Zodarion rubidum Simon, 1914 [mravčík skalní]

Kvadráty: 5547 6061 7164 5862 7165 6765 5852 5751 6967 6474 7161 7266 6368 7066 7267 5552 7162 7065 6569 7069 6469 5746 7168 5850 7171 6570 6970 7063 5954 5446 6663 5853 5854

	Records by time
	Zodariidae	0-1900	1901-1950	1951-2000	2001-2021
Zodarion rubidum Simon, 1914 Not endangered			21x	62x	83x

Zodarion rubidum Simon, 1914

Czech name	mravčík skalní
Threat level	Not endangered
Records	83 nálezů, 33 kvadrátů
First record	1979, A. Kůrka, Kůrka 2000b
Last record	2021 , Filip Trnka
Distribution area	European - ME
Phytogeographic area	Thermo
Původnost stanovišť	climax, semi-natural
Humidity	very dry
Stratum	Ground layer
Osvětlení stanovišť	open
Hojnost výskytu	rare probably
Altitude	200-400

Bibliography

Ant‐eating spider maintains specialist diet throughout its ontogeny.

Predators should be selected to maximize their fitness by catching the most profitable prey. As predators grow in size, they often shift their preferences to larger prey during the course of development. Alike generalist predators, specialized predators should also shift to larger prey within the pool of focal prey. Here, we have studied the natural diet of a specialized ant‐eating spider Zodarion rubidum by means of molecular methods. We tested the hypothesis of a trophic shift during postembryonic ontogenesis and if there is a difference in the diet between sexes due to sexual dimorphism. In addition, a feeding trial was performed to estimate the time at which prey DNA can be detected. The diet of all stages consisted solely of ants (nine genera), thus confirming their strict ant specialization. There was no shift in prey size or prey type during ontogenetic development, but the diversity of prey declined with age. In adult males, very few prey were detected. The feeding trial showed that prey DNA can be detected inside the spider’s gut up to 2 weeks after feeding.

Geographical sexual size dimorphism in an ant-eating spider, Zodarion rubidum (Araneae: Zodariidae)

Within-species variation in body size of males and females of an ant-eating spider Zodarion rubidum was studied by analysing 15 populations across Europe. The relationship between the body size of both sexes was allometric with female-biased sexual size dimorphism. Body size of males did not change with latitude or temperature, while that of females changed significantly with temperature. Larger females were found in regions with higher temperature which is presumably a result of an optimal climate: higher temperature and longer season provide higher prey availability which accelerates the growth rate of females, leading to a larger body size. As female size varied more than male size, a sexual size dimorphism cline was observed in Zodarion rubidum. Larger sexual size dimorphism was found in warmer regions. These results thus suggest that environmental conditions (temperature) influence intraspecific variation in sexual size dimorphism in Zodarion rubidum.

Zodarion rubidum Simon, 1914; Railroad riders?

Is Zodarion rubidum railroad rider?!

The first record of Zodarion rubidum and Ostearius melanopygius for Slovakia (Arachnida: Araneae: Zodariidae, Linyphiidae)

Gallery

Statistics

By month

By altitude

By collecting method (83 used records)

Zodarion rubidum Simon, 1914 ES	Males	Females	Juveniles	Records
Individuální sběr	7	12	5	15
Neurčeno	1	1	0	20
Zemní past	94	46	0	36
Pozorování	7	8	0	4
Prosev	1	3	37	8
	Males	Females	Juveniles	Records

By biotope (83 used records)

Zodarion rubidum Simon, 1914 ES	Males	Females	Juveniles	Records
Haldy a výsypky	5	2	0	2
Těžebny písku a jiných nezpevněných hornin	10	8	0	5
Neurčeno	48	31	3	43
Ruderály	5	6	0	2
Nízké xerofilní křoviny	10	2	0	2
Kamenolomy	1	2	0	3
Vřesoviště nižších poloh	11	6	0	2
Železniční náspy	1	1	35	5
Zahrady	2	3	0	1
Bylinné porosty břehů	0	0	0	1
Písčiny	1	2	0	4
Ostatní pole	1	0	0	1
Suché louky	3	7	4	9
Okraje silnic	10	0	0	2
Xerotermní travinobylinná společenstva	2	0	0	1
	Males	Females	Juveniles	Records

Zodarion rubidum Simon, 1914 [mravčík skalní]

Genus: Zodarion, Family: Zodariidae