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:0061074regulation of neural retina developmentGOBiological Process8expanded2.90E-076.94E-06
GO:0010716negative regulation of extracellular matrix disassemblyGOBiological Process5expanded3.02E-076.94E-06
GO:0010748negative regulation of plasma membrane long-chain fatty acid transportGOBiological Process5expanded3.02E-076.94E-06
GO:0033215iron assimilation by reduction and transportGOBiological Process5expanded3.02E-076.94E-06
GO:0036343psychomotor behaviorGOBiological Process5expanded3.02E-076.94E-06
GO:0060709glycogen cell differentiation involved in embryonic placenta developmentGOBiological Process5expanded3.02E-076.94E-06
GO:0071486cellular response to high light intensityGOBiological Process5expanded3.02E-076.94E-06
GO:0097473retinal rod cell apoptotic processGOBiological Process5expanded3.02E-076.94E-06
GO:0008757S-adenosylmethionine-dependent methyltransferase activityGOMolecular Function22expanded3.10E-073.00E-06
GO:0036109alpha-linolenic acid metabolic processGOBiological Process7expanded3.12E-077.10E-06
GO:0043901negative regulation of multi-organism processGOBiological Process20expanded3.19E-077.22E-06
GO:0014050negative regulation of glutamate secretionGOBiological Process6expanded3.34E-077.49E-06
GO:0019752carboxylic acid metabolic processGOBiological Process61expanded3.37E-077.49E-06
GO:0060966regulation of gene silencing by RNAGOBiological Process13expanded3.69E-078.16E-06
GO:0035194posttranscriptional gene silencing by RNAGOBiological Process17expanded4.13E-079.06E-06
GO:0071157negative regulation of cell cycle arrestGOBiological Process8expanded4.41E-079.52E-06
GO:1902866regulation of retina development in camera-type eyeGOBiological Process8expanded4.41E-079.52E-06
GO:1904377positive regulation of protein localization to cell peripheryGOBiological Process13expanded4.44E-079.52E-06
GO:0098687chromosomal regionGOCellular Component31expanded5.00E-071.15E-05
GO:0015844monoamine transportGOBiological Process16expanded5.16E-071.10E-05
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