Chimerism following fusion in a colonial ascidian (Urochordata
Brachyury (T) gene expression and notochord development in Oikopleura longicauda (Appendicularia, Urochordata
Time to first swimming was positively correlated with egg diameter overall and for the Spiralia, Echinodermata, and Urochordata
Chemotactic responses of tunicate (Urochordata
, Ascidiacea) hemocytes in vitro.
Fine structure of the photoreceptor and cerebral ganglion of the tadpole larva of Amaroucium constellatum (Verrill) (Subphylum: Urochordata
; Class: Ascidiacea).
The phenomenon has been studied in various species in different phyla (e.g., Porifera, Cnidaria, Bryozoa, and Urochordata
), and the significance of the fusion and the rejection to survival has been discussed.
In the phylum Chordata, although Hb is nearly universally expressed in members of the subphylum Vertebrata, it has not been identified in any members of the subphyla Urochordata
Ascidians (subphylum Urochordata
, class Ascidiacea) are ubiquitous marine animals.
The phylum Chordata consists of the subphyla Urochordata
(tunicates), Cephalochordata (amphioxus), and Vertebrata.
In the present study, juveniles of the invertebrate ascidian chordate Molgula pacifica (belonging to the subphylum Urochordata
), in which five ectodermal ampullar appendages grow out from the body wall of an early juvenile, were examined for two proteins that are known to be involved in the outgrowth of arthropod and vertebrate limbs.
) y quetognatos (Chaetognatha) del Parque Nacional Isla del Coco, Costa Rica.