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:0004416hydroxyacylglutathione hydrolase activityGOMolecular Function4expanded2.96E-062.15E-05
GO:0016279protein-lysine N-methyltransferase activityGOMolecular Function13expanded2.97E-062.15E-05
GO:0007608sensory perception of smellGOBiological Process14expanded3.02E-064.88E-05
GO:0044273sulfur compound catabolic processGOBiological Process12expanded3.02E-064.88E-05
GO:0055088lipid homeostasisGOBiological Process19expanded3.07E-064.92E-05
GO:0070064proline-rich region bindingGOMolecular Function8expanded3.41E-062.42E-05
GO:0009593detection of chemical stimulusGOBiological Process14expanded3.45E-065.51E-05
GO:0097516microvillar actin bundleGOCellular Component4expanded3.52E-065.62E-05
GO:0097518parallel actin filament bundleGOCellular Component4expanded3.52E-065.62E-05
GO:0098859actin filament bundle of actin-based cell projectionGOCellular Component4expanded3.52E-065.62E-05
GO:0008376acetylgalactosaminyltransferase activityGOMolecular Function13expanded3.54E-062.43E-05
GO:0016278lysine N-methyltransferase activityGOMolecular Function13expanded3.54E-062.43E-05
GO:0051048negative regulation of secretionGOBiological Process20expanded3.66E-065.81E-05
GO:0050906detection of stimulus involved in sensory perceptionGOBiological Process15expanded3.93E-066.20E-05
GO:0006022aminoglycan metabolic processGOBiological Process19expanded4.05E-066.37E-05
GO:1903792negative regulation of anion transportGOBiological Process11expanded4.38E-066.84E-05
GO:0006790sulfur compound metabolic processGOBiological Process32expanded4.42E-066.84E-05
GO:1901570fatty acid derivative biosynthetic processGOBiological Process15expanded4.43E-066.84E-05
GO:1903510mucopolysaccharide metabolic processGOBiological Process14expanded4.48E-066.89E-05
GO:1902001fatty acid transmembrane transportGOBiological Process7expanded4.70E-067.18E-05
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