Postpartum repeated separation from pups affects the behavior and neuroendocrine parameters of mandarin vole fathers

2015 ◽  
Vol 139 ◽  
pp. 89-96 ◽  
Author(s):  
Lingzhe Kong ◽  
Ruiyong Wu ◽  
Lu Wang ◽  
Weige Feng ◽  
Yan Cao ◽  
...  
Keyword(s):  
Mandarin Vole

Does low fecundity reflect kin recognition and inbreeding avoidance in the mandarin vole (Microtus mandarinus)?

2002 ◽  
Vol 80 (12) ◽  
pp. 2150-2155 ◽  
Author(s):  
Tai Fadao ◽  
Sun Ruyong ◽  
Wang Tingzheng
Keyword(s):  
Genetic Relatedness ◽  
Kin Recognition ◽  
Inbreeding Avoidance ◽  
The Other ◽  
Phenotype Matching ◽  
Significant Difference ◽  
Rearing Conditions ◽  
Vaginal Cytology ◽  
Cross Fostering ◽  
Mandarin Vole

The effects of kin recognition on estrus and breeding in mandarin voles (Microtus mandarinus) were investigated in the laboratory using a cross-fostering method. Nonsiblings reared apart produced significantly more litters than siblings or nonsiblings reared together. These results may support the hypothesis that familiarity through association before weaning plays an important role in kin recognition. On the other hand, nonsiblings reared apart produced significantly more litters than siblings reared apart. Furthermore, there was no significant difference in number of litters between siblings reared apart and siblings reared together. These observations show that phenotype-matching mechanisms of kin recognition may operate in conjunction with familiarity in kin recognition in this species. Through observing the vaginal cytology of female mandarin voles paired with different males in different rearing conditions, it was found that females paired with familiar males (through association before weaning) produced significantly fewer estrous smears than females paired with unfamiliar males (reared by different parents before weaning), regardless of genetic relatedness. Thus, using vaginal cytology as an indicator of estrus, it was found that familiarity through association before weaning may retard the first estrus of female mandarin voles.

scholarly journals Increased anxiety and decreased sociability in adulthood following paternal deprivation involve oxytocin in the mPFC

2017 ◽  
Author(s):  
Zhixiong He ◽  
Limin Wang ◽  
luo Luo ◽  
Rui Jia ◽  
Wei Yuan ◽  
...  
Keyword(s):  
Social Preference ◽  
Social Preferences ◽  
Receptor Protein ◽  
Prelimbic Cortex ◽  
Adult Males ◽  
V1a Receptor ◽  
Important Target ◽  
Adverse Experiences ◽  
Males And Females ◽  
Mandarin Vole

AbstractEarly adverse experiences often have devastating consequences on adult emotional and social behavior. However, whether paternal deprivation (PD) during the pre-weaning period affects brain and behavioral development remains unexplored in socially mandarin vole (Microtus mandarinus). We found that PD increased anxiety-like behavior and attenuated social preference in adult males and females; decreased prelimbic cortex OT-immunoreactive fibers and paraventricular nucleus OT positive neurons; reduced levels of medial prefrontal cortex (mPFC) OT receptor protein in females and OT receptor and V1a receptor protein in males. Intra-prelimbic cortical OT injections reversed anxiety-like behavior and social preferences affected by PD, whereas injections of OT and OT receptor antagonist blocked this reversal. These findings demonstrate that PD leads to increased anxiety-like behavior and attenuated social preferences with involvement of the mPFC OT system. The prelimbic cortex OT system may be an important target for the treatment of disorders related to early adverse experiences.

scholarly journals Complex Structure of Lasiopodomys mandarinus vinogradovi Sex Chromosomes, Sex Determination, and Intraspecific Autosomal Polymorphism

Genes ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 374 ◽  
Author(s):  
Svetlana A. Romanenko ◽  
Antonina V. Smorkatcheva ◽  
Yulia M. Kovalskaya ◽  
Dmitry Yu. Prokopov ◽  
Natalya A. Lemskaya ◽  
...  
Keyword(s):  
Sex Determination ◽  
Sex Chromosomes ◽  
Sex Chromosome ◽  
De Novo ◽  
Complex Structure ◽  
X Chromosomes ◽  
Single Chromosome ◽  
Determination System ◽  
Sex Determination System ◽  
Mandarin Vole

