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.

Classification

Animalia (Kingdom); Arthropoda (Phylum); Crustacea (Subphylum); Multicrustacea (Superclass); Malacostraca (Class); Eumalacostraca (Subclass); Peracarida (Superorder); Amphipoda (Order); Amphilochidea (Suborder); Lysianassida (Infraorder); Lysianassidira (Parvorder); Lysianassoidea (Superfamily); Hirondelleidae (Family); Hirondellea (Genus); Hirondellea gigas (Species)

Original Name

Tetronychia gigas Birstein & M. Vinogradov, 1955

Original description

(Birstein et al., 1955)

Distribution/locality

Philippine Trench from Philippine Sea, Mariana Trench from North Pacific Ocean and Kuril-Kamchatka Trench


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 completeness (%)Scaffold/Contig N50 (kb)GC content (%)Repeat Rate (%)Gene Number
-13.92GbChromosome2025CNA0142381-CNP000537489.34 458,700/466.138.872.7527,881

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

Gene Information

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Gene IDDescription
Hgig_17547
Hgig_17548PHOSPHOLIPASE D
Hgig_17549PHOSPHOLIPASE D
Hgig_17550TRANSPOSASE-RELATED
Hgig_17551
Hgig_17552RIKEN CDNA 9930021J03 GENE
Hgig_17553NEURABIN
Hgig_17554DIACYLGLYCEROL KINASE
Hgig_17555DIACYLGLYCEROL KINASE
Hgig_17556
Hgig_17557NEUROLIGIN
Hgig_17558
Hgig_17559TRANS-SULFURATION ENZYME FAMILY MEMBER
Hgig_17560IONOTROPIC RECEPTOR 20A-RELATED
Hgig_17561TRANS-SULFURATION ENZYME FAMILY MEMBER
Hgig_17562RHO GUANINE NUCLEOTIDE EXCHANGE FACTOR
Hgig_17563
Hgig_17564CARBONIC ANHYDRASE
Hgig_17565CARBONIC ANHYDRASE
Hgig_17566
Hgig_17567METALLOPROTEASE
Hgig_17568
Hgig_17569RNA EXONUCLEASE REXO1 / RECO3 FAMILY MEMBER-RELATED
Hgig_17570
Hgig_17571UPF0545 PROTEIN C22ORF39
Hgig_17572
Hgig_17573HAT FAMILY DIMERISATION DOMAINCONTAINING PROTEIN-RELATED
Hgig_17574CBP/P300-RELATED
Hgig_17575CBP/P300-RELATED
Hgig_17576KINETOCHORE-ASSOCIATED PROTEIN 1
Hgig_17577KINETOCHORE-ASSOCIATED PROTEIN 1
Hgig_17578
Hgig_17579STAR-RELATED LIPID TRANSFER PROTEIN 9
Hgig_17580
Hgig_17581DNA-BINDING PROTEIN INHIBITOR
Hgig_17582PROTEASE FAMILY M14 CARBOXYPEPTIDASE A,B
Hgig_17583NUCLEAR HORMONE RECEPTOR HR3-RELATED
Hgig_17584UNCHARACTERIZED
Hgig_17585AGAP002036-PA
Hgig_17586
Hgig_17587NUCLEAR HORMONE RECEPTOR HR3-RELATED
Hgig_17588PHOSPHATIDYLINOSITOL GLYCAN
Hgig_17589ATILLA, ISOFORM B-RELATED-RELATED
Hgig_17590CENTROSOME-ASSOCIATED PROTEIN 350
Hgig_17591
Hgig_17592
Hgig_17593COILED-COIL DOMAIN-CONTAINING PROTEIN 102A
Hgig_17594ACYL-COA SYNTHETASE
Hgig_17595
Hgig_17596PHOSPHOINOSITIDE-SPECIFIC PHOSPHOLIPASE C FAMILY PROTEIN
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