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Cik ilgi zirneklis var izdzivot bez ēšanas?
29, 2005, 10:04Kristine
:-:

    Ir dažādi zirnekļi. Varbūt iesākumā par to, cik ilgi zirnekļi dzīvo. Tas atkarīgs no sugas. Latvijā diez vai kāds zirneklis dzīvo ilgāk par gadu. Daži sīkie zirneklīši dzīvo tikai pāris dienas. Milzīgie zirnekļi, piemēram, putnu zirnekļi, dzīvo vairākus gadus. Kāda tarantulu matīte esot nodzīvojusi ap divdesmit gadiem (http://druniverse.wsu.edu/QandA.asp?questionID=28436). Tikpat cik dažāds ir zirnekļa mūža ilgums, tikpat dažāda ir zirnekļu spēja badoties.

    Zirnekļi vairākas dienas badojas pirms sava ārējā apvalka nomaiņas. Jo lielāks zirneklis, jo ilgāk badojas (http://www.earthlife.net/chelicerata/s-ecology.html). Zirnekļi bez ēšanas var iztikt sākot no vairākām dienām līdz pat vairakām nedēļām. Ilgāk bez ēšanas var iztikt tie zirnekļi, kas laupījumu ķer ar tīkliem – tie var sēdēt nekustīgi un gaidīt, līdz medījums ieskries tīklā. Tiesa, tīkla veidošana pati par sevi daudz prasa no zirneklīša. Pie tam tīklu nākas šad tad pielabot un pārbūvēt. Ir zirnekļi, kas regulāri apēd paši savu veco tīklu un noauž jaunu. Daži zirnekļi iztiek bez barības mēnešiem.

    1, 2005, 23:53Zirneklītis
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