MyMedR

Female employment and fertility in Peninsular Malaysia: the maternal role incompatibility hypothesis reconsidered

Mason KO, Palan VT

Demography, 1981 Nov;18(4):549-75.

Multivariate analysis of the 1974 Malaysian Fertility and Family Survey tests the hypothesis that an inverse relationship between women's work and fertility occurs only when there are serious conflicts between working and caring for children. The results are only partly consistent with the hypothesis and suggest that normative conflicts between working and mothering affect the employment-fertility relationship in Malaysia more than spacio-temporal conflicts do. The lack of consistent evidence for the hypothesis, as well as some conceptual problems, lead us to propose an alternative framework for understanding variation in the employment-fertility relationship, both in Malaysia and elsewhere. This framework incorporates ideas from the role incompatibility hypothesis but views the employment-fertility relationship as dependent not just on role conflicts but more generally on the structure of the household's socioeconomic opportunities.

Matched MeSH terms: Fertility*

Demographic development in ASEAN: a comparative overview

Herrin AN, Pardoko H, Lim LL, Hongladorom C

Philipp Rev Econ Bus, 1981 Sep-Dec;18(3-4):132-53.

PMID: 12178278

Matched MeSH terms: Fertility*

Migration and fertility in Malaysia: a tale of two hypotheses

Bach RL

Int Migr Rev, 1981;15(3):502-21.

PMID: 12337653

Matched MeSH terms: Fertility*

Dynamic disequilibrium: demographic policies and trends in Asia

Hull TH, Larson A

Asia Pac Econ Lit, 1987 May;1(1):25-59.

PMID: 12314890

Matched MeSH terms: Fertility*

[Population policy in some Asian countries]

Concepcion M

Rev Bras Estud Popul, 1987 Jan-Jul;4(1):61-76.

PMID: 12280935

Matched MeSH terms: Fertility*

The recent rise in Malay fertility: a new trend or a temporary lull in a fertility transition?

Hirschman C

Demography, 1986 May;23(2):161-84.

PMID: 3709893

Matched MeSH terms: Fertility*

Marital status composition and fertility: a comparative analysis of World Fertility Survey data

Kanjanapan W

Ingu munje nonjip, 1985 Jul.

PMID: 12222499

Matched MeSH terms: Fertility*

Female first marriage in East and Southeast Asia: a Kiefer-Neumann model

Montgomery MR, Sulak DB

J Dev Econ, 1989 Apr;30(2):225-40.

PMID: 12342575

Many studies have shown that schooling levels of husband and wife are important determinants of household behavior in developing countries. This article asks how the schooling levels of husband and wife come to be associated with each other through the marriage market. The Kiefer-Neumann model of labor market search is adapted to marital search, the aim being to explain both the positive sorting on educational levels for spouses, and the positive relationship between female schooling and age at 1st marriage. World Fertility Survey data for Indonesia, Korea, and Malaysia are employed in the analyses.

Matched MeSH terms: Fertility*

Multilevel models of fertility determination in four Southeast Asian countries: 1970 and 1980

Hirschman C, Guest P

Demography, 1990 Aug;27(3):369-96.

PMID: 2397819

Using microdata from the 1970 and 1980 censuses, we specify and test multilevel models of fertility determination for four Southeast Asian societies--Indonesia, Peninsular Malaysia, the Philippines, and Thailand. Social context is indexed by provincial characteristics representing women's status, the roles of children, and infant mortality. These contextual variables are hypothesized to have direct and indirect (through individual socioeconomic characteristics) effects on current fertility. The contextual variables account for a modest but significant share of individual variation in fertility and about one-half of the total between area variation in fertility. The women's status contextual variables, particularly modern sector employment, have the largest and most consistent effect on lowered fertility. The results based on the other contextual variables provide mixed support for the initial hypotheses.

Matched MeSH terms: Fertility*

Migration, income and fertility in Malaysia: a simultaneous equations model with limited dependent variables

Lee KS

Appl Econ, 1989;21:1589-610.

PMID: 12342770

Matched MeSH terms: Fertility*

The determinants of fertility: a theoretical forecasting model

Fish M, Thompson AA

Behav Sci, 1970 Jul;15(4):318-28.

