FIRST REPORT OF INTERSEX IN THE SIGNAL CRAYFISH PACIFASTACUS LENIUSCULUS (DANA, 1852)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12520%2F14%3A43886914" target="_blank" >RIV/60076658:12520/14:43886914 - isvavai.cz</a>

Result on the web

<a href="http://booksandjournals.brillonline.com/content/journals/10.1163/15685403-00003370" target="_blank" >http://booksandjournals.brillonline.com/content/journals/10.1163/15685403-00003370</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1163/15685403-00003370" target="_blank" >10.1163/15685403-00003370</a>

Result language

angličtina

Original language name

FIRST REPORT OF INTERSEX IN THE SIGNAL CRAYFISH PACIFASTACUS LENIUSCULUS (DANA, 1852)

Original language 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. Thespecimen 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 consideredas 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.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EG - Zoology

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Crustaceana

ISSN

0011-216X

e-ISSN

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Volume of the periodical

87

Issue of the periodical within the volume

13

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

8

Pages from-to

1559-1566

UT code for WoS article

000345494400005

EID of the result in the Scopus database

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