About Lindaspio polybranchiata

Lindaspio polybranchiata is a species of polychaete worm in the family Spionidae. It is known for its unique multiple branchial filaments, which aid in respiration and feeding. This species is typically found in deep-sea environments, often inhabiting soft sediments where it constructs burrows. Like other spionids, it uses its specialized palps to collect organic particles from the surrounding water and sediment, serving as a deposit feeder. Its adaptations to low-oxygen environments and its role in benthic ecosystems make it an important species for studying deep-sea biodiversity and ecological processes.

Classification

Animalia (Kingdom); Annelida (Phylum); Polychaeta (Class); Sedentaria (Subclass); Canalipalpata (Infraclass); Spionida (Order); Spioniformia (Suborder); Spionidae (Family); Lindaspio (Genus); Lindaspio polybranchiata (Species)

Original Name

Lindaspio polybranchiata Sui, Dong, Wu & Li, 2023

Key Reference Paper

1. Sui J, Dong D, Wu X, et al.  A new species of the genus Lindaspio Blake & Maciolek, 1992 (Annelida, Spionidae) from a cold seep near Hainan Island, China[J]. ZooKeys, 2023, 1153: 105. (Sui et al., 2023)

Description

Total length 55 mm, maximum width 4 mm, including chaetae. More than 350 crowded chaetigers. Color pale in alcohol. Prostomium incised, developed into two frontal lobes or weak horns; caruncle present or absent; occipital tentacle absent. Peristomial wings absent. Notopodia of chaetigers 2–4 with fascicles of heavy spines. Anterior neuropodial spines present. Dorsal branchiae starting from chaetiger 2; ventral branchiae starting from an anterior segment, branchiae closely associated with parapodial lamellae, continuing to posterior end. Chaetiger 1 reduced, with notopodia reduced to single lamellae lacking notochaetae. Following notopodia and neuropodia with capillaries and hooded hooks. Pygidium simple, conical, lacking cirri.

Etymology

The species is so named because it has more neuropodial branchiae than the congeners.

Distribution

Lingshui cold seep cruise, Faxian Dive 252, 1758 m, 17°37'N, 111°03'E, coll. crew of R/V Kexue


Basic Information
SpeciesPhylumCommon NameEcosystemDepthHabitatNCBI Taxonomy ID
Lindaspio polybranchiataAnnelida-Cold seep1,700Lingshui Cold Seep3032291

Genome Assembly Information
Genome AssemblyGenome SizeAssembly levelReleased yearWGS accessionSubmitterBioProjectBUSCO completeness (%)Scaffold/Contig N50 (kb)GC content (%)Repeat Rate (%)Gene Number
-1.66GbContig2025--PRJNA118820790.10 ---27,746

References
TitleJournalPubmed ID
Degenerated vision, altered lipid metabolism, and expanded chemoreceptor repertoires enable Lindaspio polybranchiata to thrive in deep-sea cold seepsBMC Biology39806408

Results of comparison between Lindaspio polybranchiata and its nearshore relatives from the paper (Yan et al., 2025)

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Annotation IDDescriptionTypeSubtypeGeneRatioEvolution TypeP-valueQ-value
GO:0015812gamma-aminobutyric acid transportGOBiological Process6expanded0.0001410760.001202367
GO:0090493catecholamine uptakeGOBiological Process6expanded0.0001410760.001202367
GO:0060968regulation of gene silencingGOBiological Process13expanded0.0001435010.001219557
GO:0010165response to X-rayGOBiological Process8expanded0.0001468730.001244662
GO:1904724tertiary granule lumenGOCellular Component8expanded0.0001509610.001333458
GO:0005788endoplasmic reticulum lumenGOCellular Component18expanded0.0001526030.001333458
GO:0000790nuclear chromatinGOCellular Component25expanded0.0001571610.001341347
GO:0010273detoxification of copper ionGOBiological Process4expanded0.0001636920.001332978
GO:0019853L-ascorbic acid biosynthetic processGOBiological Process4expanded0.0001636920.001332978
GO:0031117positive regulation of microtubule depolymerizationGOBiological Process4expanded0.0001636920.001332978
GO:0050787detoxification of mercury ionGOBiological Process4expanded0.0001636920.001332978
GO:0010763positive regulation of fibroblast migrationGOBiological Process5expanded0.0001644440.001332978
GO:0022011myelination in peripheral nervous systemGOBiological Process5expanded0.0001644440.001332978
GO:0032069regulation of nuclease activityGOBiological Process5expanded0.0001644440.001332978
GO:0032292peripheral nervous system axon ensheathmentGOBiological Process5expanded0.0001644440.001332978
GO:0035158regulation of tube diameter, open tracheal systemGOBiological Process5expanded0.0001644440.001332978
GO:0042730fibrinolysisGOBiological Process5expanded0.0001644440.001332978
GO:0051917regulation of fibrinolysisGOBiological Process5expanded0.0001644440.001332978
GO:0071379cellular response to prostaglandin stimulusGOBiological Process5expanded0.0001644440.001332978
GO:1901881positive regulation of protein depolymerizationGOBiological Process5expanded0.0001644440.001332978
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