Volvox sect. Volvox is an interesting group of green algae; it comprises mostly monoicous species, but evidence suggests an evolution towards dioicy. Based on cultured strains originating from Thailand, we describe Volvox longispiniferus, a novel species in Volvox sect. Volvox. This species is distinguished from others in the section by the large number of sperm packets in its monoicous sexual spheroids and by the long spines on its zygote wall. Phylogenetic analyses indicate that V. longispiniferus is distinct from the other species of two monophyletic groups within Volvox sect. Volvox. In addition, the novel species produces more zygotes when different cultures are combined compared with a single culture, suggesting a preference for outcrossing.

沃尔沃教派 沃尔沃克斯是一群有趣的绿藻。它主要由单性物种组成，但有证据表明，它向二叠纪进化。基于源自泰国的培养菌株，我们描述了Volvox longispiniferus，Volvox教派中的新物种。团藻。在该节中，该物种与其他物种的区别在于其单性有性球体中有大量的精子包和合子壁上的长刺。系统发育分析表明，V。longispiniferus与Volvox教派中的两个单系群体的其他物种不同。沃尔沃。另外，当将不同的培养物组合在一起时，与单一的培养物相比，该新物种会产生更多的受精卵，这表明它们更倾向于杂交。