A fehér busa (Hypophthalmichthys molitrix) termékenység vizsgálata a Balatonban

A tétel rövid nézete
dc.contributor.advisorJózsa, Vilmos
dc.contributor.advisorKövér, László
dc.contributor.authorHernádi, Béla
dc.contributor.departmentDE--ATC--Mezőgazdaság- Élelmiszertudományi és Környezetgazdálkodási Karhu_HU
dc.date.accessioned2013-05-29T07:31:44Z
dc.date.available2013-05-29T07:31:44Z
dc.date.created2013-04
dc.date.issued2013-05-29T07:31:44Z
dc.description.abstractTo improve fisheries yield and control algal blooms silver carps (Hypophthalmichthys. molitrix) were introduced to Lake Balaton in 1972. Silver carps were introduced to Lake Balaton between 1972−1983. During this period, 1.5 million pieces of silver carp with 3000 tons of total biomass, with an average weight of 200-250 grams were stocked. The phenotypic identification showed that the 90 % of the studied fish were hybrids. Our aim was to explore the seasonal changes in the fecundity and gonado-somatic index (GSI %) of silver carp in Lake Balaton. Between March and November of 2011, 35 female silver carp were collected. Body mass of fish ranged between 13−35 kg (20.5±5.1; mean±SD). The GSI varied between 12-28% (19±4%), while the total number of eggs in gonads ranged between 0.82×105 and 3.71×105 (1.61×105±0.84×105). Compared to other stocks, both GSI and fecundity of silver carps are high in Lake Balaton. In addition, seasonal changes in the number and development state of eggs indicated that silver carp may spawn in Lake Balatonhu_HU
dc.description.courseTermészetvédelmi mérnökihu_HU
dc.description.degreeMSc/MAhu_HU
dc.format.extent48hu_HU
dc.identifier.urihttp://hdl.handle.net/2437/169591
dc.language.isohuhu_HU
dc.rights.accessno_restrictionhu_HU
dc.subjectBalatonhu_HU
dc.subjectfehér busahu_HU
dc.subject.dspaceDEENK Témalista::Biológiai tudományok::Természetvédelemhu_HU
dc.titleA fehér busa (Hypophthalmichthys molitrix) termékenység vizsgálata a Balatonbanhu_HU
dc.title.translatedFecundity of silver carp (Hypophthalmichthys. molitrix) in Lake Balatonhu_HU
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Hallgatói dolgozatok (Mezőgazdaság-, Élelmiszertudományi és Környezetgazdálkodási Kar)