American Scientists on the structure of social life amongst Baboons

1964 ◽  
Vol 2 (01) ◽  
pp. 13-18
Author(s):  
David Agee Horr ◽  
Peter Warshall
Keyword(s):  
Adult Male ◽  
Social Life ◽  
Adult Males ◽  
Animal Kingdom

If one watches a troop of baboons closely, the major categories of individuals present can soon be distinguished. The largest animais are invariably the adult males and, in some areas (such as Nairobi Park), their size is exaggerated by a very heavy mantle of fur around the heads and shoulders. An adult male baboon has the distinction of possessing perhaps the largest canine teeth of his size in the animal kingdom. These have developed as a means of defence and are sufficiently impressive to keep most other animais at a distance.

HAPTEN-RADIOIMMUNOASSAY OF PLASMA OESTRADIOL

1973 ◽  
Vol 72 (2) ◽  
pp. 330-344 ◽  
Author(s):  
Peter Doerr
Keyword(s):  
Adult Male ◽  
Normal Values ◽  
Normal Adult ◽  
Adult Males ◽  
Reagent Blank ◽  
Keyhole Limpet Haemocyanin ◽  
Ether Extraction ◽  
The Mean ◽  
Assay Precision ◽  
Plasma Oestradiol

ABSTRACT A hapten-radioimmunoassay for plasma oestradiol is described and information about the reliability of the method is given in detail. Oestradiol-3-hemisuccinate coupled to keyhole limpet haemocyanin is used for immunization of rabbits. The antiserum utilized for the assay is characterized by its titer, affinity and specificity. Following ether extraction and NaOH-light petroleum partition oestradiol is separated from crossreacting oestrogens by TLC. Oxidation of oestradiol on the plate is prevented by mercaptoethanol. To separate free and antibody bound ligand 250 μg dextran-coated charcoal per tube is used in the presence of bovine serum gammaglobulin (1 mg/ml). The between-assay precision based on 15 different determinations of control samples from normal adult male plasma was 9.4% (C. V.). The mean reagent blank value of 31 determinations was equivalent to 0.3 pg oestradiol and the detection limit in terms of the 99% confidence limit for a single blank value, was equivalent to 4.3 pg oestradiol. A procedure for detecting plasma blanks is described. Plasma oestradiol is separated from approximately all concomitant substances originally present in the sample by enzymatic conversion into oestrone and a second TLC. No plasma blanks could be detected with respect to normal adult male plasma. Normal values for adult males based on 51 subjects were characterized by a median of 17.2 pg/ml and the 95 percentiles of 9.5–27.6.

Bonobo baby dominance: Did female defense of offspring lead to reduced male aggression?

2018 ◽  
Author(s):  
Kara Walker ◽  
Brian Hare
Keyword(s):  
Adult Male ◽  
Social System ◽  
Dominant Species ◽  
Potential Solution ◽  
Adult Males ◽  
Male Aggression ◽  
Dominance Style ◽  
The Social ◽  
Initial Support

The dominance style of bonobos presents an evolutionary puzzle. Bonobos are not male dominant but female bonobos do not show traits typical of female-dominant species. This chapter proposes the offspring dominance hypothesis (ODH) as a potential solution. ODH suggests the social system of bonobos evolved as a defence against infanticide and is not due to pressure to monopolize resources. Females that prevented aggression towards offspring and preferred mating with less aggressive males were most successful. Supporting ODH, during observations at Lola ya Bonobo Sanctuary it was found that: 1) adult male bonobos are rarely aggressive towards offspring with mothers, 2) some mother-reared juvenile bonobos attain rank higher than adult males and 3) mother-reared offspring often socially interact with adult males without their mothers nearby. These preliminary findings provide initial support that the bonobo social system evolved due to fitness advantages of effectively protecting offspring against consequences of male aggression. Le style de dominance des bonobos présente un puzzle évolutionnaire. Les bonobos ne sont pas dominés par les mâles mais les bonobos femelles ne montrent pas les traits caractéristiques d’une espèce dominée par femelles. On propose l’hypothèse de dominance de progéniture (ODH) comme une solution potentielle. La ODH suggère que le système social des bonobos a évolué en défense contre l’infanticide et pas sous pression pour la monopolisation des ressources. Les femelles qui préviennent l’agression vers leur progéniture et leur préférence d’accouplement avec des mâles moins agressives étaient très efficaces. À l’appui de la ODH on a trouvé pendant nos observations à Lola ya Bonobo Sanctuary que: 1) les mâles adultes bonobos agressent rarement vers les bébés avec mères, 2) quelques adolescents bonobos qui furent élevés par leurs mères atteignent un rang plus haut que les mâles adultes et 3) la progéniture élevée par la mère interagissent avec avec d’adultes mâles sans la présence de leur mère. Ces trouvailles préliminaires donnent appuie à l’hypothèse que le système social des bonobos a évolué par les avantages corporelles de la protection de la progéniture contre les conséquences de l’agression mâle.

