Mixis in rotifers of the lineage 'Nevada', belonging to the Brachionus plicatilis species complex, under different feeding regimes

dc.contributor.author	Kostopoulou, V	en
dc.contributor.author	Miliou, H	en
dc.contributor.author	Krontira, Y	en
dc.contributor.author	Verriopoulos, G	en
dc.date.accessioned	2014-06-06T06:47:52Z
dc.date.available	2014-06-06T06:47:52Z
dc.date.issued	2007	en
dc.identifier.issn	1355557X	en
dc.identifier.uri	http://dx.doi.org/10.1111/j.1365-2109.2007.01783.x	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/3834
dc.subject	Brachionus	en
dc.subject	Hatchery	en
dc.subject	Mixis	en
dc.subject	Population structure	en
dc.subject	Rotifera	en
dc.subject.other	abundance	en
dc.subject.other	growth rate	en
dc.subject.other	hatchery	en
dc.subject.other	invertebrate	en
dc.subject.other	population structure	en
dc.subject.other	salinity	en
dc.subject.other	yeast	en
dc.subject.other	zooplankton	en
dc.subject.other	Brachionus	en
dc.subject.other	Brachionus plicatilis	en
dc.subject.other	Rotifera	en
dc.subject.other	Saccharomyces cerevisiae	en
dc.subject.other	Tetraselmis suecica	en
dc.title	Mixis in rotifers of the lineage 'Nevada', belonging to the Brachionus plicatilis species complex, under different feeding regimes	en
heal.type	journalArticle	en
heal.identifier.primary	10.1111/j.1365-2109.2007.01783.x	en
heal.publicationDate	2007	en
heal.abstract	A strain of Brachionus 'Nevada', which belongs to the Brachionus plicatilis species complex, and is commonly found in European hatcheries, was investigated in terms of its mixis potential. Two feeding regimes used for mass culturing were employed. Rotifer populations were fed on phytoplankton (Tetraselmis suecica) and either baker's yeast, Saccharomyces cerevisiae (treatments A) or Culture Selco® (treatments B). In order to promote mixis, the salinity of the culture medium was reduced from 40 to 20 g L-1. Indeed, the rotifer populations of lower salinity (A 20, B 20) showed a twofold increase in mixis rates compared with those of higher salinity (A 40, B 40). In addition, treatment A 20 showed significantly higher levels of mixis (22.59±2.07%) compared with B 20 (16.56±1.46%). The opposite trend was observed for the parthenogenetic growth rates (A 20: 0.46±0.01; B 20: 0.62±0.01). It is thus concluded that Culture Selco leads to a higher abundance of amictic ovigerous females, whereas yeast supports a higher abundance of males and mictic females carrying resting eggs. The two types of feeding regimes can be used for different purposes in a hatchery. © 2007 Blackwell Publishing Ltd.	en
heal.journalName	Aquaculture Research	en
dc.identifier.issue	10	en
dc.identifier.volume	38	en
dc.identifier.doi	10.1111/j.1365-2109.2007.01783.x	en
dc.identifier.spage	1093	en
dc.identifier.epage	1105	en