Parvilucifera sinerae (Alveolata, Myzozoa) is a Generalist Parasitoid of Dinoflagellates
Parvilucifera sinerae (Alveolata, Myzozoa) is a Generalist Parasitoid of Dinoflagellates
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DOI：
10.1016/j.protis.2012.11.004
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发表时间：
2013-03-01
期刊：
影响因子：
2.5
通讯作者：
Figueroa, Rosa I.
中科院分区：
文献类型：
--
作者：
Garces, Esther;Alacid, Elisabet;Figueroa, Rosa I.
本研究首先描述了寄生虫小萤光虫（Parvilucifera sinensis）在甲藻型宿主微小亚历山大藻（Alexandrum minutum）中的感染过程，包括感染过程中各甲藻和寄生虫阶段的形态。在此基础上，研究了433株微藻对中华假单胞菌的敏感性。该寄生蜂被发现能够感染Alexandrum属、Coolia属、Dinophysis属、Fragilidium属、Gambierdiscus属、Gymnastinium属、Gyrodinium属、Heterocapsa属、Kryptoperidinium属、Lepidodinium属、Ostreopsis属、Pentapharsodinium属、Protoceratium属、Scrippsiella属和Woloszynskia属的几种甲藻。也观察到菌株内的变异性，使得在相同的甲藻物种内，一些菌株被感染，而另一些则没有。同样，其他甲藻属的物种没有被感染，如Akashiwo，Amphidinium，Barrufeta，Bysmatrum，Karenia，Karlodinium，Prorocentrum和Takayama。此外，中华假单胞菌不能感染任何测试的附着菌、硅藻和绿藻物种。在筛选的天然样品中，对中华假单胞菌感染性敏感的甲藻属有Alexandrum、Coolia、Gonyaulax、Gymnastinium、Phalacroma、Protoperidinium和Scrippsiella。孢子囊大小与宿主大小成正比，孢子囊大小的变化影响其成熟时间。(c)2012 Elsevier GmbH. All rights reserved.
This study begins with a description of the infective process in the dinoflagellate type host Alexandrium minutum by a strain of the parasitoid, Parvilucifera sinerae, including the morphologies of the various dinoflagellate and parasitoid stages during the infection. Then, the susceptibility of 433 microalgal strains to P. sinerae infection was studied. The parasitoid was found to be capable of infecting several dinoflagellate species of the genera Alexandrium, Coolia, Dinophysis, Fragilidium, Gambierdiscus, Gymnodinium, Gyrodinium, Heterocapsa, Kryptoperidinium, Lepidodinium, Ostreopsis, Pentapharsodinium, Protoceratium, Scrippsiella, and Woloszynskia. Intra-strain variability was observed as well, such that within the same dinoflagellate species some strains were infected whereas others were not. Likewise, species of other dinoflagellate genera were not infected, such as Akashiwo, Amphidinium, Barrufeta, Bysmatrum, Karenia, Karlodinium, Prorocentrum, and Takayama. Moreover, P. sinerae was not able to infect any of the tested haptophyte, diatom, and chlorophyte species. In natural samples screened for P. sinerae infectivity, several dinoflagellate species of the genera Alexandrium, Coolia, Gonyaulax, Gymnodinium, Phalacroma, Protoperidinium, and Scrippsiella were identified as susceptible. Sporangia size was found to be proportional to the size of the host, and variations in the sporangia size were observed to influence their maturation time. (c) 2012 Elsevier GmbH. All rights reserved.