Data · collection · 2024
Dispersion of hooks on the anal fins of primary and secondary males in Brycon orbignyanus (Characiformes: Bryconidae): a secondary sexual trait for breeder selection
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Description
This dataset contains the digitized treatments in Plazi based on the original journal article Bianchini, Bárbara Correa, Quirino, Patricia Postingel, Cristan, Marina de Oliveira, Delgado, Maria Luiza Ribeiro, Gomes-Silva, Luciane, Benevente, Cristiane Fernanda, Grigoli-Olivio, Maiara Luzia, Ninhaus-Silveira, Alexandre, Veríssimo-Silveira, Rosicleire (2024): Dispersion of hooks on the anal fins of primary and secondary males in Brycon orbignyanus (Characiformes: Bryconidae): a secondary sexual trait for breeder selection.
Neotropical Ichthyology (e 230123) 22 (1): 1-15, DOI: 10.1590/1982-0224-2023-0123, URL: dx.doi.org/10.1590/1982-0224-2023-0123 Brycon orbignyanus exhibits seasonal reproduction where males can be distinguished from females by the roughness present in the anal fin of the specimens that represents a secondary sexual characteristic known as hooks. This study aimed to describe the appearance and morphology of hooks on the anal fin in B. orbignyanus and relate them to the phases of the reproductive cycle of these animals to determine a parameter that can be used for the selection of suitable males for use in induced reproduction.
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Monthly male specimens of B. orbignyanus of different ages were collected (n = 50 total; n = 10/month) and the specimens were euthanised, biometrically measured, and the testes and anal fins were collected. As sample were processed according to the typical techniques for light microscopy, stereomicroscope, diaphanization and scanning electron microscopy. Except for specimens in the testicular stage of Regenerating, hooks were observed in all other stages of the reproductive cycle in B. orbignyanus males; however, specimens that possess six or more rays with hooks are considered Spawning Capable and can be selected for breeding.
No differences were observed in hooks development patterns as related to secondary sexual characteristics among intersex individuals, primary males, or secondary males.
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Where it is published
- GBIF dataset page gbif.org/dataset/988678eb-53d4-463c-80d9-cf0d41420b41 ↗
landing page · from gbif
- DOI doi.org/10.15468/rku7bb ↗
DOI / persistent id · from gbif
Documentation and papers
- Publisher page tb.plazi.org/GgServer/summary/FF8E160C7A35FFD8FFD8FFCF6926FFEE ↗
documentation · from gbif
Catalogue records · 1
- GBIF API api.gbif.org/v1/dataset/988678eb-53d4-463c-80d9-cf0d41420b41 ↗
metadata API · from gbif
Topics
- From keywords
- Life Sciences
- Inferred from text
- Evolutionary biology 72% · Microscopy 75%
Provenance · 1 source records, 10 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| GBIF | 988678eb-53d4-463c-80d9-cf0d41420b41 | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · gbif | connector:gbif@1.0.0 | |
| concepts[field].anzsrc:group:3104 | enrichment · gbif | taxonomy-embedding@1.1.0 | title+keywords+description (72%) |
| concepts[field].local:field:life-sciences | mapping · gbif | connector:gbif@1.0.0 | |
| concepts[modality].local:modality:microscopy | enrichment · gbif | keyword-concept-rules@1.0.0 | title+description (75%) |
| created_date | source · gbif | connector:gbif@1.0.0 | |
| description | source · gbif | connector:gbif@1.0.0 | /description |
| license | source · gbif | connector:gbif@1.0.0 | |
| publication_date | source · gbif | connector:gbif@1.0.0 | |
| title | source · gbif | connector:gbif@1.0.0 | /title |
| updated_date | source · gbif | connector:gbif@1.0.0 |