Results 21 to 30 of about 589 (133)

Aging in the colonial chordate, Botryllus schlosseri. [PDF]

Invertebr Reprod Dev, 2015
What mechanisms underlie aging? One theory, the wear-and-tear model, attributes aging to progressive deterioration in the molecular and cellular machinery which eventually lead to death through the disruption of physiological homeostasis. The second suggests that life span is genetically programmed, and aging may be derived from intrinsic processes ...
Munday R, Rodriguez D, Di Maio A, Kassmer S, Braden B, Taketa DA, Langenbacher A, De Tomaso A.   +7 more
europepmc   +4 more sources

Extensive Fouling of Eelgrass (<i>Zostera marina</i> L.) Reproductive Shoots by Invasive Tunicates-A Potential Threat to Meadow Reproductive Output? [PDF]

Ecol Evol
Here, we document through field observations and photographs, the extensive fouling of seed‐bearing Z. marina reproductive shoots by invasive tunicates in a Cape Cod meadow during late spring/early summer 2025. Such fouling may block seed release and/or inhibit dispersal which may reduce meadow reproductive success.
Scavo Lord K, Bennett-Smith M, Novak AB.
europepmc   +2 more sources

Mechanical resilience of the sessile tunicate Botryllus schlosseri.

J Exp Biol, 2023
ABSTRACT We demonstrate that the sessile tunicate Botryllus schlosseri is remarkably resilient to applied loads by attaching the animals to an extensile substrate subjected to quasistatic equiradial loads. Animals can withstand radial extension of the substrate to strain values as high as 20% before they spontaneously detach.
Kwon Y, Singh S, Rodriguez D, Chau AL, Pitenis AA, De Tomaso AW, Valentine MT.   +6 more
europepmc   +3 more sources

Urochordate histoincompatible interactions activate vertebrate-like coagulation system components. [PDF]

PLoS ONE, 2008
The colonial ascidian Botryllus schlosseri expresses a unique allorecognition system. When two histoincompatible Botryllus colonies come into direct contact, they develop an inflammatory-like rejection response.
Matan Oren, Marie-line Escande, Guy Paz, Zvi Fishelson, Baruch Rinkevich   +4 more
doaj   +1 more source

An elongated COI fragment to discriminate botryllid species and as an improved ascidian DNA barcode

Scientific Reports, 2021
Botryllids are colonial ascidians widely studied for their potential invasiveness and as model organisms, however the morphological description and discrimination of these species is very problematic, leading to frequent specimen misidentifications.
Marika Salonna, Fabio Gasparini, Dorothée Huchon, Federica Montesanto, Michal Haddas-Sasson, Merrick Ekins, Marissa McNamara, Francesco Mastrototaro, Carmela Gissi   +8 more
doaj   +1 more source

Tunicate Eco‐Evo‐Devo laboratory in IMS‐METU

genesis, Volume 61, Issue 6, November 2023., 2023
Summary I completed my undergraduate education in Atatürk University, Education Faculty, Biology Department. Then pursued my graduate education at the Biology Department of Mersin University. Both my master's and PhD theses were on the biological and population genetics features of various fish species. My initial encounter with tunicates dates back to
Arzu Karahan
wiley   +1 more source

Colony specificity in Botrylloides leachi. II. Cellular aspects of the non-fusion reaction [PDF]

Invertebrate Survival Journal, 2007
We continued our study on fusion and non-fusion reactions in the compound ascidian Botrylloides leachi with particular attention to the role of hemocytes in the induction of the strong cytotoxic reaction observed when genetically incompatible colonies ...
L Ballarin, G Zaniolo
doaj   +2 more sources

Phagocytosis in the colonial ascidian Botryllus schlosseri

Developmental & Comparative Immunology, 1994
Phagocytosis by Botryllus schlosseri hemocytes is influenced by temperature, pH, concentration, and physicochemical properties of the test particles and requires Ca2+ or Mg2+ ions to occur. Phagocytes recognize glucosyl or mannosyl residues on the surface of yeast cells, and a respiratory burst is associated with phagocytosis, as indicated by increased
BALLARIN, LORIANO, CIMA, FRANCESCA, SABBADIN A.   +2 more
openaire   +3 more sources

Vascular regeneration in a basal chordate is due to the presence of immobile, bi-functional cells. [PDF]

PLoS ONE, 2014
The source of tissue turnover during homeostasis or following injury is usually due to proliferation of a small number of resident, lineage-restricted stem cells that have the ability to amplify and differentiate into mature cell types.
Brian P Braden, Daryl A Taketa, James D Pierce, Susannah Kassmer, Daniel D Lewis, Anthony W De Tomaso   +5 more
doaj   +1 more source

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