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:1900078positive regulation of cellular response to insulin stimulusGOBiological Process5expanded0.0089748210.037183182
GO:0006493protein O-linked glycosylationGOBiological Process8expanded0.0091158260.037714991
GO:1904397negative regulation of neuromuscular junction developmentGOBiological Process6expanded0.0093636510.038686664
GO:0042590antigen processing and presentation of exogenous peptide antigen via MHC class IGOBiological Process3expanded0.0094498550.03893497
GO:0046498S-adenosylhomocysteine metabolic processGOBiological Process3expanded0.0094498550.03893497
GO:0003407neural retina developmentGOBiological Process8expanded0.0097654680.040179852
GO:0008226tyramine receptor activityGOMolecular Function2expanded0.0098124130.031429232
GO:0019202amino acid kinase activityGOMolecular Function2expanded0.0098124130.031429232
GO:1990698palmitoleoyltransferase activityGOMolecular Function2expanded0.0098124130.031429232
GO:1901564organonitrogen compound metabolic processGOBiological Process165expanded0.0098446150.040449705
GO:0007034vacuolar transportGOBiological Process10expanded0.0100212480.040933916
GO:0009250glucan biosynthetic processGOBiological Process5expanded0.0100447960.040933916
GO:0010884positive regulation of lipid storageGOBiological Process5expanded0.0100447960.040933916
GO:0010907positive regulation of glucose metabolic processGOBiological Process5expanded0.0100447960.040933916
GO:0051220cytoplasmic sequestering of proteinGOBiological Process5expanded0.0100447960.040933916
GO:1904263positive regulation of TORC1 signalingGOBiological Process5expanded0.0100447960.040933916
GO:0044703multi-organism reproductive processGOBiological Process73expanded0.0101664830.041373288
GO:1903201regulation of oxidative stress-induced cell deathGOBiological Process7expanded0.0103211380.041945441
GO:0030870Mre11 complexGOCellular Component2expanded0.0106697720.053641181
GO:0072534perineuronal netGOCellular Component2expanded0.0106697720.053641181
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