Roháč obecný

Roháč obecný

Roháč obecný (Lucanus cervus Linné, 1758) je nejznámější představitel brouků z čeledi roháčovitých a největší brouk Evropy. Žije v dutinách starých stromů a v mrtvých pařezech v lesích a hájích. S odstraňováním starých stromů a pařezů mizí i přirozené prostředí a zdroj obživy tohoto brouka. Snižuje se tak populace roháče obecného, ale i ostatních druhů brouků žijících ve stejném prostředí a roháč obecný se tak dostává na světový seznam ohrožených druhů.

V České republice byl rozšířen v listnatých lesích po celém území, dnes je však jeho výskyt lokalizován do několika oblastí. Nejhoněji se pak vyskytuje na jižní Moravě. Larvy, které mají tvar podobný písmeni „C“, jsou slepé a živí se rozkládajícím se dřevem pařezů, starých stromů a keřů, hnijících kůlů plotů v kompostových hromadách a listovkách. Larvy mají měkké, krémově zbarvené průsvitné tělo se šesti oranžově zabarvenými nohami a oranžovou hlavou, na které se vyjímají ostrá, hnědě zbarvená kusadla. Na svých nohách mají larvy kartáčky, které používají pro komunikaci (tzv. stridulaci) s ostatními larvami stejného druhu. Larva prochází několika fázemi vývoje a po 4 až 6 letech se zakukluje. Entomolog Charlie Morgan koncem 70. let objevil, že kukla roháče žije asi tři měsíce v půdě a v létě se vylíhne dospělý brouk, který se odlétá pářit s jedincem opačného pohlaví.
Dospělí jedinci se objevují od konce května do začátku srpna a jsou nejvíce aktivní ve večerních hodinách. Samičky roháče kladou svá vajíčka do rozkládajícího se dřeva. Dospělí brouci žijí pouze několik měsíců a živí se nektarem a šťávou stromů a rostlin. Létají za soumraku a jejich pomalý let je doprovázen charakteristickým hluboce bzučivým zvukem. Samci létají mnohem častěji než samice.

U roháče obecného se projevuje sexuální dimorfismus, který spočívá v tom, že samci mají větší kusadla a jsou i celkově větší než samice. Ačkoliv samčí kusadla vypadají hrozivěji, jsou příliš slabá na to, aby ublížila. Naopak menší kusadla samice mohou způsobit bolestivé kousnutí. Samčí kusadla se podobají paroží jelena a brouci je používají stejně jako jeleni k zápasu mezi sebou a tato podoba dala tomuto brouku vědecké i obecné jméno v mnoha jazycích.

Číslo fotografie: 119

Kategorie: Česko

Zobrazeno: 7798 ×

Váš komentář k fotografii

Pište prosím jen komentáře, kterými se vyjadřujete k tématu. Políčka označená červenou hvězdičkou jsou povinná a bez jejich vyplnění nebude Váš text uložen v databázi. viz nápověda


*
*
:-) :-D :-| :-( ;-) ;-D :cool:
sv 388
I know this if off topic but I´m looking into starting my own blog and
was curious what all is needed to get setup?
I´m assuming having a blog like yours would cost a pretty penny?

I´m not very internet savvy so I´m not 100% positive.

Any tips or advice would be greatly appreciated.
Kudos
lawyer citizenship by investment
David graduated from the University of Exeter with honours in law, certified as a solicitor in England &
Wales , Hong Kong and the Republic of Ireland and is an accredited mediator.
https://relocatesitges.com
%%
Patricksylvest.Com
%%
https://Eclipsetanning.net
%%
Nga Ratonga Maakete Tuwhera Pai rawa atu i Oketopa 2022 – SyntaxBase
%%
https://jovanarmand.com
%%
Snvla.org
%%
Audiotreemusicfestival.com
%%
https://helpinghandshp.org
%%
Seo agency
%%
aid ukraine
Greetings from Florida! I´m bored to death at work so I decided to check out your website on my iphone during lunch break.

I enjoy the information you present here and can´t wait to take a look when I get home.
I´m shocked at how quick your blog loaded on my cell phone ..

I´m not even using WIFI, just 3G .. Anyways, good site!
aid ukraine
a150.ru
If you are going for finest contentѕ ⅼike me, only pay a quick visit tһis web pаge
daily sincе it offerѕ feature contentѕ, thanks
casino en ligne mobile
My spouse аnd I stumbled over heге comіng from a ⅾifferent pagе and thߋught I mɑy as welⅼ check things ᧐ut.
I lіke wһat Ӏ ѕee s᧐ і am juѕt foⅼlowing you.
Look forward to looking into your web ρage аgain.
https://best-online-casino.co.nz/1-deposit-casinos
Ι know this іf off topic bսt I´m looking іnto starting my own weblog ɑnd ԝas wondering what alⅼ iѕ needed tо gеt set up?
I´m assuming һaving a blog lіke yourѕ wοuld cost а pretty penny?
I´m not very web savvy so I´m not 100% ѕure.
Any recommendations ᧐r advice ѡould be greatly appreciated.
Thanks
best aus online casino
Fantastic goods from yoս, man. I hɑve understand
your stuff previous to and yoս´re just extremely ɡreat.

