摘要:

Craniometric variation in Norwegian wolverines was analysed using univariate and multivariate techniques. The wolverine skull seems to be full‐grown after about 9 months in both sexes although some dimensions continued to grow at a slow rate after the first year. Size allometry was studied in skulls older than 11 months. Allometric coefficients were calculated from different methods. The multivariate allometric coefficients were found to reflect the same allometric patterns as were found from the reduced major axis and from the direction cosines of PCI, whereas the coefficients seem to be underestimated by the least‐square regression method. Sexual dimorphism was found to be highly significant, males being the larger sex. The female skulls were found to be relatively broader and to have a relatively higher coronoid process than the male skulls. It seems that the females have a relatively stronger feeding apparatus than the males, which leads to less absolute differences in strength, as reflected in a very high degree of dietary overlap. Two discriminant functions were calculated which both classified the material into their correct sex with nearly 100% accuracy. Geographical variation between samples from Nordland and Finnmark counties were studied. No significant multivariate variation was found between the female skulls. The male variation was highly significant; the Nordland skulls seem to have longer carnassials than those from Finnm

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1998.tb01990.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

Previously unrecognized fish specimens from the collection of Laurens Theodore Gronovius (1730–1777) are catalogued and described. Five specimens of as many taxa are in the collection of the British Museum (Natural History) and nine specimens of seven taxa preserved in alcohol are in the collection of the Zoological Museum, Copenhagen, With one exception all have been examined; they are identified, related to the literature and eight specimens are shown to be part of the type series of Linnaean fish tax

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1998.tb01991.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

摘要:

The nameHydra attenuataPallas is currently applied to the wrong animal. The common brown polyp, which is widely calledH. attenuata,was described by Pallas (1766) asHydra vulgaris.The nameH. attenuataPallas originally referred to an uncommon pale polyp, currently known asH. circumcinctaSchulze. The history of this confusion is analysed here. The taxonomy of hydra was in disarray during the 18th and 19th centuries, and was clarified in 1917 with the monograph of Schulze. But Schulze misapplied the name for the common hydra,H. vulgaris,to an unusual form and thus was led to assign the name of a rare hydra,H. attenuata,to the common type. Schulze redescribed the rare, pale hydra that Pallas had namedH. attenuata as H. circumcincta.The correct name of the common European brown, stalkless hydra is thusH. vulgarisPallas, 1766. The nameH. attenuatahas priority for the uncommon pale hydra, but because of disuse of this application of the name, the pale hydra should be recognized by the current, generally accepted binominalH. circumcinctaSchulze, 1914.

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1998.tb01992.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1998.tb01992a.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1998.tb01992b.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY

ISSN:0024-4082    

DOI:10.1111/j.1096-3642.1998.tb01992c.x

出版商:Blackwell Publishing Ltd    

年代:1989

数据来源: WILEY