Evidence map›Paper›PMID 42489076›Full record

ArticleDevelopment (Cambridge, England)2026

The Drosophila ovary produces two waves of adult follicles and a previously unreported pupal wave that turns over.

Wayne Yunpeng Fu, Allan C Spradling

Abstract read
In one paragraph

Article in Development (Cambridge, England), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing 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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

2 authors.

Wayne Yunpeng FuCarnegie Institution for Science, Washington, DC 20015, USA.ORCID 0000-0003-4279-2504
Allan C SpradlingCarnegie Institution for Science, Washington, DC 20015, USA.ORCID 0000-0002-5251-1801

Funding

Howard Hughes Medical Institute
6 · The paper itself

Abstract

Ovarian follicles in most species are assumed to develop using a single pathway. However, in Drosophila pupae, lineage tracing 2937 single-cell clones identified three follicle 'waves' that follow distinct programs arrayed anterior to posterior in the germarium and developing ovarioles. 40 primordial germ cells (PGCs) become anterior germline stem cells that produce 'wave 2' follicles throughout adulthood. 100 PGCs posterior to wave 2 develop into 'wave 1.5' follicles that form the earliest laid eggs. Different follicle stem cells sequentially occupy the same two niches timed to provide both waves with specific follicle cells, consistent with programmed differences between waves 2 and 1.5. 'Wave 1' PGCs located even further posteriorly proliferate, form cysts, interact with swarm cells, degenerate, break from the ovary 22-26 h after puparium formation, and release lipid-enriched vacuoles. Some testis germ cells behave similarly. We speculate that wave 1 germ cells contribute directly or indirectly to the pharate adult ecdysone pulse that mediates adult development and sex-specific neural remodeling. Why Drosophila follicle waves generally resemble those clarified recently in mouse pre-adult ovaries merits additional study.

Indexed as

DrosophilaDrosophila melanogasterOvarian FollicleOvaryAnimalsCell LineageFemaleGerm CellsMalePupaDrosophila melanogasterFollicle stem cellGerm cellGermline stem cellOvarian follicle wavePupal ovary

Identifiers

PMID42489076
PMCPMC13535104

What Socratic 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 Socratic graph.