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:0035641locomotory exploration behaviorGOBiological Process7expanded2.16E-063.77E-05
GO:0070011peptidase activity, acting on L-amino acid peptidesGOMolecular Function34expanded2.33E-061.78E-05
GO:0044427chromosomal partGOCellular Component55expanded2.36E-064.56E-05
GO:0003796lysozyme activityGOMolecular Function5expanded2.38E-061.78E-05
GO:0004322ferroxidase activityGOMolecular Function5expanded2.38E-061.78E-05
GO:0016724oxidoreductase activity, oxidizing metal ions, oxygen as acceptorGOMolecular Function5expanded2.38E-061.78E-05
GO:0030235nitric-oxide synthase regulator activityGOMolecular Function5expanded2.38E-061.78E-05
GO:0001676long-chain fatty acid metabolic processGOBiological Process15expanded2.40E-064.16E-05
GO:0014052regulation of gamma-aminobutyric acid secretionGOBiological Process6expanded2.50E-064.30E-05
GO:0008628hormone-mediated apoptotic signaling pathwayGOBiological Process5expanded2.66E-064.34E-05
GO:0010746regulation of plasma membrane long-chain fatty acid transportGOBiological Process5expanded2.66E-064.34E-05
GO:0032079positive regulation of endodeoxyribonuclease activityGOBiological Process5expanded2.66E-064.34E-05
GO:0033212iron assimilationGOBiological Process5expanded2.66E-064.34E-05
GO:0035655interleukin-18-mediated signaling pathwayGOBiological Process5expanded2.66E-064.34E-05
GO:0038169somatostatin receptor signaling pathwayGOBiological Process5expanded2.66E-064.34E-05
GO:0038170somatostatin signaling pathwayGOBiological Process5expanded2.66E-064.34E-05
GO:0070673response to interleukin-18GOBiological Process5expanded2.66E-064.34E-05
GO:0071351cellular response to interleukin-18GOBiological Process5expanded2.66E-064.34E-05
GO:1990418response to insulin-like growth factor stimulusGOBiological Process5expanded2.66E-064.34E-05
GO:0031906late endosome lumenGOCellular Component5expanded2.96E-065.43E-05
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