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:1900119positive regulation of execution phase of apoptosisGOBiological Process4expanded0.0011309830.006760969
GO:0006171cAMP biosynthetic processGOBiological Process7expanded0.0011587930.006899557
GO:0051339regulation of lyase activityGOBiological Process7expanded0.0011587930.006899557
GO:0002791regulation of peptide secretionGOBiological Process22expanded0.0011659780.006928511
GO:0032940secretion by cellGOBiological Process58expanded0.0012208770.007240311
GO:0010374stomatal complex developmentGOBiological Process2expanded0.0012303780.007267755
GO:0090558plant epidermis developmentGOBiological Process2expanded0.0012303780.007267755
GO:0010631epithelial cell migrationGOBiological Process23expanded0.0012622490.007383758
GO:0016053organic acid biosynthetic processGOBiological Process23expanded0.0012622490.007383758
GO:0046394carboxylic acid biosynthetic processGOBiological Process23expanded0.0012622490.007383758
GO:0008395steroid hydroxylase activityGOMolecular Function6expanded0.0012677670.00514351
GO:0001893maternal placenta developmentGOBiological Process5expanded0.0012698180.007383758
GO:0009642response to light intensityGOBiological Process5expanded0.0012698180.007383758
GO:0034694response to prostaglandinGOBiological Process5expanded0.0012698180.007383758
GO:0045465R8 cell differentiationGOBiological Process5expanded0.0012698180.007383758
GO:1903960negative regulation of anion transmembrane transportGOBiological Process5expanded0.0012698180.007383758
GO:0043603cellular amide metabolic processGOBiological Process57expanded0.0012761910.007406378
GO:0004064arylesterase activityGOMolecular Function3expanded0.0013034690.00523847
GO:0044789modulation by host of viral release from host cellGOBiological Process3expanded0.0013528890.007821062
GO:0044791positive regulation by host of viral release from host cellGOBiological Process3expanded0.0013528890.007821062
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