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:0060711labyrinthine layer developmentGOBiological Process6expanded0.0021952770.011457716
GO:0009374biotin bindingGOMolecular Function3expanded0.002210870.008409203
GO:0010962regulation of glucan biosynthetic processGOBiological Process5expanded0.0022124190.011457716
GO:0016318ommatidial rotationGOBiological Process5expanded0.0022124190.011457716
GO:0030195negative regulation of blood coagulationGOBiological Process5expanded0.0022124190.011457716
GO:0032369negative regulation of lipid transportGOBiological Process5expanded0.0022124190.011457716
GO:0043243positive regulation of protein complex disassemblyGOBiological Process5expanded0.0022124190.011457716
GO:0045742positive regulation of epidermal growth factor receptor signaling pathwayGOBiological Process5expanded0.0022124190.011457716
GO:0090199regulation of release of cytochrome c from mitochondriaGOBiological Process5expanded0.0022124190.011457716
GO:1900047negative regulation of hemostasisGOBiological Process5expanded0.0022124190.011457716
GO:0007276gamete generationGOBiological Process61expanded0.0022182430.011467973
GO:0009611response to woundingGOBiological Process37expanded0.0022265360.011490929
GO:0014070response to organic cyclic compoundGOBiological Process49expanded0.0022672560.01166845
GO:0015850organic hydroxy compound transportGOBiological Process19expanded0.0022750610.01166845
GO:0007595lactationGOBiological Process8expanded0.002276580.01166845
GO:0043535regulation of blood vessel endothelial cell migrationGOBiological Process8expanded0.002276580.01166845
GO:0035296regulation of tube diameterGOBiological Process12expanded0.0022940330.011737738
GO:0002244hematopoietic progenitor cell differentiationGOBiological Process13expanded0.0023460550.01198336
GO:0022409positive regulation of cell-cell adhesionGOBiological Process10expanded0.0024226590.01235349
GO:0045776negative regulation of blood pressureGOBiological Process6expanded0.0025078750.012766197
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