کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2423689 1552925 2010 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Out-of-season gamete production in Strongylocentrotus droebachiensis: Photoperiod and temperature manipulation
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم آبزیان
پیش نمایش صفحه اول مقاله
Out-of-season gamete production in Strongylocentrotus droebachiensis: Photoperiod and temperature manipulation
چکیده انگلیسی

The natural spawning of Strongylocentrotus droebachiensis is limited to late winter into early spring. In order to reduce the cost of urchin production, out-of-season gamete production is necessary. This study attempted to condition broodstock for out-of-season gamete production through the use of two different photoperiod and temperature regimes: a Constant Spring and an Advanced year; hypothesized to induce maturation through suspension or advancement of the gametogenic cycle, respectively. Viable gametes were successfully produced out-of-season with fertilization and hatch rates equal to or surpassing the levels recorded for wild urchin's in-season. In addition, specific fecundity was significantly higher in out-of-season conditioned urchins compared to the in-season wild urchins. Histological techniques proved that gametogenesis was both suspended and advanced through manipulation of the photoperiod and temperature. In addition, several important observations were made regarding reproductive physiology in the green sea urchin, the implications of which are important to the economic development of the green sea urchin aquaculture industry and management of wild stocks.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aquaculture - Volume 303, Issues 1–4, 24 May 2010, Pages 77–85
نویسندگان
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