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Invertebrate Focus • Toon onderwerp - Vervellen van mijn wandelende tak: tips

Het is nu 19 sep 2019 01:03


Vervellen van mijn wandelende tak: tips

Wandelende takken en bladeren.

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Vervellen van mijn wandelende tak: tips

Bericht12 apr 2012 22:35



Wandelende takken - en bladeren behoren tot de ongewervelden. Ongewervelden hebben geen inwendig skelet dat meegroeit, maar een exoskelet (dat niet meegroeit). Daarom vervellen alle ongewervelden op geregelde tijdstippen. Zo ook wandelende takken - en bladeren. Wanneer een wandelende tak groeit, dan wordt de huid op een bepaald moment te klein. Dit is meestal na enkele weken tot maanden. Het is dan tijd om te vervellen. Het dier zoekt een geschikte plaats op (indien mogelijk) waar het goed kan opdrogen. Meestal is dit ondersteboven aan een tak. De huid barst open net achter de kop. Het dier pompt zijn lichaam vol met lucht, waardoor de huid verder openscheurt. Eerst komen de voorpoten, dan de middelste, en tenslotte de achterste poten. Het dier moet dan nog een tijdje blijven hangen, om zo op te drogen in de juiste positie. De eventuele vleugels worden opgepompt met bloed, zodat ze mooi kunnen opdrogen. Het dier zat immers helemaal geklemd in zijn oude huid. Eénmaal opgedroogd begint de wandelende tak meestal met het opeten van zijn oude huid. Daar zijn nog voedingsstoffen in aanwezig, die hij kan hergebruiken.

Helaas kunnen bij dit vervellen een aantal dingen misgaan:

• wanneer de omgeving te droog of te vochtig is, kunnen één of meerdere ledematen blijven steken. Het dier laat dan deze poten achter, en moet verder door het leven met een handicap. In gevangenschap is dit geen probleem, aangezien er geen natuurlijke vijanden zijn. De hangplaats kan ook te glibberig zijn. De huid kan ook te snel opdrogen.
• soms vindt het dier geen geschikte plaats om te vervellen. Dan vervelt hij op de grond of te laag bij de grond. Het dier raakt niet volledig uit zijn vervelling en sterft. Het kan ook voorkomen dat op die manier bepaalde delen (zoals poten of vleugels) misvormd zijn. De enige oplossing is dan meestal de vriezer.
• het dier kan tijdens de vervelling ook gestoord worden door andere takken of andere dieren. Dan kan de vervelling ook misgaan. De periode na de vervelling is cruciaal: de tak moet goed kunnen opdrogen.
• men mag het dier niet vastnemen net na de vervelling. De huid is dan nog zacht en moet nog hard worden. Men wacht beter tot de volgende dag, indien men de dieren wil vastnemen.

DSCF0371 (612 x 816).jpg
DSCF0371 (612 x 816).jpg (63.99 KiB) 2194 keer bekeken


Wanneer de nimfen geboren worden, spreken we van een L1 - nimf. De L is afkomstig uit het Engels en staat voor ‘Larval stadium’. Bij de geboorte is een nimf onmiddellijk L1. Na elke vervelling wordt er een éénheid bijgeteld. Na één vervelling spreken we dus van L2. Dit gaat zo verder tot de dieren uiteindelijk volwassen worden (adult stadium). Het stadium net voor volwassenheid wordt ook wel subadult genoemd. Mannelijke dieren vervellen normaal 5 keer, een vrouwelijk dier één keer meer: 6 vervellingen.
Spider: H. venatoria/G. pulchripes/H. incei/X. immanis/E.cyanognathus/ H. triseriatus/P. pederseni/C. salei 'Santa Lucia'
Whipscorpion: T. tarnanii/T. crucifer/T. stimpsonii/ M. giganteus
Whipspider: D. diadema/D. variegatus/E. bacillifer/P.aztecus/P. eucharis/P. marginemaculatus

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