The Costs of Reproductive Success in Male Rhesus Macaques (Macaca mulatta) on Cayo Santiago

2014 ◽  
Vol 35 (3-4) ◽  
pp. 661-676 ◽  
Author(s):  
James P. Higham ◽  
Dario Maestripieri
Keyword(s):  
Reproductive Success ◽  
Macaca Mulatta ◽  
Rhesus Macaques ◽  
Cayo Santiago ◽  
Male Rhesus

The effect of biologically active supplements on blood hematological parameters of male rhesus macaques

2020 ◽  
Author(s):  
Н.В. Гапонов ◽  
Г.Л. Яговенко ◽  
А.Н. Степанова
Keyword(s):  
Macaca Mulatta ◽  
Rhesus Macaques ◽  
Hematological Parameters ◽  
Biologically Active ◽  
Model Organisms ◽  
Blood Morphology ◽  
Platelet Concentration ◽  
Deuterium Depleted Water ◽  
In The Beginning ◽  
Male Rhesus

Как показали многочисленные исследования, морфологический состав крови зависит от многих факторов, в частности таких, как условия кормления и содержания, возраст подопытных объектов. Однако отсутствуют данные о влиянии биологически активных добавок, таких как хлорелла, «Бактистатин», вода со сниженной концентрацией дейтерия, на гематологические показатели. Приматы обладают высоким анатомо-физиологическим сходством с человеком, поэтому являются незаменимой моделью для воспроизведения различных патологических и токсических состояний человека. Приматы вида макака-резус (Macaca mulatta) являются наиболее удобными и востребованными в работе, широко используются в медико-биологических исследованиях. Для корректной оценки воздействия биологически активных добавок (БАД) на организмы приматов необходимы достоверные сведения о функционировании их кроветворной системы. По результатам нашего исследования в начале опыта количество эритроцитов в крови самцов макак-резусов во всех исследуемых группах было незначительно увеличено относительно физиологической нормы (5–6,2 млн в 1 мм3). Эта закономерность может быть связана со значительным увеличением температуры окружающей среды к моменту начала постановки опыта и не связано с влиянием БАД. Подобная закономерность наблюдалась и по остальным показателям. Так, уровень тромбоцитов в начале эксперимента находился в пределах референтных показателей — от 200 до 400 млрд/л, за исключением самцов 2-й опытной группы. В этой группе наблюдалось незначительное увеличение тромбоцитов — на 17,60 млрд/л, или на 4,40% от максимально допустимых значений референтных показателей. Результаты анализов крови в конце эксперимента показали, что у всех самцов макак-резусов в опытных группах в результате применения БАД количество тромбоцитов приблизилось к физиологической норме. На основании чего можно сделать вывод, что применение суспензии хлореллы, сухой хлореллы, «Бактистатина» и воды с пониженным содержанием дейтерия не приводило к критическому отклонению морфологических показателей крови, что, в свою очередь, даёт возможность применять БАД в рационах кормления обезьян. Blood morphology depends on many factors, particularly feeding, welfare and age of animals. The influence of biologically active supplements (BAS) such as chlorella, “Baktistatin”, and deuterium-depleted water on blood hematological parameters remains open to question. Primates are quite similar to humans in anatomy and physiology and hence are perfect model organisms when testing various pathological and toxic processes. Macaca mulatta is commonly used in research. To analyze the effect of BAS on primate organism the blood test is required. In the beginning of the experiment the concentration of red blood cells (RBC) exceeded slightly physiologically normal state in all the groups (5–6.2 million/mm3). This could possibly be a result of hot conditions. Same was true for other parameters. Platelet concentration was normal and varied within 200–400 billion/l in the beginning, except for the males of the second group. The second group showed insignificant increase in platelet concentration — by 17.60 billion/l, or 4.40%. Feeding male rhesus macaques with BAS optimized platelet concentration. Chlorella suspension, dry chlorella, “Baktistatin”, and deuterium-depleted water had no critical influence on blood morphology and, therefore, could be used in primate diet.

scholarly journals Social Interactions Between Rhesus Macaques (Macaca mulatta) and Assamese Macaques (M. assamensis) in Nepal: Why Do Male Rhesus Macaques Follow Social Groups of Assamese Macaques?

