A field test of the Bruce effect in the monogamous prairie vole (Microtus ochrogaster)

  title={A field test of the Bruce effect in the monogamous prairie vole (Microtus ochrogaster)},
  author={S. Mahady and Jerry O. Wolff},
  journal={Behavioral Ecology and Sociobiology},
Abstract. The Bruce effect is a widely studied reproductive phenomenon in rodents in which exposure of pregnant females to unknown males causes termination of the current pregnancy. The Bruce effect has been reported from numerous studies in the laboratory, and one field study with the promiscuous gray-tailed vole, Microtus canicaudus, failed to support it. We conducted a field study with the monogamous prairie vole, M. ochrogaster, to determine if complete replacement of the male population… 

Mating strategy predicts the occurrence of the Bruce effect in the vlei rat Otomys irroratus

The Bruce effect may be an adaptive response to infanticide risk in polygynous populations, although studies of free-living populations would be important to confirm the findings.

A Bruce Effect in Wild Geladas

A strong Bruce effect is reported in a wild primate, the gelada (Theropithecus gelada), where female geladas terminate 80% of pregnancies in the weeks after a dominant male is replaced, and data on interbirth intervals suggest that pregnancy termination offers fitness benefits for females whose offspring would otherwise be susceptible to infanticide.

Morphological, Genetic, and Behavioral Comparisons of Two Prairie Vole Populations in the Field and Laboratory

Assessment of morphological, behavioral, or genetic differences between 2 populations of the prairie vole suggests that those from Kansas are atypical of prairie voles overall, and the degree to which the previously described population differences are ecologically meaningful is questioned.

The Bruce effect revisited: is pregnancy termination in female rodents an adaptation to ensure breeding success after male turnover in low densities?

It is shown that overwintered and primiparous females, the most abundant cohort during population lows in the increase phase of cyclic rodent populations, were more likely to delay births after turnover of the male than year-born and multiparous Female.

Asynchronous breeding in the socially monogamous prairie vole

It is concluded that rodents in general are not good models for breeding synchrony and that females use alternative mating tactics to avoid predator avoidance and promote monogamy when paternal care is important for offspring survival.

Are body mass and parasite load related to social partnerships and mating in Microtus ochrogaster?

There was no association between the level of endoparasites found among males in either Indiana or Kansas and the strength of a male's social bond to a female, and no relationship was found between body mass and indicators of social monogamy in either population.

The Disturbance of Resident Populations of Field Voles (Microtus agrestis) by Immigrants

It is concluded that the role of social interactions should not be underestimated when releasing unfamiliar individuals into small populations, and that males compete with males for access to mates while females compete with females and/or males for limited resources.

Spontaneous abortion as a response to reproductive conflict in the banded mongoose

The results suggest that abortion may be a means by which disadvantaged females conserve resources for future breeding attempts in more benign conditions, and highlight that female reproductive competition may be resolved long before the production of offspring.



The mating system of the prairie vole, Microtus ochrogaster: Field and laboratory evidence for pair-bonding

Field and experimental evidence is provided for the existence of pair-bonding or monogamy in prairie voles (Microtus ochrogaster), and females in postpartum estrus preferentially showed high levels of sexual receptivity and low levels of aggression toward familiar males and were less likely to mate with unfamiliar sexually experienced males.

Evidence of pregnancy failure in the wild meadow vole, Microtus pennsylvanicus.

It seems reasonable to hypothesize that pregnancy failure is one of the density-dependent factors that decreases reproductivity in populations with a higher density.

Parental care and mating system of the prairie vole, Microtus ochrogaster

The mating system of prairie voles was investigated by experimentally manipulating the sexual composition of vole societies, thereby providing each vole with a variety of mating choices, and it is concluded that M. ochrogaster is basically monogamous.

The effects of mate removal on pregnancy success in prairie voles (Microtus ochrogaster) and meadow voles (Microtus pennsylvanicus).

Although removal of the stud male influenced litter production, the direction of the effect varied with species, and Removal of the male soon after mating in postpartum estrus decreased pregnancy success in prairie voles and increased success in meadow voles.

The effect of males on the reproductive state of female Microtus ochrogaster.

Changes in vaginal epithelia were the most sensitive assay of female responsiveness to males or to estrogen injections.

Patterns of Visitation in Prairie Voles (Microtus Ochrogaster) Reveal a Role for Males in Population Regulation

It is suggested that adult males play a role in setting breeding density in natural populations of prairie voles and influence the reproductive condition of their daughters.

Pregnancy interruption in Microtus ochrogaster: laboratory artifact or field phenomenon?

The data indicate that pregnancy interruption can occur in situations where 1) the female can potentially avoid the strange male, 2) theFemale can repel the strangemale via aggressive behavior, or 3) the stud male is present to defend his mate.

Home Range Overlap and Nest Cohabitation of Male and Female Prairie Voles

The results of this study support laboratory evidence and live-trapping data suggesting pair-bonding in M. ochrogaster and contrast markedly with field studies of M. pennsylvanicus and M. montanus which have revealed no nest cohabitation by adult males and females.