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Transformations of the ophiuroid axial complex as a result of the shifting of the madreporite to the oral sideстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 11 марта 2017 г.
- Авторы: Ezhova O.V., Egorova E.A., Malakhov V.V.
- Журнал: Biology Bulletin
- Том: 43
- Номер: 6
- Год издания: 2016
- Издательство: M A I K Nauka - Interperiodica
- Местоположение издательства: Russian Federation
- Первая страница: 494
- Последняя страница: 502
- DOI: 10.1134/S1062359016060091
- Аннотация: In comparison with Asteroidea, the axial complex of ophiuroids has some important features, which are the result of shifting of the madreporite from the aboral side to the oral side. In contrast to Asteroidea, the stone canal of ophiuroids connects with the water ring from the outside, not from the inside. In Ophiuroidea, the somatocoelomic perihaemal coelom is closer to the mouth than the axocoelomic ring. The water ring of ophiuroids is shifted to the oral side relative to the perihaemal coelomic rings. The genital coelom and gastric haemal ring are located on the outer side of the axial complex, whereas in Asteroidea, they are located on the inner side. The pericardial part of the axial organ is situated on the oral side. The interradial sections of the genital coelom and genital haemal ring are descended to the oral side. Our hypothesis considers that the ancestors of ophiuroids turned the aboral side of the animal to the substratum. It caused shifting of the madreporite to the oral side and closing of the anus.
- Добавил в систему: Ежова Ольга Владимировна