Results 31 to 40 of about 6,869,135 (344)

The Duration of Couples\' Childlessness: An Analysis of Differences and Determinants [PDF]

open access: yesمجله دانشگاه علوم پزشکی گرگان, 2023
Maryam Alimoradian , Hajiieh Bibi Razeghi Nasrabad *  , Maliheh Alimondegari , Abbas Askari-Nodoushan  Background and Objective: A basic factor in the reduction of fertility levels is delayed fertility.
Maryam Alimoradian   +3 more
doaj  

Adolescent Reproductive Knowledge, Attitudes, and Beliefs and Future Fatherhood. [PDF]

open access: yes, 2016
PurposeWith a growing focus on the importance of men's reproductive health, including preconception health, the ways in which young men's knowledge, attitudes, and beliefs (KAB) predict their reproductive paths are understudied.
Adam, Emma K   +7 more
core   +2 more sources

A genetic assessment of parentage in the blackspot sergeant damselfish, Abudefduf sordidus (Pisces: Pomacentridae) [PDF]

open access: yes, 2019
Microsatellite markers were used to investigate the reproductive behavior of the damselfish Abudefduf sordidus at Johnston Atoll, Central Pacific Ocean.
Barber, Paul H.   +3 more
core   +1 more source

Self-Efficacy in Positive Sexual Behavior among Students Participating in the Center for Information and Counseling of Reproductive Health in Madiun [PDF]

open access: yes, 2017
Background: The study aimed to determine the effectiveness of the Center for Information and Counseling of Reproductive Health in improving self-efficacy in positive social behavior among university students Madiun.
Haryadi, H. (Haryadi)   +2 more
core   +1 more source

Consanguineous marriages and their association with women’s reproductive health and fertility behavior in Pakistan: secondary data analysis from Demographic and Health Surveys, 1990–2018

open access: yesBMC Women's Health, 2020
Background Pakistan has been showing consistently the highest prevalence of consanguinity. The popularity of consanguineous marriages is not declining in the country, because of social, cultural, and religious beliefs as well as economic advantages ...
Sarosh Iqbal   +3 more
semanticscholar   +1 more source

The Associations of Internal Factors, Sources of Information, and Family Role with Premarital Sexual Behavior among Adolescents in Kupang, East Nusa Tenggara [PDF]

open access: yes, 2018
Background: Earlier studies reported that parents play a significant role in the sexual development and behaviors of their children. Parental monitoring and supervision are important paths for keeping adolescents from risky situations and activities ...
Gero, S. (Sabina )   +2 more
core   +1 more source

REPRODUCTION AND HABITAT OF TEN BRAZILIAN FROGS (ANURA) [PDF]

open access: yes, 2008
Basic data on habitat, behavior, and reproduction arelacking for most Neotropical frog species and even highertaxonomic groups (Crump 1974; Haddad and Prado2005), particularly for those restricted to the AtlanticForest.
Facure, Katia G., Giaretta, Ariovaldo A.
core   +2 more sources

EVIDENCE OF COMMUNAL OVIPOSITION AND NEST ABANDONMENT IN THE NORTHERN TWO-LINED SALAMANDER (EURYCEA BISLINEATA, (GREEN, 1818)) IN NORTHEASTERN CONNECTICUT [PDF]

open access: yes, 2014
Most plethodontid salamanders oviposit their eggs in an individual nest and attend the clutch until hatching. Here, we describe aspects of the reproduction of Eurycea bislineata (Northern Two-lined Salamander) from three field sites in northeastern ...
Ferguson, Taylor F.   +2 more
core   +2 more sources

Exploring the evolution of a trade-off between vigilance and foraging in group-living organisms

open access: yes, 2014
Despite the fact that grouping behavior has been actively studied for over a century, the relative importance of the numerous proposed fitness benefits of grouping remain unclear.
Adami, Christoph   +3 more
core   +1 more source

Male Seminal Fluid Substances Affect Sperm Competition Success and Female Reproductive Behavior in a Seed Beetle

open access: yesPLoS ONE, 2015
Male seminal fluid proteins are known to affect female reproductive behavior and physiology by reducing mating receptivity and by increasing egg production rates. Such substances are also though to increase the competitive fertilization success of males,
Takashi Yamane   +3 more
semanticscholar   +1 more source

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