نتایج جستجو برای: reproduction success
تعداد نتایج: 233624 فیلتر نتایج به سال:
When conditions are stressful, reproduction and population growth are reduced, but when favourable, reproduction and population size can boom. Theory suggests climate change is an increasingly stressful environment, predicting extinctions or decreased abundances. However, if favourable conditions align, such as an increase in resources or release from competition and predation, future climate c...
Theory predicts that sexual reproduction promotes disease invasion by increasing the evolutionary potential of the parasite, whereas asexual reproduction tends to enhance establishment success and population growth rate. Gyrodactylid monogeneans are ubiquitous ectoparasites of teleost fish, and the evolutionary success of the specious Gyrodactylus genus is thought to be partly due to their use ...
Genealogical, demographic, and economic data collected in a rural Trinidadian village indicate that: (1) individuals with more land have more offspring, (2) males with more land have higher mating success, (3) young adults with parents resident in the village have higher reproductive success, and (4) the residence o f father has a strong effect on young adult male reproductive success, but appa...
Previous studies have examined separately how pollinator generalization and abundance influence plant reproductive success, but none so far has evaluated simultaneously the relative importance of these pollinator attributes. Here we evaluated the extent to which pollinator generalization and abundance influence plant reproductive success per visit and at the population level on a generalist pla...
s:1750:"Background: We propose in this work to assess the effect of total and severe teratozoospermia on the outcome of intra cytoplasmic sperm injection( ICSI) essentially the biological side and try to highlight the factor in the success or failure of the attempt in cases of extreme or total teratozoospermia. Materials and Methods: This is a comparative retrospective study including 140 coupl...
Both predators and brood parasites can be major threats to the reproduction of many birds. A new study shows that some cuckoo chicks can help deter nest predators, potentially improving host reproductive success when predation risks are high.
The spectacular corporate collapses over the past decade, along with the introduction of the Sarbanes-Oxley Act and similar legislations across the world, have promoted significant awareness of IT governance. However, the causes of success and failure in IT governance framework adoption are yet to be adequately studied. This study aims to address this deficiency by proposing a research model to...
The importance of user acceptance of technology is critical for the success of technology implementation in the health-care sector. Spending on the procurement of new technology is growing in the hope of improving patient care as well as providing better services to the public, thus it is important that the technology is used to achieve its intended purpose. Success or failure of technology imp...
Ten years ago, we presented the DeLone and McLean Information Systems (IS) Success Model as a framework and model for measuring the complexdependent variable in IS research. In this paper, we discuss many of the important IS success research contributions of the last decade, focusing especially on research efforts that apply, validate, challenge, and propose enhancements to our original model. ...
This empirical study attempts to verify non-linearity relationships among three quality dimensions and user satisfaction from the DeLone and McLean IS Success Model. We use survey data from Agriculture integrated eXcellence systems (AgriX) users and a multiple regression analysis with dummy variables to analyze separately high and low performance groups. Results from the analysis suggest that i...
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