scholarly journals Sex Difference in Self-Reported Sexual Functioning Among Frail Older Adults

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 313-313
Author(s):  
Brianne Olivieri-Mui ◽  
Sandra Shi ◽  
Ellen McCarthy ◽  
Dae Kim
Keyword(s):  
Older Adults ◽  
Logistic Regression ◽  
Sex Differences ◽  
Sexual Function ◽  
Older Adult ◽  
Sexual Functioning ◽  
Social Life ◽  
Well Being ◽  
Adult Males ◽  
Males And Females

Abstract Frailty may differentially impact how older adult males and females perceive sexual functioning, an important part of well-being. We assessed the level of frailty (robust, pre-frail, frail) for anyone with data on 11 sexual functioning questions asked in wave 2 of the National Social Life, Health, and Aging Project, 2010-2011 (n=2060). Questions covered five domains: overall sexual function (OSF), sexual function anxiety (SFA), changes in sexual function (CSF), erectile/vaginal dysfunction (EVD), and masturbation. Logistic regression identified sex differences in frailty and reporting worse sexual functioning. Linear regression predicted the number of domains reported as worse. Among males (n=1057), pre-frailty meant higher odds of reporting SFA (OR 1.8 95%CI 1.2-6.6), CSF (OR 1.7 95%CI 1.1-2.7), and EVD (OR 1.5 95%CI 1.0-2.2). Among females (n=1003), there was no difference in reporting by frailty. Females were more likely to report worse OSF (Robust: OR 7.4, 95%CI 4.8-11.4; Pre-frail: OR 6.2, 95%CI 3.9-9.9; Frail: OR 3.4 95%CI 1.7-6.6), but less likely to report SFA (Robust OR .3, 95%CI .2-.5; Pre-frail OR .2, 95%CI .1-.3; Frail OR .2 95%CI .1-.3). Pre-frail and frail females reported fewer domains as worse (Pre-frail coefficient -0.21 SE 0.09, Frail -0.43 SE 0.14). As frailty worsened, males reported more domains as worse (Pre-frail 0.24 SE 0.07, Frail 0.29 SE 0.08). Self-reported sexual functioning differs by sex at all levels of frailty, and reporting by males, but not females, changes with frailty. Providers should be aware that sexual functioning is of importance to both sexes despite varying degrees of frailty.

Effects of adults on survival and recruitment of Peromyscus leucopus

1987 ◽  
Vol 65 (10) ◽  
pp. 2519-2523
Author(s):  
Gregory H. Adler ◽  
Mark L. Wilson ◽  
Michael J. DeRosa
Keyword(s):  
Adult Female ◽  
Adult Male ◽  
Peromyscus Leucopus ◽  
Survival Rates ◽  
Adult Males ◽  
Control Grid ◽  
Young Males ◽  
Young Females ◽  
Breeding Seasons ◽  
And Control

A population of Peromyscus leucopus (white-footed mouse) in northeastern Massachusetts was manipulated for 3 years to determine the effects of adults on survival and recruitment. Two experimental grids were established, from which either all adult males or all adult females were removed continually. The effects of these two manipulations were compared with demography on a control grid. Manipulations had no apparent effect on breeding intensity of young, survival rates of adults, or residency rates of adults and young. Recruitment of adult males was higher on the adult male removal grid than on the control grid. Recruitment rates of adult males and of young males and young females were lower on the adult female removal grid than on the control grid. Survival rates of young males were higher on the adult female removal grid than on the control grid; this effect may have been due to either reduced adult female residency or adult male recruitment. All differences between experimental and control grids were noted only during breeding seasons. Adult males apparently limited recruitment of adult consexuals. The effects of manipulations on other measured parameters were inconclusive because of high immigration rates of adult males onto the adult male removal grid and reduced recruitment of adult males and decreased production of young on the adult female removal grid.

