Data from: Female reproductive aging in seven primate species: patterns and consequences

2021 ◽  
Author(s):  
Susan Alberts ◽  
Jeanne Altmann ◽  
Anne Bronikowski ◽  
Fernando Campos ◽  
Marina Cords ◽  
...  
Keyword(s):  
Primate Species ◽  
Reproductive Aging

Discrete versus continuous quantities in non-primate species: The case of fish

2013 ◽  
Author(s):  
Christian Agrillo ◽  
Maria Elena Miletto Petrazzini ◽  
Christian Tagliapietra ◽  
Angelo Bisazza
Keyword(s):  
Primate Species ◽  
Continuous Quantities

Menstrual Changes Mark Reproductive Aging

2012 ◽  
Vol 42 (4) ◽  
pp. 4
Author(s):  
JENNIE SMITH
Keyword(s):  
Reproductive Aging

scholarly journals Kisspeptin level in the aging ovary is regulated by the sympathetic nervous system

2017 ◽  
Vol 232 (1) ◽  
pp. 97-105 ◽  
Author(s):  
Daniela Fernandois ◽  
Gonzalo Cruz ◽  
Eun Kyung Na ◽  
Hernán E Lara ◽  
Alfonso H Paredes
Keyword(s):  
Adrenergic Receptor ◽  
Follicular Development ◽  
Sympathetic Nerves ◽  
Female Rats ◽  
Reproductive Aging ◽  
Beta Adrenergic Receptor ◽  
Beta Adrenergic ◽  
Primordial Follicles ◽  
Follicular Cyst

Previous work has demonstrated that the increase in the activity of sympathetic nerves, which occurs during the subfertility period in female rats, causes an increase in follicular cyst development and impairs follicular development. In addition, the increase in ovarian sympathetic activity of aged rats correlates with an increased expression of kisspeptin (KISS1) in the ovary. This increase in KISS1 could participate in the decrease in follicular development that occurs during the subfertility period. We aimed to determine whether the blockade of ovarian sympathetic tone prevents the increase in KISS1 expression during reproductive aging and improves follicular development. We performed 2 experiments in rats: (1) an in vivo blockade of beta-adrenergic receptor with propranolol (5.0 mg/kg) and (2) an ovarian surgical denervation to modulate the sympathetic system at these ages. We measured Kisspeptin and follicle-stimulating hormone receptor (FSHR) mRNA and protein levels by qRT-PCR and western blot and counted primordial, primary and secondary follicles at 8, 10 and 12 months of age. The results showed that ovarian KISS1 decreased but FSHR increased after both propranolol administration and the surgical denervation in rats of 8, 10 and 12 months of age. An increase in FSHR was related to an increase in the number of smaller secondary follicles and a decreased number of primordial follicles at 8, 10 and 12 months of age. These results suggest that intraovarian KISS1 is regulated by sympathetic nerves via a beta-adrenergic receptor and participates locally in ovarian follicular development in reproductive aging.

scholarly journals Hope for the survival of the Critically Endangered white-naped mangabey Cercocebus atys lunulatus: a new primate species for Burkina Faso

Oryx ◽  
2006 ◽  
Vol 40 (3) ◽  
pp. 355-357 ◽  
Author(s):  
Gérard Galat ◽  
Anh Galat-Luong
Keyword(s):  
Burkina Faso ◽  
Cote D'ivoire ◽  
Côte D’Ivoire ◽  
Primate Species ◽  
Sooty Mangabey ◽  
Cote D’Ivoire ◽  
Côte D'ivoire ◽  
The Status ◽  
Cercocebus Atys ◽  
Wildlife Reserve

From 2003 to 2005 we carried out surveys in Burkina Faso to investigate the status of primate taxa. In the south-west near the border with Côte d'Ivoire we discovered sooty mangabey Cercocebus atys, a primate species that had not been previously reported in the country. This population is the subspecies C. a. lunulatus, the white-naped mangabey, one of the 25 most threatened primate taxa. As the subspecies occurs in a gallery forest that is next to a wildlife safari hunting area, we recommend that hunting is prohibited near these forests. The recent creation of the Warigué protected area, linking the Comoé-Léraba Reserved Forest and Partial Wildlife Reserve in Burkina Faso where we observed the subspecies, with the Comoé National Park in Côte d'Ivoire, could make an important contribution to the survival of this, the northernmost population, of the subspecies.

scholarly journals A Farewell to the Encephalization Quotient: A New Brain Size Measure for Comparative Primate Cognition

2021 ◽  
pp. 1-12
Author(s):  
Carel P. van Schaik ◽  
Zegni Triki ◽  
Redouan Bshary ◽  
Sandra A. Heldstab
Keyword(s):  
Body Size ◽  
Cognitive Abilities ◽  
Brain Size ◽  
Estimation Error ◽  
Primate Species ◽  
Mammal Species ◽  
Mean Values ◽  
Encephalization Quotient ◽  
Body Sizes ◽  
Size Measure

Both absolute and relative brain sizes vary greatly among and within the major vertebrate lineages. Scientists have long debated how larger brains in primates and hominins translate into greater cognitive performance, and in particular how to control for the relationship between the noncognitive functions of the brain and body size. One solution to this problem is to establish the slope of cognitive equivalence, i.e., the line connecting organisms with an identical bauplan but different body sizes. The original approach to estimate this slope through intraspecific regressions was abandoned after it became clear that it generated slopes that were too low by an unknown margin due to estimation error. Here, we revisit this method. We control for the error problem by focusing on highly dimorphic primate species with large sample sizes and fitting a line through the mean values for adult females and males. We obtain the best estimate for the slope of circa 0.27, a value much lower than those constructed using all mammal species and close to the value expected based on the genetic correlation between brain size and body size. We also find that the estimate of cognitive brain size based on cognitive equivalence fits empirical cognitive studies better than the encephalization quotient, which should therefore be avoided in future studies on primates and presumably mammals and birds in general. The use of residuals from the line of cognitive equivalence may change conclusions concerning the cognitive abilities of extant and extinct primate species, including hominins.

scholarly journals Diffusion MRI data, sulcal anatomy, and tractography for eight species from the Primate Brain Bank

2021 ◽  
Author(s):  
Katherine L. Bryant ◽  
Dirk Jan Ardesch ◽  
Lea Roumazeilles ◽  
Lianne H. Scholtens ◽  
Alexandre A. Khrapitchev ◽  
...  
Keyword(s):  
Diffusion Mri ◽  
Large Scale ◽  
Structural Mri ◽  
Relative Volume ◽  
Primate Species ◽  
Brain Bank ◽  
Cingulum Bundle ◽  
Primate Brain ◽  
Multiple Levels ◽  
Comparative Neuroscience

AbstractLarge-scale comparative neuroscience requires data from many species and, ideally, at multiple levels of description. Here, we contribute to this endeavor by presenting diffusion and structural MRI data from eight primate species that have not or rarely been described in the literature. The selected samples from the Primate Brain Bank cover a prosimian, New and Old World monkeys, and a great ape. We present preliminary labelling of the cortical sulci and tractography of the optic radiation, dorsal part of the cingulum bundle, and dorsal parietal–frontal and ventral temporal-frontal longitudinal white matter tracts. Both dorsal and ventral association fiber systems could be observed in all samples, with the dorsal tracts occupying much less relative volume in the prosimian than in other species. We discuss the results in the context of known primate specializations and present hypotheses for further research. All data and results presented here are available online as a resource for the scientific community.

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