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:0005200structural constituent of cytoskeletonGOMolecular Function9expanded0.0019031360.007437945
GO:0030574collagen catabolic processGOBiological Process4expanded0.0019450910.010492235
GO:0090110cargo loading into COPII-coated vesicleGOBiological Process4expanded0.0019450910.010492235
GO:2000243positive regulation of reproductive processGOBiological Process13expanded0.0019594960.010550861
GO:0060041retina development in camera-type eyeGOBiological Process14expanded0.0019733260.010606181
GO:0043414macromolecule methylationGOBiological Process19expanded0.001996520.010711544
GO:0006026aminoglycan catabolic processGOBiological Process9expanded0.0020498660.010958335
GO:0006029proteoglycan metabolic processGOBiological Process9expanded0.0020498660.010958335
GO:0044409entry into hostGOBiological Process8expanded0.0020663570.011007042
GO:0051828entry into other organism involved in symbiotic interactionGOBiological Process8expanded0.0020663570.011007042
GO:0006528asparagine metabolic processGOBiological Process3expanded0.0021085080.011191599
GO:0006768biotin metabolic processGOBiological Process3expanded0.0021085080.011191599
GO:0051378serotonin bindingGOMolecular Function4expanded0.0021216520.008169524
GO:0000737DNA catabolic process, endonucleolyticGOBiological Process7expanded0.002122310.011205045
GO:0006921cellular component disassembly involved in execution phase of apoptosisGOBiological Process7expanded0.002122310.011205045
GO:0030262apoptotic nuclear changesGOBiological Process7expanded0.002122310.011205045
GO:0005518collagen bindingGOMolecular Function6expanded0.0021286790.008169524
GO:0046581intercellular canaliculusGOCellular Component5expanded0.0021581340.012774759
GO:0014047glutamate secretionGOBiological Process6expanded0.0021952770.011457716
GO:0019369arachidonic acid metabolic processGOBiological Process6expanded0.0021952770.011457716
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