Phylogenomic and morphological relationships among the botryllid ascidians (Subphylum Tunicata, Class Ascidiacea, Family Styelidae) [PDF]
Scientific Reports, 2021 Ascidians (Phylum Chordata, Class Ascidiacea) are a large group of invertebrates which occupy a central role in the ecology of marine benthic communities.
Marie L. Nydam +6 more
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A redescription of Syncarpa composita (Ascidiacea, Stolidobranchia) with an inference of its phylogenetic position within Styelidae [PDF]
ZooKeys, 2019 Two species of styelid colonial ascidians in the genus Syncarpa Redikorzev, 1913 are known from the northwest Pacific. The valid status of the lesser known species, Syncarpa composita (Tokioka, 1951) (type locality: Akkeshi, Japan), is assessed here.
Naohiro Hasegawa, Hiroshi Kajihara
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Morphological Characteristics, Mitochondrial Genome, and Evolutionary Insights Into a New Sea Squirt From the Beibu Gulf [PDF]
Ecology and EvolutionA new species of the genus Microcosmus was described in this study based on specimens collected from the coast of Xilian Town, Xuwen County, Zhanjiang, Guangdong Province, China.
Yichuan Zhang +10 more
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Novel budding mode in Polyandrocarpa zorritensis: a model for comparative studies on asexual development and whole body regeneration [PDF]
EvoDevo, 2019 Background In tunicates, the capacity to build an adult body via non-embryonic development (NED), i.e., asexual budding and whole body regeneration, has been gained or lost several times across the whole subphylum.
Marta Scelzo +8 more
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Putative stem cells in the hemolymph and in the intestinal submucosa of the solitary ascidian Styela plicata [PDF]
EvoDevo, 2019 Background In various ascidian species, circulating stem cells have been documented to be involved in asexual reproduction and whole-body regeneration. Studies of these cell population(s) are mainly restricted to colonial species.
Juan Jiménez-Merino +6 more
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Gonadal proliferation and reproductive cycle of the exotic sea squirt Cnemidocarpa amphora () (Pleurogona, Styelidae) sampled for the first time from the northern coast of Arabian Gulf in Saudi Arabia [PDF]
Brazilian Journal of Biology, 2023 Specimens of Cnemidocarpa amphora were collected monthly from the Arabian Gulf from September 2017 to August 2018. Parts of their gonads were prepared for histological testing. The gonads’ diameters varied by month.
N. A. AlQurashi, G. Ibrahim
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A phylogenomic framework and timescale for comparative studies of tunicates [PDF]
BMC Biology, 2018 Background Tunicates are the closest relatives of vertebrates and are widely used as models to study the evolutionary developmental biology of chordates. Their phylogeny, however, remains poorly understood, and to date, only the 18S rRNA nuclear gene and
Frédéric Delsuc +9 more
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Diversity, 2022 Compound styelid ascidians are distributed in all marine environments and usually exhibit high morphological plasticity and complexity. In particular, Botrylloides, Botryllus, and Symplegma species show high morphological variations leading to confusion ...
Lilian A. Palomino-Alvarez +3 more
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Frontiers in Cell and Developmental Biology, 2022 Colonial tunicates are the only chordates that regularly regenerate a fully functional whole body as part of their asexual life cycle, starting from specific epithelia and/or mesenchymal cells.
Lorenzo Ricci +8 more
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Global diversity of Ascidiacea. [PDF]
PLoS ONE, 2011 The class Ascidiacea presents fundamental opportunities for research in the fields of development, evolution, ecology, natural products and more. This review provides a comprehensive overview of the current knowledge regarding the global biodiversity of ...
Noa Shenkar, Billie J Swalla
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