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:0060292long term synaptic depressionGOBiological Process5expanded0.0035833320.017212687
GO:0060438trachea developmentGOBiological Process5expanded0.0035833320.017212687
GO:0090313regulation of protein targeting to membraneGOBiological Process5expanded0.0035833320.017212687
GO:0005977glycogen metabolic processGOBiological Process8expanded0.0035917050.017225172
GO:0043176amine bindingGOMolecular Function4expanded0.0036111760.013036958
GO:0006308DNA catabolic processGOBiological Process7expanded0.0036125160.017297167
GO:0009411response to UVGOBiological Process13expanded0.0036918070.017648495
GO:0006750glutathione biosynthetic processGOBiological Process4expanded0.0038118160.018106124
GO:0007210serotonin receptor signaling pathwayGOBiological Process4expanded0.0038118160.018106124
GO:0019852L-ascorbic acid metabolic processGOBiological Process4expanded0.0038118160.018106124
GO:0044243multicellular organism catabolic processGOBiological Process4expanded0.0038118160.018106124
GO:0072330monocarboxylic acid biosynthetic processGOBiological Process16expanded0.0038751690.018377791
GO:0008217regulation of blood pressureGOBiological Process12expanded0.0039578270.018739995
GO:0046058cAMP metabolic processGOBiological Process7expanded0.0039877090.018851562
GO:0050918positive chemotaxisGOBiological Process6expanded0.0041014410.019358544
GO:0005773vacuoleGOCellular Component37expanded0.0041437960.023042015
GO:0010761fibroblast migrationGOBiological Process5expanded0.0041518220.019381665
GO:0045429positive regulation of nitric oxide biosynthetic processGOBiological Process5expanded0.0041518220.019381665
GO:0050819negative regulation of coagulationGOBiological Process5expanded0.0041518220.019381665
GO:0051353positive regulation of oxidoreductase activityGOBiological Process5expanded0.0041518220.019381665
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