Evidence map›Paper›PMID 30963928›Full record

ArticleProceedings. Biological sciences2019

From groups to communities in western lowland gorillas.

Giovanni Forcina, Dominique Vallet, Pascaline J Le Gouar, Rubén Bernardo-Madrid, Germán Illera, Guillem Molina-Vacas, Stéphane Dréano, Eloy Revilla, José Domingo Rodríguez-Teijeiro, Nelly Ménard and 2 more

Abstract read
In one paragraph

Article in Proceedings. Biological sciences, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed
–field-weighted citation impact
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

18 citing papers in PubMed.

  1. The Evolutionary-Ecological Basis of Xenophilia.Human nature (Hawthorne, N.Y.) · 2026
    Article
  2. Article
  3. Close encounters of the friendly kind: pacific between-group interactions in primates.Biological reviews of the Cambridge Philosophical Society · 2025
    Review
  4. Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Hierarchical social modularity in gorillas.Proceedings. Biological sciences · 2019
    Article
  18. From groups to communities in western lowland gorillas.Proceedings. Biological sciences · 2019
    Article
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

12 authors.

Giovanni Forcina1 Departments of Integrative Ecology and Conservation Biology, Estación Biológica de Doñana (EBD-CSIC) , 41092 Seville , Spain.
Dominique Vallet3 CNRS, Univ Rennes, EcoBio (Ecosystèmes, Biodiversité, Évolution) - UMR 6553, F-35000 Rennes, France.
Pascaline J Le Gouar3 CNRS, Univ Rennes, EcoBio (Ecosystèmes, Biodiversité, Évolution) - UMR 6553, F-35000 Rennes, France.
Rubén Bernardo-Madrid1 Departments of Integrative Ecology and Conservation Biology, Estación Biológica de Doñana (EBD-CSIC) , 41092 Seville , Spain.
Germán Illera4 Odzala-Lossi Conservation/Research Program, SPAC Foundation gGmbH , Berlin, Germany.
Guillem Molina-Vacas4 Odzala-Lossi Conservation/Research Program, SPAC Foundation gGmbH , Berlin, Germany.
Stéphane Dréano6 Univ Rennes, CNRS, IGDR (Institut de génétique et développement de Rennes) - UMR 6290 , F-35000 Rennes , France.
Eloy Revilla1 Departments of Integrative Ecology and Conservation Biology, Estación Biológica de Doñana (EBD-CSIC) , 41092 Seville , Spain.
José Domingo Rodríguez-Teijeiro5 Department of Evolutionary Biology, Ecology and Environmental Sciences, Universitat de Barcelona , Barcelona , Spain.
Nelly Ménard3 CNRS, Univ Rennes, EcoBio (Ecosystèmes, Biodiversité, Évolution) - UMR 6553, F-35000 Rennes, France.
Magdalena Bermejo4 Odzala-Lossi Conservation/Research Program, SPAC Foundation gGmbH , Berlin, Germany.
Carles Vilà1 Departments of Integrative Ecology and Conservation Biology, Estación Biológica de Doñana (EBD-CSIC) , 41092 Seville , Spain.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Social networks are the result of interactions between individuals at different temporal scales. Thus, sporadic intergroup encounters and individual forays play a central role in defining the dynamics of populations in social species. We assessed the rate of intergroup encounters for three western lowland gorilla ( Gorilla gorilla gorilla) groups with daily observations over 5 years, and non-invasively genotyped a larger population over four months. Both approaches revealed a social system much more dynamic than anticipated, with non-aggressive intergroup encounters that involved social play by immature individuals, exchanges of members between groups likely modulated by kinship, and absence of infanticide evidenced by infants not fathered by the silverback of the group where they were found. This resulted in a community composed of groups that interacted frequently and not-aggressively, contrasting with the more fragmented and aggressive mountain gorilla ( G. beringei beringei) societies. Such extended sociality can promote the sharing of behavioural and cultural traits, but might also increase the susceptibility of western lowland gorillas to infectious diseases that have decimated their populations in recent times.

Indexed as

Social BehaviorAnimalsCongoFemaleGorilla gorillaMalecommunityGorillainfanticideinfectious diseaseskinshipsociality

Identifiers

PMID30963928
PMCPMC6408619

What OpenQuestion holds

Textmetadata
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.