Results 51 to 60 of about 4,001 (195)

Correction: Development of the Nervous System of Carinina ochracea (Palaeonemer-tea, Nemertea). [PDF]

open access: yesPLoS ONE, 2016
[This corrects the article DOI: 10.1371/journal.pone.0165649.].
PLOS ONE Staff
doaj   +1 more source

Ecology and Reproduction of Bunodeopsis in Tropical Northwestern Atlantic Seagrass Ecosystems

open access: yesMarine Ecology, Volume 47, Issue 2, March/April 2026.
ABSTRACT The seagrass ecosystems of the Tropical Northwestern Atlantic (TNA) host three described species of sea anemones in the genus Bunodeopsis Andres, 1881 (Enthemonae: Metridioidea: Acuticulata): B. antilliensis, B. globulifera, and B. pelagica.
Isabel A. M. Pen   +15 more
wiley   +1 more source

Rediscovery of the nemertean Prostoma graecense from Xochimilco, 75 years after its first and only record

open access: yesRevista Mexicana de Biodiversidad, 2018
The identity of the freshwater nemertean Prostoma graecense (Böhming, 1892) from Lake Xochimilco is solved 75 years after its first recording. Identification of the specimens was accomplished via both morphological and molecular means, the latter ...
Omar Lagunas-Calvo   +6 more
doaj   +1 more source

Ameliorating Effect of Chloride on Nitrite Toxicity to Freshwater Invertebrates with Different Physiology: a Comparative Study Between Amphipods and Planarians [PDF]

open access: yes, 2008
High nitrite concentrations in freshwater ecosystems may cause toxicity to aquatic animals. These living organisms can take nitrite up from water through their chloride cells, subsequently suffering oxidation of their respiratory pigments (hemoglobin ...
Alonso, A., Camargo, J.A.
core   +2 more sources

Annulonemertes (phylum Nemertea): when segments do not count [PDF]

open access: yesBiology Letters, 2007
We estimated the phylogenetic position of the pseudosegmented ribbon worm Annulonemertes minusculus to test proposed evolutionary hypotheses to explain these body constrictions. The analysis is based on 18S rDNA sequences and shows that the species belongs to an apomorphic clade of hoplonemertean species.
Sundberg, Per, Strand, Malin
openaire   +2 more sources

The Seasonal Rhythms of Coastal eDNA: Insights Into Biodiversity and Regional Detection Patterns

open access: yesEnvironmental DNA, Volume 8, Issue 1, January–February 2026.
Seasonal variation affects environmental DNA (eDNA) detection, yet its influence on species monitoring remains underexplored. This study examines eDNA detection windows across taxa, primers, and regions, finding that most species have short detection periods (1–2 months) that vary with taxonomy and primer choice. These results underscore the importance
Melissa K. Morrison   +7 more
wiley   +1 more source

Quantitative composition and distribution of the macrobenthic invertebrate fauna of the Continental Shelf ecosystems of the Northeastern United States [PDF]

open access: yes, 1998
From the mid-1950's to the mid-1960's a series of quantitative surveys of the macrobenthic invertebrate fauna were conducted in the offshore New England region (Maine to Long Island, New York).
Theroux, Roger B., Wigley, Roland L.
core  

A nemertean excitatory peptide/CCHamide regulates ciliary swimming in the larvae of Lineus longissimus

open access: yesFrontiers in Zoology, 2019
Background The trochozoan excitatory peptide (EP) and its ortholog, the arthropod CCHamide, are neuropeptides that are only investigated in very few animal species. Previous studies on different trochozoan species focused on their physiological effect in
Daniel Thiel   +3 more
doaj   +1 more source

First record of Baseodiscus mexicanus (Bürger, 1893) (Nemertea: Heteronemertea) from Japanese waters [PDF]

open access: yesCheck List, 2012
The heteronemertean Baseodiscus mexicanus (Bürger, 1893) was previously known exclusively from the eastern Pacific, except for fragmentary records from Palau and Indonesia, which suggested a possible amphi-Pacific tropical distribution. A single specimen
Hiroshi Kajihara   +2 more
doaj   +3 more sources

Phylogenetic Position of Nemertea Derived from Phylogenomic Data [PDF]

open access: yesMolecular Biology and Evolution, 2008
Nemertea and Platyhelminthes have traditionally been grouped together because they possess a so-called acoelomate organization, but lateral vessels and rhynchocoel of nemerteans have been regarded as coelomic cavities. Additionally, both taxa show spiral cleavage patterns prompting the placement of Nemertea as sister to coelomate Protostomia, that is ...
Torsten H, Struck, Frauke, Fisse
openaire   +2 more sources

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