Child Development, the Human Group, and Survival

2004 ◽  
Author(s):  
David A. Hamburg ◽  
Beatrix A. Hamburg
Keyword(s):  
Social Life ◽  
Nonhuman Primates ◽  
Human Adaptation ◽  
Old World Monkeys ◽  
Adult Males ◽  
Rapid Progress ◽  
Same Sex ◽  
Natural Habitats ◽  
Continuous Contact ◽  
Males And Females

In the past several decades, the study of the behavior of nonhuman primates—monkeys and apes—has made rapid progress. We can learn from the dimly perceived past when our ancestors confronted the problems of survival without the sophisticated technological aids so inextricably linked to human adaptation in recent times. Our past is inaccessible to direct study. But by careful observation of our closest living relatives, monkeys and apes, we can begin to understand the nonhuman primate heritage from which our ancient ancestors took a long route over millions of years toward humanity. Nonhuman primates live in groups that are held together by strong and enduring bonds between individuals. These bonds may be reflected in a variety of ways: relationships between adult males and females, between adults of the same sex, between juveniles, and between adult males or females and their young. Altogether, in their natural habitats they have a rich social life. Compared with most other mammals, primates have fewer young at a time. Rather than litters, all Old World monkeys and apes have only one offspring at a time, and they give each one a great deal of attention. The young have longer periods of immaturity than other mammals, including prolonged nutritional dependence on the mother. A corollary of the prolonged physical immaturity and nutritional dependence of the primate infant is a longer and more intense mother- infant relationship and a longer period of tutelage and learning the customs and survival skills of the group. In all higher primates except humans, infants cling reflexively to their mothers from birth, and mother-infant contact is maintained virtually all of the time until the much older infant develops the ability to keep up with the mother on its own. Nursing occurs in many short bouts around the clock; in early infancy, it is initiated and terminated by the infant, an easy process, because the infant is always clinging to the mother’s body, anyway. This combination of clinging, carrying, continuous contact, and frequent nursing is characteristic of all higher nonhuman primates.

New or little-known Diamesinae (Diptera: Chironomidae) from Oriental China

Zootaxa ◽  
2019 ◽  
Vol 4571 (4) ◽  
pp. 544
Author(s):  
BINGJIAO SUN ◽  
XIAOLONG LIN ◽  
XINHUA WANG ◽  
EUGENYI A. MAKARCHENKO
Keyword(s):  
New Species ◽  
Adult Male ◽  
Morphological Description ◽  
Adult Males ◽  
Oriental Region ◽  
A New Species

Morphological description for adult male of a new species Diamesa qiangi sp. nov. and redescription for adult males of the little-known species Linevitshia prima Makarchenko and Sasayusurika nigatana (Tokunaga) of subfamily Diamesinae from the Oriental Region of China are given. 

Comparison of the morphology of the adult males of the rhizoecine, phenacoccine and pseudococcine mealybugs (Hemiptera: Sternorrhyncha: Coccoidea), with the recognition of the family Rhizoecidae Williams

Zootaxa ◽  
2012 ◽  
Vol 3291 (1) ◽  
pp. 1 ◽  
Author(s):  
CHRIS HODGSON
Keyword(s):  
Adult Male ◽  
Strong Support ◽  
Scale Insects ◽  
Adult Males ◽  
Phenacoccus Solenopsis ◽  
Maconellicoccus Hirsutus ◽  
The Past ◽  
Male Characters ◽  
The Family ◽  
Male Morphology

