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:0031295T cell costimulationGOBiological Process10expanded1.85E-087.07E-07
GO:0098754detoxificationGOBiological Process17expanded1.87E-087.07E-07
GO:0099528G-protein coupled neurotransmitter receptor activityGOMolecular Function13expanded1.96E-082.70E-07
GO:0016401palmitoyl-CoA oxidase activityGOMolecular Function7expanded2.20E-082.93E-07
GO:0001820serotonin secretionGOBiological Process10expanded2.74E-081.01E-06
GO:0031294lymphocyte costimulationGOBiological Process10expanded2.74E-081.01E-06
GO:0032593insulin-responsive compartmentGOCellular Component8expanded2.84E-087.43E-07
GO:0042632cholesterol homeostasisGOBiological Process16expanded3.21E-081.15E-06
GO:0055092sterol homeostasisGOBiological Process16expanded3.21E-081.15E-06
GO:0060964regulation of gene silencing by miRNAGOBiological Process13expanded3.71E-081.32E-06
GO:0044550secondary metabolite biosynthetic processGOBiological Process12expanded3.81E-081.34E-06
GO:0035640exploration behaviorGOBiological Process11expanded4.34E-081.51E-06
GO:0051620norepinephrine uptakeGOBiological Process6expanded4.73E-081.60E-06
GO:0051621regulation of norepinephrine uptakeGOBiological Process6expanded4.73E-081.60E-06
GO:0014012peripheral nervous system axon regenerationGOBiological Process5expanded5.19E-081.72E-06
GO:0060739mesenchymal-epithelial cell signaling involved in prostate gland developmentGOBiological Process5expanded5.19E-081.72E-06
GO:0004930G-protein coupled receptor activityGOMolecular Function26expanded5.69E-087.31E-07
GO:0003997acyl-CoA oxidase activityGOMolecular Function7expanded5.84E-087.31E-07
GO:0040020regulation of meiotic nuclear divisionGOBiological Process13expanded5.88E-081.93E-06
GO:0004888transmembrane signaling receptor activityGOMolecular Function40expanded7.07E-088.60E-07
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