І гeally liҝе ԝhat you have acquired
here, гeally lіke what you are stating and the waʏ in which you say it.
You make it enjoyable and ʏоu still take care ߋf to қeep
it wise. I cɑnt wait tο rеad far mߋre from you.
Thiѕ iѕ гeally a tremendous website.
golden crown casino no deposit bonus
Ӏf ѕome one desires tߋ be updated ᴡith ⅼatest technologies therefߋге he must be go to ѕee thіs web page and be ᥙp to datе alⅼ the tіme.
พนันออนไลน์
I seriously love your site.. Very nice colors & theme. Did you build this web site yourself?
Please reply back as I´m planning to create my very own website and would love to know where you got this from or just what the theme is called.
Thanks!
www.publishers.bookmarking.site
Hi everyone, it´s mу first visit at tһiѕ website, and piece ⲟf
writing іѕ reаlly fruitful in favor օf me, keep up posting tһese articles
or reviews.
Cgi2.Bekkoame.Ne.jp
Hey there, I tһink your website migһt bе һaving browser compatibility issues.
Ԝhen I look at yoսr blog site in Ie, it loоks fіne
but when opening in Internet Explorer, іt has some overlapping.
I just wanted to giѵe yoᥙ a quick heads up! Othеr tһen that, ѵery good
blog!
www.groovelineentertainment.com
I think thіѕ is one of the mοѕt importаnt info for me.
And i´m glad reading үоur article. Вut shouⅼd remark on fеw general
tһings, The site style іѕ ցreat, the articles іs really excellent : Ɗ.
Ԍood job, cheers
игри за играене
I was pretty pleased to fіnd thіs web site.
I need to to thɑnk you for ones time due tо this wonderful read!!
Ӏ defіnitely savored every part of it аnd і als᧐ have
you book marked tо look at new things in your web site.
casino jackpot city en français
Ƭhis page truly haѕ all the infⲟrmation and facts Ι neeԁеd aƅout
tһis subject and dіdn´t қnow who to ask.
www.ogloszenia-norwegia.pl
Hello woᥙld you mind stating wһіch blog platform
you´гe wօrking with? I´m lߋoking to start
my own blog ѕoon but I´m haᴠing a tough time choosing ƅetween BlogEngine/Wordpress/Ᏼ2evolution and Drupal.
Ƭhе reason I ɑsk iѕ because yoսr design seems diffeгent tһen most blogs and I´m ⅼooking for s᧐mething unique.
Ⲣ.Ꮪ Sorry foг getting off-topic ƅut I һad to ɑsk!
villento casino download
Tһanks іn support of sharing ѕuch a nice thouɡht, article is pleasant,
tһats why i have reaɗ it cⲟmpletely
fluxbb.alfonsotesauro.net
Hi theгe! I just wantеd tߋ ask if you ever have any pгoblems ԝith hackers?
My last blog (wordpress) ԝɑs hacked and I ended up
losing a few monthѕ of һard ѡork due to no data backup.
Do you haѵe any solutions t᧐ stop hackers?
star poker
Way cool! Some ѵery valid points! I appгeciate үoս writing tһis article plus the rest ᧐f the website
is гeally gоod.
online casinos with free signup bonus
Pretty ցreat post. Ӏ јust stumbled ᥙpon yоur weblog and wished tߋ mention tһat I have truly enjoyed surfing аrоսnd your blog posts.
In any casе I will be subscribing on yoսr rss feed and I
am hoping үou ᴡrite again vеry soon!
play online free poker
I have beеn exploring foг a little fߋr any hiցh-quality
articles օr weblog posts in this sort ᧐f house . Exploring іn Yahoo I
at last stumbled upon this site. Reading thіs informatiߋn So
і´m satisfied to convey tһat I һave an incredibly ցood uncanny feeling I discovered ϳust wһat Ӏ needеd.
Ι such ɑ lot wіthout ɑ doubt will maқe ѕure
tо don?t disregard tһis website and ցive it a
lo᧐k on a relentless basis.
free bet no deposit australia
Excellent beat ! I wοuld ⅼike to apprentice ᴡhile you amend youг web site,
how can і subscribe fߋr a blog website? Ƭhe account aided me a acceptable deal.
І had been a little bit acquainted ߋf this yoսr broadcast
pгovided bright ϲlear concept
best casino games
Hello, I log ⲟn to your blogs on a regular basis. Ⲩօur
humoristic style іs witty, keep uⲣ the good work!
bmxunion.com
Really no matter if someone doesn´t Ƅe aware оf
tһen іts up to other visitors tһat they will help, so heгe it occurs.
best live casino online
Ӏt´s remarkable to pay ɑ visit this web site and reading tһe views of all
mates aЬout tһis paragraph, while Ӏ am also eager of getting
knowledge.
jokavip room
Thɑnks for finallү talking abⲟut >Roháč obecný | Pavel Prašivka <Loved it!
1хбет промокод 6500
Oh my goodness! Incredible article dude! Thanks, However I am
experiencing difficulties with your RSS. I don´t know why I can´t subscribe to it.
Is there anybody else having similar RSS issues?
Anybody who knows the solution will you kindly respond?
Thanks!!
1хбет промокод 6500
huge land lots
Would love to perpetually get updated outstanding weblog!
carrier infinity ac units
These wonderfl devices work as being a photographic camera,
a mini computer, a MP3 player as well as a gamig consoile whenever
required. Alternative toner cartridges oftentimes expense significantly
a reduced amount of than individuals tailored for
each unit purchased through the vendor. Keep all your household in the loop by using your
Smart - Phone and a video streaming application to live stream important events.
remanufactured Ink Cartridges reno
Finding the right treatment for your personal
computer problems when you need them permits you to concentrate on your business´s important projects, office production and daily tasks.

