Evidence map›Paper›PMID 29992043›Full record

ArticleZoological letters2018

Sex-changing patterns of Akoya pearl oyster (

Jeane Siswitasari Mulyana, Toshiharu Iwai, Masaharu Takahashi, Achmad Farajallah, Yusli Wardiatno, Chiemi Miura, Takeshi Miura

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Zoological letters, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.7field-weighted citation impact, top 29% 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

1 citing paper in PubMed, 10 citations in OpenAlex.

  1. 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

7 authors at 2 institutions in 2 countries.

Jeane Siswitasari Mulyana1Department of Biology, Bogor Agricultural University, Bogor, West Jawa Indonesia.
Toshiharu Iwai2Laboratory of Fish Reproductive Physiology, Graduate School of Agriculture, Ehime University, Matsuyama, Ehime Japan.
Masaharu TakahashiPearl Oyster Research Laboratory, Shimonada Fisheries Cooperative, Uwajima, Ehime Japan.
Achmad Farajallah4Department of Aquatic Resources Management, Bogor Agricultural University, Bogor, West Jawa Indonesia.
Yusli Wardiatno4Department of Aquatic Resources Management, Bogor Agricultural University, Bogor, West Jawa Indonesia.
Chiemi Miura2Laboratory of Fish Reproductive Physiology, Graduate School of Agriculture, Ehime University, Matsuyama, Ehime Japan.
Takeshi Miura2Laboratory of Fish Reproductive Physiology, Graduate School of Agriculture, Ehime University, Matsuyama, Ehime Japan.
Ehime University · JPIPB University · ID

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPearl production by transplantation in Akoya pearl oyster

resultsTo investigate sex in Akoya pearl oyster, we collected small gonadal fragments from 1-year-old pearl oysters by biopsy. Using the collected gonad fragment, the sex of the oysters was determined by microscopic observation, and the remaining samples were stored for gene expression analyses. All oysters were labeled to distinguish each individual for serial samplings every four months over the 2-year study period. At the start of experiment, nearly all of the pearl oysters were male, but the male:female ratio ofmale decreased over the course of the experiment. Interestingly, the number of males increased after spring, during the breeding season. This suggests that, in pearl oyster, sex is affected by season. Expression analysis of sex-related genes (

conclusionsThese results suggest that Akoya pearl oysters are hermaphroditic, and that females appear as necessary, such as during the breeding season. These findings could contribute to higher efficiency and quality of pearl cultivation.

Indexed as

Gene expressionGerm cellsGonadal stageHermaphroditeMale ratio

Identifiers

PMID29992043
PMCPMC5987639
OpenAlexW2806156100

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.