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:0030850prostate gland developmentGOBiological Process5expanded0.0054769920.024348535
GO:0035924cellular response to vascular endothelial growth factor stimulusGOBiological Process5expanded0.0054769920.024348535
GO:0045838positive regulation of membrane potentialGOBiological Process5expanded0.0054769920.024348535
GO:0046331lateral inhibitionGOBiological Process5expanded0.0054769920.024348535
GO:0070873regulation of glycogen metabolic processGOBiological Process5expanded0.0054769920.024348535
GO:0090342regulation of cell agingGOBiological Process5expanded0.0054769920.024348535
GO:0032799low-density lipoprotein receptor particle metabolic processGOBiological Process4expanded0.0055693770.024685665
GO:0035459cargo loading into vesicleGOBiological Process4expanded0.0055693770.024685665
GO:0019229regulation of vasoconstrictionGOBiological Process7expanded0.0057904380.025627415
GO:0043534blood vessel endothelial cell migrationGOBiological Process8expanded0.0058717710.02594888
GO:0007126meiotic nuclear divisionGOBiological Process18expanded0.0060703210.02678664
GO:0007593chitin-based cuticle sclerotizationGOBiological Process5expanded0.0062405250.027300164
GO:0031641regulation of myelinationGOBiological Process5expanded0.0062405250.027300164
GO:0048680positive regulation of axon regenerationGOBiological Process5expanded0.0062405250.027300164
GO:0070572positive regulation of neuron projection regenerationGOBiological Process5expanded0.0062405250.027300164
GO:0072697protein localization to cell cortexGOBiological Process5expanded0.0062405250.027300164
GO:0030258lipid modificationGOBiological Process16expanded0.0062416060.027300164
GO:0070542response to fatty acidGOBiological Process8expanded0.0063396770.027648037
GO:2000134negative regulation of G1/S transition of mitotic cell cycleGOBiological Process8expanded0.0063396770.027648037
GO:0009725response to hormoneGOBiological Process47expanded0.006469680.028173805
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