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An assessment of seedling damage by wild house mice (Mus musculus) and wild deer mice (Peromyscus spp.)
Author(s) -
Gary W. Witmer,
Nathan P. Snow,
Rachael S. Moulton,
Jenna Swartz
Publication year - 2012
Publication title -
canadian journal of forest research
Language(s) - French
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 121
eISSN - 1208-6037
pISSN - 0045-5067
DOI - 10.1139/x2012-065
Subject(s) - seedling , peromyscus , rodent , biology , house mice , house mouse , deciduous , botany , woody plant , deer mouse , zoology , ecology , horticulture
Although it is known that voles will damage seedlings, we do not know the extent to which deer mice (Peromy- scus spp.) and house mice (Mus musculus Linnaeus, 1758) damage seedlings. Knowing this information can assist resource managers in better targeting problem species and implementing appropriate management actions. We planted and monitored ponderosa pine (Pinus ponderosa Douglas ex Lawson & C. Lawson) and narrow-leaf cottonwood (Populus angustifolia E. James) seedlings in metal stock tanks occupied by deer mice or house mice to assess the potential for damage by these rodents. Both species damaged leaves and stems of cottonwood seedlings, but house mice did more damage. House mouse damage resulted in mortality of over half of the cottonwood seedlings, whereas deer mice caused a much lower level of seedling mortality. Only slight damage was done by either species to pine seedlings. Neither species damaged the roots of seedlings, despite the extensive burrowing by house mice. Although voles are often considered to be the primary rodent spe- cies causing seedling damage, we have shown that deer mice and especially house mice could also cause substantial damage to deciduous seedlings. However, our work suggests that rodent control to prevent damage to conifer seedlings might not be warranted in general unless there are extenuating circumstances and the species causing the damage are identified to assist with targeting control methods more precisely. Resume : Bien qu'on sache que les campagnols peuvent endommager les semis, on ne sait pas dans quelle mesure la souris sylvestre (Peromyscus spp.) et la souris domestique (Mus musculus Linnaeus, 1758) causent egalement des dommages aux semis. La reponse a cette question pourrait aider les gestionnaires a mieux cibler les especes problematiques et a mettre en œuvre des actions d'amenagement appropriees. Nous avons mis en terre et suivi des semis de pin ponderosa (Pinus ponde- rosa Douglas ex Lawson & C. Lawson) et de peuplier a feuilles etroites (Populus angustifolia E. James) dans des bacs de rangement en metal occupes par des souris sylvestres ou des souris domestiques pour evaluer les dommages que peuvent causer ces rongeurs. Les deux especes ont cause des dommages aux feuilles et a la tige des peupliers a feuilles etroites. Les dommages causes par la souris domestique etaient nettement plus marques, provoquant la mort de plus de la moitie des se- mis de peuplier a feuilles etroites tandis que la souris sylvestre causait beaucoup moins de mortalite. Les deux especes de souris ont seulement cause des dommages mineurs aux semis de pin. Aucun dommage aux racines n'a ete observe, meme si la souris domestique creusait beaucoup de terriers. Bien que les campagnols soient souvent percus comme l'espece de rongeur qui cause le plus de dommages aux semis, notre etude montre que la souris sylvestre et surtout la souris domestique peuvent aussi causer des dommages considerables aux semis des essences feuillus. Toutefois, nos resultats indiquent que la repression des rongeurs pour prevenir les dommages aux semis des coniferes n'est en general pas justifiee, sauf dans des cas speciaux et lorsque les especes qui causent les dommages sont identifiees de maniere a mieux cibler les methodes de re- pression. (Traduit par la Redaction)

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