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/Redescription

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/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_16247HOMEOBOX PROTEIN ARISTALESS
Hgig_16248UNCHARACTERIZED
Hgig_16249
Hgig_16250CALCIUM BINDING PROTEINS
Hgig_16251ALDOSE-1-EPIMERASE
Hgig_16252DNAJ HOMOLOG SUBFAMILY C MEMBER 12
Hgig_16253
Hgig_16254POLYMYOSITIS/SCLERODERMA AUTOANTIGEN-RELATED
Hgig_16255TRANSLATION INITIATION FACTOR EIF3-RELATED
Hgig_16256TRANSLATION INITIATION FACTOR EIF3-RELATED
Hgig_16257
Hgig_16258NEUROLIGIN
Hgig_16259METHYLTRANSFERASE-RELATED
Hgig_16260FROUNT PROTEIN-RELATED
Hgig_16261PROTEIN DIAPHANOUS
Hgig_16262SKELETOR-RELATED
Hgig_16263
Hgig_16264
Hgig_16265
Hgig_16266
Hgig_16267NEUROPEPTIDE Y RECEPTOR
Hgig_16268NEUROPEPTIDE Y RECEPTOR
Hgig_16269
Hgig_16270TRANSIENT RECEPTOR POTENTIAL ION CHANNEL PROTEIN
Hgig_16271NEUROPEPTIDE Y RECEPTOR
Hgig_16272
Hgig_16273
Hgig_16274
Hgig_16275
Hgig_16276URIDINE KINASE
Hgig_16277
Hgig_16278
Hgig_16279U2 SMALL NUCLEAR RIBONUCLEOPROTEIN A
Hgig_16280REVERSE TRANSCRIPTASE DOMAIN-CONTAINING PROTEIN
Hgig_16281
Hgig_16282
Hgig_16283
Hgig_16284STAC
Hgig_16285STAC
Hgig_16286DNA2/NAM7 HELICASE FAMILY
Hgig_16287SYNAPTOTAGMIN 14, ISOFORM D
Hgig_16288BASIC HELIX-LOOP-HELIX PROTEIN NEUROGENIN-RELATED
Hgig_16289
Hgig_16290
Hgig_16291
Hgig_16292TRANSCRIPTION INITIATION FACTOR IIB-RELATED
Hgig_16293CODANIN-1
Hgig_16294CODANIN-1
Hgig_16295
Hgig_16296PHOSPHOSERINE AMINOTRANSFERASE
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