Shades of gray mouse lemurs: Ontogeny of female dominance and dominance-related behaviors in a nocturnal primate

2015 ◽  
Vol 77 (11) ◽  
pp. 1158-1169 ◽  
Author(s):  
Sarah Hohenbrink ◽  
Maren Koberstein-Schwarz ◽  
Elke Zimmermann ◽  
Ute Radespiel
Keyword(s):  
Female Dominance ◽  
Mouse Lemurs

The influence of familiarity, age, experience and female mate choice on pregnancies in captive grey mouse lemurs

Behaviour ◽  
2003 ◽  
Vol 140 (3) ◽  
pp. 301-318 ◽  
Author(s):  
Elke Zimmermann ◽  
Ute Radespiel
Keyword(s):  
Mate Choice ◽  
Female Mate Choice ◽  
Female Dominance ◽  
Age Classes ◽  
Female Age ◽  
Female Mate ◽  
Sexual Behaviours ◽  
Mouse Lemurs ◽  
Reduced Rate ◽  
Old Females

AbstractConceptions in mammals may depend on a variety of factors including mate familiarity, age, sociosexual experience and female mate choice. We tested predictions for the effects of these factors on pregnancies in a captive colony of grey mouse lemurs (Microcebus murinus). The succession of oestrous cycles and pregnancies was analysed for a total of 26 different females that were housed together with 33 different males over a total of 124 oestrous cycles between 1995 and 2001. In addition, sexual behaviours were recorded and analysed over 13 oestrous cycles of 9 different females. An effect of mate familiarity on pregnancies could be detected by a frequent delay of pregnancies to the second cycle of the season (66.7% of the possible cases). Female age influenced pregnancies as the 2-3-year old females were less likely to become pregnant than females of other age classes. This reduced rate of pregnancies, however, was probably due to the lack of previous sociosexual experience with males. Females that have not been housed with males within their first reproductive season, needed one or two years of sociosexual experience before their first successful impregnation. These findings are discussed as a side effect of the ontogenetic development of female dominance. Female mate choice could be deduced from the succession of pregnancies and the strong responsibility of the females for the termination of matings.

Female dominance in captive gray mouse lemurs (Microcebus murinus)

2001 ◽  
Vol 54 (4) ◽  
pp. 181-192 ◽  
Author(s):  
Ute Radespiel ◽  
Elke Zimmermann
Keyword(s):  
Female Dominance ◽  
Microcebus Murinus ◽  
Mouse Lemurs

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.

scholarly journals Consumption of insect and plant exudates by mouse lemurs

2021 ◽  
Vol 19 (5) ◽  
pp. 282-282
Author(s):  
John F Mull ◽  
Sam Zeveloff
Keyword(s):  
Mouse Lemurs ◽  
Plant Exudates

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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