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Cik ilgi dzīvo krusta zirnekļi?
20, 2005, 12:26muša
:-:

    Latvijā ir 34 krusta zirnekļu dzimtas sugas. Visi tie dzivo vienu gadu: tagad mēs redzam pieaugušos zirnekļus, vasaras beigās tie kopulē, tad tēviņš nomirst vai tiek apēsts, tad mātīte izveido kokonu ar olām, kas pārziemo. Pavasarī no pārziemojušām olām, kas pārziemojušas kokonā, izšķiļas jaunie zirneklēni, kas vasaras gaitā pieaug, līdz sasniedz dzimumgatavību. Tad attīstības cikls ir noslēdzies.
    25, 2005, 19:48V.
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Materiālus mājas lapai iesūtīt Marutai Kusiņai
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