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- The Clitellata are a class of annelid worms, characterized by having a clitellum – the 'collar' that forms a reproductive cocoon during part of their life cycles. The clitellates comprise around 8,000 species.Learn more:The Clitellata are a class of annelid worms, characterized by having a clitellum – the 'collar' that forms a reproductive cocoon during part of their life cycles. The clitellates comprise around 8,000 species.en.wikipedia.org/wiki/ClitellataThis work provides a detailed examination of the Class Clitellata, focusing specifically on the Oligochaeta (earthworms). Key distinctions are drawn between Oligochaeta and other clitellate groups, along with their habitat diversity, morphological characteristics, and function of chaetae.www.academia.edu/20736949/Annelida_Clitellata_…
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Clitellata - Wikipedia
Clitellate annelids are segmented worms characterised by the clitellum or girdle which is located near the head end of mature individuals. The mouth is on the ventral surface and is overhung by the prostomium (proboscis). The brain is not located in the head but in one of the body segments. The clitellum is … See more
According to modern phylogenetic analyses, the Clitellata are considered to be a monophyletic clade embedded deep in the polychaetes.
The group is divided into the subclasses Oligochaeta and Hirudinea. The oligochaetes … See moreAll clitellata are hermaphrodites. During copulation, the clitellum produces a mucus that holds worms in place whilst they mate. During … See more
Wikipedia text under CC-BY-SA license Phylogenomic analyses reveal a Palaeozoic radiation …
Clitellate annelids (earthworms, leeches and numerous smaller taxa) are an abundant and diverse animal group in these systems and comprise at least …
- Author: Christer Erséus, Bronwyn W. Williams, Bronwyn W. Williams, Kevin M. Horn, Kevin M. Horn, Kenneth M. ...
- Publish Year: 2020
Images of Clitellate annelid
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To address these questions, we have compared the organization of 23 spiralian taxa for which well-assembled genomes are currently available (Figure 1A): 12 clitellate annelids, including 4 …
Classification and Checklist of Leeches (Phylum Annelida: Class ...
See more on mjwetzel.inhs.illinois.eduFreshwater leeches (segmented worms) are important components of benthic communities in nearly every freshwater ecosystem. They are widely distributed, and some groups are found in great abundance. Several of the hirudinidan groups have been used for monitoring and detecting changes in water quality and physic…Clitellata - an overview | ScienceDirect Topics
The goal of this article is to highlight key questions concerning the origin of the clitellate annelids, the most successful annelid lineage in freshwater and terrestrial habitats.
Annelida (Clitellata): Oligochaeta, Branchiobdellida, Hirudinida, …
Jan 1, 2010 · Freshwater annelids (oligochaetes, branchiobdellidans, leeches, and acanthobdellids) can be found in both standing and flowing water and are often an important …
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Microscopic anatomy of aquatic oligochaetes …
The taxonomic identification of oligochaetes (clitellate annelids) mainly relies on internal organs due to the simplicity of their external anatomy. This fact, added to the small size of most of the aquatic oligochaetes (“microdriles”) has made the …
Segmentation in Annelids: Cellular and …
Annelids are segmented animals that display a high degree of metamerism in their body plan. This review describes the segmentation of clitellate annelids (i.e., oligochaetes and …
Clitellate worms (Annelida) in lateglacial and …
Nov 26, 2018 · In this study, we set out to analyse mammalian DNA from lateglacial and Holocene lake sediments for faunal reconstruction, but because of the low retrieval of mammalian DNA and the unexpected clitellate DNA …
(PDF) Annelida: Clitellata, Oligochaeta - Academia.edu
This work provides a detailed examination of the Class Clitellata, focusing specifically on the Oligochaeta (earthworms). Key distinctions are drawn between Oligochaeta and other clitellate …
Cryptic Clitellata: Molecular Species Delimitation of …
Jan 20, 2021 · Here we give a historical overview of the data and methods used to delimit clitellates from the mid-1970s to today. We also discuss the taxonomical treatment of the cryptic species, including the...
Microscopic anatomy of aquatic oligochaetes (Annelida, …
Jan 1, 2012 · The taxonomic identification of oligochaetes (clitellate annelids) mainly relies on internal organs due to the simplicity of their external anatomy. This fact, added to the small …
Fine taxonomic sampling of nervous systems within Naididae …
Apr 18, 2015 · Increasing sampling within clades can strengthen inferences by revealing which features are conserved and which are variable within them. Among the Annelida, the …
Fossilized spermatozoa preserved in a 50-Myr-old annelid …
Jul 1, 2015 · Here, we report the remarkable discovery of fossilized spermatozoa preserved within the secreted wall layers of a 50-Myr-old clitellate cocoon from Antarctica, representing the …
18S rDNA phylogeny of Clitellata (Annelida) - Wiley Online Library
Feb 24, 2004 · The phylogeny of Clitellata was analysed using 18S rDNA sequences of a selection of species representing Hirudinida, Acanthobdellida, Branchiobdellida and 10 …
Cryptic Clitellata: Molecular Species Delimitation of Clitellate …
Jan 20, 2021 · Clitellata is a large “class” of segmented worms, comprising about one third of all known annelid species. It is placed within “subclass” Sedentaria (e.g., [17, 18]), which is often …
Eocene annelid cocoons - Palaeontologia Electronica
Clitellate annelids have a meagre body fossil record but they secrete proteinaceous cocoons for the protection of eggs that, after hardening, are readily fossilized and offer a largely untapped …
Download PDF | Fossil clitellate annelid cocoons and their ...
Apr 11, 2016 · Clitellate annelids have a meagre body fossil record but they secrete proteinaceous cocoons for the protection of eggs that, after hardening, are readily fossilized and offer a largely...
Na+/K+‐ATPase gene duplications in clitellate annelids are …
Jun 1, 2019 · Here, we examined the available annelid genomes for evidence of an expansion of the Na + /K + ‐ATPase alpha‐subunit gene family in the clitellate lineage. We also looked for …
Clitellate annelids (earthworms, leeches and numerous smaller taxa) are an abundant and diverse animal group in these systems and comprise at least one-third of all described species of …
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