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:1904262negative regulation of TORC1 signalingGOBiological Process5expanded0.0015422240.008598977
GO:2000772regulation of cellular senescenceGOBiological Process5expanded0.0015422240.008598977
GO:0018210peptidyl-threonine modificationGOBiological Process13expanded0.0016270960.009055276
GO:0007218neuropeptide signaling pathwayGOBiological Process10expanded0.0016400870.009110577
GO:0001505regulation of neurotransmitter levelsGOBiological Process26expanded0.0017116570.009490467
GO:0010595positive regulation of endothelial cell migrationGOBiological Process9expanded0.0017191060.009496468
GO:0033555multicellular organismal response to stressGOBiological Process9expanded0.0017191060.009496468
GO:0004054arginine kinase activityGOMolecular Function2expanded0.0017294030.006821533
GO:0005719nuclear euchromatinGOCellular Component7expanded0.0017361050.010445092
GO:0090130tissue migrationGOBiological Process23expanded0.0018001580.009925825
GO:0046879hormone secretionGOBiological Process19expanded0.0018273110.010056954
GO:0005979regulation of glycogen biosynthetic processGOBiological Process5expanded0.0018552750.010099059
GO:0006030chitin metabolic processGOBiological Process5expanded0.0018552750.010099059
GO:0009649entrainment of circadian clockGOBiological Process5expanded0.0018552750.010099059
GO:0030536larval feeding behaviorGOBiological Process5expanded0.0018552750.010099059
GO:0045922negative regulation of fatty acid metabolic processGOBiological Process5expanded0.0018552750.010099059
GO:0090314positive regulation of protein targeting to membraneGOBiological Process5expanded0.0018552750.010099059
GO:0006006glucose metabolic processGOBiological Process14expanded0.0018634990.01012535
GO:0030260entry into host cellGOBiological Process8expanded0.0018717190.0101331
GO:0051806entry into cell of other organism involved in symbiotic interactionGOBiological Process8expanded0.0018717190.0101331
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