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:0090068positive regulation of cell cycle processGOBiological Process32expanded6.48E-093.11E-07
GO:0016138glycoside biosynthetic processGOBiological Process7expanded6.77E-093.11E-07
GO:1904069ascaroside metabolic processGOBiological Process7expanded6.77E-093.11E-07
GO:1904070ascaroside biosynthetic processGOBiological Process7expanded6.77E-093.11E-07
GO:0043436oxoacid metabolic processGOBiological Process70expanded7.63E-093.45E-07
GO:0008227G-protein coupled amine receptor activityGOMolecular Function13expanded7.68E-091.21E-07
GO:0008362chitin-based embryonic cuticle biosynthetic processGOBiological Process10expanded7.99E-093.56E-07
GO:0032891negative regulation of organic acid transportGOBiological Process11expanded8.18E-093.59E-07
GO:0008239dipeptidyl-peptidase activityGOMolecular Function8expanded8.93E-091.36E-07
GO:0006082organic acid metabolic processGOBiological Process70expanded1.02E-084.42E-07
GO:0004653polypeptide N-acetylgalactosaminyltransferase activityGOMolecular Function13expanded1.06E-081.56E-07
GO:0016051carbohydrate biosynthetic processGOBiological Process25expanded1.14E-084.85E-07
GO:0072749cellular response to cytochalasin BGOBiological Process6expanded1.22E-085.02E-07
GO:1901328response to cytochalasin BGOBiological Process6expanded1.22E-085.02E-07
GO:0015874norepinephrine transportGOBiological Process12expanded1.23E-085.02E-07
GO:0008276protein methyltransferase activityGOMolecular Function19expanded1.28E-081.82E-07
GO:0006631fatty acid metabolic processGOBiological Process36expanded1.45E-085.83E-07
GO:0051597response to methylmercuryGOBiological Process9expanded1.47E-085.85E-07
GO:0006766vitamin metabolic processGOBiological Process21expanded1.57E-086.08E-07
GO:0045787positive regulation of cell cycleGOBiological Process37expanded1.57E-086.08E-07
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