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:0033559unsaturated fatty acid metabolic processGOBiological Process28expanded1.65E-164.05E-14
GO:0006311meiotic gene conversionGOBiological Process13expanded2.03E-164.05E-14
GO:0098760response to interleukin-7GOBiological Process13expanded2.03E-164.05E-14
GO:0098761cellular response to interleukin-7GOBiological Process13expanded2.03E-164.05E-14
GO:0097433dense bodyGOCellular Component15expanded3.71E-163.41E-14
GO:0010520regulation of reciprocal meiotic recombinationGOBiological Process13expanded7.09E-161.32E-13
GO:0036093germ cell proliferationGOBiological Process15expanded1.30E-152.29E-13
GO:0031491nucleosome bindingGOMolecular Function21expanded1.97E-151.20E-13
GO:0000183chromatin silencing at rDNAGOBiological Process13expanded2.18E-153.25E-13
GO:0006335DNA replication-dependent nucleosome assemblyGOBiological Process13expanded2.18E-153.25E-13
GO:0034723DNA replication-dependent nucleosome organizationGOBiological Process13expanded2.18E-153.25E-13
GO:0001516prostaglandin biosynthetic processGOBiological Process15expanded5.46E-157.19E-13
GO:0046457prostanoid biosynthetic processGOBiological Process15expanded5.46E-157.19E-13
GO:0016584nucleosome positioningGOBiological Process13expanded6.02E-157.19E-13
GO:0035822gene conversionGOBiological Process13expanded6.02E-157.19E-13
GO:0060903positive regulation of meiosis IGOBiological Process13expanded6.02E-157.19E-13
GO:0044454nuclear chromosome partGOCellular Component54expanded1.13E-148.27E-13
GO:0070141response to UV-AGOBiological Process13expanded1.53E-141.76E-12
GO:0071824protein-DNA complex subunit organizationGOBiological Process35expanded2.33E-142.57E-12
GO:0000786nucleosomeGOCellular Component21expanded2.49E-141.52E-12
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