Lactation and care for unrelated infants in forest‐living ringtailed Lemurs

  title={Lactation and care for unrelated infants in forest‐living ringtailed Lemurs},
  author={Michael E. Pereira and Michel Izard},
  journal={American Journal of Primatology},
An adult female ringtailed lemur (Lemur catta) known not to have been pregnant showed spontaneous lactation in response to twin infants born to an unrelated female. The females had met only 7 months earlier, when they and two other unrelated adult females were released from separate locations in a forest enclosure to form a new social group. Three months after release, an adult male from an adjacent enclosure gained access to the new group for 1 day, the day of one female's estrus. No males had… 

Infant care, infanticide, and female reproductive strategies in polygynous groups of common marmosets (Callithrix jacchus)

  • L. Digby
  • Biology
    Behavioral Ecology and Sociobiology
  • 2004
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Female mate choice, male migration, and the threat of infanticide in ringtailed lemurs

Paternity determination by DNA fingerprinting is reported for a long-term study group of semi-free-ranging ringtailed lemurs, predicting that, by killing others' infants, males simultaneously increase chances for success in females' next reproductive efforts and terminate current fathers' reproductive eligibility in a group.

Male life history and intergroup mobility among ringtailed lemurs (Lemur catta)

  • R. Sussman
  • Biology
    International Journal of Primatology
  • 2006
The age-related pattern of male migration and the occurrence of extragroup mating in Lemur catta is similar to that described for several species of macaques.

Infant carrying in a polygynous group of common marmosets (Callithrix jacchus)

The results indicate that the greater energetic demands in rearing three infants simultaneously are compensated by an extended division of labor among group members.

A ten-year summary of reproductive parameters for ring-tailed lemurs at berenty, madagascar

From 1989 to 1998, 204 live births were recorded for ring-tailed lemurs at Berenty, Madagascar; the peak month of birth was September, with 82.0% (146/178) occurring during this period, and the offspring sex ratio was not significantly different from 1∶1, and there was no association with the mother's age.

Group histories and offspring sex ratios in ringtailed lemurs (Lemur catta)

It is suggested that LRC interacts with LRE to explain offspring sex ratios in ringtailed lemurs, and data provide support for LRE: females overproduce daughters given prospects of new group formation, either through group fission or threatened expulsion of young mothers.

Ontogeny of Feeding Behavior of Eulemur fulvus in the Dry Forest of Mayotte

  • L. Tarnaud
  • Environmental Science
    International Journal of Primatology
  • 2004
There is a correlation between the availability of particular food resources with high nutritional quality and timing of reproduction and infant maturation and the progressive overlap in dietary items and feeding synchrony between mother and juvenile depends on several types of leaming.

Infant parking and nesting, not allomaternal care, influence Malagasy primate life histories

It is suggested that Malagasy strepsirrhines may not equally benefit from allomaternal care compared to haplorrhines because reproductive rates are less flexible and allom maternal care may instead increase infant survival in Madagascar’s harsh and unpredictable environment.

Special relationships instead of female dominance for redfronted lemurs, Eulemur fulvus rufus

Results support the view that the male–female pair is the fundamental social unit of E. fulvus and suggest that female partnership with individual males obviates dominance behavior, including female dominance, in this lemurid primate.



Tactics of care for young infants by forest‐living ruffed lemurs (Varecia variegata variegata): Ground nests, parking, and biparental guarding

Two major modes of neonate care in Varecia exist: serial use of multiple ground nests and “parking” of infants high in trees, suggesting this tactic of care for neonates plausible.

Food choice from endemic North Carolina tree species by captive prosimians (Lemur fulvus)

Captive‐born lemurs apparently use their sense of smell and taste in choosing what to eat and seem just as capable as free‐ranging animals in finding food when faced with the chemical defenses that protect trees from insect predation.

A comparison of the reproductive cycle of three species of Lemur.

Circulating testosterone levels in males confirm previously described seasonal gonadal function and the reproductive cycle of the female lemur is discussed and compared to the cycles of estrous and menstrual animals.

Lactation and interbirth interval in the Senegal galago (Galago senegalensis moholi).

Females whose infants died within 3 weeks of birth had significantly shorter interbirth intervals and postpartum anovulatory intervals than did females who raised their infants until weaning.

Lactation length in three species of Galago

  • M. Izard
  • Biology, Medicine
    American journal of primatology
  • 1987
The lactation lengths determined in this study are substantially longer than those reported by investigators who used observational techniques, and these discrepancies may be partially explained by failure to observe nursing during the diurnal inactive period.

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The evolution of the infant cry is essentially a reflection of the evolution of mammals. The origin of suckling behavior and the delivery of milk from the mother gave rise to the intimacy of

Relactation: an overview.

Although relactation is an accepted fact in many cultures, even well-trained pediatricians in both the developed and developing countries may be unaware of the potential relactations has in good infant care.

Non-puerperal induced lactation.

The December 1971 issue of Pediatrics has just become available here and the letter by Dr. Robert Cohen "Breast Feeding Without Pregnancy," and the note by the Associate Editor are amplified.