Intrasexual competition and female dominance in a singular breeding mammal, the Alpine marmot

2013 ◽  
Vol 86 (6) ◽  
pp. 1155-1163 ◽  
Author(s):  
Sophie Lardy ◽  
Dominique Allainé ◽  
Aurélie Cohas
Keyword(s):  
Intrasexual Competition ◽  
Female Dominance ◽  
Alpine Marmot

Experimental increase in female mass during the fertile phase leads to enhanced extra-pair paternity in pied flycatchers Ficedula hypoleuca

2019 ◽  
Author(s):  
Mireia Plaza ◽  
Alejandro Cantarero ◽  
Juan Moreno
Keyword(s):  
Negative Relationship ◽  
Ficedula Hypoleuca ◽  
Egg Laying ◽  
Female Dominance ◽  
Laying Date ◽  
Control Group ◽  
Wing Loading ◽  
Potential Fecundity ◽  
Fertile Phase ◽  
Extra Pair Paternity

Female mass in most altricial birds reaches its maximum during breeding at egg-laying, which coincides temporally with the fertile phase when extra-pair paternity (EPP) is determined. Higher mass at laying may have two different effects on EPP intensity. On the one hand, it would lead to increased wing loading (body mass/wing area), which may impair flight efficiency and thereby reduce female’s capacity to resist unwanted extra-pair male approaches (sexual conflict hypothesis). On the other hand, it would enhance female condition, favouring her capacity to evade mate-guarding and to search for extra-pair mates (female choice hypothesis). In both cases, higher female mass at laying may lead to enhanced EPP. To test this prediction, we reduced nest building effort by adding a completely constructed nest in an experimental group of female pied flycatchers (Ficedula hypoleuca). Our treatment caused an increase in mass and thereby wing loading and this was translated into a significantly higher EPP in the manipulated group compared with the control group as expected. There was also a significant negative relationship between EPP and laying date and the extent of the white wing patch, an index of female dominance. More body reserves at laying mean not only a higher potential fecundity but a higher level of EPP as well. This interaction had not previously received due attention but should be considered in future studies of avian breeding strategies.

The Response to Past Climate Perturbations Explains Extremely Low Genetic Diversity in the Genome of an Abundant Ice-Age Remnant, the Alpine Marmot

2018 ◽  
Author(s):  
Toni I. Gossmann​ ◽  
Achchuthan Shanmugasundram​ ◽  
Stefan Börno ◽  
Ludovic Duvaux ◽  
Christophe Lemaire​ ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Ice Age ◽  
Past Climate ◽  
Low Genetic Diversity ◽  
Alpine Marmot

Intersexual and Intrasexual Competition and Their Relation to Jealousy

2019 ◽  
pp. 214-236
Author(s):  
Abraham P. Buunk ◽  
Karlijn Massar ◽  
Pieternel Dijkstra ◽  
Ana María Fernández
Keyword(s):  
Sex Differences ◽  
Individual Differences ◽  
Menstrual Cycle ◽  
Attachment Styles ◽  
Mate Guarding ◽  
Intrasexual Competition ◽  
Online Infidelity ◽  
Intersexual Competition

This chapter discusses sex differences in intersexual competition and describes particularly the consequences of such competition for conflict between the sexes, as well as for sex differences in mate guarding and, relatedly, in the types of infidelity that evoke jealousy, including online infidelity. It also discusses individual differences in jealousy as related to attachment styles and describes the effects of height, hormones, and the menstrual cycle on jealousy. Next, the chapter moves on to intrasexual competition and discusses, among other topics, intrasexual competition among men and among women, the role of sex differences in rival characteristics in evoking jealousy, the role of attachment styles and hormones, and individual differences in intrasexual competitiveness.

scholarly journals Mate value, intrasexual competition and sociosexual desire drive Brazilian women's well-being

2021 ◽  
Vol 3 ◽  
Author(s):  
Anthonieta Looman Mafra ◽  
Renata Pereira Defelipe ◽  
Marco Antonio Correa Varella ◽  
John M. Townsend ◽  
Jaroslava Varella Valentova
Keyword(s):  
Well Being ◽  
Intrasexual Competition ◽  
Mate Value

Abstract

scholarly journals TO STUDY THE PREVALENCE AND CLINICAL PROFILE OF CHRONIC ATRIAL FIBRILLATION IN HOSPITALIZED PATIENTS

2014 ◽  
Vol 04 (02) ◽  
pp. 017-020
Author(s):  
Dharma Rao V. ◽  
Rajaneesh Reddy M. ◽  
Srikanth K. ◽  
Raj Kumar Prakash B. ◽  
Satya Prasad A. ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Heart Disease ◽  
Care Center ◽  
Tertiary Care ◽  
Chronic Atrial Fibrillation ◽  
Hospitalized Patients ◽  
Clinical Profile ◽  
Female Dominance ◽  
Elderly Age ◽  
Female Ratio

Abstract: Objective: To determine the prevalence of chronic atrial fibrillation (AF) in a tertiary care center and to identify the clinical profile of chronic AF in hospitalized patients. Methods: All patients admitted to Mamata General Hospital in medicine/cardiology wards with chronic AF (persistent and permanent) during the period January 2012 to December 2012 were included into the study. The principal exclusion criteria were new onset AF and acute AF. Results: During the study period, 49 patients were admitted with chronic AF with an average of 45.44 years. A slight female dominance was seen with male: female ratio of 1:1.2. Half of the patients (51%) were below the age 50 years. The elderly age group comprised of only 16.3% of cases. The commonest presenting complaint was dyspnea followed by palpitation. Rheumatic valvular heart disease was seen more commonly in people below the age of 50 years whereas hypertension and ischemic heart disease after 50 years. Heart failure was the commonest condition associated with the chronic AF and was the cause of hospitalization in almost fifty percent of cases Conclusion: Chronic AF is still a cause of concern in India in people below the age of 50 years due to high prevalence of rheumatic fever inspite of advances in the medical field.

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