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:0098810neurotransmitter reuptakeGOBiological Process6expanded0.0002838420.002116751
GO:0005694chromosomeGOCellular Component55expanded0.0002853740.002251447
GO:0043209myelin sheathGOCellular Component17expanded0.0002883320.002251447
GO:0034097response to cytokineGOBiological Process37expanded0.0002981180.002217673
GO:0046349amino sugar biosynthetic processGOBiological Process5expanded0.00030440.002233543
GO:1901099negative regulation of signal transduction in absence of ligandGOBiological Process5expanded0.00030440.002233543
GO:2001240negative regulation of extrinsic apoptotic signaling pathway in absence of ligandGOBiological Process5expanded0.00030440.002233543
GO:0030814regulation of cAMP metabolic processGOBiological Process7expanded0.0003047440.002233543
GO:0030817regulation of cAMP biosynthetic processGOBiological Process7expanded0.0003047440.002233543
GO:0045761regulation of adenylate cyclase activityGOBiological Process7expanded0.0003047440.002233543
GO:0030203glycosaminoglycan metabolic processGOBiological Process14expanded0.0003126650.002285978
GO:0071437invadopodiumGOCellular Component5expanded0.0003165160.002393661
GO:0000307cyclin-dependent protein kinase holoenzyme complexGOCellular Component8expanded0.0003208140.002393661
GO:0030055cell-substrate junctionGOCellular Component15expanded0.0003261120.002393661
GO:0046903secretionGOBiological Process66expanded0.0003277960.002390746
GO:0097237cellular response to toxic substanceGOBiological Process19expanded0.0003305580.002405008
GO:0050870positive regulation of T cell activationGOBiological Process10expanded0.000336540.002441166
GO:0043542endothelial cell migrationGOBiological Process14expanded0.0003371640.002441166
GO:0003401axis elongationGOBiological Process6expanded0.0003507070.002514808
GO:0051953negative regulation of amine transportGOBiological Process6expanded0.0003507070.002514808
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