Results 11 to 20 of about 3,807 (163)

Metamorphosis in solitary ascidians [PDF]

genesis, 2014
SummaryEmbryonic and postembryonic development in ascidians have been studied for over a century, but it is only in the last 10 years that the complex molecular network involved in coordinating postlarval development and metamorphosis has started to emerge.
Karaiskou, Anthi, Swalla, Billie J., Sasakura, Yasunori, Chambon, Jean-Philippe   +3 more
openaire   +3 more sources

An otx/nodal regulatory signature for posterior neural development in ascidians. [PDF]

PLoS Genetics, 2014
In chordates, neural induction is the first step of a complex developmental process through which ectodermal cells acquire a neural identity. In ascidians, FGF-mediated neural induction occurs at the 32-cell stage in two blastomere pairs, precursors ...
Agnès Roure, Patrick Lemaire, Sébastien Darras   +2 more
doaj   +1 more source

Insights into Cytotoxic Behavior of Lepadins and Structure Elucidation of the New Alkaloid Lepadin L from the Mediterranean Ascidian Clavelina lepadiformis

Marine Drugs, 2022
The chemical investigation of the Mediterranean ascidian Clavelina lepadiformis has led to the isolation of a new lepadin, named lepadin L, and two known metabolites belonging to the same family, lepadins A and B.
Marcello Casertano, Massimo Genovese, Paolo Paoli, Alice Santi, Anna Aiello, Marialuisa Menna, Concetta Imperatore   +6 more
doaj   +1 more source

Occurrence and Seasonal Monitoring of Domoic Acid in Three Shellfish Species from the Northern Adriatic Sea

Toxins, 2022
As filter feeders, bivalves and ascidians can accumulate contaminants present in the environment and pass them on to higher food chain levels as vectors.
Kristina Kvrgić, Tina Lešić, Natalija Džafić, Jelka Pleadin   +3 more
doaj   +1 more source

The relationship between Ascidians and plastic pollution: A systematic review of interaction mechanisms, biological impacts, and ecological roles [PDF]

BIO Web of Conferences
Microplastic (MP) and nanoplastic (NP) pollution are global threats that permeate marine ecosystems. As sessile filter-feeders, ascidians interact heavily with these pollutants.
Suripatty Gabriel, Hombing Angelina Br., Ismet Meutia S., Subhan Beginer, Cordova Muhammad R., Zamani Neviaty P.   +5 more
doaj   +1 more source

Biological and Chemical Diversity of Ascidian-Associated Microorganisms

Marine Drugs, 2018
Ascidians are a class of sessile filter-feeding invertebrates, that provide unique and fertile niches harboring various microorganisms, such as bacteria, actinobacteria, cyanobacteria and fungi.
Lei Chen, Jin-Shuang Hu, Jia-Lei Xu, Chang-Lun Shao, Guang-Yu Wang   +4 more
doaj   +1 more source

Brain Sensory Organs of the Ascidian Ciona robusta: Structure, Function and Developmental Mechanisms

Frontiers in Cell and Developmental Biology, 2021
During evolution, new characters are designed by modifying pre-existing structures already present in ancient organisms. In this perspective, the Central Nervous System (CNS) of ascidian larva offers a good opportunity to analyze a complex phenomenon ...
Paola Olivo, Antonio Palladino, Filomena Ristoratore, Antonietta Spagnuolo   +3 more
doaj   +1 more source

Ascidian notochord elongation

Developmental Biology, 2019
The elongation of embryo and tissue is a key morphogenetic event in embryogenesis and organogenesis. Notochord, a typical chordate organ, undergoes elongation to perform its regulatory roles and to form the structural support in the embryo. Notochord elongation is morphologically similar across all chordates, but ascidian has evolved distinct molecular
Qiongxuan, Lu, Punit, Bhattachan, Bo, Dong   +2 more
openaire   +2 more sources

Behavioural Responses to Ultrasound Antifouling Systems by Adult Solitary Ascidians

Journal of Marine Science and Engineering, 2023
Ultrasonic antifouling devices are installed globally on a variety of vessel types and are marketed as an environmentally friendly method for biofouling control. The aim of this study was to examine the effects of ultrasound on adults of three species of
Roberta Varello, Davide Asnicar, Jacopo Boaga, Francesca Cima   +3 more
doaj   +1 more source

Note to: Hox gene cluster of the ascidian, Halocynthia roretzi, reveals multiple ancient steps of cluster disintegration during ascidian evolution

Zoological Letters, 2019
Background In the previous paper published in 2017, we described the structure of Hox gene cluster of the ascidian, Halocynthia roretzi, and discussed the scenario for the disintegration of Hox gene clusters during evolution of ascidians. The description
Yuka Sekigami, Takuya Kobayashi, Ai Omi, Koki Nishitsuji, Tetsuro Ikuta, Asao Fujiyama, Noriyuki Satoh, Hidetoshi Saiga   +7 more
doaj   +1 more source