Radiation of Sacoglossa (Opisthobranchia, Gastropoda) as a function of long term retention of chloroplasts, and usage of their metabolites

Sacoglossa（后鳃亚纲、腹足纲）的辐射作为叶绿体长期保留及其代谢物利用的函数

• 批准号: 5362386
• 负责人: Professorin Dr. Heike Wägele
• 金额: --
• 依托单位: Zentrum für Molekulare Biodiversitätsforschung (zmb)
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2002
• 资助国家: 德国
• 起止时间: 2001-12-31 至 2008-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5362386?language=en
• 关键词: Radiation; Sacoglossa; Opisthobranchia; Gastropoda; function

Symbiotic relationship between members of the Nudibranchia and the algal taxon Symbiodinium are known, although efficiency and reliability of the symbiosis is hardly investigated for the Nudibranchia. Ability to house and use zooxanthellae seems to have evolved separately different times within the Nudibranchia, since this phenomenon occurs in other familie of the clade Cladobranchia. Nevertheless it has to be emphasized, that many records of the symbiotic relationship have been documented by histological means, and photosynthetic activity has been measured in only very few species. Within the genus Phyllodesmium serveral species are well known to house zooxanthellae, and for one species, in situ measurements of the photosynthetic activity is documented. In this study we want to investigate the role of symbiotic algae in the possible radiation of this aeolid genus, Phyllodesmium, which is known from the tropic waters by about 18 species and which is described to have evolved special morphological adaptations to the housing of zooxanthellae.

裸鳃亚纲成员与藻类分类群共生关系是已知的，尽管对裸鳃亚纲的共生效率和可靠性几乎没有研究。容纳和利用虫黄藻的能力似乎是在裸鳃纲的不同时期分别进化出来的，因为这种现象也发生在枝鳃纲的其他分支中。然而，必须强调的是，许多关于共生关系的记录是通过组织学手段记录下来的，而光合作用活动仅在极少数物种中被测量过。在Phyllodesmium属中，有几个物种都有虫黄藻，其中一个物种的光合作用活动的原位测量是有记录的。在这项研究中，我们想要研究共生藻类在这种风状属（Phyllodesmium）的可能辐射中的作用，该属在热带水域已知约18种，并且被描述为进化出特殊的形态适应虫黄藻的外壳。