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:0010971positive regulation of G2/M transition of mitotic cell cycleGOBiological Process8expanded4.77E-067.23E-05
GO:0051412response to corticosteroneGOBiological Process8expanded4.77E-067.23E-05
GO:0032432actin filament bundleGOCellular Component11expanded4.81E-067.35E-05
GO:0035195gene silencing by miRNAGOBiological Process13expanded4.85E-067.31E-05
GO:0051785positive regulation of nuclear divisionGOBiological Process13expanded5.58E-068.36E-05
GO:0006034cuticle chitin metabolic processGOBiological Process5expanded5.81E-068.38E-05
GO:0006035cuticle chitin biosynthetic processGOBiological Process5expanded5.81E-068.38E-05
GO:0006038cell wall chitin biosynthetic processGOBiological Process5expanded5.81E-068.38E-05
GO:0032077positive regulation of deoxyribonuclease activityGOBiological Process5expanded5.81E-068.38E-05
GO:0032287peripheral nervous system myelin maintenanceGOBiological Process5expanded5.81E-068.38E-05
GO:0061744motor behaviorGOBiological Process5expanded5.81E-068.38E-05
GO:0071484cellular response to light intensityGOBiological Process5expanded5.81E-068.38E-05
GO:0072656maintenance of protein location in mitochondrionGOBiological Process5expanded5.81E-068.38E-05
GO:0001662behavioral fear responseGOBiological Process9expanded6.07E-068.70E-05
GO:0004100chitin synthase activityGOMolecular Function5expanded6.14E-064.09E-05
GO:0004994somatostatin receptor activityGOMolecular Function5expanded6.14E-064.09E-05
GO:0032026response to magnesium ionGOBiological Process8expanded6.31E-069.01E-05
GO:1901532regulation of hematopoietic progenitor cell differentiationGOBiological Process13expanded6.39E-069.08E-05
GO:0016741transferase activity, transferring one-carbon groupsGOMolecular Function22expanded6.65E-064.30E-05
GO:0004969histamine receptor activityGOMolecular Function6expanded6.68E-064.30E-05
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