کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2061774 1076526 2015 23 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
New Insights into the Parasitoid Parvilucifera sinerae Life Cycle: The Development and Kinetics of Infection of a Bloom-forming Dinoflagellate Host
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
New Insights into the Parasitoid Parvilucifera sinerae Life Cycle: The Development and Kinetics of Infection of a Bloom-forming Dinoflagellate Host
چکیده انگلیسی

Parvilucifera sinerae is a parasitoid of dinoflagellates, the major phytoplankton group responsible for harmful algal bloom events. Here we provide a detailed description of both the life cycle of P. sinerae, based on optical, confocal, and transmission electron microscopy observations, and its infection kinetics and dynamics. P. sinerae completes its life cycle in 3–4 days. The zoospore encounters and penetrates the host cell within 24 h after its addition to the host culture. Inside the host, the parasitoid develops a trophocyte, which constitutes the longest stage of its life cycle. The trophocyte replicates and divides by schizogony to form hundreds of new zoospores contained within a sporangium. Under laboratory conditions, P. sinerae has a short generation time, a high rate of asexual reproduction, and is highly prevalent (up to 80%) in the Alexandrium minutum population. Prevalence was shown to depend on both the parasitoid inoculum size and host density, which increase the encounter probability rate. The parasitoid infection parameters described in this study are the first reported for the genus Parvilucifera. They show that P. sinerae is well-adapted to its dinoflagellate hosts and may be an important factor in the termination of A. minutum blooms in the natural environment.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Protist - Volume 166, Issue 6, December 2015, Pages 677–699
نویسندگان
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