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:0010634positive regulation of epithelial cell migrationGOBiological Process9expanded0.0107215240.043476414
GO:0043271negative regulation of ion transportGOBiological Process11expanded0.0107270.043476414
GO:0008235metalloexopeptidase activityGOMolecular Function7expanded0.0108193120.034395722
GO:1903046meiotic cell cycle processGOBiological Process19expanded0.0110248410.044622933
GO:0032768regulation of monooxygenase activityGOBiological Process5expanded0.0111991370.045144629
GO:0035159regulation of tube length, open tracheal systemGOBiological Process5expanded0.0111991370.045144629
GO:0072595maintenance of protein localization in organelleGOBiological Process5expanded0.0111991370.045144629
GO:0048609multicellular organismal reproductive processGOBiological Process70expanded0.0114831890.046227195
GO:0006107oxaloacetate metabolic processGOBiological Process3expanded0.0117186390.046921743
GO:0006559L-phenylalanine catabolic processGOBiological Process3expanded0.0117186390.046921743
GO:0046655folic acid metabolic processGOBiological Process3expanded0.0117186390.046921743
GO:1902222erythrose 4-phosphate/phosphoenolpyruvate family amino acid catabolic processGOBiological Process3expanded0.0117186390.046921743
GO:0007565female pregnancyGOBiological Process10expanded0.0117932240.047093958
GO:0045834positive regulation of lipid metabolic processGOBiological Process10expanded0.0117932240.047093958
GO:0016627oxidoreductase activity, acting on the CH-CH group of donorsGOMolecular Function7expanded0.0118244130.037269042
GO:1904047S-adenosyl-L-methionine bindingGOMolecular Function3expanded0.0118980980.037269042
GO:0044773mitotic DNA damage checkpointGOBiological Process8expanded0.0119214490.047542355
GO:0042310vasoconstrictionGOBiological Process7expanded0.0119913970.047693784
GO:0046685response to arsenic-containing substanceGOBiological Process7expanded0.0119913970.047693784
GO:0010712regulation of collagen metabolic processGOBiological Process4expanded0.0121237430.047964356
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