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Hooked on zombie worms? Genetic blueprints of bristle formation in Osedax japonicus (Annelida)
BackgroundThis study sheds light on the genetic blueprints of chaetogenesis (bristle formation), a complex biomineralization process essential not...
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Formation and degeneration of scaled capillary notochaetae in Owenia fusiformis Delle Chiaje, 1844 (Oweniidae, Annelida)
Phylotranscriptomic studies of the past decade have repeatedly placed Oweniidae together with Magelonidae, as the sister group to remaining annelids....
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Formation and structure of paleae and chaetal arrangement in chrysopetalidae (Annelida)
Chrysopetalids, more specifically the subfamily Chrysopetalinae, are known for their characteristic, flattened, leaf-like notopodial chaetae. In many...
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Early embryogenesis and organogenesis in the annelid Owenia fusiformis
BackgroundAnnelids are a diverse group of segmented worms within Spiralia, whose embryos exhibit spiral cleavage and a variety of larval forms. While...
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Structure, function and cell dynamics during chaetogenesis of abdominal uncini in Sabellaria alveolata (Sabellariidae, Annelida)
BackgroundDynamic apical microvilli of a single cell, called the chaetoblast, inside an ectodermal invagination form the template of annelid chaetae....
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Saccocirridae (Annelida) from the Canary Islands with a description of Saccocirrus slateri sp. nov.
Two species of Saccocirrus , S. slateri sp. nov. and S. parvus Gerlach, 1953 are recorded from samples collected in nine sandy beaches throughout the...
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Phylogenetic significance of chaetal arrangement and chaetogenesis in Maldanidae (Annelida)
Chaetae are important structures to facilitate locomotion in annelids. Being at the interface between the organisms and its environment, chaetae are...
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The Morphology and Microscopic Anatomy of the Deep-Sea Echiurid Protobonellia zenkevitchi Murina, 1976
Echiurida is a small group of marine benthic invertebrates that burrow in sediments and live a hidden lifestyle. Investigation of the morphology and...
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Chaetal type diversity increases during evolution of Eunicida (Annelida)
Annelid chaetae are a superior diagnostic character on species and supraspecific levels, because of their structural variety and taxon specificity. A...
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Taxonomy, geographical and bathymetric distribution of vestimentiferan tubeworms (Annelida, Siboglinidae)
A review of the taxonomy and distribution of vestimentiferan tubeworms has been performed. The subfamily Vestimentifera comprises three...
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History of a prolific family: the Hes/Hey-related genes of the annelid Platynereis
BackgroundThe Hes superfamily or Hes/Hey -related genes encompass a variety of metazoan-specific bHLH genes, with somewhat fuzzy phylogenetic...
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The metatrochophore of a deep-sea hydrothermal vent vestimentiferan (Polychaeta: Siboglinidae)
Vestimentiferans (Siboglinidae, Polychaeta) live as juveniles and adults in an obligate mutualistic association with thiotrophic bacteria. Since...
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Locomotion and fine structure of parapodia in Myzostoma cirriferum (Myzostomida)
Most myzostomids are ectocommensals of crinoids on which they move freely. Their locomotion is ensured by five pairs of parapodia located laterally...
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Chaetal arrangement in Orbiniidae (Annelida, Polychaeta) and its significance for systematics
The systematic position of Orbiniidae within Polychaeta is still uncertain. In order to provide additional comparative data, we investigated the...
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Chaetae and chaetogenesis in polychaetes (Annelida)
Annelid chaetae are epidermal extracellular structures that are in general clearly visible from the exterior. Their structure is highly diverse,...
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Chaetae and chaetogenesis in polychaetes (Annelida)
Annelid chaetae are epidermal extracellular structures that are in general clearly visible from the exterior. Their structure is highly diverse,... -
Polychaete phylogeny based on morphological data – a comparison of current attempts
Annelid phylogeny is one of the largest unresolved problems within the Metazoa. This is due to the enormous age of this taxon and also strongly...
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Polychaete phylogeny based on morphological data — a comparison of current attempts
Annelid phylogeny is one of the largest unresolved problems within the Metazoa. This is due to the enormous age of this taxon and also strongly... -
Pogonophora (Annelida): form and function
Pogonophora, also known as Siboglinidae, are tube-dwelling marine annelids. They rely on endosymbiotic chemoautotrophic bacteria for nutrition and...