Michibata H, Terada T, Anada N, Yamakawa K, Numakunai T
Biol Bull. 1986 Dec;171(3):672-681. doi: 10.2307/1541632.
The vanadium, iron, and manganese contents of 15 species of solitary ascidians belonging to the suborders Phlebobranchia and Stolidobranchia were determined by thermal neutron activation analysis. Vanadium was detectable in all species examined. In general, the vanadium content in various tissues of the Phlebobranchia was considerably higher than the iron and manganese contents. The blood cells especially contained a large amount of vanadium. The highest value (21 µg vanadium/mg dry weight) was obtained from blood corpuscles of Ascidia ahodori. Species in the suborder Stolidobranchia, on the other hand, had smaller quantities of vanadium in comparison with those in the suborder Phlebobranchia. The iron and manganese contents did not differ greatly between the two suborders. The data are considered in the light of physiological roles of these transition metals in ascidians.
通过热中子活化分析测定了属于海鞘亚目海鞘纲和海鞘亚目的15种独居海鞘的钒、铁和锰含量。在所检测的所有物种中都能检测到钒。一般来说，海鞘纲各组织中的钒含量明显高于铁和锰含量。血细胞尤其含有大量钒。从阿霍多里海鞘的血球中获得了最高值（21微克钒/毫克干重）。另一方面，海鞘亚目的物种与海鞘亚目的物种相比，钒的含量较少。两个亚目之间的铁和锰含量差异不大。根据这些过渡金属在海鞘中的生理作用对数据进行了分析。
