Polyploid spermatozoa in Pityogenes chalcographus and Ips typographus (Coleoptera: Scolytidae)

Title:

Polyploid spermatozoa in Pityogenes chalcographus and Ips typographus (Coleoptera: Scolytidae)

Creator:

Führer , Erwin

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:4e3f4a21-9824-46f1-a023-8c45f2c4967b
uuid:4e3f4a21-9824-46f1-a023-8c45f2c4967b

Subject:

Pityogenes chalcographus, Ips typographus, spermatozoa, polyploidy, allopatric crosses, and incompatibility

Type:

article, model:article, and TEXT

Description:

Abnormal spermatogenesis in Pityogenes chalcographus (L.) and Ips typographus (L.) results in oversized spermatozoa in all the populations investigated. They can be identified by light microscopy and classified as 2n up to 16n polyploid. The percentage of polyploid sperm increases when allopatric parents are crossed: Parental populations with less than 1% polyploid, result in male F1 with more than 20% polyploid. Wild populations of P. chalcographus and I. typographus have very different percentages of polyploid sperm. Populations from allochthonous sites for the host tree, Picea abies (Karst.), are distinguished by higher rates of sperm polyploidy than those from autochthonous areas. Thus, it is assumed that polyploid sperm indicates populations originating from the mixing of partially incompatible beetles.

Language:

English

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Source:

European Journal of Entomology | 2004 Volume:101 | Number:1

Harvested from:

CDK

Metadata only:

false