PMID: 5424500

Matched MeSH terms: Fertility*

Mutual compensation of the effects of religious and ethnic homogamy on reproduction

Huber S, Fieder M

Am J Hum Biol, 2018 01;30(1).

PMID: 28960565 DOI: 10.1002/ajhb.23064

OBJECTIVES: Homogamy, mating based on similarity, has been demonstrated for a great variety of traits such as age, education, religion, and physical and psychological traits. Recently, pro-fertile effects of religious as well as educational homogamy have been reported. We investigate whether ethnic homogamy also has a pro-fertile effect and whether ethnic and religious homogamy interact in their putative effects on reproduction (in terms of average number of offspring).

METHODS: We analyzed the association between ethnic as well as religious homogamy and woman's average number of offspring based on census data from ten countries provided by IPUMS international, encompassing a total of 1,485,433 married women aged 46-60 years (who have thus completed or almost completed reproduction) and their spouses.

RESULTS: We find a clear pro-fertile but nonadditive effect of both ethnic and religious homogamy, which is most pronounced in the case of double homogamy. Our results further indicate that homogamy for one trait may compensate for heterogamy of the other, albeit countries differ regarding which trait compensates for the other.

CONCLUSIONS: We suggest that the interaction between ethnic homogamy, religious homogamy, and reproduction provides an interesting example for gene-culture co-evolution.

Matched MeSH terms: Fertility*

Sweet waste extract uptake by a mosquito vector: Survival, biting, fecundity responses, and potential epidemiological significance

Dieng H, Satho T, Abang F, Meli NKKB, Ghani IA, Nolasco-Hipolito C, et al.

Acta Trop, 2017 May;169:84-92.

PMID: 28174057 DOI: 10.1016/j.actatropica.2017.01.022

In nature, adult mosquitoes typically utilize nectar as their main energy source, but they can switch to other as yet unidentified sugary fluids. Contemporary lifestyles, with their associated unwillingness to consume leftovers and improper disposal of waste, have resulted in the disposal of huge amounts of waste into the environment. Such refuse often contains unfinished food items, many of which contain sugar and some of which can collect water from rain and generate juices. Despite evidence that mosquitoes can feed on sugar-rich suspensions, semi-liquids, and decaying fruits, which can be abundant in garbage sites, the impacts of sweet waste fluids on dengue vectors are unknown. Here, we investigated the effects of extracts from some familiar sweet home waste items on key components of vectorial capacity of Aedes aegypti. Adult mosquitoes were fed one of five diets in this study: water (WAT); sucrose (SUG); bakery product (remnant of chocolate cake, BAK); dairy product (yogurt, YOG); and fruit (banana (BAN). Differences in survival, response time to host, and egg production were examined between groups. For both males and females, maintenance on BAK extract resulted in marked survival levels that were similar to those seen with SUG. Sweet waste extracts provided better substrates for survival compared to water, but this superiority was mostly seen with BAK. Females maintained on BAK, YOG, and BAN exhibited shorter response times to a host compared to their counterparts maintained on SUG. The levels of egg production were equivalent in waste extract- and SUG-fed females. The findings presented here illustrate the potential of sweet waste-derived fluids to contribute to the vectorial capacity of dengue vectors and suggest the necessity of readdressing the issue of waste disposal, especially that of unfinished sweet foods. Such approaches can be particularly relevant in dengue endemic areas where rainfall is frequent and waste collection infrequent.

Matched MeSH terms: Fertility/drug effects*

NORMS FOR FAMILY SIZE IN UNDERDEVELOPED AREAS

FREEDMAN R

Proc. R. Soc. Lond., B, Biol. Sci., 1963 Dec 10;159:220-45.

PMID: 14087992 DOI: 10.1098/rspb.1963.0074

Matched MeSH terms: Fertility*

Trichinella spiralis: RNAi-mediated silencing of serine protease results in reduction of intrusion, development and fecundity

Yang DQ, Zeng Y, Sun XY, Yue X, Hu CX, Jiang P, et al.

Trop Biomed, 2020 Dec 01;37(4):932-946.

