Wyniki wyszukiwania

1

Relative growth and annual size variation in Crocidura russula from the Ebro Delta Spain

100%

Lopez-Fuster M. J., Ventura J.

Acta Theriologica

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1992

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tom 37

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nr 4

We report data on the somatometry of the white-toothed shrew Crocidura russula (Hermann, 1780), based on 302 specimens (153 males, 149 females) captured between 1980 and 1982 in the Ebro Delta (northeastern Spain). Variations in body size and weight were analysed according to sex, relative age (estimated by tooth wear) and month of capture. Relative and seasonal growth were also studied. No statistical difference in body size was detected between sexes. The specimens showed highest growth rate up to about fourteen weeks of age. Afterwards, most of the variations detected in body length and especially in weight were basically related to sexual stage. Specimens born in the first litters of the year grew faster than those born at the end.

2

Arterial supply of the pelvic region in the fossorial form of the northern vole, Arvicola terrestris [Mammalia, Rodentia]

81%

Ventura J., Lopez-Fuster M. J., Gispert E.

Zoologica Poloniae

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1994

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tom 39

59-68

3

Craniometrical characteristics of Neomys fodiens (Pennant, 1771) (Mammalia, Insectivora) from the northeastern Iberian Peninsula

81%

Lopez-Fuster M. J., Ventura J., Miralles M., Castien E.

Acta Theriologica

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1990

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tom 35

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nr 3-4

4

Characteristics ofthe reproductive cycle of the mole, Talpa europaea, in the Northeast of the Iberian Peninsula

81%

Lopez-Fuster M. J., Gosalbez J., Lluch S.

Acta Theriologica

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1988

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tom 33

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nr 1-11

5

Arterial supply of the pelvic region in the fossorial form of the Northern vole, Arvicola terrestris [Mammalia, Rodentia]

81%

Ventura J., Lopez-Fuster M. J., Gispert E.

Zoologica Poloniae

|

1994

|

tom 39

|

nr 1-2

6

Craniometrics of the orange mouse opossum Marmosa xerophila [Didelphimorphia: Didelphidae] in Venezuela

81%

Lopez-Fuster M. J., Salazar M., Perez-Hernandez R., Ventura J.

Acta Theriologica

|

2002

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tom 47

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nr 2

Skull size variation in the orange mouse opossum Marmosa xerophila Handley and Gordon, 1979 in Venezuela was analysed by sex and geographic location. Morphometric relationships between the species and the closely related M. robinsoni Bangs, 1898 were also studied. Results showed that M. xerophila is a sexually dimorphic and geographically homogeneous species. Males had larger skulls than females, although dimorphism was mainly related to length, height, and some dental parameters. Interspecific comparisons revealed that M. xerophila has a smaller skull than M. robinsoni, even in the sympatric area where the smallest specimens of M. robinsoni occur. Discriminant function analyses between these species, for males and females separately, provided accurate classification functions that allowed correct specific determination. In Venezuela, M. xerophila lives in arid lands with xerophilous thorny woodland and scrub, up to 90 m above see level.

7

The Sorex araneus group in the northern Iberian System Spain: a contact zone between S.coronatus and S.granarius?

81%

Lopez-Fuster M. J., Ventura J., Garcia-Perea R., Gisbert J.

Acta Theriologica

|

1999

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tom 44

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nr 2

Available information on the distribution of the European species of the Sorex arañéis group in the Iberian Peninsula suggests that the Iberian System (north-central Spain might be a sympatric area between S. coronatus Millet, 1828 and S. granarius Miller, 1910. With the aim to assess this hypothesis, multivariate analyses based on 16 skull and mandible parameters were carried out on 78 shrews from the Iberian System. A preliminary specific determination was performed on 57 specimens using a discriminant function established in a previous study. Two further discriminant functions based on skull and mandible variables respectively were constructed from the sample analysed and both provided an identical classification of the specimens, although slight.y different from that of the preliminary determination. In order to summarize the n.orphometric interspecific relationships a principal components analysis was performed. Results obtained confirm the presence of S. coronatus and strongly suggest that of S. granarius and of a contact zone between both species in the Iberian System. In this area both species share the same general habitats, occupying oro- and supramedi- terrarean bioclimatic levels. Taking into account the distributional pattern reported for S. araneus and S. coronatus in sympatric areas, and considering the convergence in size observed between S. granarius and S. coronatus in the Iberian System, we suggest that in this contact zone both species might have a parapatric distribution, due most probably to microhabitat segregation.

Ograniczanie wyników

5 Acta Theriologica

2 Zoologica Poloniae

7 Lopez-Fuster M. J.

6 Ventura J.

2 Gispert E.

1 Castien E.

1 Garcia-Perea R.

1 Gisbert J.

1 Gosalbez J.

1 Lluch S.

1 Miralles M.

1 Perez-Hernandez R.

1 Salazar M.

1 2002

1 1999

2 1994

1 1992

1 1990

1 1988

Relative growth and annual size variation in Crocidura russula from the Ebro Delta Spain

Arterial supply of the pelvic region in the fossorial form of the northern vole, Arvicola terrestris [Mammalia, Rodentia]

Craniometrical characteristics of Neomys fodiens (Pennant, 1771) (Mammalia, Insectivora) from the northeastern Iberian Peninsula

Characteristics ofthe reproductive cycle of the mole, Talpa europaea, in the Northeast of the Iberian Peninsula

Arterial supply of the pelvic region in the fossorial form of the Northern vole, Arvicola terrestris [Mammalia, Rodentia]

Craniometrics of the orange mouse opossum Marmosa xerophila [Didelphimorphia: Didelphidae] in Venezuela

The Sorex araneus group in the northern Iberian System Spain: a contact zone between S.coronatus and S.granarius?