Keywords
trampeo
sigmodon hirsutus
mus musculus
roedores plaga
vertebrados plaga
rodents
trapping
sigmodon hirsutus
mus musculus
pest rodent
pest vertebrate
How to Cite
Abstract
The effect of adding a correction factor in the formula used to estimate the trapping success of rodents, as well as the duration of the period of sampling (1, 2 or 3 days) and the effect of considering rodents captured as a single species or by differentiating them, were examined. The correction factor involved considering those traps with poor performance as the average value (traps activated without bait, disabled with or without bait, catch of a species different from that of interest and traps lost or removed). Estimated trapping success was 3.67% and 3.85%, according to the traditional formula and the corrected version, respectively, in one of the study sites where the predominant species was Sigmodon hirsutus, and 3.20 and 3.89% in another site, with Mus musculus as the predominant species. No significant differences were found in the estimate of trapping success with the use of one or the other formula, in both study sites. Sampling for just one day was enough to estimate the trapping success (4.14%), since there were no significant differences compared to 2 days of sampling (4.04%) or 3 days (3.67%). Also, there were no significant differences when comparing the method to identify each species of rodents (3.67%) with the method to consider all individuals captured as a single species (3.88%). Our results correspond to a situation with a relatively low capture of rodents, as well as when there is a predominant species present, thus it would be convenient to corroborate these results in a situation of greater abundance of rodents, as would be the case when they reach the condition of plague.References
ATKINSON R.P.D. 1997. Practical aspects of trapping small mammals in the tropics. J. Zool. Lond. 242:390-394.
Baile y J.A. 1984. Principles of wildlife management. John Wiley & Sons. USA. 373 p.
Beauvais G., Buskirk S. 1999. Modifying estimates of sampling effort to account for sprung traps. Wildlife Society Bulletin 27:39-43.
Chabreak R.H., Constantin B.U., Hamilton R.B. 1986. Use of chemical ant repellents during small mammals trapping. The Southwestern Naturalist 31:109-110.
Elias D.J., Fall M.W. 1988. The rodent problem in Latin America, pp. 13-28. In: I. Prakash (ed.). Rodent pest management. CRC Press, Inc. Boca Raton, Florida.
Gettinger R.D. 1990. Effects of chemical insect repellent on small mammals trapping yield. Am. Midl. Nat. 124:181-184.
Humbert R. 1968: The growing of sugar cane. Elsevier Publishing Co. Nueva York. 779 p.
Kelt D. 1996. Ecology of small mammals across a strong environmental gradient in southern South America. J. of Mamm. 77:205-219.
King C.M. 1983. The relationships between Beech (Nothofagus sp.) seedfall and populations of mice (Mus musculus) and the demographic and dietary responses of stoats (Mustela erminea) in three New Zealand forest. Journal of Animal Ecology 52:141-166.
Krebs C.J. 1985. Ecología. Estudio de la distribución y la abundancia. 2ª ed. Editorial Harla S.A. de C.V. México. 753 p.
Krebs C.J. 1989. Ecological methodology. Harper & Row, Publishers. New York, USA. 654 p.
Layne J.N. 1987. An enclosure for protecting small mammals traps from disturbance. J. Mamm. 68:666-668.
Lezama M. 1996. Roedores asociados al cultivo del arroz de riego: su relación con el microhábitat y movimiento interparcelas y uso de perchas artificiales por aves rapaces como elemento de control biológico. Tesis de maestría, Universidad Nacional, Heredia, Costa Rica. 97 p.
Marsh R.E. 1988. Rodent problems on the North American Continent, pp. 1-11. In: I. Prakash (ed.). Rodent pest management. CRC Press, Inc. Boca Raton, Florida.
McComb W., Anthon y R., McGarigal K. 1991. Differential vulnerability of small mammals and amphibians to two trap types and two baits in Pacific Northwest forests. Northwest Science 65:109-115.
Mills J., Ellis B., McKee K., Maiztegui J., Childs J. 1991. Habitat associations and relative densities of rodent populations in cultivated areas of central Argentina. J. Mamm. 72:470-479.
Mitchell M.S., Lancia R.A., Jones E.J. 1996. Use of insecticide to control destructive activity of ants during trapping of small mammals. J. Mamm. 77:1107-1113.
Monge J. 1992. Características poblacionales y uso del hábitat de la rata de la caña (Sigmodon hispidus) en Cañas, Guanacaste, Costa Rica. Tesis de maestría, Universidad Nacional, Heredia, Costa Rica. 92 p.
Monge J. 2007. ¿Qué son plagas vertebradas? Agronomía Costarricense 31(2):111-121. Monge J. 2008. Estructura poblacional y actividad reproductiva de la rata de campo (Sigmodon hirsutus) durante un ciclo de producción de maní (Arachis hypogaea) en Costa Rica. Agronomía Costarricense 32(2):161-167.
Monge J. 2009. Roedores plaga de América Central. Editorial UCR. San José, C.R. 150 p.
Nelson L., Clark E. 1973. Correction for strung traps in catch/effort calculations of trapping results. J. Mamm. 54:295-298.
Nicolas V., Col yn M. 2006. Relative efficiency of three types of small mammals in an African rainforest. Belg. J. Zool. 136:107-111.
Ruiz A.M. 1983. Observaciones ecológicas de Sigmodon hispidus en áreas de cultivo de caña de azúcar del Ingenio Taboga, S.A, Cañas, Guanacaste. Tesis de licenciatura, Universidad de Costa Rica, San José, Costa Rica. 63 p.
Ruiz J.R. 1999. Evaluación de la efectividad de dos dosificaciones de brodifacouma para el control de la rata cañera (Sigmodon hispidus) en cultivos de caña de azúcar. Tesis de maestría, Universidad Nacional, Heredia, Costa Rica. 36 p.
Simonetti J. 1986. On the assessment of trapping success. Acta Theriologica 31:171-175. Singleton G.R. 1985. Population dynamics of Mus musculus and its parasites in Mallee Wheatlands in Victoria during and after a drought. Aust. Wildl. Res. 12:437-445.
Stenseth N.C., Leirs H., Skonhotf A., Davis S.A., Pech R.P., Andreassen H.P., Singleton G.R., Lima M., MACHANGU R.M., Makundi R.H., Zhang Z., Brown P.B., Shi D., Wan X. 2003. Mice and rats: the dynamics and bioeconomics of agricultural rodent pests. Front Ecol Environ 1(7):367-375.
Theuerkauf J., Rou ys S., Jourdan H., Gula R. 2011. Efficiency of a new reverse-bait trigger snap trap for invasive rats and a new standardized abundance index. Annales Zoologici Fennici 48:308-318.
Voss R.S., Emmons L.H. 1996. Mammalian diversity in Neotropical lowland rainforests: A preliminar assessment. Bull. American Museum of Natural History 230:1-115.
Woodman N., Timm R., Slade N., Doonan T. 1996. Comparison of traps and baits for censusing small mammals in Neotropical lowlands. J. Mamm 77:274-281.
Zamorano E., Palomo L., Vargas J. 1988. La rata negra (Rattus rattus Lineo, 1758) como plaga de los cultivos ibéricos de caña de azúcar. Detección, estima y control de los daños ocasionados. Boletín de Sanidad Vegetal Plagas 14:227-240.