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Statements

Subject Item
n2:RIV%2F60076658%3A12520%2F12%3A43883407%21RIV13-MZE-12520___
rdf:type
skos:Concept n14:Vysledek
dcterms:description
Sturgeon (Chondrostei, Acipenseriformes) are threatened or endangered species due to overfishing and environmental degradation causing disruption of natural reproduction. Commercial sturgeon aquaculture and conservation program requires broodfish management as well as biogeographical and biological knowledge. Therefore, control of sturgeon reproduction in captivity can become as a valid tool in the field of sustainable development. The main objectives of the present review were to summarize, describe and synthesize available data about neuroendocrine control of testicular development, spermiation induction, seminal plasma characteristics and factors affecting sperm quality. In sturgeon, puberty usually occurs late in life and adult males do not spawn on an annual basis. Gonadal differentiation and spermatogonia proliferation occurs at 1-2 and 2-3 year-old, respectively. In spermatogenesis, environmental stimuli affect hypothalamus to release GnRH, which induce FSH release from pituitary stimulating testicular androgenesis, which is involved in spermatogonial proliferation and spermatogenesis. At spawning season, GnRH stimulates LH production from pituitary, regulating 17 alpha,20 beta-dihydroxy-4-pregnen-3-one production in testis, which control sperm maturation. In captivity, hormonal treatment is essential to induce spermiation. Chemical and biochemical compounds of the seminal plasma are important to protect viability, motility and fertilizing capacity of spermatozoa. Several kinds of acrosomal enzymes have been identified in sturgeon seminal plasma; higher concentrations reported in the frozen/thawed than fresh sperm suggesting their origination from spermatozoa. Moreover, there are numerous factors that influence on sperm quality including temperature, methods for spermiation induction, stripping frequency and stress. Sturgeon (Chondrostei, Acipenseriformes) are threatened or endangered species due to overfishing and environmental degradation causing disruption of natural reproduction. Commercial sturgeon aquaculture and conservation program requires broodfish management as well as biogeographical and biological knowledge. Therefore, control of sturgeon reproduction in captivity can become as a valid tool in the field of sustainable development. The main objectives of the present review were to summarize, describe and synthesize available data about neuroendocrine control of testicular development, spermiation induction, seminal plasma characteristics and factors affecting sperm quality. In sturgeon, puberty usually occurs late in life and adult males do not spawn on an annual basis. Gonadal differentiation and spermatogonia proliferation occurs at 1-2 and 2-3 year-old, respectively. In spermatogenesis, environmental stimuli affect hypothalamus to release GnRH, which induce FSH release from pituitary stimulating testicular androgenesis, which is involved in spermatogonial proliferation and spermatogenesis. At spawning season, GnRH stimulates LH production from pituitary, regulating 17 alpha,20 beta-dihydroxy-4-pregnen-3-one production in testis, which control sperm maturation. In captivity, hormonal treatment is essential to induce spermiation. Chemical and biochemical compounds of the seminal plasma are important to protect viability, motility and fertilizing capacity of spermatozoa. Several kinds of acrosomal enzymes have been identified in sturgeon seminal plasma; higher concentrations reported in the frozen/thawed than fresh sperm suggesting their origination from spermatozoa. Moreover, there are numerous factors that influence on sperm quality including temperature, methods for spermiation induction, stripping frequency and stress.
dcterms:title
Sperm biology and control of reproduction in sturgeon: (I) testicular development, sperm maturation and seminal plasma characteristics Sperm biology and control of reproduction in sturgeon: (I) testicular development, sperm maturation and seminal plasma characteristics
skos:prefLabel
Sperm biology and control of reproduction in sturgeon: (I) testicular development, sperm maturation and seminal plasma characteristics Sperm biology and control of reproduction in sturgeon: (I) testicular development, sperm maturation and seminal plasma characteristics
skos:notation
RIV/60076658:12520/12:43883407!RIV13-MZE-12520___
n14:predkladatel
n15:orjk%3A12520
n3:aktivita
n6:P
n3:aktivity
P(ED2.1.00/01.0024), P(GA523/09/1793), P(GAP502/11/0090), P(IAA608030801), P(LC06073), P(ME10015), P(QH82119)
n3:cisloPeriodika
3
n3:dodaniDat
n16:2013
n3:domaciTvurceVysledku
n10:3624900 n10:5876001 n10:1593579 n10:6919707
n3:druhVysledku
n7:J
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
170408
n3:idVysledku
RIV/60076658:12520/12:43883407
n3:jazykVysledku
n19:eng
n3:klicovaSlova
Testis; Sperm quality; Spermiation induction; Spermatogenesis; Physiology; Neuroendocrinology
n3:klicoveSlovo
n12:Testis n12:Spermiation%20induction n12:Sperm%20quality n12:Physiology n12:Spermatogenesis n12:Neuroendocrinology
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[590B263D7A03]
n3:nazevZdroje
Reviews In Fish Biology And Fisheries
n3:obor
n17:GL
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
4
n3:projekt
n4:QH82119 n4:IAA608030801 n4:ME10015 n4:GAP502%2F11%2F0090 n4:GA523%2F09%2F1793 n4:LC06073 n4:ED2.1.00%2F01.0024
n3:rokUplatneniVysledku
n16:2012
n3:svazekPeriodika
22
n3:tvurceVysledku
Gela, David Rodina, Marek Alavi, Sayyed Mohammad Hadi Linhart, Otomar
n3:wos
000307505000010
s:issn
0960-3166
s:numberOfPages
23
n20:doi
10.1007/s11160-012-9268-4
n18:organizacniJednotka
12520