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:0098603selenol Se-methyltransferase activityGOMolecular Function3expanded7.16E-050.000367536
GO:0031099regenerationGOBiological Process22expanded7.38E-050.000674858
GO:0040003chitin-based cuticle developmentGOBiological Process10expanded7.97E-050.000719839
GO:0015911plasma membrane long-chain fatty acid transportGOBiological Process5expanded7.99E-050.000719839
GO:0031657regulation of cyclin-dependent protein serine/threonine kinase activity involved in G1/S transition of mitotic cell cycleGOBiological Process5expanded7.99E-050.000719839
GO:0032770positive regulation of monooxygenase activityGOBiological Process5expanded7.99E-050.000719839
GO:2001275positive regulation of glucose import in response to insulin stimulusGOBiological Process5expanded7.99E-050.000719839
GO:1904375regulation of protein localization to cell peripheryGOBiological Process13expanded8.12E-050.000729504
GO:0044289contact siteGOCellular Component3expanded8.16E-050.000880316
GO:0007050cell cycle arrestGOBiological Process17expanded8.20E-050.000734264
GO:0010039response to iron ionGOBiological Process9expanded8.23E-050.000735015
GO:0051934catecholamine uptake involved in synaptic transmissionGOBiological Process6expanded8.30E-050.000736808
GO:0060706cell differentiation involved in embryonic placenta developmentGOBiological Process6expanded8.30E-050.000736808
GO:0030857negative regulation of epithelial cell differentiationGOBiological Process8expanded8.81E-050.000780224
GO:0003995acyl-CoA dehydrogenase activityGOMolecular Function7expanded8.81E-050.000446607
GO:0008528G-protein coupled peptide receptor activityGOMolecular Function13expanded9.10E-050.000456119
GO:0038037G-protein coupled receptor dimeric complexGOCellular Component5expanded9.30E-050.000948456
GO:0097648G-protein coupled receptor complexGOCellular Component5expanded9.30E-050.000948456
GO:0009438methylglyoxal metabolic processGOBiological Process4expanded9.35E-050.00082296
GO:1990170stress response to cadmium ionGOBiological Process4expanded9.35E-050.00082296
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