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_00096
Hgig_00097TRYPTOPHAN 2,3-DIOXYGENASE
Hgig_00098MEMBRANE-ASSOCIATED PROGESTERONE RECEPTOR COMPONENT-RELATED
Hgig_00099
Hgig_00100
Hgig_00101SGT1 PROTEIN HSGT1 SUPPRESSOR OF GCR2
Hgig_00102TRANSCRIPTION INITIATION FACTOR IIE, ALPHA SUBUNIT
Hgig_00103
Hgig_00104PRE-MRNA PROCESSING PROTEIN PRP39-RELATED
Hgig_00105
Hgig_00106
Hgig_00107
Hgig_00108
Hgig_00109E3 UBIQUITIN-PROTEIN LIGASE TRIM36-RELATED
Hgig_00110
Hgig_00111SI:CH211-266K2.1
Hgig_00112CYCLIC NUCLEOTIDE PHOSPHODIESTERASE
Hgig_001132-OXOGLUTARATE (2OG) AND FE(II)-DEPENDENT OXYGENASE SUPERFAMILY PROTEIN-RELATED
Hgig_001142-OXOGLUTARATE (2OG) AND FE(II)-DEPENDENT OXYGENASE SUPERFAMILY PROTEIN-RELATED
Hgig_00115SERINE PROTEASE-RELATED
Hgig_00116
Hgig_00117SERINE PROTEASE-RELATED
Hgig_00118
Hgig_00119SH3 DOMAIN-CONTAINING
Hgig_00120
Hgig_00121
Hgig_00122CADHERIN-87A
Hgig_00123CADHERIN-23
Hgig_00124PROTEASE M1 ZINC METALLOPROTEASE
Hgig_00125PEPTIDE CHAIN RELEASE FACTOR SUBUNIT 1
Hgig_00126
Hgig_00127THAP DOMAIN PROTEIN
Hgig_00128GOS-28 SNARE- RELATED
Hgig_00129
Hgig_00130FCH AND DOUBLE SH3 DOMAINS PROTEIN
Hgig_00131
Hgig_00132SI:CH211-266K2.1
Hgig_00133UBIQUITIN-CONJUGATING ENZYME E2
Hgig_00134RIBOSOMAL PROTEIN L5-RELATED
Hgig_00135
Hgig_00136GUANYLATE KINASE-RELATED
Hgig_00137
Hgig_00138
Hgig_00139ER LUMEN PROTEIN RETAINING RECEPTOR
Hgig_00140
Hgig_001415-OXOPROLINASE RELATED
Hgig_00142AGAP005574-PA
Hgig_00143THAP DOMAIN-CONTAINING
Hgig_00144UNCHARACTERIZED
Hgig_00145
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