scholarly journals Singing in the moonlight: dawn song performance of a diurnal bird varies with lunar phase

2014 ◽  
Vol 10 (1) ◽  
pp. 20130970 ◽  
Author(s):  
Jennifer E. York ◽  
Andrew J. Young ◽  
Andrew N. Radford
Keyword(s):  
Animal Communication ◽  
Lunar Cycle ◽  
Lunar Phase ◽  
Moon Phase ◽  
Communication Research ◽  
The Moon ◽  
Research Attention ◽  
Dawn Song ◽  
New Moon ◽  
Diurnal Species

It is well established that the lunar cycle can affect the behaviour of nocturnal animals, but its potential to have a similar influence on diurnal species has received less research attention. Here, we demonstrate that the dawn song of a cooperative songbird, the white-browed sparrow weaver ( Plocepasser mahali ), varies with moon phase. When the moon was above the horizon at dawn, males began singing on average 10 min earlier, if there was a full moon compared with a new moon, resulting in a 67% mean increase in performance period and greater total song output. The lack of a difference between full and new moon dawns when the moon was below the horizon suggests that the observed effects were driven by light intensity, rather than driven by other factors associated with moon phase. Effects of the lunar cycle on twilight signalling behaviour have implications for both pure and applied animal communication research.

scholarly journals On certain variations of the mean height of the barometer, mean temperature and depth of rain, connected with the lunar phases, in the cycle of years from 1815 to 1823

1843 ◽  
Vol 4 ◽  
pp. 211-211
Keyword(s):  
Full Moon ◽  
Lunar Cycle ◽  
Lunar Phase ◽  
The Moon ◽  
Lunar Phases ◽  
Mean Temperature ◽  
The Mean ◽  
New Moon ◽  
Made In

The table given in this paper contains the results of calculations relating to the objects specified in the title; cast into periods of six, seven, or eight days, so as to bring the day of the lunar phase belonging to it in the middle of the time. The observations were all made in the neighbourhood of London. It appears from them that in the period of the last quarter of the moon the barometer is highest, the temperature a little above the mean, and the depth of rain the smallest. In the period of the new moon, both the barometer and temperature are considerably depressed, and the rain increased in quantity. The influence of the first quarter shows itself by the further depression of the barometer; but the temperature rises almost to the point from which it had fallen, and the rain still increases, but not in an equal ratio. Lastly, the full moon again reduces the temperature; while the barometer attains its maximum mean height, and the quantity of rain is the greatest. Thus it appears, that during this lunar cycle, the approach of the last quarter is the signal for the clearing up of the air, and the return of sunshine.

Lunar Cycle Influences Reproductive Performance of Crossbred Brahman Cows Under Tropical Conditions

2021 ◽  
pp. 074873042098363
Author(s):  
Alejandro A. Aguirre ◽  
Roberto A. Palomares ◽  
Aitor D. De Ondiz ◽  
Eleazar R. Soto ◽  
Mariana S. Perea ◽  
...  
Keyword(s):  
Reproductive Performance ◽  
Full Moon ◽  
Lunar Cycle ◽  
The Moon ◽  
Crossbred Cows ◽  
Lunar Phases ◽  
Tropical Conditions ◽  
Service Conception ◽  
New Moon ◽  
Postpartum Estrus

Evidence has accumulated over the years indicating that the moon influences some aspects of the reproductive activity in animals and humans. However, little is known about the influence of the lunar cycle on the reproductive performance of cows under tropical conditions, where the environment strongly affects reproduction. This retrospective study was conducted with the aim of assessing the influence of the lunar cycle on some reproductive traits of tropical crossbred cows managed in a pasture-based system. Data from 5869 reproductive records from two commercial farms localized in the Maracaibo Lake Basin of Zulia State, Venezuela, were analyzed. Variables studied were first service conception rate, calving frequency, first postpartum estrous frequency, and pregnancy frequency. In addition to the lunar cycle, the effects of farm, season, and predominant breed were also considered. Data were analyzed using logistic regression and general linear model from SAS. First service conception was affected by lunar phases and predominant breed, but not by farm or season. For frequencies of calving, first postpartum estrus, and pregnancy, there was no main effect of farm, season, and predominant breed, whereas the effect of lunar phases was highly significant. First service conception was significantly greater in waning than in crescent phase of the lunar cycle. Frequencies of calving, first estrus, and pregnancy were highly correlated and showed greater figures around full moon and new moon. In conclusion, lunar cycle influenced first service conception, attaining greater values in the waning phase of the moon cycle. Frequencies of calving, first postpartum estrus, and pregnancy in crossbred cows showed a clear bimodal rhythm, whose greatest values coincided with new moon and full moon.

