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Variation i kopulationsvarighed i ormelignende tusindben, Paperback / softback Book

Variation i kopulationsvarighed i ormelignende tusindben Paperback / softback

Paperback / softback

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Kopulationsvarighed er en reaktion pa saedkonkurrence.

Af mange afgorende faktorer for kopulation varighed pa tvaers af leddyr, undersogte jeg variation i samleje varighed i mate-bevogtning i orm-lignende millipedes.

Null-hypotesen var gennemsnitlig samleje, og standardafvigelsen i kopulationsvarigheden var uafhaengig.

Kopulationsvarigheder og standardafvigelser for 11 populationer af millipedes blev opnaet fra litteraturen.

Kopulationsvarighederne var staerkt korreleret med standardafvigelser i sydafrikanske populationer (r=0,8824, r2=0,8824, n=11, p=0,000323).

Disse varierede fra Calostreptus sp. ( Sengwa) (33,8±22,9 min.) til Doratogonus (=Alloporus) uncinatus (Hwange) (205,8±60,8 min.) og omfattede tre skovarter.

Kvindens storrelse var korreleret med standardafvigelsen i kopulationsvarigheden i savanneben (r=0,9269, r2=0,8591, n=8, p=0,000924).

Hanstorrelsen var korreleret med standardafvigelsen i kopulationsvarigheden i savanneben (r=0,9337, r2=0,8718, n=8, p=0,000693).

Der var ingen signifikant forskel mellem korrelationskoefficienterne for han mod hunvariation (z=0,07997498, n=8, 8, p=0,93625715).

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£31.00

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