In the past, the morphology of adult males of Coccoidea has provided strong support for diagnosing the higher taxonstatus of scale insects (Coccoidea). In particular, studies on adult male morphology have produced some of the stron-gest evidence for considering the Putoidae and Eriococcidae (as then defined) as separate families from the Pseudo-coccidae. This paper uses adult male morphology to assess the relationships of the Pseudococcidae and the hypogaeicand myrmecophilous mealybugs. The latter most often are classified as a subfamily (Rhizoecinae) of the Pseudococ-cidae. In order to diagnose the latter taxa, the adult males of fifteen named species of hypogaeic rhizoecine mealybugs(Kissrhizoecus hungaricus Kozár & Konczné Benedicty, Rhizoecus cacticans (Hambleton), Rh. coffeae Laing, Rh.dianthi Green, Rh. falcifer Künckel d’Herculais, Rh. kazachstanus Matesova, Ripersiella cryphia (Williams), Ri.hibisci (Kawai & Takagi), Ri. kondonis (Kuwana), Ri. malschae (Williams), Ri. puhiensis (Hambleton), Capitisetellamigrans (Green) and Pseudorhizoecus proximus Green) plus two unidentified Ripersiella species are described. Inaddition, the adult males of a Xenococcus sp., three Eumyrmococcus spp. and two Neochavesia spp. are illustratedfrom previously published papers and the adult male of another Neochavesia sp. is described and illustrated. In orderto compare the diagnoses of the above taxa with that of adult males of Pseudococcidae (minus the Rhizoecinae), theadult males of two apterous pseudococcid mealybugs are described or redescribed: Asaphococcus agninus Cox andthe myrmecophilous Promyrmococcus dilli Williams, both belonging to the Pseudococcinae. In addition, threemacropterous Pseudococcidae, namely Phenacoccus solenopsis Tinsley (Phenacoccinae), Planococcus glaucus(Maskell) and Maconellicoccus hirsutus (Green) (Pseudococcinae) are also described and/or illustrated. Prior to thisstudy, the hypogaeic and myrmecophilous mealybugs generally were included in the subfamily Rhizoecinae of thePseudococcidae, with the hypogaeic mealybugs in tribe Rhizoecini and the myrmecophilous mealybugs in Xenococ-cini. Based on the present study and on phylogenetic data, it is concluded that the rhizoecine mealybugs form a sepa-rate family from the Pseudococcidae — Rhizoecidae Williams. This family is considered here to include twosubfamilies, Rhizoecinae Williams and Xenococcinae Tang. Based on adult male characters, there is little support forthe present generic divisions of the Rhizoecinae. Keys are given for separating the adult males of Rhizoecidae from those of Pseudococcidae, and for separating the known adult males within each subfamily.

Effects of age and photoperiod on reproduction and the spleen in the marsh rice rat (Oryzomys palustris)

2001 ◽  
Vol 280 (4) ◽  
pp. R1249-R1255 ◽  
Author(s):  
Kent E. Edmonds ◽  
Milton H. Stetson
Keyword(s):  
Adult Male ◽  
Reproductive Organ ◽  
Spleen Weight ◽  
Adult Males ◽  
Young Females ◽  
Reproductive Response ◽  
Body Weights ◽  
Marsh Rice Rat ◽  
Oryzomys Palustris ◽  
Older Males

To examine the interactions between age and photoperiod on reproduction and spleen weights, we exposed adult male and female rice rats of various ages to photoperiods of 16:8-h light-dark photoperiods (16L:8D) or 12L:12D. After 10 wk, animals were killed and the following data were recorded: weights of testes, seminal vesicles, uterus, ovaries, body, and spleen and, in addition, vaginal patency. Young adult males displayed a greater degree of testicular and seminal vesicle regression in short photoperiods than did older males; the testes of most older males did not regress in response to short photoperiods. Spleen weight was unresponsive to short photoperiods in all males, but was affected by age. Females, however, exhibited reproductive organ regression and decreased vaginal patency in response to short photoperiods at all ages examined. Body weights were affected by photoperiod in young females, and, as in males, photoperiod had no effect on spleen weights. These data suggest that the reproductive response to photoperiod in adult male rice rats declines with age, whereas in adult females it does not.

