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:1902175regulation of oxidative stress-induced intrinsic apoptotic signaling pathwayGOBiological Process5expanded0.0041518220.019381665
GO:1904407positive regulation of nitric oxide metabolic processGOBiological Process5expanded0.0041518220.019381665
GO:2000191regulation of fatty acid transportGOBiological Process5expanded0.0041518220.019381665
GO:0006073cellular glucan metabolic processGOBiological Process8expanded0.0042578140.019814446
GO:0044042glucan metabolic processGOBiological Process8expanded0.0042578140.019814446
GO:0046597negative regulation of viral entry into host cellGOBiological Process3expanded0.0042876120.019922035
GO:0031983vesicle lumenGOCellular Component20expanded0.0043176950.02365066
GO:0001948glycoprotein bindingGOMolecular Function7expanded0.0043543450.015587822
GO:0019953sexual reproductionGOBiological Process68expanded0.004482110.020793365
GO:0099589serotonin receptor activityGOMolecular Function4expanded0.0045693520.016212725
GO:0051721protein phosphatase 2A bindingGOMolecular Function5expanded0.0046050230.016212725
GO:0043255regulation of carbohydrate biosynthetic processGOBiological Process8expanded0.0046246290.021302968
GO:0002121inter-male aggressive behaviorGOBiological Process4expanded0.0046348060.021302968
GO:0006089lactate metabolic processGOBiological Process4expanded0.0046348060.021302968
GO:0007615anesthesia-resistant memoryGOBiological Process4expanded0.0046348060.021302968
GO:0019184nonribosomal peptide biosynthetic processGOBiological Process4expanded0.0046348060.021302968
GO:1900117regulation of execution phase of apoptosisGOBiological Process4expanded0.0046348060.021302968
GO:0097305response to alcoholGOBiological Process30expanded0.0047601860.021777684
GO:0007427epithelial cell migration, open tracheal systemGOBiological Process5expanded0.0047818920.021777684
GO:0045600positive regulation of fat cell differentiationGOBiological Process5expanded0.0047818920.021777684
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