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Ultrastructure and functional morphology of the dorsal organs in Scoloplos armiger (Annelida, Sedentaria, Orbiniida)
Annelids and particularly polychaetes possess a great variety of sensory organs and respond to numerous sensory stimuli. Although eyes and nuchal...
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Ultrastructure and functional morphology of the appendages in the reef-building sedentary polychaete Sabellaria alveolata (Annelida, Sedentaria, Sabellida)
BackgroundThe sedentary polychaete Sabellaria alveolata , the sandcastle or honeycomb worm, possesses four different kinds of appendages besides the...
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Coastal habitat evidences and biological data of Alepisaurus ferox (Aulopiform; Alepisauridae) from northwestern Iberian Peninsula
Several specimens of Alepisaurus ferox Lowe,
1833 were caught in the coastal Galician waters (Northwest Spain). From two preserved specimens,...
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A phenological comparison of grizzly (Ursus arctos) and polar bears (Ursus maritimus) as waterfowl nest predators in Wapusk National Park
Relatively little is known about the feeding ecology of grizzly bears ( Ursus arctos ) in Wapusk National Park. Other ursids, polar bears ( Ursus...
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CaaX-less lamins: Lophotrochozoa provide a glance at the playground of evolution
Nuclear lamins are the main components of the nuclear lamina in many eukaryotes. They are members of the intermediate filament (IF) protein family....
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Annelida (Ringelwürmer)
Ringelwürmer (Annelida) sind eine relativ große Gruppe meist frei lebender aquatischer und terrestrischer Formen, die eine außergewöhnlich große...
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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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Ultrastructure of cerebral eyes in Oweniidae and Chaetopteridae (Annelida) – implications for the evolution of eyes in Annelida
BackgroundRecent phylogenomic studies have revealed a robust, new hypothesis of annelid phylogeny. Most surprisingly, a few early branching lineages...
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Diversity and Community Structure of Polychaetes in Mangroves of Indian Coast
This review article provides a comprehensive account of the diversity of polychaetes associated to Indian mangrove ecosystems. Polychaetes constitute...
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Loss of complexity from larval towards adult nervous systems in Chaetopteridae (Chaetopteriformia, Annelida) unveils evolutionary patterns in Annelida
Chaetopteridae — the parchment worms — comprise a group of early branching annelids with a scarcely investigated neuroanatomy and neurogenesis. Due...
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Scanning electron microscopic investigation of general morphology and ciliary structures in Nereilinum murmanicum Ivanov, 1961 (Annelida, Siboglinidae)
The general morphology of the body, including the distribution of putative sensory ciliary cells, was studied using scanning electron microscopy...
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Anterior sense organs in Sabellaria alveolata (Annelida, Sedentaria, Spionida) with special reference to ultrastructure of photoreceptor elements presumably involved in shadow reflex
The reef-building sedentary polychaete, Sabellaria alveolata , is well known for its specialized anterior end, the operculum, which is exposed to the...
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Transcriptomic landscape of posterior regeneration in the annelid Platynereis dumerilii
BackgroundRestorative regeneration, the capacity to reform a lost body part following amputation or injury, is an important and still poorly...
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Annelida
Die Annelida (Ringelwürmer) besiedeln sowohl marine als auch terrestrische Lebensräume. Sie sind mariner Herkunft und viele marine Arten entwickeln...
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First report of the mitogenome of the invasive reef-building polychaete Ficopomatus enigmaticus (Annelida: Serpulidae) and a cryptic lineage from the Japanese Archipelago
BackgroundThe mitochondrial genomes (mitogenomes) of the family Serpulidae are characterized by a high nucleotide sequence divergence and a...
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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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Ultrastructure of pigmented eyes in Onuphidae and Eunicidae (Annelida: Errantia: Eunicida) and its importance in understanding the evolution of eyes in Annelida
Annelida displays enormous eye and photoreceptor cell (PRC) diversity. In polychaetes, larval and adult eyes can be readily distinguished as the...
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Fleshy red algae mats act as temporary reservoirs for sessile invertebrate biodiversity
Many coastal ecosystems, such as coral reefs and seagrass meadows, currently experience overgrowth by fleshy algae due to the interplay of local and...
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May the palps be with you – new insights into the evolutionary origin of anterior appendages in Terebelliformia (Annelida)
BackgroundHead appendages in Annelida contribute significantly to the immense morphological diversity in this spiralian taxon. Nevertheless, the...
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Feeding ecology of the longtail southern cod, Patagonotothen ramsayi (Regan, 1913) (Notothenioidei) in the Marine Protected Area Namuncurá-Burdwood Bank, Argentina
Patagonotothen ramsayi has the highest concentrations at Burdwood Bank, playing a key ecological role in the demersal food web. The aim of this study...
