Monthly Archives: March 2012

Moeilikheid broei

Ek hoor daar is groot moles in die Bo-Kaap – die mense is kwaad omdat hulle 

Halaal bolletjies met kruise gemerk is.

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Hour of Power!

Moenie dat die Earth Hour fans jou mislei nie. Wees eerder dankbaar dat ons nie saans by ‘n olielampie hoef te probeer lees nie – veral  nie as die ou ogies nie meer so lekker in dowwe lig wil sien nie!

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Saterdag, 8:30 tot 9:30 – Skakel elke lig in jou huis aan om die Hour of Power te vier!

Ek haal Jo Nova aan:

… Hello Earthians! It’s time to say thank you to Edison, to Faraday and Maxwell, it’s time to celebrate the Gift of Light.

Saturday night at 8.30 – 9.30pm this week is the Hour of Power

(Don’t confuse this with the splinter group celebrations called Earth Hour, where people sit in the dark – so they can appreciate the glory of luminosity come 9.31).

The Glory! We are the lucky generation with light at the flick of a switch

 

In the hundred thousand years since homo sapiens came to be, people have fled bondage, wars, small-pox, dysentery, died from minor scratches, starved to death, been ravaged by lions, stricken by cholera, and survived the odd ninety thousand year stretches of hypothermic, abysmal ice age. We lived in the darkness for 99,900 years, cowering in corners, listening to drips, waiting for the sun.

 

There is only one type of Freedom – and all else is servitude, slavery or tyranny. …

 


 

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The 99 Lives of a (fat) cat

Zapiro in die Mail & Guardian

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Kaart (en Transport?) van die Hemel

Volgens ‘n berig hier: News 24

 

Sibusiso was glo al vier keer in die Hemel! Vuurklip reken die Hemel is nie te waffers nie as ou Sibu’ elke keer weer terugkom Aarde toe.

 

Johannesburg – A self-proclaimed prophet from Mandeni, in KwaZulu-Natal, claims he has been to heaven four times, according to a report on Monday.

Sibusiso Mthembu, 64, said there were 11 heavens and he had drawn a map of them, the Sowetan newspaper reported.

Mthembu said he had his first heavenly journey in December 1998. The other three journeys took place in 2004, 2006 and 2008. On his return, he drew a map of heaven and its residents.

“An angel, whom I later realised was Gabriel, who was in his early 20s, appeared at my house and led me by the hand to the Mandeni River where he baptised me and he returned to heaven,” Mthembu told the newspaper.

He said the same angel arrived in 1998 and this time took him along to heaven. Mthembu said he had seen God, Jesus and angels during his journeys.

Mthembu had written several books documenting his heavenly experiences, according to the newspaper. 

– SAPA

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Der Wind hat mir ein Lied erzhält

Zarah Leander

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Teen ‘n tuinmuur V

Parasitiese wespe.

Hierdie konstruksie het onlangs teen ‘n buitemuur verskyn. Ongelukkig het ek nie die bouproses waargeneem nie. Die nes is van sand gebou en waarskynlik met speeksel van die bouer vasgemessel. 

Enkele dae later is die selle oopgebreek en het die nuwe geslag wespe die wêreld ingevaar. Hier sien jy die verlate nes.

Ek vermoed dis ‘n wesp wat spinnekoppe parasiteer. Die spinnekop word eers verdoof en dan word ‘n eier in die spinnekop gelê. Die eier broei uit, en die wesplarwe voed op die verdoofde spinnekop, word ‘n papie en kom tevoorskyn as ‘n volgroeide wesp.

Onlangs kom ek op hierdie storie af. Dis het betrekking op ‘n ander wesp spesie, Aphidius ervi wat plantluise parsiteer en illustreer by uitstek die evolusionêre interspesie arms race van meganismes vir aanval en verdediging. 

As jy ‘n kreasionis is, moet jy jouself afvra watter soort “intelligensie” so ‘n bisarre en meedoënlose proses kan uitdink.

Kortliks verloop dinge so:
Die wesp plant een of meer eiers in die plantluis.


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Die wesplarwe broei uit en vorm ‘n laag buiteselle wat direk op die plantluis voed – daar is geen “egg yolk” in die wespeier nie. Die laag selle tree dus op as ‘n soot placenta. Verder versprei somminge van die “plasenta” selle deur die plantluis se ligaam waar die plasenta-selle ensieme afskei wat help om die plantluis af te breek as kos vir die larwe. Die larwe vorm later ‘n papie en die nuwe wesp kom uit die plantluis tevoorskyn.

Dis egter net deel van die storie!

Die plantluis het ‘n immunstelsel wat ‘n mate van beskerming teen die wesp bied. Dis nie al nie – die plantluise dra soms ook ‘n bakteriese besmetting wat die wesplarwe verhoed om te onwikkel. Hierdie bakterium word oorgedra tussen plantluise van ouers na kleintjies en d.m.v. seks.

Die storie verdiep nogeens.

Die bakterium bied net beskerming as dit op sy beurt besmet is met ‘n spesifieke virus. Die virus vervaardig die wesp-toksien wat die wesplarwe aanval.

Nou staan die wesp se evolusionêre ontwikkeling nie stil nie, en die wesp kan bepaal of die plantluis met die bakterium besmet is. Indien nie, plant sy net een eier, indien wel, plant sy twee of meer.

Jy kan hier meer lees oor ‘n parasitiese vlieg wat ‘n ander parasiet parasiteer binne dieselfe gasheer-ruspe.

Teen ‘n Tuinmuur I Teen ‘n Tuinmuur IITeen ‘n Tuinmuur IIITeen ‘n Tuinmuur IV

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