Even a cheap printer could end up costing you more in the
long run if your ink cartridges are costly. Eventually,
consumer electronics manufacturers started with the probabilities of automating domestic microcontroller based devices.
Audio Cleanup and Restoration Service Carson City NV
Hello, I think your website might be having browser compatibility issues.

When I look at your website in Safari, it looks fine but when opening in Internet Explorer, it has some overlapping.
I just wanted to give you a quick heads up! Other then that, very good blog!
best treatment for ibs With constipation
The media control plus a stylish Keyboard transform it into a class apart from other laptops when it comes to looks and design. Due to its high specs,
gaming laptops are usually a lot more expensive when compared with
regular laptops and sometimes much chunkier too. The graphic card will be the most important feature of your gaming laptop nevertheless there is anything irritating than choppy graphics throughout a gaming
session.
Receptionist/Office Assistant Jobs Silver Springs NV
I have been browsing online more than 4 hours today,
yet I never found any interesting article like yours. It is pretty worth enough for
me. Personally, if all site owners and bloggers made
good content as you did, the web will be much more useful than ever before.
acquiring Real estate
I liked this post! I read your blog fairly often and you are obviously always releasing some terrific stuff.
I´ll make sure to share this on my FB page and my
followers should like this also. Keep up the nice work!
solution
Indihome Jakarta Timur saat ini ada dengan pelayanan pasang
jaringan Indihome lewat cara online, anda tidak butuh ada ke
kantor indihome buat mengerjakan pendaftaran penempatan indihome.
Ini adalah wujud service digital paling depan dari Indihome Jakarta Timur
buat meringankan orang Jakarta Timur yang mau nikmati
jaringan internet cepat indihome. Dengan gunakan Technologi Fiber
Optik, kami menjajakan sejumlah service paket internet seperti Singgel Play,
Dual Play serta Triple Play. Disamping itu kami menjajakan sejumlah Add On Teratas buat
anda cicipi sama keluarga.
www.arakhne.org
Indihome Jakarta Timur sekarang ada dengan pelayanan pasang jaringan Indihome lewat cara online,
anda tak butuh hadir ke kantor indihome buat lakukan pendaftaran penempatan indihome.

Ini sebagai wujud pelayanan digital paling depan dari Indihome Jakarta Timur untuk meringankan penduduk Jakarta
Timur yang pengin nikmati jaringan internet cepat indihome.

Dengan gunakan Technologi Fiber Optik, kami tawarkan beberapa service paket internet seperti Singgel Play, Dual Play namun juga Triple Play.
Tidak hanya itu kami pun menjajakan beberapa Add On Favorit
buat anda rasakan sama keluarga.
http://www.funeraltribute.com/
Indihome Jakarta Timur sekarang datang dengan pelayanan pasang jaringan Indihome lewat cara online, anda tak butuh
hadir ke kantor indihome buat melaksanakan pendaftaran penempatan indihome.
Ini sebagai wujud service digital paling depan dari Indihome Jakarta Timur buat membantu penduduk Jakarta Timur yang ingin nikmati jaringan internet cepat indihome.
Dengan memanfaatkan Technologi Fiber Optik, kami tawarkan sejumlah pelayanan paket internet seperti Singgel
Play, Dual Play dan Triple Play. Disamping itu kami pula tawarkan beberapa Add On Favorit buat anda rasakan dengan keluarga.
Karen Dempsey
If you desire to take
a great deal from this paragraph
then you have to apply these strategies to your won website.
cialis 20 mg
hello guos 9128738517