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_26719-
Hgig_26720ATP-DEPENDENT RNA HELICASE DBP3
Hgig_26721EF-HAND AND COILED-COIL DOMAIN-CONTAINING FAMILY MEMBER
Hgig_26722-
Hgig_26723ZINC FINGER PROTEIN
Hgig_26724ZINC FINGER PROTEIN
Hgig_26725-
Hgig_26726ZINC FINGER PROTEIN
Hgig_26727PHAGE_INTEGRASE DOMAIN-CONTAINING PROTEIN
Hgig_26728-
Hgig_26729-
Hgig_26730ZINC FINGER PROTEIN
Hgig_26731TRANSPOSABLE ELEMENT TC3 TRANSPOSASE-LIKE PROTEIN
Hgig_26732UNCHARACTERIZED
Hgig_26733-
Hgig_26734UNCHARACTERIZED
Hgig_26735-
Hgig_26736NADP-SPECIFIC ISOCITRATE DEHYDROGENASE
Hgig_26737NADP-SPECIFIC ISOCITRATE DEHYDROGENASE
Hgig_26738RIBOSOMAL PROTEIN L5-RELATED
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