Results 21 to 30 of about 3,793 (125)
SPERM CHEMOTAXIS IN OIKOPLEURA DIOICA FOL, 1872 (UROCHORDATA: LARVACEA)
The Biological Bulletin, 1983 An alcohol extract of unfertilized eggs of the larvacean, Oikopleura dioica, can attract sperm over a distance of at least 80 µm from an artificial source. The sperm, which normally swim in wide circles or straight lines, alter their path to form small loops between straight or slightly curved segments directed up the gradient.
Richardl, Miller, Kenneth R, King
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Zoological Letters, 2017 Background Tunic is a cellulosic, integumentary matrix found in tunicates (Subphylum Tunicata or Urochordata). The tunics of some ascidian species and pelagic tunicates, such as salps, are nearly transparent, which is useful in predator avoidance ...
Hiroshi Kakiuchida +3 more
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Physical properties of the tunic in the pinkish-brown salp Pegea confoederata (Tunicata: Thaliacea)
Zoological Letters, 2018 Background Invisibility in the water column is a crucial strategy for gelatinous zooplanktons in avoiding detection by visual predators, especially for animals distributed in the euphotic zone during the daytime; i.e., surface dwellers that do not ...
Daisuke Sakai +3 more
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Zoological Letters, 2017 Background Hox gene clusters with at least 13 paralog group (PG) members are common in vertebrate genomes and in that of amphioxus. Ascidians, which belong to the subphylum Tunicata (Urochordata), are phylogenetically positioned between vertebrates and ...
Yuka Sekigami +7 more
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Brazilian Journal of Oceanography, 1992 The diet of Sagitta friderici off Ubatuba region, São Paulo State, was studied in March, 1989. Specimens were collected with a closing-net during three days at six hours' intervals (00:00; 06:00; 12:00; 18:00 h), at a fixed station of 38 m depth.
Luz Amelia Vega-Pérez, Tsui Hua Liang
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Ascidians (Urochordata: Ascidiacea) from Arraial do Cabo, Rio de Janeiro, Brazil [PDF]
Iheringia. Série Zoologia, 2005 Simple and colonial ascidians were collected at different depths at Arraial do Cabo, Rio de Janeiro, between 2000 and 2003. The collection here presented includes representatives of the families Clavelinidae (Clavelina oblonga), Polycitoridae (Cystodytes dellechiajei), Polyclinidae (Polyclinum constellatum and Polyclinum molle sp.
Rocha, Rosana M. da +1 more
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Acta Zoológica LilloanaSe reportan nuevos registros de zooplancton en el Pacífico tropical mexicano, con un énfasis particular en apendicularias. Las muestras se recolectaron entre enero de 2023 y junio de 2024 en diversas localidades utilizando redes de plancton, así como ...
Carlos Alberto Sandoval-Navarrete +5 more
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BMC Evolutionary Biology, 2005 Background Merlin, the product of the Neurofibromatosis type 2 (NF2) tumor suppressor gene, belongs to the ezrin-radixin-moesin (ERM) subgroup of the protein 4.1 superfamily, which links cell surface glycoproteins to the actin cytoskeleton.
Omelyanchuk Leonid V +4 more
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Revista Chilena de Historia Natural, 2002 La morfología de los "piures" (Urochordata: Tunicata) es altamente variable, mostrando diferencias hábitat-específicas con una base intra- o interespecífica, lo cual dificulta la comprensión de sus significados taxonómicos, ecológicos y evolutivos. En el
MARCELA ASTORGA +3 more
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The Biological Bulletin, 1999 The morphology and cellulosic composition of the tunic was studied in pelagic tunicates (3 pyrosomas, 2 doliolids, and 13 salps). The tunic is transparent and gelatinous, consisting of an electron-dense cuticular layer with a fibrous tunic matrix. The thickness and density of the cuticular layer and of the tunic matrix differ from species to species ...
E, Hirose +3 more
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