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_17297NEL HOMOLOG
Hgig_17298TRANSPOSABLE ELEMENT TC3 TRANSPOSASE-LIKE PROTEIN
Hgig_17299ARMADILLO REPEAT-CONTAINING PROTEIN 4 ARMC4
Hgig_17300
Hgig_17301
Hgig_17302
Hgig_17303G-PROTEIN COUPLED RECEPTOR TKR-1-RELATED
Hgig_17304
Hgig_17305
Hgig_17306
Hgig_17307
Hgig_17308
Hgig_17309PROTEIN CBG20215-RELATED
Hgig_17310LUPUS LA PROTEIN-RELATED
Hgig_17311SERINE PROTEASE-RELATED
Hgig_17312
Hgig_17313
Hgig_17314
Hgig_17315
Hgig_17316
Hgig_17317ENDONUCLEASE-RELATED
Hgig_17318
Hgig_17319
Hgig_17320
Hgig_17321SLD5 PROTEIN
Hgig_17322SLD5 PROTEIN
Hgig_17323PIGGYBAC TRANSPOSABLE ELEMENT-DERIVED PROTEIN 4
Hgig_17324
Hgig_17325
Hgig_17326CELL DIVISION CYCLE 16,23,27
Hgig_17327UBIQUITIN
Hgig_17328
Hgig_17329TWINFILIN
Hgig_17330SET DOMAIN PROTEINS
Hgig_17331SET DOMAIN PROTEINS
Hgig_17332G-PROTEIN COUPLED RECEPTOR
Hgig_17333ENDO/EXONUCLEASE/PHOSPHATASE DOMAIN-CONTAINING PROTEIN
Hgig_17334
Hgig_17335
Hgig_17336
Hgig_17337
Hgig_17338SEC24-RELATED PROTEIN
Hgig_17339SEC24-RELATED PROTEIN
Hgig_17340FTP DOMAIN-CONTAINING PROTEIN
Hgig_17341
Hgig_17342ACYL-COA-BINDING DOMAIN-CONTAINING PROTEIN 5
Hgig_17343
Hgig_17344DEFECTIVE PROBOSCIS EXTENSION RESPONSE DPR -RELATED
Hgig_17345DEFECTIVE PROBOSCIS EXTENSION RESPONSE DPR -RELATED
Hgig_17346
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