PMID: 33612747 DOI: 10.47665/tb.37.4.932

In previous studies, a Trichinella spiralis serine protease (TsSP) was identified in excretion/secretion (ES) products from intestinal infective L1 larvae (IIL1) using immunoproteomics. The complete cDNA sequence of TsSP gene was 1372 bp, which encoded 429 amino acids with 47.55 kDa. The TsSP was transcribed and expressed at all T. spiralis life cycle phases, as well as mainly located at the cuticle and stichosome of the parasitic nematode. Recombinant TsSP bind to intestinal epithelial cells (IEC) and promoted larva invasion, however, its exact function in invasion, development and reproduction are still unknown. The aim of this study was to confirm the biological function of TsSP during T. spiralis invasion and growth using RNA interference (RNAi) technology. The results showed that on 1 day after electroporation using 2.5 µM siRNA156, TsSP mRNA and protein expression of muscle larvae (ML) was suppressed by 48.35 and 59.98%, respectively. Meanwhile, silencing of TsSP gene by RNAi resulted in a 61.38% decrease of serine protease activity of ML ES proteins, and a significant reduction of the in vitro and in vivo invasive capacity of IIL1 to intrude into the IEC monolayer and intestinal mucosa. When mice were infected with siRNA 156-transfected larvae, adult worm and muscle larva burdens were decreased by 58.85 and 60.48%, respectively. Moreover, intestinal worm growth and female fecundity were evidently inhibited after TsSP gene was knockdown, it was demonstrated that intestinal adults became smaller and the in vitro newborn larval yield of females obviously declined compared with the control siRNA group. The results indicated that knockdown of TsSP gene by RNAi significantly reduced the TsSP expression and enzymatic activity, impaired larvae intrusion and growth, and lowered the female reproductive capacity, further verified that TsSP might participate in diverse processes of T. spiralis life cycle, it will be a new prospective candidate molecular target of anti-Trichinella vaccines.

Matched MeSH terms: Fertility*

Teenage births on the decline

Peng TN

Malays J Reprod Health, 1986 Dec;4(2):91-6.

PMID: 12314888

PIP: In Peninsular Malaysia, while the female population aged 15-19 years registered a growth of some 240,000 persons between 1966-1984, the number of births occurring to teenage mothers has decreased by 15,176 from 33,348 to 18,172 during the same period. In 1966, teenage births constituted some 10.8% of the total births but has declined to 4.7% by 1984. A breakdown of the 1984 data by detailed age groups shows that only 0.9% of the teenage births had actually occurred among those below 15 years of age. The declining trend in teenage births, particularly the higher order births among the very young mothers, augurs well for the improvement in family welfare. However, in order to safeguard the health and welfare of mothers and children, concerted efforts should continue to be undertaken to integrate population, family health and family life education into the school curriculum.

Matched MeSH terms: Fertility*

Women's perspectives towards traditional and complementary medicine used to conceive, during pregnancy and the postpartum period

Shaukat Ali R, Gnanasan S, Farooqui M

Complement Ther Clin Pract, 2018 Feb;30:109-115.

PMID: 29389469 DOI: 10.1016/j.ctcp.2017.12.009

OBJECTIVES: This study aims to explore pregnant and postpartum women's understanding of the meaning of traditional and complementary medicine (T&CM) and how that may affect their T&CM use.

METHODS: A cross-sectional study was conducted using self-administered questionnaires. Data collected from 374 women were analysed and represented via descriptive statistics.

RESULTS: Out of the 374 participants, 285 (76.2%) reported using at least one type of T&CM to conceive, during pregnancy or in the postpartum period. The majority of the participants identified that T&CM is all about plants or natural products without chemicals or drugs (n = 267, 71.4%, p 

Matched MeSH terms: Fertility*

Trio a novel bovine high-fecundity allele: II. Hormonal profile and follicular dynamics underlying the high ovulation rate

Garcia-Guerra A, Kamalludin MH, Kirkpatrick BW, Wiltbank MC

Biol Reprod, 2018 03 01;98(3):335-349.

