
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_01346 | |
| Hgig_01347 | PROTEIN CBG27172 |
| Hgig_01348 | |
| Hgig_01349 | |
| Hgig_01350 | |
| Hgig_01351 | SPHINGOSINE KINASE |
| Hgig_01352 | |
| Hgig_01353 | |
| Hgig_01354 | |
| Hgig_01355 | |
| Hgig_01356 | REVERSE TRANSCRIPTASE |
| Hgig_01357 | |
| Hgig_01358 | |
| Hgig_01359 | EUKARYOTIC TRANSLATION INITIATION FACTOR 2-ALPHA KINASE EIF2-ALPHA KINASE -RELATED |
| Hgig_01360 | IONOTROPIC RECEPTOR 20A-RELATED |
| Hgig_01361 | IONOTROPIC RECEPTOR 20A-RELATED |
| Hgig_01362 | ZINC FINGER PROTEIN |
| Hgig_01363 | |
| Hgig_01364 | IONOTROPIC RECEPTOR 20A-RELATED |
| Hgig_01365 | |
| Hgig_01366 | |
| Hgig_01367 | |
| Hgig_01368 | VALACYCLOVIR HYDROLASE |
| Hgig_01369 | EXTRACELLULAR MATRIX GLYCOPROTEIN RELATED |
| Hgig_01370 | EXTRACELLULAR MATRIX GLYCOPROTEIN RELATED |
| Hgig_01371 | EXTRACELLULAR MATRIX GLYCOPROTEIN RELATED |
| Hgig_01372 | |
| Hgig_01373 | TENEURIN AND N-ACETYLGLUCOSAMINE-1-PHOSPHODIESTER ALPHA-N-ACETYLGLUCOSAMINIDASE |
| Hgig_01374 | TENEURIN AND N-ACETYLGLUCOSAMINE-1-PHOSPHODIESTER ALPHA-N-ACETYLGLUCOSAMINIDASE |
| Hgig_01375 | TENEURIN AND N-ACETYLGLUCOSAMINE-1-PHOSPHODIESTER ALPHA-N-ACETYLGLUCOSAMINIDASE |
| Hgig_01376 | |
| Hgig_01377 | |
| Hgig_01378 | |
| Hgig_01379 | TRANSPOSABLE ELEMENT-RELATED |
| Hgig_01380 | ZGC:101858 |
| Hgig_01381 | ALPHA-AMYLASE FAMILY MEMBER |
| Hgig_01382 | |
| Hgig_01383 | ZINC FINGER MIZ DOMAIN-CONTAINING PROTEIN |
| Hgig_01384 | |
| Hgig_01385 | TRANSPOSABLE ELEMENT-RELATED |
| Hgig_01386 | |
| Hgig_01387 | PEPTIDYLPROLYL ISOMERASE |
| Hgig_01388 | ENDO/EXONUCLEASE/PHOSPHATASE DOMAIN-CONTAINING PROTEIN |
| Hgig_01389 | SI:CH211-266K2.1 |
| Hgig_01390 | |
| Hgig_01391 | |
| Hgig_01392 | TRYPSIN-RELATED |
| Hgig_01393 | BETA-1,4-GLUCURONYLTRANSFERASE 1 |
| Hgig_01394 | IP22168P |
| Hgig_01395 | IP22168P |