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

Key Reference Paper

1. Birstein J A, Vinogradov M E. Pelagicheskie gammaridy (Amphipoda, Gammaridea) Kurilo-Kamchatskoi Vpadiny[J]. Akademiya Nauk SSSR, Trudy Instituta Okeanologii, 1955, 12: 219-257. (Birstein et al., 1955)

Distribution

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_09637IMMUNOGLOBULIN-BINDING PROTEIN 1
Hgig_09638RALA BINDING PROTEIN 1 RALBP1
Hgig_09639SUCCINATE DEHYDROGENASE
Hgig_09640SERINE PROTEASE-RELATED
Hgig_09641-
Hgig_09642SERINE PROTEASE-RELATED
Hgig_09643PHYTOENE DEHYDROGENASE
Hgig_09644UPF0692 PROTEIN C19ORF54
Hgig_09645PHYTOENE DEHYDROGENASE
Hgig_09646-
Hgig_09647-
Hgig_09648-
Hgig_09649-
Hgig_09650LOW-DENSITY LIPOPROTEIN RECEPTOR-RELATED
Hgig_09651REVERSE TRANSCRIPTASE
Hgig_09652N4BP1-RELATED
Hgig_09653RHO/RAC/CDC GTPASE-ACTIVATING PROTEIN
Hgig_09654-
Hgig_09655-
Hgig_09656F5/8 TYPE C DOMAIN-CONTAINING PROTEIN
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