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_0003660S RIBOSOMAL PROTEIN L35A
Hgig_00037TRANSCRIPTASE, PUTATIVE-RELATED-RELATED
Hgig_00038CHARGED MULTIVESICULAR BODY PROTEIN
Hgig_00039-
Hgig_00040SIMILAR TO 1700123O20RIK PROTEIN
Hgig_00041SIMILAR TO 1700123O20RIK PROTEIN
Hgig_00042MAP/MICROTUBULE AFFINITY-REGULATING KINASE
Hgig_00043-
Hgig_00044SPLICING FACTOR 3A SUBUNIT 2
Hgig_00045TRANSPOSABLE ELEMENT-RELATED
Hgig_00046-
Hgig_00047-
Hgig_00048CHARGED MULTIVESICULAR BODY PROTEIN
Hgig_00049-
Hgig_00050-
Hgig_00051-
Hgig_00052SOX TRANSCRIPTION FACTOR
Hgig_00053RAS-RELATED GTP BINDING RAG/GTR YEAST
Hgig_00054REVERSE TRANSCRIPTASE
Hgig_00055-
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