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:0006027glycosaminoglycan catabolic processGOBiological Process9expanded0.0004605930.003173092
GO:0044070regulation of anion transportGOBiological Process16expanded0.0004825660.003316811
GO:0030165PDZ domain bindingGOMolecular Function12expanded0.0004920780.002139035
GO:0042923neuropeptide bindingGOMolecular Function5expanded0.0004971030.002139051
GO:0044281small molecule metabolic processGOBiological Process89expanded0.0005069410.003476336
GO:0034637cellular carbohydrate biosynthetic processGOBiological Process10expanded0.0005091260.003483308
GO:0042277peptide bindingGOMolecular Function22expanded0.0005110710.002177163
GO:0002709regulation of T cell mediated immunityGOBiological Process5expanded0.0005198540.003504494
GO:0010896regulation of triglyceride catabolic processGOBiological Process5expanded0.0005198540.003504494
GO:0060123regulation of growth hormone secretionGOBiological Process5expanded0.0005198540.003504494
GO:0060439trachea morphogenesisGOBiological Process5expanded0.0005198540.003504494
GO:0060512prostate gland morphogenesisGOBiological Process5expanded0.0005198540.003504494
GO:0051580regulation of neurotransmitter uptakeGOBiological Process6expanded0.0005209740.003504494
GO:0007606sensory perception of chemical stimulusGOBiological Process14expanded0.0005214760.003504494
GO:0032259methylationGOBiological Process22expanded0.0005217010.003504494
GO:0044723single-organism carbohydrate metabolic processGOBiological Process39expanded0.0005227960.003504494
GO:0044783G1 DNA damage checkpointGOBiological Process8expanded0.0005388240.003603836
GO:0046883regulation of hormone secretionGOBiological Process19expanded0.0005412920.003612247
GO:0005775vacuolar lumenGOCellular Component16expanded0.0005415010.003821747
GO:0046364monosaccharide biosynthetic processGOBiological Process10expanded0.000562170.003743197
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