
Hirondellea gigas is a species of amphipod crustacean found in the hadal zone of the Pacific Ocean, particularly in the Mariana Trench. It is adapted to extreme deep-sea environments, living at depths exceeding 10,000 meters where pressures are immense and temperatures are near freezing. This species feeds on organic matter that sinks to the ocean floor, playing a crucial role in the deep-sea ecosystem as a scavenger. Its unique adaptations, such as a lightweight exoskeleton and specialized enzymes, allow it to survive and thrive in one of the most extreme habitats on Earth.
| Species | Phylum | Common Name | Ecosystem | Depth | Habitat | NCBI Taxonomy ID |
|---|---|---|---|---|---|---|
| Hirondellea gigas | Arthropoda | - | Deep sea | 6,800-11,000 | Mariana Trench in the northwestern Pacific Ocean | 1518452 |
| Genome Assembly | Genome Size | Assembly level | Released year | WGS accession | Submitter | BioProject | BUSCO completeness | Gene Number |
|---|---|---|---|---|---|---|---|---|
| - | 13.92Gb | Chromosome | 2025 | CNA0142381 | - | CNP0005374 | 89.34% | 27,881 |
| Title | Journal | Pubmed ID |
|---|---|---|
| The amphipod genome reveals population dynamics and adaptations to hadal environment | Cell | 40054448 |
| Gene ID | Description |
|---|---|
| Hgig_01396 | GALACTOSIDE 2-L-FUCOSYLTRANSFERASE |
| Hgig_01397 | GALACTOSIDE 2-L-FUCOSYLTRANSFERASE |
| Hgig_01398 | GALACTOSIDE 2-L-FUCOSYLTRANSFERASE |
| Hgig_01399 | NETRIN/LAMININ-RELATED |
| Hgig_01400 | |
| Hgig_01401 | |
| Hgig_01402 | E3 UBIQUITIN-PROTEIN LIGASE CHIP |
| Hgig_01403 | UBIQUITIN CARBOXYL-TERMINAL HYDROLASE |
| Hgig_01404 | NUCLEOTIDE-BINDING PROTEIN NBP35 YEAST -RELATED |
| Hgig_01405 | LITHOSTATHINE |
| Hgig_01406 | UBIQUITIN-PROTEIN LIGASE E3C |
| Hgig_01407 | HEPARAN SULFATE 2-O-SULFOTRANSFERASE |
| Hgig_01408 | MEVALONATE KINASE |
| Hgig_01409 | DOLICHYL GLYCOSYLTRANSFERASE |
| Hgig_01410 | LACTOSYLCERAMIDE 4-ALPHA-GALACTOSYLTRANSFERASE ALPHA- 1,4-GALACTOSYLTRANSFERASE |
| Hgig_01411 | |
| Hgig_01412 | NINJURIN-RELATED |
| Hgig_01413 | GLUTAMINE SYNTHETASE |
| Hgig_01414 | |
| Hgig_01415 | |
| Hgig_01416 | |
| Hgig_01417 | |
| Hgig_01418 | |
| Hgig_01419 | |
| Hgig_01420 | DUDULIN-RELATED |
| Hgig_01421 | MANNOSYL-OLIGOSACCHARIDE ALPHA-1,2-MANNOSIDASE-RELATED |
| Hgig_01422 | SERINE/THREONINE-PROTEIN KINASE |
| Hgig_01423 | |
| Hgig_01424 | LONGEVITY ASSURANCE FACTOR 1 LAG1 |
| Hgig_01425 | ARSENITE INDUCUBLE RNA ASSOCIATED PROTEIN AIP-1-RELATED |
| Hgig_01426 | LONGEVITY ASSURANCE FACTOR 1 LAG1 |
| Hgig_01427 | AGAP001623-PA |
| Hgig_01428 | SET AND MYND DOMAIN-CONTAINING PROTEIN 5 |
| Hgig_01429 | M-AAA PROTEASE-INTERACTING PROTEIN 1, MITOCHONDRIAL |
| Hgig_01430 | ALPHA CATENIN |
| Hgig_01431 | E3 UBIQUITIN-PROTEIN LIGASE PPP1R11-RELATED |
| Hgig_01432 | M-AAA PROTEASE-INTERACTING PROTEIN 1, MITOCHONDRIAL |
| Hgig_01433 | |
| Hgig_01434 | RNF121 PROTEIN |
| Hgig_01435 | BEAT PROTEIN |
| Hgig_01436 | |
| Hgig_01437 | BEAT PROTEIN |
| Hgig_01438 | |
| Hgig_01439 | |
| Hgig_01440 | |
| Hgig_01441 | |
| Hgig_01442 | HOMEOBOX PROTEIN ARISTALESS |
| Hgig_01443 | PAIRED MESODERM HOMEOBOX PROTEIN 1-RELATED |
| Hgig_01444 | |
| Hgig_01445 | NEPHRIN |