Results 261 to 270 of about 41,410 (309)
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Molecular phylogeny of Paraonidae (Annelida).
Molecular Phylogenetics and Evolution, 2019A molecular phylogeny of the family Paraonidae was reconstructed on the basis of 16S rDNA, COI and 18S rDNA sequences obtained from 66 individuals belonging to 38 nominal species and subspecies. In agreement with previous findings, Paraonidae represent a monophyletic group, closely related to Sternaspidae.
Joachim Langeneck +3 more
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Species delineation in the speciation grey zone—The case of Diopatra (Annelida, Onuphidae)
, 2020Taxonomy based on morphology can be difficult. The challenges arise from different sources such as poor original descriptions, new records based on inadequate knowledge, uncritical application of general assumptions or presence of complexes of cryptic ...
A. H. Elgetany +6 more
semanticscholar +1 more source
Earthworms of Belarus (Annelida: Megadrili)
Zootaxa, 2023A survey of the earthworm fauna of Belarus that included most of its territory was performed in this study. One genus, three species and one subspecies were reported for the first time. The fauna of Belarus thus comprises 17 species and two subspecies. Detailed maps for all of the reported species were constructed.
Shekhovtsov, Sergei V. +6 more
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Biogeography of polychaete worms (Annelida) of the world
, 2020The global biogeography of polychaete worms has never been assessed previously. In the present study, we studied the world distribution patterns of polychaetes based on datasets obtained from the Global Biodiversity Information Facility, the Ocean ...
J. Pamungkas +2 more
semanticscholar +1 more source
2022
Annelids (the segmented worms) exist in a remarkably diverse range of mostly marine but also freshwater and terrestrial habitats, varying greatly in size and form. This text provides. This text begins with an introduction to the phylum and an outline of annelid taxonomy.
Greg Rouse, Fredrik Pleijel, Ekin Tilic
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Annelids (the segmented worms) exist in a remarkably diverse range of mostly marine but also freshwater and terrestrial habitats, varying greatly in size and form. This text provides. This text begins with an introduction to the phylum and an outline of annelid taxonomy.
Greg Rouse, Fredrik Pleijel, Ekin Tilic
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, 2015 Annelida are typically characterized by the presence of segmentation and can be found in all habitats on the Earth. Traditionally regarded as being closely related to arthropods, with several very well-known toxic or venomous species, molecular data robustly placed them within Lophotrochozoa. Besides annelids, only one other taxon within Lophotrochozoa,
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2015
AbstractSipuncula, commonly known as peanut worms, constitutes a small marine invertebrate taxon of about 150 species that is widespread and at all depths throughout the oceans. Adult sipunculans exhibit an unsegmented body, subdivided into a posterior trunk and a retractable anterior introvert.
Kristof, Alen, Maiorova, Anastassya S.
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AbstractSipuncula, commonly known as peanut worms, constitutes a small marine invertebrate taxon of about 150 species that is widespread and at all depths throughout the oceans. Adult sipunculans exhibit an unsegmented body, subdivided into a posterior trunk and a retractable anterior introvert.
Kristof, Alen, Maiorova, Anastassya S.
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A New Species in the Marphysa sanguinea Complex (Annelida, Eunicidae) from Hong Kong.
Zoological Studies, 2018Zhi Wang, Yanjie Zhang, and Jian-Wen Qiu (2018) Marphysa hongkongensa n. sp. (Annelida: Eunicidae) is described based on samples from the intertidal zone of Tolo Harbour, Hong Kong. This new species belongs to the Marphysa sanguinea species complex.
Zhi Wang, Yanjie Zhang, J. Qiu
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Canadian Journal of Zoology, 1982
The aquatic Oligochaeta as well as the earthworms can be derived from ancestors closely resembling living Haplotaxidae. Four of the five required intermediate forms are represented by living haplotaxid species. The polychaetes are also thought to be derived from simple earthworm-like forms.
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The aquatic Oligochaeta as well as the earthworms can be derived from ancestors closely resembling living Haplotaxidae. Four of the five required intermediate forms are represented by living haplotaxid species. The polychaetes are also thought to be derived from simple earthworm-like forms.
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1985
Organisms in the three major classes of annelids, the Polychaetes (marine sandworms), the Oligochaetes (earthworms), and the Hirudinea (leeches), contain at least three types of collagenous structures. These structures are (1) handed collagen fibers that are morphologically identical to those observed in vertebrate and many invertebrate species, (2 ...
Marvin L. Tanzer, Louann W. Murray
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Organisms in the three major classes of annelids, the Polychaetes (marine sandworms), the Oligochaetes (earthworms), and the Hirudinea (leeches), contain at least three types of collagenous structures. These structures are (1) handed collagen fibers that are morphologically identical to those observed in vertebrate and many invertebrate species, (2 ...
Marvin L. Tanzer, Louann W. Murray
openaire +2 more sources