Self and non self recognition in a marine sponge, Halichondria okadai

研究了冈田软海绵（Halichondriaokadai）的自我和非自我识别功能。当成年个体与日本软海绵个体接触时，它们会表现出排斥反应。H.冈代也将大多数同种异体的生物识别为非我。此外，在从母体到幼体的变态过程中，它们表现出同胞之间的异源识别能力，即两个幼体在接触区域相互融合或排斥。In H. okadai，H.结果表明，日本血吸虫的同种异体排斥反应与同种异体排斥反应不同，成年个体的同种异体排斥反应与青年个体的同种异体排斥反应也不同。探讨了H.冈代，我们已经检查了自然种群和培养的同胞之间的融合和排斥的频率。

The function of self and nonself recognition in a marine sponge Halichondria okadai was studied. An adult individual showed rejection against the individual of Halichondria japonica, when they came in contact with each other. The individual of H. okadai also recognized most of allogeneic ones as nonself. Furthermore, just after the metamorphosis of planktonic larvae from a mother individual into young individuals, they showed the ability of allorecognition among their siblings, that is, two young individuals fused with each other or rejected at their contact area. In H. okadai, the manner of xenorejection against individuals of H. japonica was different from that of allorejection, and the manner of allorejection of adult individuals was also different from the manner shown by young individuals. Then, to discuss the genetic control of allorecognition in H. okadai, we have examined the frequency of fusion and rejection among natural populations and among cultured siblings.