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:0042398cellular modified amino acid biosynthetic processGOBiological Process8expanded0.001373160.007922896
GO:0000287magnesium ion bindingGOMolecular Function15expanded0.0014124830.00562353
GO:0090132epithelium migrationGOBiological Process23expanded0.0014236280.008198228
GO:0060674placenta blood vessel developmentGOBiological Process6expanded0.0014315650.008202091
GO:0007040lysosome organizationGOBiological Process9expanded0.0014325480.008202091
GO:0080171lytic vacuole organizationGOBiological Process9expanded0.0014325480.008202091
GO:0031905early endosome lumenGOCellular Component3expanded0.0014781250.009141176
GO:0045980negative regulation of nucleotide metabolic processGOBiological Process7expanded0.001490680.008502289
GO:0050994regulation of lipid catabolic processGOBiological Process7expanded0.001490680.008502289
GO:1902562H4 histone acetyltransferase complexGOCellular Component7expanded0.001494470.009141176
GO:0042182ketone catabolic processGOBiological Process4expanded0.0014999290.008506251
GO:0042364water-soluble vitamin biosynthetic processGOBiological Process4expanded0.0014999290.008506251
GO:1904000positive regulation of eating behaviorGOBiological Process4expanded0.0014999290.008506251
GO:0030879mammary gland developmentGOBiological Process13expanded0.0015272830.008598977
GO:0014850response to muscle activityGOBiological Process5expanded0.0015422240.008598977
GO:0030212hyaluronan metabolic processGOBiological Process5expanded0.0015422240.008598977
GO:0034405response to fluid shear stressGOBiological Process5expanded0.0015422240.008598977
GO:0043029T cell homeostasisGOBiological Process5expanded0.0015422240.008598977
GO:0060441epithelial tube branching involved in lung morphogenesisGOBiological Process5expanded0.0015422240.008598977
GO:1903672positive regulation of sprouting angiogenesisGOBiological Process5expanded0.0015422240.008598977
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