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:0006031chitin biosynthetic processGOBiological Process5expanded2.01E-050.000239035
GO:0006600creatine metabolic processGOBiological Process5expanded2.01E-050.000239035
GO:0006924activation-induced cell death of T cellsGOBiological Process5expanded2.01E-050.000239035
GO:0010897negative regulation of triglyceride catabolic processGOBiological Process5expanded2.01E-050.000239035
GO:0031340positive regulation of vesicle fusionGOBiological Process5expanded2.01E-050.000239035
GO:0032071regulation of endodeoxyribonuclease activityGOBiological Process5expanded2.01E-050.000239035
GO:0044038cell wall macromolecule biosynthetic processGOBiological Process5expanded2.01E-050.000239035
GO:0046322negative regulation of fatty acid oxidationGOBiological Process5expanded2.01E-050.000239035
GO:0070589cellular component macromolecule biosynthetic processGOBiological Process5expanded2.01E-050.000239035
GO:1903719regulation of I-kappaB phosphorylationGOBiological Process5expanded2.01E-050.000239035
GO:1903721positive regulation of I-kappaB phosphorylationGOBiological Process5expanded2.01E-050.000239035
GO:1990009retinal cell apoptotic processGOBiological Process5expanded2.01E-050.000239035
GO:0033692cellular polysaccharide biosynthetic processGOBiological Process10expanded2.10E-050.000242277
GO:0007208phospholipase C-activating serotonin receptor signaling pathwayGOBiological Process4expanded2.12E-050.000242277
GO:0009793embryo development ending in seed dormancyGOBiological Process4expanded2.12E-050.000242277
GO:0010154fruit developmentGOBiological Process4expanded2.12E-050.000242277
GO:0010710regulation of collagen catabolic processGOBiological Process4expanded2.12E-050.000242277
GO:0019243methylglyoxal catabolic process to D-lactate via S-lactoyl-glutathioneGOBiological Process4expanded2.12E-050.000242277
GO:0048316seed developmentGOBiological Process4expanded2.12E-050.000242277
GO:0051596methylglyoxal catabolic processGOBiological Process4expanded2.12E-050.000242277
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