scholarly journals Lunar periodicity in catch rate and reproductive condition of adult eastern king prawns, Penaeus plebejus, in coastal waters of south-eastern Queensland, Australia

1996 ◽  
Vol 47 (1) ◽  
pp. 67 ◽  
Author(s):  
AJ Courtney ◽  
DJ Die ◽  
JG McGilvray
Keyword(s):  
Coastal Waters ◽  
Full Moon ◽  
Lunar Cycle ◽  
Catch Rate ◽  
Lunar Phase ◽  
Reproductive Condition ◽  
Ovary Weight ◽  
South Eastern ◽  
New Moon ◽  
Catch Rates

This study examined the lunar and die1 variation in catch rates and reproductive condition of adult eastern king prawns, Penaeus plebejus, in relatively deep (160 m) coastal waters off south- eastern Queensland. Females numerically dominated catches over most of the lunar cycle and constituted 76% of the weight of the catch. Analysis of variance (ANOVA) revealed an interaction between lunar phase and sex; catches peaked during Lunar Phase 3 (full moon � 3 days) and were particularly marked for males. This was the only period during the lunar cycle when the sex ratio approached 1 : 1. There was also an interaction between trawl-time and sex; male catch rates were at a minimum early in the evening, whereas female catch rates were at a maximum then and declined throughout the night. Trawler logbook catch rate data from the same area over a similar period indicated an interaction between lunar cycle and lunar phase. ANOVA revealed an effect of the interaction between phase and sex on the incidence of soft prawns; the incidence of soft males increased during Phase 4 (half moon waning to new moon � 3 days). Ovary weight also varied between phases and was higher during Phases 2 (half moon waxing to full moon � 3 days) and 4 (half moon waning to new moon � 3 days). Trends in the ovary weight and the incidence of histologically mature and ripe females suggested there are two periods of increased spawning activity during each lunar cycle. A cyclic regression fitted to the data explained 93% of the variation in the incidence of ripe females between samples. The influence of these cyclic trends in catch rate and reproductive condition should be considered when monitoring the spawning stock in the fishery and when planning sampling strategies in any future reproductive studies.

Microwave Thermal Radiation from the Moon

1949 ◽  
Vol 2 (1) ◽  
pp. 63 ◽  
Author(s):  
JH Piddington ◽  
HC Minnett
Keyword(s):  
Thermal Radiation ◽  
Phase Angle ◽  
Electromagnetic Waves ◽  
Lunar Phase ◽  
Phase Lag ◽  
The Moon ◽  
Average Temperature ◽  
Deep Interior ◽  
Subsurface Layers ◽  
New Moon

Measurements have been made of the thermal radiation from the moon in a 15 Mc/s. band, centred at 24,000 Mc/s. The radiation from the whole lunar disk has been measured during several phase cycles. Temperatures corresponding to this radiation have been deduced and curves of temperature against phase angle drawn. One of these corresponds to average temperature over the disk and the other to the temperature of a point on the lunar equator. They are found to be approximately sinusoidal, with amplitude � 40.3 �K, and � 52.0 �K. respectively and with a phase lag behind the lunar phase angle of about 45� in each case. These results conflict with previous measurements of temperature at long infra-red wavelengths in both amplitude and phase angle of the temperature curve. An explanation is given in terms of radiation from subsurface layers of the moon's crust, which are partially transparent to the electromagnetic waves with which we are dealing. The theory is developed quantitatively and it is found that the results are consistent with the existence of a thin layer of dust covering a solid lunar surface. Estimates are made of the temperatures of the disk of the new moon (156 �K.) and of the deep interior (241 �K.).

scholarly journals Morfometri Portunus pelagicus Linnaeus, 1758 (Malacostraca : Portunidae) Pada Fase Bulan Yang Berbeda Di Perairan Betahwalang, Demak

2019 ◽  
Vol 8 (2) ◽  
pp. 204-210
Author(s):  
Errizal Machmud Putra ◽  
Rini Pramesti ◽  
Gunawan Widi Santosa
Keyword(s):  
Full Moon ◽  
Environmental Parameters ◽  
Moon Phase ◽  
Swimming Crab ◽  
The Moon ◽  
Portunus Pelagicus ◽  
Natural Factors ◽  
New Moon ◽  
Descriptive Method

