Results 11 to 20 of about 537,641 (265)

Density and reproductive characteristics of female brown bears in the Cantabrian Mountains, NW Spain

open access: yesThe European Zoological Journal, 2018
Here we present annual nearest-neighbour distances (as a proxy of density) between females with cubs-of-the-year (hereafter FCOY) and reproductive characteristics of brown bears Ursus arctos in the Cantabrian Mountains (NW Spain), from 1989 to 2017. FCOY
V. Penteriani   +10 more
doaj   +1 more source

Born to Win: Reproductive Health Policy and Urban Education Returns in China

open access: yesFrontiers in Public Health, 2022
This study explores the relationship between China's reproductive health policy and the rate of return on urban education by using fixed-effect, mediating-effect, and breakpoint regression models.
Qing Gao   +6 more
doaj   +1 more source

Bounding reproductive rates in state‐space models for animal population dynamics

open access: yesEcosphere, 2018
Time‐series models applied in the study of animal population dynamics commonly assume linearity on the log‐scale, leading to log‐normally distributed rates of increase.
Martin Sköld, Jonas Knape
doaj   +1 more source

Life table parameters of fig mite, Eotetranychus hirsti (Acari: Tetranychidae) under laboratory conditions

open access: yesPersian Journal of Acarology, 2013
Fig mite, Eotetranychus hirsti Pritchard & Baker, 1955, is one of the major pests of fig trees in Estahban (Fars province, Iran). Life table parameters of E. hirsti were studied at 30±1 °C, 60±10% R.H.
Negar Daneshnia   +2 more
doaj   +1 more source

No relationship between fecundity and annual reproductive rate in bony fish [PDF]

open access: yesActa Ichthyologica et Piscatoria, 2004
Background. There is still a widespread notion that bony fishes with high fecundities are more productive and therefore more resistant to overexploitation.
R. Froese, S. Luna
doaj   +3 more sources

Evaluasi Produktivitas Domba Ekor Gemuk Berdasar Reproductive Rate

open access: yesCaraka Tani: Journal of Sustainable Agriculture, 2018
Fat Tailed Sheep represent one of Indonesian livestock that having excellence of comparability with other ruminants livestock. The excellence is quickly adult, short of pregnant age, and has the nature of bearing twin, so if evaluated from development ...
Sigit Prastowo
doaj   +1 more source

Recombination rate and reproductive success in humans [PDF]

open access: yesNature Genetics, 2004
Intergenerational mixing of DNA through meiotic recombinations of homologous chromosomes during gametogenesis is a major event that generates diversity in the eukaryotic genome. We examined genome-wide microsatellite data for 23,066 individuals, providing information on recombination events of 14,140 maternal and paternal meioses each, and found a ...
Augustine, Kong   +13 more
openaire   +2 more sources

Comparison of IVF/ICSI outcomes in advanced reproductive age patients with polycystic ovary syndrome and advanced reproductive age normal controls: a retrospective cohort study

open access: yesBMC Pregnancy and Childbirth, 2023
Background At present, there are few studies on whether there is reproductive advantage in advanced polycystic ovary syndrome (PCOS) patients, and the existing research results are also controversial.
Xing Zhang, Fang Lian, Danqi Liu
doaj   +1 more source

Effect of Animal Welfare on the Reproductive Performance of Extensive Pasture-Based Beef Cows in New Zealand

open access: yesVeterinary Sciences, 2020
One key area where animal welfare may relate to productivity is through reproductive performance. This study assesses welfare on 25 extensively managed pastoral New Zealand beef farms, and explores the relationship between welfare and reproductive ...
Yolande Baby Kaurivi   +4 more
doaj   +1 more source

Artificial Symbiogenesis and Differing Reproduction Rates [PDF]

open access: yesArtificial Life, 2010
Symbiosis is the phenomenon in which organisms of different species live together in close association. Symbiogenesis is the name given to the process by which symbiotic partners combine and unify. This letter reconsiders previous work using the NKCS model of coevolution to explore symbiogenesis.
openaire   +3 more sources

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