Population-dynamics of the mediterranean pine vole Pitymys-Duodecimcostatus in 2 agrosystems in the Montpellier area
International audience The populations of Mediterranean Pine Vole Pitymys duodecimcostatus were simultaneously monitored by removal trapping (Guedon & Pascal, 1992) in two agrosystems of Southern France, an apple orchard (for 5 consecutive years) and an asparagus field (for 4 years). Altogether,...
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ftccsdartic:oai:HAL:hal-03191832v1 2023-05-15T17:12:38+02:00 Population-dynamics of the mediterranean pine vole Pitymys-Duodecimcostatus in 2 agrosystems in the Montpellier area Pascal, Michel Département Hydrobiologie et Faune Sauvage (HFS) Institut National de la Recherche Agronomique (INRA) 1993 https://hal.inrae.fr/hal-03191832 en eng HAL CCSD hal-03191832 https://hal.inrae.fr/hal-03191832 WOS: A1993MD00500003 ISSN: 0249-7395 Revue d'Ecologie https://hal.inrae.fr/hal-03191832 Revue d'Ecologie, 1993 animal habitat captivity Arvicola terrestris [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 1993 ftccsdartic 2021-04-10T22:21:51Z International audience The populations of Mediterranean Pine Vole Pitymys duodecimcostatus were simultaneously monitored by removal trapping (Guedon & Pascal, 1992) in two agrosystems of Southern France, an apple orchard (for 5 consecutive years) and an asparagus field (for 4 years). Altogether, 1 668 individuals were captured on these two study sites. Furthermore, 7 598 control animals were captured along standard trap lines in similar agrosystems within the same kinds of habitat. The seasonal and yearly variations of vole density were estimated using an index of abundance. The trapped animals were sexed, their ages estimated using the eye lens weight method, and the reproductive condition of females ascertained by post-mortem examination. Despite an heavy damage on crops, the Mediterranean Pine Vole density remained rather low throughout the study period, as compared with species such as Microtus arvalis and Arvicola terrestris. It displayed seasonal fluctuations, but no tendency to pluriannual cycling. The sex-ratio remained balanced in all populations sampled. The percentage of voles over one year of age remained high (ca. 10 %) all the year long, whereas the percentage of animals belonging to the age class 50 days-1 year ranged from 65 to 85 %. The proportion of reproductively active females remained stable from November to May (35 to 40 %), reached its lower values in June and July (10 %), and increased again from August to October (up to a maximum of 70 % in September). The possible causes of the unexpected population stability of P. duodecimcostatus in our study areas, despite the strong seasonality of the mediterranean environment, are discussed. As in P. pinetorum, behavioural factors might well play a determinant role, both species living in family groups. Article in Journal/Newspaper Microtus arvalis Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
animal habitat captivity Arvicola terrestris [SDV]Life Sciences [q-bio] |
spellingShingle |
animal habitat captivity Arvicola terrestris [SDV]Life Sciences [q-bio] Pascal, Michel Population-dynamics of the mediterranean pine vole Pitymys-Duodecimcostatus in 2 agrosystems in the Montpellier area |
topic_facet |
animal habitat captivity Arvicola terrestris [SDV]Life Sciences [q-bio] |
description |
International audience The populations of Mediterranean Pine Vole Pitymys duodecimcostatus were simultaneously monitored by removal trapping (Guedon & Pascal, 1992) in two agrosystems of Southern France, an apple orchard (for 5 consecutive years) and an asparagus field (for 4 years). Altogether, 1 668 individuals were captured on these two study sites. Furthermore, 7 598 control animals were captured along standard trap lines in similar agrosystems within the same kinds of habitat. The seasonal and yearly variations of vole density were estimated using an index of abundance. The trapped animals were sexed, their ages estimated using the eye lens weight method, and the reproductive condition of females ascertained by post-mortem examination. Despite an heavy damage on crops, the Mediterranean Pine Vole density remained rather low throughout the study period, as compared with species such as Microtus arvalis and Arvicola terrestris. It displayed seasonal fluctuations, but no tendency to pluriannual cycling. The sex-ratio remained balanced in all populations sampled. The percentage of voles over one year of age remained high (ca. 10 %) all the year long, whereas the percentage of animals belonging to the age class 50 days-1 year ranged from 65 to 85 %. The proportion of reproductively active females remained stable from November to May (35 to 40 %), reached its lower values in June and July (10 %), and increased again from August to October (up to a maximum of 70 % in September). The possible causes of the unexpected population stability of P. duodecimcostatus in our study areas, despite the strong seasonality of the mediterranean environment, are discussed. As in P. pinetorum, behavioural factors might well play a determinant role, both species living in family groups. |
author2 |
Département Hydrobiologie et Faune Sauvage (HFS) Institut National de la Recherche Agronomique (INRA) |
format |
Article in Journal/Newspaper |
author |
Pascal, Michel |
author_facet |
Pascal, Michel |
author_sort |
Pascal, Michel |
title |
Population-dynamics of the mediterranean pine vole Pitymys-Duodecimcostatus in 2 agrosystems in the Montpellier area |
title_short |
Population-dynamics of the mediterranean pine vole Pitymys-Duodecimcostatus in 2 agrosystems in the Montpellier area |
title_full |
Population-dynamics of the mediterranean pine vole Pitymys-Duodecimcostatus in 2 agrosystems in the Montpellier area |
title_fullStr |
Population-dynamics of the mediterranean pine vole Pitymys-Duodecimcostatus in 2 agrosystems in the Montpellier area |
title_full_unstemmed |
Population-dynamics of the mediterranean pine vole Pitymys-Duodecimcostatus in 2 agrosystems in the Montpellier area |
title_sort |
population-dynamics of the mediterranean pine vole pitymys-duodecimcostatus in 2 agrosystems in the montpellier area |
publisher |
HAL CCSD |
publishDate |
1993 |
url |
https://hal.inrae.fr/hal-03191832 |
genre |
Microtus arvalis |
genre_facet |
Microtus arvalis |
op_source |
ISSN: 0249-7395 Revue d'Ecologie https://hal.inrae.fr/hal-03191832 Revue d'Ecologie, 1993 |
op_relation |
hal-03191832 https://hal.inrae.fr/hal-03191832 WOS: A1993MD00500003 |
_version_ |
1766069423503835136 |