple pregnancy may be due to the size of the foetuses.

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Section: Resultssupporting

confidence: 91%

Influence of Maternal Size and Parity on Onset of Labour in Multiple Pregnancy in Man

McKeown¹,

Record²

1954

Journal of Endocrinology

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“…Basically, the prevailing argument explains lunar influence as based on ancestral beliefs, that is, a sort of fossilized magical conception (Binkley, 1992;Binkley et al, 1990;Gunn et al, 1937;Martens et al, 1988;Trap et al, 1989).…”

Section: Lunar Cyclementioning

confidence: 97%

Lunar and Seasonal Rhythms and Childhood Mortality

Leon¹,

Santillán-Doherty²,

Camacho³

et al. 2003

Biological Rhythm Research

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The aim of the present study was to assess the effect of the lunar cycle phases, the lunar apogee and perigee, and the geophysical factors (humidity, temperature, and rainfall) on the childhood mortality. We designed a retrospective study by reviewing the clinical charts of the population of patient deceases during the lunar pre-phase (a day before), phase (day of lunar change of phase), and post-phase (a day after), between the years 1991-1996 in a children's hospital. From the 44,982 discharges from the hospital in the interval between 1991 and 1996, 2003 corresponded to mortal cases, and 522 died within the 3 days we considered as representative for each phase. The number of deaths was approximately the same in between phases. The percentage of male deaths was higher during phase days than interphase ones. Male deceases exhibited a statistically significant predominance during lunar first quarter, full moon, and new moon. A discreet increase of mortality was present in the months of March, June, August, September, October, and November, as well as during summer and fall, but these increments were not significant. Minimum and maximum temperatures exhibited no relation to this behavioral pattern for deceases, nor the humidity index. Early lactating infants presented a significant higher mortality

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“…pusillus, which lives almost entirely on decaying leaves in nature, it was found that, with only one exception, all the species took readily to a diet consisting exclusively of fresh carrot. This diet, suggested in the first place by Gunn (1937), was adopted throughout, and proved to be sufficient for the complete rearing of these creatures ; several families being reared from birth to upwards of two years on an exclusive diet of fresh carrot. Other substances, such as potatoes, mushrooms, bark of trees, and leaf-mould were tried, but none were so universally favourable as carrot.…”

Section: Methodsmentioning

confidence: 99%

Observations on the Life‐Histories of some Terrestrial Isopods

B.Sc.¹

1941

Proceedings of the Zoological Society of London

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Summary. Numerous specimens of six common species of British Woodlice have been kept in captivity and allowed to breed freely for two‐and‐a‐half years. Observations have been made on their habits, choice of food, humidity requirements, moulting, growth stages, and breeding, and compared with parallel observations in the field. The choice of habitat of Woodlice is largely determined by their humidity requirements, which vary considerably with the species. This factor is of greater importance than food supply, light, temperature, or oxygen requirements. The durations of the successive stages in the breeding processes, whilst varying with the different species, are more or less constant for each particular species. There is, however, a universal slight departure from this regularity of the stages among (a) those which are the earliest in the year of each species to breed, (b) those producing a second brood in the year. The regularity in the c which arc connected with the breeding processes is not shown during the non‐breeding periods of the year, or in the male sex. The average ratios of the larval period to the embryonic period of development in the brood pouch, in the different species, increase approximately in direct proportion to the average numerical sizes of the broods. The moulting and growth stages of the young of all the species show a marked regularity in their times of occurrence, up to the age of at least six months. Their rate of increase in size is fairly constant, and is not apparently governed by the mounts. A comparative study of the growth of the young shows that certain anatomical features, common to all the species, characterize successive stages in growth, whilst the order in which the distinguishing characters of the different species arise in development coincides with the line of ontogeny tacitly assumed in the classification of the group. The adults show a definite and well‐marked seasonal periodicity in their phases of breeding activity, which varies both in time of occurrence and in duration with the different species, but which is more or less constant for each particular species. The times of maximum breeding activity occur twice in one year in some species (in which case only from 10—‐30 per cent, of the individuals breed on the second occasion), and only once in other species. A résumé is given of the entire life‐history, in the course of which attention is directed to a consideration of the controlling factors of certain stages and physiological processes concerned with growth and moulting.

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Lunar Periodicity in Homo sapiens L

Cited by 8 publications

References 1 publication

Influence of Maternal Size and Parity on Onset of Labour in Multiple Pregnancy in Man

Influence of Maternal Size and Parity on Onset of Labour in Multiple Pregnancy in Man

Lunar and Seasonal Rhythms and Childhood Mortality

Observations on the Life‐Histories of some Terrestrial Isopods

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