The mandarin vole, Lasiopodomys mandarinus, is one of the most intriguing species among mammals with non-XX/XY sex chromosome system. It combines polymorphism in diploid chromosome numbers, variation in the morphology of autosomes, heteromorphism of X chromosomes, and several sex chromosome systems the origin of which remains unexplained. Here we elucidate the sex determination system in Lasiopodomys mandarinus vinogradovi using extensive karyotyping, crossbreeding experiments, molecular cytogenetic methods, and single chromosome DNA sequencing. Among 205 karyotyped voles, one male and three female combinations of sex chromosomes were revealed. The chromosome segregation pattern and karyomorph-related reproductive performances suggested an aberrant sex determination with almost half of the females carrying neo-X/neo-Y combination. The comparative chromosome painting strongly supported this proposition and revealed the mandarin vole sex chromosome systems originated due to at least two de novo autosomal translocations onto the ancestral X chromosome. The polymorphism in autosome 2 was not related to sex chromosome variability and was proved to result from pericentric inversions. Sequencing of microdissection derived of sex chromosomes allowed the determination of the coordinates for syntenic regions but did not reveal any Y-specific sequences. Several possible sex determination mechanisms as well as interpopulation karyological differences are discussed.

Daily activity of the mandarin vole (Lasiopodomys mandarinus) under laboratory conditions

2008 ◽  
Vol 418 (1) ◽  
pp. 47-49
Author(s):  
T. Yu. Chistova ◽  
A. D. Mironov ◽  
O. O. Butkevich ◽  
O. M. Golubeva ◽  
G. K. Zharova
Keyword(s):  
Daily Activity ◽  
Laboratory Conditions ◽  
Mandarin Vole

scholarly journals Evolution of Hemoglobin Genes in a Subterranean Rodent Species (Lasiopodomys mandarinus)

Biology ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 106
Author(s):  
Hong Sun ◽  
Kaihong Ye ◽  
Denghui Liu ◽  
Dan Pan ◽  
Shiming Gu ◽  
...  
Keyword(s):  
Globin Gene ◽  
Species Selection ◽  
Rodent Species ◽  
Hypoxia Tolerance ◽  
Functional Genes ◽  
Oxygen Binding ◽  
Globin Genes ◽  
Subterranean Rodent ◽  
Brandt’S Vole ◽  
Mandarin Vole

The Mandarin vole (Lasiopodomys mandarinus), a typical subterranean rodent, has undergone hematological adaptations to tolerate the hypoxic/hypercapnic underground environment. Hemoglobin (Hb) genes encode respiratory proteins functioning principally in oxygen binding and transport to various tissues and organs. To investigate the evolution of α- and β-hemoglobin (Hb) in subterranean rodent species, we sequenced Hb genes of the Mandarin vole and the related aboveground Brandt’s vole (L. brandtii). Sequencing showed that in both voles, α-globin was encoded by a cluster of five functional genes in the following linkage order: HBZ, HBA-T1, HBQ-T1, HBA-T2, and HBQ-T2; among these, HBQ-T2 is a pseudogene in both voles. The β-globin gene cluster in both voles also included five functional genes in the following linkage order: HBE, HBE/HBG, HBG, HBB-T1, and HBB-T2. Phylogenetic analysis revealed that the Mandarin vole underwent convergent evolution with its related aboveground species (Brandt’s vole) but not with other subterranean rodent species. Selection pressure analyses revealed that α- and β-globin genes are under strong purifying selection (ω < 1), and branch-site analyses identified positive selection sites on HBAT-T1 and HBB-T1 in different subterranean rodent species. This suggests that the adaptive evolution of these genes enhanced the ability of Hb to store and transport oxygen in subterranean rodent species. Our findings highlight the critical roles of Hb genes in the evolution of hypoxia tolerance in subterranean rodent species.

The effects of repeated early deprivation on ultrasonic vocalizations and ontogenetic development in mandarin vole pups

2011 ◽  
Vol 88 (3) ◽  
pp. 162-167 ◽  
Author(s):  
Peng Yu ◽  
Jianli Wang ◽  
Fadao Tai ◽  
Hugh Broders ◽  
Shucheng An ◽  
...  
Keyword(s):  
Ultrasonic Vocalizations ◽  
Ontogenetic Development ◽  
Early Deprivation ◽  
Mandarin Vole
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