Results 21 to 30 of about 3,807 (163)

Mass Mortality of Shallow-Water Temperate Corals in Marine Protected Areas of the North Aegean Sea (Eastern Mediterranean)

Hydrobiology, 2023
Coral mortality is a global phenomenon of increasing magnitude, correlated with climate change. Prolonged marine heatwaves have particularly affected the north Aegean Sea in summer 2021, threatening shallow-water stony corals, such as Balanophyllia ...
Chryssanthi Antoniadou, Martha Pantelidou, Maria Skoularikou, Chariton Charles Chintiroglou   +3 more
doaj   +1 more source

Physiological changes during torpor favor association with Endozoicomonas endosymbionts in the urochordate Botrylloides leachii

Frontiers in Microbiology, 2023
Environmental perturbations evoke down-regulation of metabolism in some multicellular organisms, leading to dormancy, or torpor. Colonies of the urochordate Botrylloides leachii enter torpor in response to changes in seawater temperature and may survive ...
Yosef Hyams, Yosef Hyams, Maxim Rubin-Blum, Amalia Rosner, Leonid Brodsky, Leonid Brodsky, Yuval Rinkevich, Baruch Rinkevich   +7 more
doaj   +1 more source

Alkaloids from Marine Ascidians [PDF]

Molecules, 2011
About 300 alkaloid structures isolated from marine ascidians are discussed in term of their occurrence, structural type and reported pharmacological activity. Some major groups (e.g., the lamellarins and the ecteinascidins) are discussed in detail, highlighting their potential as therapeutic agents for the treatment of cancer or viral infections.
MENNA, MARIALUISA, FATTORUSSO, ERNESTO, IMPERATORE, CONCETTA   +2 more
openaire   +3 more sources

Immunobiology of compound ascidians, with particular reference to Botryllus schlosseri: state of art [PDF]

Invertebrate Survival Journal, 2008
The phylogenetic position of invertebrate chordates closely related to vertebrates explains the increasing interest towards tunicate immunobiology. Most of the tunicates are ascidians which, like all other invertebrates, rely only on innate immunity for ...
L Ballarin
doaj   +2 more sources

Fertilization of Ascidians: Gamete Interaction, Self/Nonself Recognition and Sperm Penetration of Egg Coat

Frontiers in Cell and Developmental Biology, 2022
Fertilization is one of the most important events in living organisms to generate a new life with a mixed genetic background. To achieve successful fertilization, sperm and eggs must undergo complex processes in a sequential order.
Takako Saito, Hitoshi Sawada, Hitoshi Sawada   +2 more
doaj   +1 more source

Seasonal variation in Azumiobodo hoyamushi infection among benthic organisms in the southern coast of Korea

Parasites & Vectors, 2015
Background Recent studies have reported that soft tunic syndrome (STS) in the edible ascidian Halocynthia roretzi is caused by the kinetoplastid parasite Azumiobodo hoyamushi.
Ki-Woong Nam, Yun-Kyung Shin, Kyung-Il Park   +2 more
doaj   +1 more source

Mechanisms of Sperm–Egg Interactions: What Ascidian Fertilization Research Has Taught Us

Cells, 2022
Fertilization is an essential process in terrestrial organisms for creating a new organism with genetic diversity. Before gamete fusion, several steps are required to achieve successful fertilization.
Hitoshi Sawada, Takako Saito
doaj   +1 more source

Possible Evolutionary Precursors of Mast Cells: The ‘Granular Cell’ Immunocyte of Botrylloides leachii (Tunicata; Ascidiacea)

Journal of Marine Science and Engineering
Vertebrate mast cells are the first cells to initiate the inflammatory response. The origin of these highly specialised innate immunity cells in chordates is an intriguing unanswered question, and tunicates represent the best candidates to address this ...
Nicolò Brunelli, Stefano Dalle Palle, Francesca Cima   +2 more
doaj   +1 more source

Antitumor potential of natural products from marine ascidians of the Gibraltar Strait: A survey

Ciencias Marinas, 2003
The chemical study of a selection of marine ascidians from the Gibraltar Strait has led to the characterization of a collection of natural products of diverse biosynthetic origin.
E Zubía, MJ Ortega, J Salvá
doaj   +1 more source

Secondary contacts and genetic admixture shape colonization by an amphiatlantic epibenthic invertebrate

Evolutionary Applications, 2020
Research on the genetics of invasive species often focuses on patterns of genetic diversity and population structure within the introduced range. However, a growing body of literature is demonstrating the need to study how native genotypes affect both ...
Jamie Hudson, Kerstin Johannesson, Christopher D. McQuaid, Marc Rius   +3 more
doaj   +1 more source