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Manā pagrabā katru gadu ziemo ozolu karmīnpūcītes. Pagraba griesti apsarmo un līdz ar to arī tauriņi. Kā tie nesasalst, ja pārklājas ar sarmu? Un kur tie slēpjas vasarā???
13, 2006, 12:45Mikī
:-:

    paldies par atbildēm! :( Laikam jau šī grāmata domāta, lai palīdzētu skolēniem rakstīt referātus..... A varbūt vienkārši nevajadzēja rakstīt 13. datumā.....
    18, 2006, 8:19Mikī

    Lai arī pats Mikī marta beigās ir ierakstījis uz šo jautājumu atbildi, noķēru vienu kukaiņu pētnieku un noprāsīju, kas tad īsti notiekas ar šādiem apsarmojušiem tauriņiem.

    Kukaiņos veidojas vielas, kas pazemina ūdens sasalšanas temperatūru (svešvārdā – antifrīzs), līdz ar to ūdens kukaiņu ķermenī nesasalst pie samērā zemām temperatūrām. Visticamāk, ka šie tauriņu ziemu pārcietīs. Ja temperatūra tomēr nokrītas tik zemu, ka ūdens šūnās sasalst, kukainis to nepārdzīvos, jo ledus kristāli saplēš šūnas (sasalis ūdens aizņem lielāku tilpumu nekā šķidrā stāvoklī).

    Kukaiņi nav vienīgās būtnes, kas šādi nodrošīnās pret aukstumu. Piemēram, vēl ir zivis, kam šāda pretsasalšanas viela palīdz izdzīvot pie Dienvidpola krastiem.

    See also:
    Another message ( 20, 2006, 21:45)
    22, 2006, 4:50Zirneklītis

    Paldies! =)
    Jā, nu par kukaiņu ziemošanas spējām man jaudaudz kas ir stipri skaidrāks!!!
    23, 2006, 9:23Mikī
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