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_01276LD33804P
Hgig_01277CARBOHYDRATE SULFOTRANSFERASE
Hgig_01278GLYCINE CLEAVAGE SYSTEM H PROTEIN
Hgig_01279UPF0696 PROTEIN C11ORF68
Hgig_01280-
Hgig_01281-
Hgig_01282REVERSE TRANSCRIPTASE DOMAIN-CONTAINING PROTEIN
Hgig_01283PROSTATE APOPTOSIS RESPONSE PROTEIN PAR-4
Hgig_01284TRANSPOSABLE ELEMENT-RELATED
Hgig_01285XANTHINE DEHYDROGENASE
Hgig_01286D-ALANYL-D-ALANINE CARBOXYPEPTIDASE
Hgig_01287-
Hgig_01288RAI16 PROTEIN-RELATED
Hgig_01289-
Hgig_01290-
Hgig_01291CUE DOMAIN CONTAINING PROTEIN 1
Hgig_01292CUE DOMAIN CONTAINING PROTEIN 1
Hgig_01293-
Hgig_01294SUPEROXIDE DISMUTASE 2
Hgig_01295NINJURIN-RELATED
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