Evidence map›Paper›PMID 26900212›Full record

ArticleBehavioral ecology and sociobiology

The reproductive advantages of a long life: longevity and senescence in wild female African elephants.

Phyllis C Lee, Victoria Fishlock, C Elizabeth Webber, Cynthia J Moss

Open access · hybridAbstract read
In one paragraph

Article in Behavioral ecology and sociobiology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed, 1 pooled it
8.6field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

30 citing papers in PubMed, 1 synthesis or guideline pooled it, 129 citations in OpenAlex.

  1. Knowledge transmission, culture and the consequences of social disruption in wild elephants.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025
    Pooled it
  2. A population threshold for dedicated teaching.Proceedings of the National Academy of Sciences of the United States of America · 2026
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  18. Nontraditional systems in aging research: an update.Cellular and molecular life sciences : CMLS · 2021
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 2 countries.

Phyllis C LeeAmboseli Trust for Elephants, P.O. Box 15135, Langata, 00509 Nairobi Kenya ; Behaviour and Evolution Research Group, Psychology, School of Natural Sciences, University of Stirling, Stirling, FK9 4LA UK.ORCID 0000-0002-4296-3513
Victoria FishlockAmboseli Trust for Elephants, P.O. Box 15135, Langata, 00509 Nairobi Kenya ; Behaviour and Evolution Research Group, Psychology, School of Natural Sciences, University of Stirling, Stirling, FK9 4LA UK.
C Elizabeth WebberBehaviour and Evolution Research Group, Psychology, School of Natural Sciences, University of Stirling, Stirling, FK9 4LA UK.
Cynthia J MossAmboseli Trust for Elephants, P.O. Box 15135, Langata, 00509 Nairobi Kenya.
University of Stirling · GBSave the Elephants · KE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Long-lived species such as elephants, whales and primates exhibit extended post-fertile survival compared to species with shorter lifespans but data on age-related fecundity and survival are limited to few species or populations. We assess relationships between longevity, reproductive onset, reproductive rate and age for 834 longitudinally monitored wild female African elephants in Amboseli, Kenya. The mean known age at first reproduction was 13.8 years; only 5 % commenced reproduction by 10 years. Early reproducers (<12.5 years) had higher age-specific fertility rates than did females who commenced reproduction late (15+ years) with no differences in survival between these groups. Age-specific reproductive rates of females dying before 40 years were reduced by comparison to same-aged survivors, illustrating a mortality filter and reproductive advantages of a long life. Overall, 95 % of fertility was completed before 50, and 95 % of mortality experienced by age 65, with a mean life expectancy of 41 years for females who survived to the minimum age at first birth (9 years). Elephant females have a relatively long period (c. 16 years) of viability after 95 % completed fertility, although reproduction does not entirely cease until they are over 65. We found no evidence of increased investment among females aged over 40 in terms of delay to next birth or calf mortality. The presence of a mother reproducing simultaneously with her daughter was associated with higher rates of daughter reproduction suggesting advantages from maternal (and grandmaternal) co-residence during reproduction.

Indexed as

Age-specific reproductive ratesCare allocationGrandmotheringMortality filtersPost-reproductive survival

Identifiers

PMID26900212
PMCPMC4748003
OpenAlexW2284106360

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.