نتایج جستجو برای: mating

تعداد نتایج: 23668  

Journal: :Biomedica : revista del Instituto Nacional de Salud 2007
Patricia Escandón Popchai Ngamskulrungroj Wieland Meyer Elizabeth Castañeda

INTRODUCTION Within the Cryptococcus neoformans species complex, two species and five serotypes are recognized: C. neoformans (var. grubii, serotype A; var. neoformans, serotype D and a hybrid, serotype AD) and C. gattii (serotypes B and C). Mating types a and alpha are designated by a single locus, with the mating type alpha being most prevalent in serotype A and D strains. OBJECTIVE To eval...

Journal: :Evolution; international journal of organic evolution 2004
Janis Antonovics Joseph Y Abrams

Mating among the immediate products of meiosis (intratetrad mating) is a common feature of many organisms with parthenogenesis or with mating-type determination in the haploid phase. Using a three-locus deterministic model we show that intratetrad mating, unlike other systems of mating, allows sheltering of deleterious recessive alleles even if there is only partial linkage between a mating loc...

Journal: :Journal of Social and Personal Relationships 2021

The centrality of religiosity in selecting long-term mates suggests atheism could be undesirable for that context. Given recent findings suggesting several positive stereotypes about atheists, a largely distrusted group, individuals prefer atheists mating domains not emphasizing commitment (i.e., short-term mating). Two studies tasked U.S. participants with evaluating and desirability theists w...

2012

We present an individual-based model dealing with mating as a process of pair formation. Model simulations, based on data from a 19-year study of Spanish imperial eagles, Aquila adalberti, showed that the mating pattern of a population is not necessarily a direct consequence of the mating preferences of individuals; positive age-assortative mating, by which individuals of similar age are more l...

Journal: :Journal of evolutionary biology 2011
N Thurin S Aron

Social Hymenoptera are ideal biological models for the study of the selective forces affecting the evolution of multiple mating (polyandry), because sister species can evolve different lifestyles and mating strategies. Single mating is predicted in workerless social parasites, because the key benefit of multiple mating in social insects, that is, the increase in genetic diversity among worker o...

2014
Wen Song Li Liu Pengyan Li Hui Sun Yuchuan Qin

The reproductive traits of the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae) were investigated and analyzed by different analytical methods. Simple statistical analysis showed relatively higher mating rates maintained from 21:00 to 2:00, thereafter dropping to a minimum at about 18:00. Mating rates were affected by female and male age. Mating was most likely to take plac...

Journal: :Evolution; international journal of organic evolution 2010
Alexei A Maklakov Luis Cayetano Robert C Brooks Russell Bonduriansky

Although there is continuing debate about whether sexual selection promotes or impedes adaptation to novel environments, the role of mating behavior in such adaptation remains largely unexplored. We investigated the evolution of mating behavior (latency to mating, mating probability and duration) in replicate populations of seed beetles Callosobruchus maculatus subjected to selection on life-hi...

Journal: :Philosophical transactions of the Royal Society of London. Series B, Biological sciences 2013
Stephen M Shuster William R Briggs Patricia A Dennis

Multiple mating by females is widely thought to encourage post-mating sexual selection and enhance female fitness. We show that whether polyandrous mating has these effects depends on two conditions. Condition 1 is the pattern of sperm utilization by females; specifically, whether, among females, male mating number, m (i.e. the number of times a male mates with one or more females) covaries wit...

2018
Timothy J Thurman Emily Brodie Elizabeth Evans William Owen McMillan

Mating systems have broad impacts on how sexual selection and mate choice operate within a species, but studies of mating behavior in the laboratory may not reflect how these processes occur in the wild. Here, we examined the mating behavior of the neotropical butterfly Heliconius erato in the field by releasing larvae and virgin females and observing how they mated. H. erato is considered a pu...

Journal: :Evolution; international journal of organic evolution 2007
Nicholas K Priest Deborah A Roach Laura F Galloway

In traditional deterministic models the conditions for the evolution of sex and sexual behavior are limited because their benefits are context dependent. In novel and adverse environments both multiple mating and recombination can help generate gene combinations that allow for rapid adaptation. Mating frequency often increases in conditions in which recombination might be beneficial; therefore,...

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