Rajungan (Portunus pelagicus) merupakan komoditas unggulan Indonesia. Perairan Betahwalang, Kabupaten Demak memiliki sumberdaya rajungan yang  potensial dengan tingkat eksploitasi yang tinggi. Rajungan ini ditangkap setiap hari tanpa memperhatikan faktor alam berupa fase bulan yang menyebabkan menurunnya populasi. Informasi penangkapan berdasarkan fase bulan diperlukan agar populasi rajungan dapat terjaga. Tujuan Penelitian ini adalah mengkaji jumlah dan sebaran morfometri rajungan yang tertangkap pada fase bulan purnama dan bulan baru di perairan Betahwalang. Penelitian ini dilakukan dari November 2017 sampai Februari 2018 di perairan Betahwalang. Metode penelitian yang digunakan yaitu metode deskriptif. Penentuan lokasi penelitian berdasarkan area penangkapan rajungan di perairan Betahwalang. Pengambilan data dilakukan 8 kali dari tanggal 5 November 2017 sampai 18 Februari 2018. Pengambilan data berupa jumlah, lebar karapas, berat, jenis kelamin rajungan, dan parameter lingkungan. Hasil penelitian menunjukkan total rajungan tertangkap yaitu 448 ekor, 296 ekor pada Bulan Purnama dan 152 ekor pada Bulan Baru. Morfometri rajungan ukuran ≤ 10 cm pada Bulan Purnama 190 ekor lebih banyak dari Bulan Baru 90 ekor. Rajungan ukuran > 10 cm pada Bulan Baru 106 ekor lebih banyak dari Bulan Baru 62 ekor. Blue Swimming Crab (Portunus pelagicus) is Indonesia's flagship commodity. The waters of Betahwalang, Demak Regancy have potential Blue Swimming Crab resources with high levels of exploitation.  The crabs are catched every day regardless of natural factors, such as the moon phase that causes the population to decline. Blue Swimming Crab catch’s information based on the moon phase is required for the population to sustaine. The purpose of this research is to study the amount and distribution of Blue Swimming Crab morphometry catched on the full and new moon phase in Betahwalang waters. The study was conducted from November  2017 till February 2018 in the waters of Betahwalang. The research method used was descriptive method. Determination of research location based on Blue Swimming Crab catching area in Betahwalang waters. The data were collected 8 times from November 5, 2017 till February 18, 2018. Data were collected in number, width of carapace, weight, sex, and environmental parameters. The results showed total of catched crabs, were 296 crabs on Full Moon, and 152 crabs on New Moon. Blue Swimming Crab morphometry size ≤ 10 cm on Full Moon was 190 crabs more than New Moon was 90 crabs. Then, in Size> 10 cm on New Moon was 106 crabs more than New Moon was 62 crabs.

scholarly journals Composition, density and biomass of fish community from the surf zone as a function of the lunar cycle at Miramar Beach in Cabedelo, Paraíba

2019 ◽  
Vol 17 (2) ◽  
Author(s):  
Willy Vila Nova Pessoa ◽  
Jonas de Assis Almeida Ramos ◽  
Paulo Guilherme Vasconcelos de Oliveira
Keyword(s):  
Surf Zone ◽  
Abundant Species ◽  
Lunar Cycle ◽  
Species Group ◽  
Biological Interactions ◽  
The Moon ◽  
Group I ◽  
The Mean ◽  
New Moon ◽  
Density And Biomass

ABSTRACT The influence of the moon cycles on the ichthyofauna has been little studied in the surf zone. In this study, the number of species, density and biomass were evaluated as a function of the moon. A total of 49 species distributed in 24 families were captured in two areas of Miramar beach. The mean density was significant high in the weaning and low in the new moon, while density and biomass together showed differences for areas. The most abundant species were Anchoa tricolor and Trachinotus falcatus (new moon), and Anchovia clupeoides showed significant differences in the waning moon. The RDA indicates that turbidity influenced significantly the presence of two species group. The group I were represented by Stellifer brasiliensis, Trachinotus goodei, A. clupeoides, Chilomycterus spinosus and Conodon nobilis that occurred on the waning and new phases in both areas, while the group II were represented by Polydactylus virginicus and Haemulopsis corvinaeformis in the full moon. The surf zones may also be strongly governed by the lunar phases. Therefore, the results found in this study, showed that the biological interactions between the species with turbidity and moon might explain the density and biomass variations for some species in the surf zone.

Activity of Microtus pennsylvanicus related to moon phase and moonlight revealed by the sand transect technique

1969 ◽  
Vol 47 (6) ◽  
pp. 1183-1186 ◽  
Author(s):  
G. J. Doucet ◽  
J. R. Bider
Keyword(s):  
Population Growth ◽  
Full Moon ◽  
Microtus Pennsylvanicus ◽  
Moon Phase ◽  
The Moon ◽  
Moon Phases ◽  
Paired Samples ◽  
Sampling Sequence ◽  
New Moon

Activity of Microtus pennsylvanicus was recorded as the number of crossings per day over a sand transect during four consecutive summers. Appropriate samples were selected to test the effects of both moon phases and moonlight on activity. Initially the results of tests comparing new moon to full moon phases showed that the voles were more active during new moon in only 3 of 10 discreet paired samples tested. However, when the effects of sampling sequence, phenology of population growth, date at which moon phases occurred, and, finally, the effect of climate were all considered as factors which could have affected the above results, it seemed reasonable to conclude that the new moon phase tended to be associated with higher activity. To establish if moonlight by itself, independent of phases, was a factor affecting the activity, tests were made during brightest and darkest nights of the lunar month and results indicated that moonlight did not affect the differences in activity found in the moon phase tests.

