About Hirondellea gigas

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.


Basic Information
SpeciesPhylumCommon NameEcosystemDepthHabitatNCBI Taxonomy ID
Hirondellea gigasArthropoda-Deep sea6,800-11,000Mariana Trench in the northwestern Pacific Ocean1518452

Genome Assembly Information
Genome AssemblyGenome SizeAssembly levelReleased yearWGS accessionSubmitterBioProjectBUSCO completenessGene Number
-13.92GbChromosome2025CNA0142381-CNP000537489.34%27,881

References
TitleJournalPubmed ID
The amphipod genome reveals population dynamics and adaptations to hadal environmentCell40054448

Gene Information

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Gene IDDescription
Hgig_03746
Hgig_03747
Hgig_03748UNCHARACTERIZED
Hgig_03749RIBONUCLEASE H1
Hgig_03750STEROL DESATURASE-RELATED PROTEIN
Hgig_03751LEUCINE ZIPPER PROTEIN 4-RELATED
Hgig_03752
Hgig_03753LACTOSYLCERAMIDE 4-ALPHA-GALACTOSYLTRANSFERASE ALPHA- 1,4-GALACTOSYLTRANSFERASE
Hgig_03754
Hgig_03755BICD FAMILY-LIKE CARGO ADAPTER
Hgig_03756
Hgig_03757WD-40 REPEAT PROTEIN
Hgig_03758QUEUINE TRNA-RIBOSYLTRANSFERASE ACCESSORY SUBUNIT 2
Hgig_03759
Hgig_03760TESTIS-EXPRESSED PROTEIN 264
Hgig_03761
Hgig_03762LARGE SUBUNIT GTPASE 1 HOMOLOG-RELATED
Hgig_03763NEUROPATHY TARGET ESTERASE/SWISS CHEESE D.MELANOGASTER
Hgig_03764NEUROPATHY TARGET ESTERASE/SWISS CHEESE D.MELANOGASTER
Hgig_03765NEUROPATHY TARGET ESTERASE/SWISS CHEESE D.MELANOGASTER
Hgig_03766TRANSCRIPTASE, PUTATIVE-RELATED-RELATED
Hgig_03767
Hgig_03768
Hgig_03769SODIUM/POTASSIUM-TRANSPORTING ATPASE SUBUNIT ALPHA
Hgig_03770PROTEIN CBG24663
Hgig_03771
Hgig_037725-HYDROXYTRYPTAMINE RECEPTOR
Hgig_037735-HYDROXYTRYPTAMINE RECEPTOR
Hgig_03774
Hgig_03775
Hgig_03776ATPASE H+-TRANSPORTING V1 SUBUNIT E1A-RELATED
Hgig_03777
Hgig_03778
Hgig_03779
Hgig_03780
Hgig_03781
Hgig_03782REVERSE TRANSCRIPTASE
Hgig_03783
Hgig_03784G-PROTEIN COUPLED RECEPTOR B0563.6-LIKE PROTEIN-RELATED
Hgig_03785
Hgig_03786G-PROTEIN COUPLED RECEPTOR B0563.6-LIKE PROTEIN-RELATED
Hgig_03787
Hgig_03788
Hgig_03789REVERSE TRANSCRIPTASE
Hgig_03790
Hgig_03791REVERSE TRANSCRIPTASE
Hgig_03792REVERSE TRANSCRIPTASE
Hgig_03793
Hgig_03794PROTEIN CBG27172
Hgig_03795BETA-1,4-GALACTOSYLTRANSFERASE
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