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_05796
Hgig_05797JTB PROTEIN-RELATED
Hgig_05798CLASS IV SAM-BINDING METHYLTRANSFERASE-RELATED
Hgig_05799OPSIN
Hgig_05800B2 BRADYKININ RECEPTOR/ANGIOTENSIN II RECEPTOR
Hgig_05801
Hgig_05802PROTEASE FAMILY M24 METHIONYL AMINOPEPTIDASE, AMINOPEPTIDASE P
Hgig_05803PROTEASE FAMILY M24 METHIONYL AMINOPEPTIDASE, AMINOPEPTIDASE P
Hgig_05804REVERSE TRANSCRIPTASE DOMAIN-CONTAINING PROTEIN
Hgig_05805PROTEASE FAMILY M24 METHIONYL AMINOPEPTIDASE, AMINOPEPTIDASE P
Hgig_05806REVERSE TRANSCRIPTASE DOMAIN-CONTAINING PROTEIN
Hgig_05807TRANSPOSABLE ELEMENT TC3 TRANSPOSASE-LIKE PROTEIN
Hgig_05808H2.0-LIKE HOMEOBOX PROTEIN
Hgig_05809MITOGEN-ACTIVATED PROTEIN KINASE KINASE KINASE 20-RELATED
Hgig_05810MITOGEN-ACTIVATED PROTEIN KINASE KINASE KINASE 20-RELATED
Hgig_05811DOLICHYL-PHOSPHATE-MANNOSE--PROTEIN MANNOSYLTRANSFERASE
Hgig_05812IRON-SULFUR CLUSTER ASSEMBLY PROTEIN
Hgig_05813
Hgig_05814
Hgig_05815NUCLEOLAR PROTEIN FAMILY A MEMBER 1 SNORNP PROTEIN GAR1
Hgig_05816DEVELOPMENTALLY REGULATED GTP-BINDING PROTEIN-RELATED
Hgig_05817
Hgig_05818DEVELOPMENTALLY REGULATED GTP-BINDING PROTEIN-RELATED
Hgig_05819
Hgig_05820
Hgig_05821ASPARTYL/LYSYL-TRNA SYNTHETASE
Hgig_05822ASPARTYL/LYSYL-TRNA SYNTHETASE
Hgig_05823SERINE/THREONINE-PROTEIN KINASE IAL-RELATED
Hgig_05824CTX-RELATED TYPE I TRANSMEMBRANE PROTEIN
Hgig_05825
Hgig_05826
Hgig_05827
Hgig_05828
Hgig_05829FI18240P1-RELATED
Hgig_05830OTU DOMAIN CONTAINING PROTEIN
Hgig_05831LOW-TEMPERATURE VIABILITY PROTEIN LTV1-RELATED
Hgig_05832PROTEIN-S ISOPRENYLCYSTEINE O-METHYLTRANSFERASE
Hgig_05833DNA2/NAM7 HELICASE FAMILY
Hgig_05834
Hgig_05835PROTEIN CBG27172
Hgig_05836FI18240P1-RELATED
Hgig_05837
Hgig_05838DEFECTIVE PROBOSCIS EXTENSION RESPONSE DPR -RELATED
Hgig_05839DEFECTIVE PROBOSCIS EXTENSION RESPONSE DPR -RELATED
Hgig_05840OVOCHYMASE-RELATED
Hgig_05841CUTICLE PROTEIN
Hgig_05842
Hgig_05843DOUBLESEX AND MAB-3 RELATED TRANSCRIPTION FACTOR DMRT
Hgig_05844APICAL ENDOSOMAL GLYCOPROTEIN PRECURSOR.
Hgig_05845LIPASE
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