The influence of moonlight on catches of insects in light-traps in Africa. Part I. The moon and moonlight

1973 ◽  
Vol 63 (1) ◽  
pp. 113-128 ◽  
Author(s):  
John Bowden
Keyword(s):  
Light Trap ◽  
Lunar Cycle ◽  
Moon Phase ◽  
The Moon ◽  
Light Traps ◽  
Trap Catch

AbstractAn account is presented of the distribution and amounts of moonlight in latitudes near the equator. This includes a Table on the amount of moonlight for each hour of the night throughout a standard lunar cycle, applicable to any locality between 10°N and 10°S, and a Table of standard groups of moon phase which can be used at any locality irrespective of latitude. The construction of these Tables is described in detail and their use briefly discussed. A method is described which enables light-trap catch records to be arranged for analysis directly against moon phase.

The biting habits of Culicoides furens (Poey) and C. barbosai Wirth & Blanton. III. Seasonal cycle, with a note on the relative importance of ten factors that might influence the biting rate

1972 ◽  
Vol 61 (3) ◽  
pp. 565-576 ◽  
Author(s):  
D. S. Kettle
Keyword(s):  
Seasonal Cycle ◽  
Full Moon ◽  
Lunar Cycle ◽  
Relative Importance ◽  
The Moon ◽  
Illumination Time ◽  
Biting Rate ◽  
New Moon ◽  
Phases Of The Moon ◽  
Cycle Temperature

The biting rates of Culicoides furens (Poey) and C. barbosai Wirth & Blanton on Florida Beach, Jamaica, were observed in 50 trials conducted 40–115 min after dawn from 5 February 1960 to 10 February 1961. The data were logarithmically transformed and non-zero biting rates standardised. Biting rates of both species varied markedly from week to week but monthly mean rates were significantly higher and lower for C. furens in September (111·4) and March (13·7), respectively. Monthly mean rates for C. barbosai fell into three groups, (i) March-June (15·3); (ii) November–December (9·1); (iii) January–February and July–October (3·1). These changes were negatively correlated with mean sea level. Biting rates of C. barbosai were highest at new moon (10·3) and lower but similar (4·3–5·2) for the other three phases of the moon. Those of C. furens were maximal at new moon (62·8), minimal at full moon (20·4) and intermediate (35·9, 39·5) at the quarters. The lunar effect is assumed to act through the tides. There were no significant differences between the standardised biting rates at different times after dawn. In a comparison of the quantitative effects of ten factors on the biting rates of C. furens, C. barbosai and Leptoconops becquaerti (Kieff.), most important were month of year and wind speed; of less importance were lunar cycle, temperature, collector and limb exposed; while site position, intensity of illumination, time after dawn, saturation deficit were of minor or no importance. It is concluded that the biting rate of L. becquaerti should be the least affected by changes in these factors, C. barbosai more affected and C. furens most affected.

Canine and Feline Epileptic Seizures and the Lunar Cycle: 2,507 Seizures (2000–2008)

2011 ◽  
Vol 47 (5) ◽  
pp. 324-328 ◽  
Author(s):  
Laura Browand-Stainback ◽  
Donald Levesque ◽  
Matthew McBee
Keyword(s):  
Generalized Estimating Equations ◽  
Statistical Significance ◽  
Estimating Equations ◽  
Epileptic Seizures ◽  
Lunar Cycle ◽  
Idiopathic Epilepsy ◽  
Lunar Phase ◽  
The Moon ◽  
Anticonvulsant Treatment ◽  
Phases Of The Moon

Epileptic seizures in 211 canine and feline patients diagnosed with idiopathic epilepsy were evaluated for temporal significance in relation to the lunar cycle. Seizure counts were compared among each of the eight individual lunar phases, among each of eight exact lunar phase dates, and by percent of lunar illumination using generalized estimating equations. No statistical significance was found in any of these comparisons excluding a relationship between the onset of epileptic seizures and the phases of the moon. Alteration in anticonvulsant treatment or monitoring of canine and feline patients with idiopathic epilepsy at large was not warranted based on the lunar cycle.

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