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:0008061chitin bindingGOMolecular Function58expanded2.50E-621.06E-59
GO:0000784nuclear chromosome, telomeric regionGOCellular Component31expanded8.19E-243.01E-21
GO:0008144drug bindingGOMolecular Function83expanded9.17E-241.95E-21
GO:0031497chromatin assemblyGOBiological Process34expanded3.05E-239.09E-20
GO:0034728nucleosome organizationGOBiological Process35expanded1.34E-211.99E-18
GO:0006333chromatin assembly or disassemblyGOBiological Process34expanded1.11E-201.10E-17
GO:0031492nucleosomal DNA bindingGOMolecular Function21expanded8.35E-201.19E-17
GO:0000781chromosome, telomeric regionGOCellular Component31expanded1.02E-191.88E-17
GO:0004667prostaglandin-D synthase activityGOMolecular Function15expanded1.05E-181.12E-16
GO:2000255negative regulation of male germ cell proliferationGOBiological Process15expanded1.45E-181.08E-15
GO:2000254regulation of male germ cell proliferationGOBiological Process15expanded4.93E-182.94E-15
GO:0006690icosanoid metabolic processGOBiological Process28expanded9.22E-184.58E-15
GO:0006692prostanoid metabolic processGOBiological Process22expanded1.34E-174.99E-15
GO:0006693prostaglandin metabolic processGOBiological Process22expanded1.34E-174.99E-15
GO:0035059RCAF complexGOCellular Component13expanded2.19E-172.68E-15
GO:0002176male germ cell proliferationGOBiological Process15expanded4.18E-171.34E-14
GO:0010845positive regulation of reciprocal meiotic recombinationGOBiological Process13expanded4.94E-171.34E-14
GO:0038111interleukin-7-mediated signaling pathwayGOBiological Process13expanded4.94E-171.34E-14
GO:0010844recombination hotspot bindingGOMolecular Function13expanded8.79E-176.76E-15
GO:0004984olfactory receptor activityGOMolecular Function14expanded9.52E-176.76E-15
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