Kvadráty: 6052 6051 5751 6050 5951 5852
  Nálezy podle období
Zodariidae 0-19001901-19501951-20002001-2021
Zodarion italicum (Canestrini, 1868) Není ohrožený 2x 14x 16x

Zodarion italicum (Canestrini, 1868)

České jménomravčík italský
Stupeň ohroženíNení ohrožený
Nálezy16 nálezů, 6 kvadrátů
První nález 2000, M. Řezáč, Řezáč 2002
Poslední nález 2019 , Ondřej Machač
Areál rozšířeníEuropean - Me. [Boh.]
Fytogeografická oblastThermo
Původnost stanovišťclimax
Vlhkost stanovišťvery dry
StratumGround layer
Osvětlení stanovišťopen
Hojnost výskytuvery rare
Nadm. výška200

Literatura

© Ondřej Machač
Based on morphological characters, two species of the genus Zodarion, Z. hamatum and Zodarion italicum, were placed into the italicum group. The aim of this study was to evaluate similarity of these two species in respect of various aspects of their natural history and karyotypes. Both species had similar phenological patterns, being univoltine, but some specimens reached adulthood the same year before winter. Both representatives had nocturnal activity and were able to capture various ant species. Zodarion hamatum seems to be specialized on Myrmicinae ants, and Zodarion italicum on Formicinae ants. Zodarion hamatum showed more agile predatory behaviour than Zodarion italicum presumably due to specialization on Myrmicinae ants, which have lower population density. Both species are generalized mimics of bicoloured (orange-dark brown) ants, such as Lasius emarginatus; they performed similar courtship and mating. The two study species exhibited contrasting reproductive strategies. Zodarion hamatum spiders had higher fecundity than Zodarion italicum as a result of larger body size but Zodarion italicum had larger eggs than Z. hamatum. This is presumably an adaptation to different availability of prey ants. Both species had the same diploid chromosome number, sex chromosome system and pattern of X chromosome heteropycnosis in testes. Results support a very close relationship between these two Zodarion species.


© Oto Zimmermann

Statistiky

Dle měsíce v roce


Dle nadmořské výšky


Dle metody sběru (16 použitých nálezů)
Zodarion italicum (Canestrini, 1868) ESSamciSamiceMláďataNálezy
Individuální sběr3302
Zemní past7463011
Smyk6402
Neurčeno1001
 SamciSamiceMláďataNálezy

Dle biotopu (16 použitých nálezů)
Zodarion italicum (Canestrini, 1868) ESSamciSamiceMláďataNálezy
Skalní stepi na vápenci1001
Xerotermní travinobylinná společenstva2301
Suché křoviny6101
Neurčeno7566013
 SamciSamiceMláďataNálezy

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