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Fluctuating asymmetry and inbreeding in Scandinavian gray wolves (Canis lupus)

100%

Wiig O., Bachmann L.

Acta Theriologica

2014

tom 59

nr 3

We investigated fluctuating asymmetry in 13 traits of the skulls and jaws of historical and contemporary populations of Scandinavian gray wolves (Canis lupus). We hypothesized that there is a higher level of fluctuating asymmetry in the inbred contemporary population than in the historical population. Our analyses did not detect any difference in the level of fluctuating asymmetry as predicted. We propose different explanation for this lack of change in fluctuating asymmetry. It is assumed that a large number of studies have failed to find a positive correlation between the level of genetic stress and developmental instability and have therefore never been published, which hampers a good understanding of fluctuating asymmetry as an indicator of developmental instability. The current study is thus important in this context. The gray wolf population in Scandinavia is characterized by an extreme bottleneck followed by two and a half decades of strong inbreeding, but no associated change in fluctuating asymmetry is detected.

Gyrodactylus species [Monogenea] infecting alpine bullhead [Cottus poecilopus Heckel, 1837] in Norway and Slovakia, including the description of Gyrodactylus mariannae sp.nov.

80%

Winger A. C., Hansen H., Bachmann L., Bakke T. A.

Acta Parasitologica

2008

tom 53

nr 3

Gyrodactylus specimens infecting the skin and fins of two alpine bullhead (Cottus poecilopus) populations from the rivers Signaldalselva (North Norway) and Rena (South-East Norway) were characterized by both morphological and molecular means. Morphometrical differences were minor and the nucleotide sequences of the internal transcribed spacers (ITS) of the nuclear rDNA cluster were identical for parasites from both localities. Based on earlier descriptions, the relatively closest species are Gyrodactylus hrabei Ergens, 1957, described from common bullhead (Cottus gobio) in Slovakia and G. sp. Malmberg, 1973, from alpine bullhead in Sweden. The Norwegian Gyrodactylus specimens from the two alpine bullhead populations were morphometrically different from both the type material of G. hrabei from Slovakia and newly collected Gyrodactylus specimens from alpine bullhead in two Slovakian localities. The Slovakian Gyrodactylus specimens were found to be identical with type material of G. hrabei. The nucleotide sequences of the ITS of the Norwegian Gyrodactylus species were different from the Slovakian material. Hence, the Norwegian Gyrodactylus specimens from the alpine bullhead represent a new species, G. mariannae sp. nov.

Ograniczanie wyników

1 Acta Parasitologica

1 Acta Theriologica

2 Bachmann L.

1 Bakke T. A.

1 Hansen H.

1 Wiig O.

1 Winger A. C.

1 2014

1 2008

Wyniki wyszukiwania

Fluctuating asymmetry and inbreeding in Scandinavian gray wolves (Canis lupus)

Gyrodactylus species [Monogenea] infecting alpine bullhead [Cottus poecilopus Heckel, 1837] in Norway and Slovakia, including the description of Gyrodactylus mariannae sp.nov.