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:0031490chromatin DNA bindingGOMolecular Function21expanded4.29E-111.22E-09
GO:0061582intestinal epithelial cell migrationGOBiological Process9expanded4.59E-113.61E-09
GO:0097179protease inhibitor complexGOCellular Component11expanded5.04E-111.68E-09
GO:1904090peptidase inhibitor complexGOCellular Component11expanded5.04E-111.68E-09
GO:0004252serine-type endopeptidase activityGOMolecular Function21expanded5.41E-111.44E-09
GO:0006636unsaturated fatty acid biosynthetic processGOBiological Process15expanded5.86E-114.48E-09
GO:0032787monocarboxylic acid metabolic processGOBiological Process52expanded6.03E-114.50E-09
GO:1904029regulation of cyclin-dependent protein kinase activityGOBiological Process20expanded7.00E-115.06E-09
GO:0045911positive regulation of DNA recombinationGOBiological Process13expanded7.12E-115.06E-09
GO:0006767water-soluble vitamin metabolic processGOBiological Process20expanded8.57E-115.95E-09
GO:0005576extracellular regionGOCellular Component85expanded1.42E-104.34E-09
GO:0046456icosanoid biosynthetic processGOBiological Process15expanded1.51E-101.03E-08
GO:0000788nuclear nucleosomeGOCellular Component13expanded1.64E-104.64E-09
GO:0016775phosphotransferase activity, nitrogenous group as acceptorGOMolecular Function7expanded2.04E-104.95E-09
GO:0003943N-acetylgalactosamine-4-sulfatase activityGOMolecular Function9expanded2.09E-104.95E-09
GO:0050907detection of chemical stimulus involved in sensory perceptionGOBiological Process14expanded2.83E-101.87E-08
GO:0006749glutathione metabolic processGOBiological Process17expanded2.88E-101.87E-08
GO:0000320re-entry into mitotic cell cycleGOBiological Process8expanded3.20E-102.03E-08
GO:0017171serine hydrolase activityGOMolecular Function23expanded3.34E-107.48E-09
GO:0051290protein heterotetramerizationGOBiological Process13expanded3.45E-102.15E-08
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