ADRENAL WEIGHT IN WILD MALLARD AND DOMESTIC DUCKS AND SEASONAL ADRENAL WEIGHT CHANGES IN THE MALLARD

1965 ◽  
Vol 43 (3) ◽  
pp. 475-487 ◽  
Author(s):  
E. O. Höhn ◽  
A. K. Sarkar ◽  
A. Dzubin
Keyword(s):  
Sex Differences ◽  
Breeding Season ◽  
Adult Female ◽  
Adult Male ◽  
Adrenal Weight ◽  
Adult Males ◽  
Weight Changes ◽  
Domestic Ducks ◽  
Testicular Weight ◽  
Wild Mallard

Mallards and domestic ducks are conspecific. Relative adrenal weight is similar in newly hatched mallards and domestic ducks. Immature mallards have higher relative adrenal weights than domestic ducks of similar age. Adult female mallards also have higher relative adrenal weights and a higher proportion of cortex in the adrenal than adult female domestic ducks, but adult males of the two strains fail to show these differences.Adrenal weight is related to testicular weight in mallards and domestic ducks, but no correlation is evident between adrenal weight and weight of the ovary and oviduct in mallards. Mallards show no adrenal weight sex differences at any of the three ages sampled. A seasonal adrenal weight cycle is apparent in both sexes of the mallard with a weight increase related to the breeding season and another increase during the autumn and winter.The higher relative adrenal weights of (immature and adult female) mallards compared to those of domestic ducks are attributed to the mallards' greater exposure to stress. It is suggested that this effect operates also in adult male mallards but is obscured in the comparison with adult male domestic ducks because in the latter, which have much higher testicular weights, another factor responsible for the correlation between adrenal and testicular weight as noted above makes for increased adrenal weights.

Reason behind Drinking: A Cross-sectional Study on Alcohol Use among Adult Males in Bareilly District, Uttar Pradesh, India

2017 ◽  
Vol 2 (1) ◽  
pp. 29-31
Author(s):  
Himalaya Singh
Keyword(s):  
Alcohol Use ◽  
Sample Size ◽  
Social Life ◽  
Uttar Pradesh ◽  
Peer Pressure ◽  
Cross Sectional Study ◽  
Alcoholic Beverages ◽  
Adult Males ◽  
Sectional Study ◽  
Cross Sectional

ABSTRACT Introduction Alcoholic beverages have been a part of social life for millennia, yet societies have always found it difficult to understand or restrain their use. Different societies not only have different sets of beliefs and rules about drinking, but they also show very different outcomes when people consume alcohol. Aims and objectives This study is conducted to assess the reasons behind consuming alcohol among adult males of Bareilly district, Uttar Pradesh, India. Materials and methods A community-based cross-sectional study was carried out on males aged ≥15 years in Bareilly district. Thirty clusters were chosen from this population by probability proportional to size sampling, and then from these clusters, in each cluster, houses were taken out and from each, one adult male was selected till the sample size was achieved. The prevalence of alcohol usage among males in Uttar Pradesh (by National Family Health Survey 372) is 25.3%. Taking 10% of nonresponsive rate and design effect of 2, calculated sample size is 632. Results Totally 699 adult males participated in the study and analyzed data show that 31% males are current drinkers, 5% are past drinkers, and rest are teetotalers. Most of the study subjects indulged in this habit due to peer pressure (58.7%), while 24.9% reported that the cause was a curiosity to drink. Only 7.0% were because of conforming to social status or norms. The majority of the study subjects continued to drink in order to cheer-up (44.6%) in order to relax (40.8%), whereas only 16% current drinkers reported the cause as “peer pressure” or “think and work better.” Conclusion We can conclude that the most common reason to start alcohol habit is peer pressure and people continue it to cheer themselves. How to cite this article Singh H, Joshi HS, Singh A, Katyal R, Upadhyay D. Reason behind Drinking: A Cross-sectional Study on Alcohol Use among Adult Males in Bareilly District, Uttar Pradesh, India. Int J Adv Integ Med Sci 2017;2(1):29-31.

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