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Statements

Subject Item
n2:RIV%2F60076658%3A12520%2F14%3A43886914%21RIV15-GA0-12520___
rdf:type
skos:Concept n18:Vysledek
rdfs:seeAlso
http://booksandjournals.brillonline.com/content/journals/10.1163/15685403-00003370
dcterms:description
The reproductive strategies of species of non-indigenous crayfish make an important issue in astacological research. Although crayfish reproduction has been well studied, there is little information available on the occurrence of intersexuality. We report the first evidence of intersex in the signal crayfish, Pacifastacus leniusculus (Dana, 1852). An intersexual specimen was found among five tested signal crayfish. Morphology revealed both male and female genital openings, as well as male gonopods. The specimen superficially appeared male but contained both testes and ovaries, with an atypical dispersed structure. Sperm was obtained from this crayfish. Histology showed both spermatocytes and oocytes. The gonadosomatic index (GSI = 3.79) was considered as a morphometric parameter of the intersexual crayfish. The ova present in the intersex male raised its GSI to the three-fold of that of normal males. The reproductive strategies of species of non-indigenous crayfish make an important issue in astacological research. Although crayfish reproduction has been well studied, there is little information available on the occurrence of intersexuality. We report the first evidence of intersex in the signal crayfish, Pacifastacus leniusculus (Dana, 1852). An intersexual specimen was found among five tested signal crayfish. Morphology revealed both male and female genital openings, as well as male gonopods. The specimen superficially appeared male but contained both testes and ovaries, with an atypical dispersed structure. Sperm was obtained from this crayfish. Histology showed both spermatocytes and oocytes. The gonadosomatic index (GSI = 3.79) was considered as a morphometric parameter of the intersexual crayfish. The ova present in the intersex male raised its GSI to the three-fold of that of normal males.
dcterms:title
FIRST REPORT OF INTERSEX IN THE SIGNAL CRAYFISH PACIFASTACUS LENIUSCULUS (DANA, 1852) FIRST REPORT OF INTERSEX IN THE SIGNAL CRAYFISH PACIFASTACUS LENIUSCULUS (DANA, 1852)
skos:prefLabel
FIRST REPORT OF INTERSEX IN THE SIGNAL CRAYFISH PACIFASTACUS LENIUSCULUS (DANA, 1852) FIRST REPORT OF INTERSEX IN THE SIGNAL CRAYFISH PACIFASTACUS LENIUSCULUS (DANA, 1852)
skos:notation
RIV/60076658:12520/14:43886914!RIV15-GA0-12520___
n3:aktivita
n5:S n5:P
n3:aktivity
P(ED2.1.00/01.0024), P(GAP505/12/0545), P(GPP502/12/P177), S
n3:cisloPeriodika
13
n3:dodaniDat
n10:2015
n3:domaciTvurceVysledku
n7:4388259 n7:9615210 n7:2638347 n7:1760173
n3:druhVysledku
n9:J
n3:duvernostUdaju
n20:S
n3:entitaPredkladatele
n17:predkladatel
n3:idSjednocenehoVysledku
16964
n3:idVysledku
RIV/60076658:12520/14:43886914
n3:jazykVysledku
n8:eng
n3:klicovaSlova
sexuality; crustacea; spermatozoa; ultrastructure; parastacidae; 1882 decapoda; cherax-quadricarinatus; burrowing crayfish; red claw crayfish; partial protandric hermaphroditism
n3:klicoveSlovo
n6:1882%20decapoda n6:red%20claw%20crayfish n6:spermatozoa n6:ultrastructure n6:crustacea n6:burrowing%20crayfish n6:partial%20protandric%20hermaphroditism n6:sexuality n6:parastacidae n6:cherax-quadricarinatus
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[35E5C865C362]
n3:nazevZdroje
Crustaceana
n3:obor
n16:EG
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
4
n3:projekt
n13:ED2.1.00%2F01.0024 n13:GPP502%2F12%2FP177 n13:GAP505%2F12%2F0545
n3:rokUplatneniVysledku
n10:2014
n3:svazekPeriodika
87
n3:tvurceVysledku
Yazicioglu, Buket Linhartová, Zuzana Niksirat Hashjin, Hamid Kozák, Pavel
n3:wos
000345494400005
s:issn
0011-216X
s:numberOfPages
8
n14:doi
10.1163/15685403-00003370
n19:organizacniJednotka
12520