2019 ◽  
Vol 35 (1) ◽  
pp. 45-51 ◽  
Author(s):  
Hideshi OGAWA ◽  
Pavan K. PAUDEL ◽  
Sabina KOIRALA ◽  
Sunil KHATIWADA ◽  
Mukesh K. CHALISE
Keyword(s):  
Social Interactions ◽  
Macaca Mulatta ◽  
Rhesus Macaques ◽  
Social Groups ◽  
Assamese Macaques ◽  
Male Rhesus

scholarly journals Age negatively impacts reproduction in high-ranking male rhesus macaques on Cayo Santiago, Puerto Rico

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Krista M. Milich ◽  
Angelina Ruiz-Lambides ◽  
Elizabeth Maldonado ◽  
Dario Maestripieri
Keyword(s):  
Puerto Rico ◽  
Rhesus Macaques ◽  
Cayo Santiago ◽  
High Ranking ◽  
Male Rhesus ◽  
High Ranking Male

scholarly journals Oxytocin and pair compatibility in adult male rhesus macaques ( Macaca mulatta )

2019 ◽  
Author(s):  
Melissa R. Berg ◽  
Allison Heagerty ◽  
Kristine Coleman
Keyword(s):  
Adult Male ◽  
Macaca Mulatta ◽  
Rhesus Macaques ◽  
Pair Compatibility ◽  
Male Rhesus

Male Dominance and Reproductive Success in a Captive Group of Rhesus Macaques (Macaca Mulatta)

Behaviour ◽  
1994 ◽  
Vol 129 (3-4) ◽  
pp. 225-242 ◽  
Author(s):  
David Glenn Smith
Keyword(s):  
Reproductive Success ◽  
Macaca Mulatta ◽  
Dominance Hierarchy ◽  
Rhesus Macaques ◽  
Dominance Rank ◽  
Male Dominance ◽  
Strongly Correlated ◽  
Young Males ◽  
Captive Group ◽  
Lower Ranking

AbstractPaternity exclusion analysis was employed to estimate the reproductive success (RS) of 32 males who experienced at least one breeding season over the age of four years between 1977 and 1991 in a captive group of rhesus macaques (Macaca mulatta). Although three different males held alpha rank during the period, the male dominance hierarchy remained relatively stable even when the number of males was high. Average dominance rank and overall RS of males while in the group were strongly correlated. However, during most years the correlation between male dominance rank and RS was not statistically significant because males who achieved high rank 1)were those who experienced relatively high RS as lower ranking subadults and 2) maintained high dominance rank after experiencing a sustained decline in RS. Correlations between male dominance rank and RS were highest when the number of subadult males entering the dominance hierarchy was increasing and one or a very few males were least effective in monopolizing females. These results are not consistent with expectations based solely on the priority of access model of intrasexual selection. Female choice, as exemplified by the preference of females for mating with young males that are rising in rank, might also influence the evolution of social dominance in rhesus macaques.

Alternative Reproductive Tactics and Reproductive Success in Male Rhesus Macaques

Behaviour ◽  
1994 ◽  
Vol 129 (3-4) ◽  
pp. 177-201 ◽  
Author(s):  
Peter Nurnberg ◽  
John D. Berard ◽  
Jorg T. Epplen ◽  
Jorg Schmidtke
Keyword(s):  
Reproductive Success ◽  
Rhesus Macaques ◽  
Alternative Reproductive Tactics ◽  
Alternative Tactics ◽  
Reproductive Tactics ◽  
High Ranking ◽  
One Year ◽  
Reproductive Tactic ◽  
Male Rhesus

AbstractMale rhesus macaques on Cayo Santiago use rank-dependent alternative reproductive tactics. High-ranking males can form long-term consorts and guard female mates while low-ranking males frequently resort to quick copulations under the cover of vegetation. No single reproductive tactic provided the Group S males with a definitive reproductive advantage during the one-year study. Males using the long-term tactic and the quick, stealth tactic sired five offspring each, but fewer males used the long-term consort tactic. Males using the long-term reproductive tactic have significantly greater mating success than males using the quick, sneaky tactic, and may have greater reproductive success. The highest-ranking males who form long-term consorts had the greatest degree of reproductive success. This indicates that for the highest-ranking males, forming long-term consorts is the most effective reproductive tactic. The effectiveness of alternative tactics for high-ranking males (i.e. consort disruption and possessive following) was equivocal. Consort disruption had no immediate effect on reproductive success. Possessive following may have resulted in the siring of two offspring by the alpha male, but was ineffective in other cases, where the females were inseminated by subordinate males. The effectiveness of the quick, furtive tactic was demonstrated by the siring of 45% of the infants by males who used this tactic.

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