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:0000038very long-chain fatty acid metabolic processGOBiological Process7expanded0.0005775820.003837252
GO:0007623circadian rhythmGOBiological Process20expanded0.0005791390.003839046
GO:0018022peptidyl-lysine methylationGOBiological Process13expanded0.0005827010.003854094
GO:0008188neuropeptide receptor activityGOMolecular Function10expanded0.0005867340.002474739
GO:0007198adenylate cyclase-inhibiting serotonin receptor signaling pathwayGOBiological Process4expanded0.0005913420.003885405
GO:0060242contact inhibitionGOBiological Process4expanded0.0005913420.003885405
GO:0071850mitotic cell cycle arrestGOBiological Process4expanded0.0005913420.003885405
GO:0044819mitotic G1/S transition checkpointGOBiological Process8expanded0.0006116420.003992404
GO:0097421liver regenerationGOBiological Process8expanded0.0006116420.003992404
GO:1903078positive regulation of protein localization to plasma membraneGOBiological Process8expanded0.0006116420.003992404
GO:0045766positive regulation of angiogenesisGOBiological Process11expanded0.0006181510.004026079
GO:0034695response to prostaglandin EGOBiological Process5expanded0.0006628770.00430798
GO:0043325phosphatidylinositol-3,4-bisphosphate bindingGOMolecular Function5expanded0.0006650210.002754553
GO:0004067asparaginase activityGOMolecular Function3expanded0.0006724730.002754553
GO:0005138interleukin-6 receptor bindingGOMolecular Function3expanded0.0006724730.002754553
GO:0030072peptide hormone secretionGOBiological Process17expanded0.0006983160.004528425
GO:0007283spermatogenesisGOBiological Process33expanded0.0007075070.004578074
GO:0030863cortical cytoskeletonGOCellular Component10expanded0.0007347020.005087464
GO:0014061regulation of norepinephrine secretionGOBiological Process6expanded0.0007494430.004828484
GO:0071276cellular response to cadmium ionGOBiological Process6expanded0.0007494430.004828484
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