French Guiana Freshwater Fish 12S DNA Reference Library

French Guiana's freshwater fish biodiversity is documented in a 12S mitochondrial DNA reference library containing 1,557 sequences. The library covers 369 species across 51 families, representing 88.92% of the region's freshwater fish species and includes intraspecific diversity. Sequences target two common eDNA metabarcoding primers, Teleo1 and 12S-V5, enabling species identification from environmental samples.

Use Cases

• Species identification from eDNA samples based on Teleo1 and 12S-V5 primer sequences.
• Validating and improving taxonomic assignments in Neotropical fish biodiversity surveys.
• Studying intraspecific genetic diversity within French Guiana's freshwater fish populations.
• Filling reference gaps for regional biodiversity assessments covering 6.31% of Neotropical fish species.

Strengths

• High regional species coverage, with sequences for 88.92% of freshwater fish species in French Guiana.
• Includes intraspecific diversity for most of the 369 covered species, aiding in finer genetic resolution.
• Based on DNA from 1,439 field-collected specimens supplemented by 118 museum records, providing a solid specimen foundation.
• Covers a significant proportion of higher Neotropical taxa (56.04% of families, 23.05% of genera).

Limitations

• Column names and data structure are not specified in the provided metadata, limiting immediate understanding of the tabular layout.
• The dataset's temporal coverage for specimen collection is not explicitly defined, though it references over 25 field expeditions.
• While broad for the region, the library covers a smaller fraction (6.31%) of total Neotropical fish species.

Provenance

Source

Sebastien Brosse; field collections and museum DNA records.

Collection Method

DNA extracted from 1,439 specimens collected during field expeditions, complemented by 118 specimens from museum collections.

Freshness

Last updated on 2026-03-19.

Geography

French Guiana, northern Amazonian region; relevant for broader Neotropical studies.