Evidence map›Paper›PMID 27358291›Full record

ArticleOpen biology2016

Amphibians with infectious disease increase their reproductive effort: evidence for the terminal investment hypothesis.

Laura A Brannelly, Rebecca Webb, Lee F Skerratt, Lee Berger

Open access · goldAbstract read
In one paragraph

Article in Open biology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
6.3field-weighted citation impact, top 3% 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

21 citing papers in PubMed, 75 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
  5. Article
  6. Analysis of Reproductive Strategies and Immunological Interactions inAnimals : an open access journal from MDPI · 2025
    Article
  7. Review
  8. Article
  9. Article
  10. Amphibian infection tolerance to chytridiomycosis.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2023
    Review
  11. Article
  12. Article
  13. Review
  14. Description and ecophysiology of a new species ofInternational journal for parasitology. Parasites and wildlife · 2019
    Article
  15. Article
  16. Review
  17. Article
  18. A dynamic threshold model for terminal investment.Behavioral ecology and sociobiology · 2017
    Article
  19. Article
  20. 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

4 authors at 2 institutions in 1 country.

Laura A BrannellyOne Health Research Group, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Queensland, Australia laura.brannelly@my.jcu.edu.au.
Rebecca WebbOne Health Research Group, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Queensland, Australia.
Lee F SkerrattOne Health Research Group, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Queensland, Australia Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia.
Lee BergerOne Health Research Group, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Queensland, Australia Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Victoria, Australia.
James Cook University · AUUniversity of Melbourne · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Mounting an immune response to fight disease is costly for an organism and can reduce investment in another life-history trait, such as reproduction. The terminal investment hypothesis predicts that an organism will increase reproductive effort when threatened by disease. The reproductive fitness of amphibians infected with the deadly fungal pathogen Batrachochytrium dendrobatidis (Bd) is largely unknown. In this study, we explored gametogenesis in two endangered and susceptible frog species, Pseudophryne corroboree and Litoria verreauxii alpina. Gametogenesis, both oogenesis and spermatogenesis, increased when animals were experimentally infected with Bd In P. corroboree, infected males have thicker germinal epithelium, and a larger proportion of spermatocytes. In L. v. alpina, infected males had more spermatic cell bundles in total, and a larger proportion of spermatozoa bundles. In female L. v. alpina, ovaries and oviducts were larger in infected animals, and there were more cells present within the ovaries. Terminal investment has consequences for the evolution of disease resistance in declining species. If infected animals are increasing reproductive efforts and producing more offspring before succumbing to disease, it is possible that population-level selection for disease resistance will be minimized.

Indexed as

GametogenesisAnimalsAnuraChytridiomycotaCommunicable Diseases, EmergingEndangered SpeciesFemaleMaleMycosesOrgan SizePopulation Dynamicschytrid fungusoogenesisreproductionspermatogenesisterminal investmentwildlife disease

Identifiers

PMID27358291
PMCPMC4929933
OpenAlexW2472489545

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.