Results 61 to 70 of about 10,332 (207)

The Embryonic Development of the Cotylean Polyclad Phrikoceros jannetae

Acta Zoologica, EarlyView.
ABSTRACT Polyclads exhibit distinct developmental modes ranging from direct to indirect development, with several transitional stages also recognised. The existence of an indirect developmental mode in polyclads with a planktonic life history stage in the form of a free‐swimming larva is unique among all free‐living flatworms and makes polyclads a ...
Mehrez Gammoudi, Bernhard Egger, Isabel L. Dittmann, Verónica N. Bulnes, Pavel Tomancak, Abdel Halim Harrath, Johannes Girstmair   +6 more
wiley   +1 more source

Metabolite profiling of ascidian Styela plicata using LC–MS with multivariate statistical analysis and their antitumor activity

Journal of Enzyme Inhibition and Medicinal Chemistry, 2017
To identify the metabolite distribution in ascidian, we have applied an integrated liquid chromatography– tandem mass spectrometry (LC–MS) metabolomics approach to explore and identify patterns in chemical diversity of invasive ascidian Styela plicata. A
Satheesh Kumar Palanisamy, Daniela Trisciuoglio, Clemens Zwergel, Donatella Del Bufalo, Antonello Mai   +4 more
doaj   +1 more source

Protostigmata in ascidians [PDF]

Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character, 1913
Abstract It has been showed that at a certain stage in the ontogeny of Ascidians there is usually a definite number of stigmata or gill slits, which are elongated dorsorventrally and arranged in a longitudinal series on each side of the pharynx. To these the name protostigmata was given by Garstang in 1892.
openaire   +1 more source

Characterization of dermatan sulfate and chondroitin sulfate profiles during brain regeneration in Styela plicata

The FEBS Journal, EarlyView.
Adult ascidians are capable of regenerating their entire brains following injury, and glycosaminoglycans have been shown to either promote or inhibit neuritogenesis. In this study, dermatan 2,6‐disulfate (D2,6S) was identified as the predominant complex carbohydrate in the ascidian brain.
Taynan Motta Portal, Samara de Oliveira Pimentel, Bruno da Costa Rodrigues, Mauro Sérgio Gonçalves Pavão, Rodrigo Nunes da Fonseca, Cintia Monteiro de Barros   +5 more
wiley   +1 more source

Ascidian Tail Formation Requires caudal Function [PDF]

, 1999
Although the tail is one of the major characteristics of animals of the phylum Chordata, evolutionary aspects of the molecular mechanisms involved in its formation are not clear. To obtain insights into these issues, we have isolated and investigated the
Katsuyama, You, Sato, Yoshiko, Wada, Shuichi, Saiga, Hidetoshi   +3 more
core   +1 more source

Kelp‐boulder transplants for habitat restoration

Restoration Ecology, EarlyView.
Abstract Introduction Degraded habitats present a major barrier to the survival and recovery of threatened marine species, particularly where structural or biogenic complexity has been lost, and natural regeneration ability is uncertain. Despite growing interest in habitat restoration, techniques rarely deliver rapid improvements at the necessary ...
Tyson J. Bessell, Victor Shelamoff, Cayne Layton, Jemina Stuart‐Smith   +3 more
wiley   +1 more source

Isolamento e atividades biológicas de produtos naturais das esponjas monanchora arbuscula, aplysina sp. petromica ciocalyptoides e topsentia ophiraphidites, da ascídia didemnum ligulum e do octocoral carijoa riisei Isolantion and biological activities of secondary metabolites from the sponges monanchora aff. arbuscula, aplysina sp. petromica ciocalyptoides and topsentia ophiraphidies, from the ascidian didemnum ligulum and from the octocoral carijoa riisei

Química Nova, 2007
The investigation of extracts from six species of marine invertebrates yielded one new and several known natural products. Isoptilocaulin from the sponge Monanchora aff.
Miriam H. Kossuga, Simone P. de Lira, Andréa M. Nascimento, Maria Teresa P. Gambardella, Roberto G. S. Berlinck, Yohandra R. Torres, Gislene G. F. Nascimento, Eli F. Pimenta, Marcio Silva, Otávio H. Thiemann, Glaucius Oliva, André G. Tempone, Márcia S. C. Melhem, Ana O. de Souza, Fabio C. S. Galetti, Célio L. Silva, Bruno Cavalcanti, Claudia O. Pessoa, Manoel O. Moraes, Eduardo Hajdu, Solange Peixinho, Rosana M. Rocha   +21 more
doaj   +1 more source

From environmental heterogeneity to stability: Beta‐diversity stabilizes biomass across space

Ecology, Volume 107, Issue 9, September 2026.
Abstract Understanding how biodiversity influences ecosystem stability across heterogeneous landscapes is a central challenge in ecology. The spatial insurance hypothesis proposes that turnover in species composition stabilizes ecosystem processes in heterogeneous environments if species dominate in the habitats to which they are best adapted.
Benedikt Brunner, James G. Hagan, Jesper Hassellöv, Julia Mari Murata, Lara Colaço Martins, Pedro de La Patelliere, Elena Schrofner‐Brunner, Lars Gamfeldt   +7 more
wiley   +1 more source

Native habitat affinities predict fish invasions with post‐invasion habitat shifts

Journal of Animal Ecology, Volume 95, Issue 9, Page 1762-1777, September 2026.
Initial invasion success is gated by native pre‐adaptations, but post‐invasion establishment is characterized by habitat shifts. We demonstrate that forecasting risk based solely on native niches severely underestimates future ecological impacts, and we provide an empirically validated watchlist of future invaders.
Shahar Chaikin, Tal Gavriel, Avery Deveto, Shahar Malamud, Jonathan Belmaker   +4 more
wiley   +1 more source