Results 21 to 30 of about 117 (99)

Molecular phylogeny and classification of the family Myxinidae (Cyclostomata: Myxiniformes) using the supermatrix method

open access: yesJournal of Asia-Pacific Biodiversity, 2020
Many aspects of myxinid taxonomy remain poorly understood, particularly at the genus and subfamily levels. To clarify the validity of two genera (Paramyxine and Notomyxine) and two subfamilies (Rubicundinae and Myxininae), we used a novel supermatrix ...
Young Sun Song, Jin-Koo Kim
doaj   +1 more source

Three in one: evolution of viviparity, coenocytic placenta and polyembryony in cyclostome bryozoans

open access: yesBMC Ecology and Evolution, 2021
Background Placentation has evolved multiple times among both chordates and invertebrates. Although they are structurally less complex, invertebrate placentae are much more diverse in their origin, development and position.
U. A. Nekliudova   +5 more
doaj   +1 more source

ICHTHYOFAUNA OF A PART OF SAVA RIVER [PDF]

open access: yesCroatian Journal of Fisheries, 1997
Based on a personal research from 1991-1994 the ichthyofauna structure of the part of the Sava river upstream from Zagreb on the section from Podsused to Gradna mouth is presented. The data are being compared with the results of the research of this part
Dobrila Habeković   +3 more
doaj  

XXIV.—On the blood-corpuscles of the Cyclostomata [PDF]

open access: yesAnnals and Magazine of Natural History, 1887
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources

The nervous system in the cyclostome bryozoan Crisia eburnea as revealed by transmission electron and confocal laser scanning microscopy

open access: yesFrontiers in Zoology, 2018
Introduction Among bryozoans, cyclostome anatomy is the least studied by modern methods. New data on the nervous system fill the gap in our knowledge and make morphological analysis much more fruitful to resolve some questions of bryozoan evolution and ...
Elena N. Temereva, Igor A. Kosevich
doaj   +1 more source

Why Some Bryozoans Poop Themselves: A Novel Defecation Method in Ctenostome Bryozoans

open access: yesJournal of Morphology, Volume 287, Issue 8, August 2026.
Defecation process in ctenostome bryozoans with vestibular anus. Faecal pellets are formed in the gut and afterwards pushed via the hindgut onto the retracted lophophore. The latter pushes the pellets outside. ABSTRACT Feeding in animal colonies is a challenging but important aspect in organisms comprised of numerous zooids.
Thomas Schwaha, Sebastian H. Decker
wiley   +1 more source

Chromosome evolution at the origin of the ancestral vertebrate genome

open access: yesGenome Biology, 2018
Background It has been proposed that more than 450 million years ago, two successive whole genome duplications took place in a marine chordate lineage before leading to the common ancestor of vertebrates. A precise reconstruction of these founding events
Christine Sacerdot   +4 more
doaj   +1 more source

Rare Now and Rarer in the Future? Future Potential Distributions of the Endemic Lampetra zanandreai Showed Contractions in Its Suitable Areas

open access: yesAquatic Conservation: Marine and Freshwater Ecosystems, Volume 36, Issue 2, February 2026.
ABSTRACT The Mediterranean basin is a hotspot of freshwater endemisms and restricted‐range species, which are among the most threatened worldwide. The Adriatic brook lamprey Lampetra zanandreai is a non‐parasitic, freshwater‐resident lamprey whose core distribution lies in the Po River basin (Northern Italy).
Margherita Abbà   +5 more
wiley   +1 more source

Morphology of the bryozoan Cinctipora elegans (Cyclostomata, Cinctiporidae) with first data on its sexual reproduction and the cyclostome neuro-muscular system

open access: yesBMC Evolutionary Biology, 2018
Background Cyclostome bryozoans are an ancient group of marine colonial suspension-feeders comprising approximately 700 extant species. Previous morphological studies are mainly restricted to skeletal characters whereas data on soft tissues obtained by ...
Thomas F. Schwaha   +3 more
doaj   +1 more source

QuickProt: A Fast and Accurate Homology‐Based Protein Annotation Tool for Non‐Model Organisms to Advance Comparative Genomics

open access: yesMolecular Ecology Resources, Volume 26, Issue 2, February 2026.
ABSTRACT The rapid growth of genome sequencing has outpaced the development of efficient annotation tools, especially for species lacking transcriptome data. To address this challenge, we present QuickProt, a fast, accurate and user‐friendly homology‐based protein annotation tool.
Guisen Chen   +8 more
wiley   +1 more source

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