Why do sagas not thrive in captivity breeding?

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F05%3A12359" target="_blank" >RIV/60460709:41210/05:12359 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

čeština

Original language name

Proč se nám nedaří kobylky ságy?

Original language description

Sagas are predatory, flightless, large bush-crickets, which are characteristic for steppe and forest steppe habitats. Their appearance is so distinctive that genera determination causes no difficulties even for amateur biologists. From the genus Saga Charp., 1825 the following European species are known (Harz 1969): Saga natoliae Serville, 1983; S. rhodiensis Salfi, 1929; S. hellenica Kaltenbach, 1967; S. rammei Kaltenbach, 1965; S. campbelli Uvarov, 1921 and S. pedo Pallas 1771. With the exception of S. pedo all listed species have separate sexes, show marked sexual dimorphism and we predict that oviposition precedes copulation. However, only females have been recorded for S. pedo and they are known to lay unfertilized eggs from which only female offspring emerge. Having no hind wings and thus being flightless, the sagas manifest a low vagility. These bush-crickets are therefore very vulnerable to extinction of anthropogenic nature. There are many causes for the decline of sagas. With

Czech name

Proč se nám nedaří kobylky ságy?

Czech description

Sagas are predatory, flightless, large bush-crickets, which are characteristic for steppe and forest steppe habitats. Their appearance is so distinctive that genera determination causes no difficulties even for amateur biologists. From the genus Saga Charp., 1825 the following European species are known (Harz 1969): Saga natoliae Serville, 1983; S. rhodiensis Salfi, 1929; S. hellenica Kaltenbach, 1967; S. rammei Kaltenbach, 1965; S. campbelli Uvarov, 1921 and S. pedo Pallas 1771. With the exception of S. pedo all listed species have separate sexes, show marked sexual dimorphism and we predict that oviposition precedes copulation. However, only females have been recorded for S. pedo and they are known to lay unfertilized eggs from which only female offspring emerge. Having no hind wings and thus being flightless, the sagas manifest a low vagility. These bush-crickets are therefore very vulnerable to extinction of anthropogenic nature. There are many causes for the decline of sagas. With

Type

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

CEP classification

EG - Zoology

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2005

Confidentiality

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

Name of the periodical

Akva tera fórum

ISSN

1214-9349

e-ISSN

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Volume of the periodical

1

Issue of the periodical within the volume

11

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

4

Pages from-to

62-65

UT code for WoS article

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EID of the result in the Scopus database

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