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_01996
Hgig_01997ELONGATION FACTOR TU-RELATED
Hgig_01998ELONGATION FACTOR TU-RELATED
Hgig_01999
Hgig_02000CCAAT-BINDING FACTOR-RELATED
Hgig_02001MITOCHONDRIAL GLYCINE TRANSPORTER
Hgig_02002
Hgig_02003MITOCHONDRIAL GLYCINE TRANSPORTER
Hgig_02004PBS LYASE HEAT-LIKE PROTEIN
Hgig_02005REVERSE TRANSCRIPTASE DOMAIN-CONTAINING PROTEIN
Hgig_02006
Hgig_02007TRANSPOSABLE ELEMENT-RELATED
Hgig_02008
Hgig_02009
Hgig_02010
Hgig_02011SIDESTEP PROTEIN
Hgig_02012
Hgig_02013
Hgig_02014
Hgig_02015
Hgig_02016GALACTOSE-3-O-SULFOTRANSFERASE
Hgig_02017
Hgig_02018
Hgig_02019
Hgig_02020UBIQUITIN-ACTIVATING ENZYME E1
Hgig_02021RAW, ISOFORM A
Hgig_02022NEUROPEPTIDE Y RECEPTOR
Hgig_02023RAW, ISOFORM A
Hgig_02024
Hgig_02025
Hgig_02026
Hgig_02027TRANSCRIPTIONAL REPRESSOR CTCFL-RELATED
Hgig_02028REVERSE TRANSCRIPTASES
Hgig_02029ATP-DEPENDENT RNA HELICASE
Hgig_02030ATP-DEPENDENT RNA HELICASE
Hgig_02031UFM1-SPECIFIC PROTEASE 2
Hgig_02032REVERSE TRANSCRIPTASE DOMAIN-CONTAINING PROTEIN
Hgig_02033
Hgig_02034JNK/SAPK-ASSOCIATED PROTEIN
Hgig_02035ORIGIN RECOGNITION COMPLEX SUBUNIT 5
Hgig_02036NUCLEAR PORE COMPLEX PROTEIN SEC13 / SEH1 FAMILY MEMBER
Hgig_02037NON-LTR RETROLELEMENT REVERSE TRANSCRIPTASE-LIKE PROTEIN-RELATED
Hgig_02038NUCLEAR PORE COMPLEX PROTEIN SEC13 / SEH1 FAMILY MEMBER
Hgig_02039DNA LIGASE
Hgig_02040PROTEASE M1 ZINC METALLOPROTEASE
Hgig_02041PROTEASE M1 ZINC METALLOPROTEASE
Hgig_02042PROTEASE M1 ZINC METALLOPROTEASE
Hgig_02043PROTEASE M1 ZINC METALLOPROTEASE
Hgig_02044GLYCINE-RICH RNA-BINDING PROTEIN RZ1A
Hgig_02045
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