PMID: 29425274 DOI: 10.1093/biolre/iox156

The newly discovered Trio high-fecundity allele produces multiple ovulations in cattle. This study evaluated (1) size and growth rates of follicles in Trio carriers during a synchronized follicular wave, induced by follicle aspiration; (2) follicle-stimulating hormone (FSH) patterns associated with the follicular wave; (3) size of corpora lutea (CL) and circulating progesterone; and (4) intrafollicular estradiol concentrations prior to normal deviation. Trio carriers had mean dominant follicles that were significantly smaller in diameter and volume than noncarriers. Onset of diameter deviation occurred at ∼3 days after the last follicle aspiration in both genotypes despite Trio carriers having much smaller individual follicles. Follicles of Trio carriers grew at a slower rate than noncarrier follicles (∼65% in mm/day or ∼30% in mm3/day) resulting in much smaller individual dominant follicles (∼25% volume). However, total dominant follicle volume, calculated as the sum of all dominant follicles in each animal, was similar in carriers and noncarriers of Trio throughout the entire follicular wave. Circulating FSH was greater in Trio carriers during the 24 h encompassing deviation. Trio carriers had significantly more ovulations than noncarriers, and individual CL volume was smaller, although total luteal tissue volume and circulating P4 were not different. Thus, increased ovulation rate in Trio carriers relates to smaller individual follicles (one-third the volume) near the time of deviation due to slower follicle growth rate, although time of deviation is similar, with increased circulating FSH near deviation leading to selection of multiple dominant follicles in Trio carriers with similar total follicle volume.

Matched MeSH terms: Fertility/genetics

Fulltext EVALUATION OF SUBLETHAL EFFECTS OF Ipomoea cairica LINN. EXTRACT ON LIFE HISTORY TRAITS OF DENGUE VECTORS

Zuharah WF, Ahbirami R, Dieng H, Thiagaletchumi M, Fadzly N

Rev Inst Med Trop Sao Paulo, 2016;58:44.

PMID: 27253746 DOI: 10.1590/S1678-9946201658044

Plant derived insecticides have considerable potential for mosquito control because these products are safer than conventional insecticides. This study aimed to investigate sublethal activities of Ipomoea carica or railway creeper crude acethonilic extract against life history trait of dengue vectors, Aedes albopictus and Aedes aegypti. The late third instar larvae of Ae. albopictus and Ae. aegypti were exposed to a sublethal dose at LC50 and larvae that survived were further cultured. Overall, Ipomea cairica crude extracts affected the whole life history of both Aedes species. The study demonstrated significantly lower egg production (fecundity) and eggs hatchability (fertility) in Ae. albopictus. The sublethal dose of crude extracts reduced significantly the width of larval head capsule and the wing length of both sexes in both Aedes species. The significance of sublethal effects of I. cairica against Aedes mosquitoes was an additional hallmark to demonstrate further activity of this plant despite its direct toxicity to the larvae. The reduced reproductive capacity as well as morphological and physiological anomalies are some of the effects that make I. cairica a potential candidate to be used as a new plant-based insecticide to control dengue vectors.

Matched MeSH terms: Fertility/drug effects

Fecundity, nymphal development and longevity of field-collected tropical bedbugs, Cimex hemipterus

How YF, Lee CY

Med Vet Entomol, 2010 Jun;24(2):108-16.

PMID: 20202109 DOI: 10.1111/j.1365-2915.2010.00852.x

This study examined the fecundity, oviposition, nymphal development and longevity of field-collected samples of the tropical bedbug, Cimex hemipterus (Fabricius) (Hemiptera: Cimicidae). Under environmental conditions of 26+/-2 degrees C, 70 +/- 5% relative humidity and a 12-h photoperiod, with bloodmeals provided by a human host, six strains of tropical bedbug had a fecundity of up to 50 eggs per lifetime, over 11-14 oviposition cycles. Increased feeding frequency improved fecundity. After feeding and mating, adult females normally took 2-3 days to produce a first batch of eggs. The oviposition period lasted 2-7 days before cessation of the oviposition cycle. The egg incubation period usually lasted 5-7 days before the emergence of first instars. The nymphs underwent five stadia (the first four of which each took 3-4 days, whereas the last took 4-5 days) before becoming adults at a sex ratio of 1 : 1. More than five bloodmeals were required by the nymphs to ensure a successful moult. Unmated adults lived significantly longer than mated adults (P < 0.05). Unmated females lived up to almost 7 months, but the longevity of mated males and females did not differ significantly (P > 0.05).

Matched MeSH terms: Fertility/physiology

Displaying publications 81 - 100 of 218 in total