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:0052192movement in environment of other organism involved in symbiotic interactionGOBiological Process8expanded0.0030093060.014862187
GO:0042641actomyosinGOCellular Component7expanded0.0030189370.017586505
GO:0023061signal releaseGOBiological Process26expanded0.0030455540.015016344
GO:0019433triglyceride catabolic processGOBiological Process5expanded0.0030729390.015041523
GO:0032148activation of protein kinase B activityGOBiological Process5expanded0.0030729390.015041523
GO:0070231T cell apoptotic processGOBiological Process5expanded0.0030729390.015041523
GO:2001239regulation of extrinsic apoptotic signaling pathway in absence of ligandGOBiological Process5expanded0.0030729390.015041523
GO:0033353S-adenosylmethionine cycleGOBiological Process3expanded0.0030809150.015041523
GO:0071073positive regulation of phospholipid biosynthetic processGOBiological Process3expanded0.0030809150.015041523
GO:0005975carbohydrate metabolic processGOBiological Process39expanded0.0031170190.015192919
GO:0045907positive regulation of vasoconstrictionGOBiological Process6expanded0.0032319640.015727485
GO:0007041lysosomal transportGOBiological Process10expanded0.0032438390.015759562
GO:007188914-3-3 protein bindingGOMolecular Function5expanded0.0032445040.011915163
GO:0008237metallopeptidase activityGOMolecular Function12expanded0.0033589370.012229977
GO:0005782peroxisomal matrixGOCellular Component8expanded0.0033810840.019090119
GO:0031907microbody lumenGOCellular Component8expanded0.0033810840.019090119
GO:0016458gene silencingGOBiological Process17expanded0.0034464580.016716724
GO:0032885regulation of polysaccharide biosynthetic processGOBiological Process5expanded0.0035833320.017212687
GO:0048009insulin-like growth factor receptor signaling pathwayGOBiological Process5expanded0.0035833320.017212687
GO:0050999regulation of nitric-oxide synthase activityGOBiological Process5expanded0.0035833320.017212687
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