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:1902806regulation of cell cycle G1/S phase transitionGOBiological Process14expanded0.0009549470.005909974
GO:0005615extracellular spaceGOCellular Component38expanded0.0009597850.006290017
GO:0016571histone methylationGOBiological Process13expanded0.0009612540.005936691
GO:0022411cellular component disassemblyGOBiological Process29expanded0.0010014330.006172058
GO:0006309apoptotic DNA fragmentationGOBiological Process7expanded0.0010162280.006237464
GO:1900543negative regulation of purine nucleotide metabolic processGOBiological Process7expanded0.0010162280.006237464
GO:1904018positive regulation of vasculature developmentGOBiological Process11expanded0.001021120.006254619
GO:0042127regulation of cell proliferationGOBiological Process58expanded0.0010257170.006260449
GO:0010762regulation of fibroblast migrationGOBiological Process5expanded0.0010346630.006260449
GO:0014044Schwann cell developmentGOBiological Process5expanded0.0010346630.006260449
GO:0030252growth hormone secretionGOBiological Process5expanded0.0010346630.006260449
GO:0055070copper ion homeostasisGOBiological Process5expanded0.0010346630.006260449
GO:0090344negative regulation of cell agingGOBiological Process5expanded0.0010346630.006260449
GO:0001725stress fiberGOCellular Component7expanded0.0010901670.006898124
GO:0097517contractile actin filament bundleGOCellular Component7expanded0.0010901670.006898124
GO:0030033microvillus assemblyGOBiological Process4expanded0.0011309830.006760969
GO:0045713low-density lipoprotein particle receptor biosynthetic processGOBiological Process4expanded0.0011309830.006760969
GO:0045714regulation of low-density lipoprotein particle receptor biosynthetic processGOBiological Process4expanded0.0011309830.006760969
GO:0046185aldehyde catabolic processGOBiological Process4expanded0.0011309830.006760969
GO:0061687detoxification of inorganic compoundGOBiological Process4expanded0.0011309830.006760969
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