Since the year 2000, a plan begun for the numerical control of wild boars (Sus scrofa) in the province of Treviso. Initially, this type of control was conducted only by the Provincial Police, after this first phase the plan involved certified operators (hunters). The objective is to act on the determinating on adult females in order to strongly limit the increment of the whole population. The following 3 control techniques have been utilized: 1) shooting from selected sites, 2) live trapping and killing in cage traps (chiusini), 3) “random” shooting by the Provincial Police. The data were collected by operators and police agents immediately after the shooting of each single animal by filling a record card called the “ Record card of Information and Shooting”, and subsequently registered by the Hunting Office of the Province of Treviso. The following age classes have been established: younger than 4 months (striated), between 5 and 12 months (reds), and older than 12 months (blacks). The present work takes into consideration and analyses the data relative to the general composition of the registered animals and the biometrical dimensions collected (length from head to trunk, metatarsus length, chest measurement and length of the snout). The shootings took place throughout the whole territory of the province, during the period from January 2006 through September 2009 inclusive. During this time, a total of 1264 animals were captured, with a maximum number of 397 boars being captured in 2008. The most frequently applied technique was shooting from selected sites and involved mainly animals older than 12 months (blacks). With the technique of cage traps, on the contrary, most of the animals captured were below 12 months (striated and reds), even if the use of this particular method was limited. The “random” shooting method was used less and less over the course of these 5 years. Concerning sex and age, the composition of the registered cases has shown that the specifications set forth for the implementation of this control plan have been adhered only partially. In fact, although the animals above 12 months (blacks) have been the ones most frequently captured, the number of females shot was inferior to that of the males. It is evident that the presence of wild boars in the Province of Treviso involves all alpine hunting district (northern area of the province) and only sporadically the hunting areas of the plan. According to the analysis of the data regarding biometrics, it has been revealed that the differences between males and females, although limited and concerning above all only 2 parameters (chest measurement and length head trunk), reveal a remarkable variation of the muscle mass and, consequently, of the weight. The correlations between total weight and the 4 morphometric parameters (length from head to trunk, metatarsus length, chest measurement and length of the snout) are close, and decrease only slightly with an increase in age.
Il controllo del cinghiale (Sus scrofa) in provincia di Treviso: composizione del prelievo e biometria.
Guadagnin, Alessandro
2011/2012
Abstract
Since the year 2000, a plan begun for the numerical control of wild boars (Sus scrofa) in the province of Treviso. Initially, this type of control was conducted only by the Provincial Police, after this first phase the plan involved certified operators (hunters). The objective is to act on the determinating on adult females in order to strongly limit the increment of the whole population. The following 3 control techniques have been utilized: 1) shooting from selected sites, 2) live trapping and killing in cage traps (chiusini), 3) “random” shooting by the Provincial Police. The data were collected by operators and police agents immediately after the shooting of each single animal by filling a record card called the “ Record card of Information and Shooting”, and subsequently registered by the Hunting Office of the Province of Treviso. The following age classes have been established: younger than 4 months (striated), between 5 and 12 months (reds), and older than 12 months (blacks). The present work takes into consideration and analyses the data relative to the general composition of the registered animals and the biometrical dimensions collected (length from head to trunk, metatarsus length, chest measurement and length of the snout). The shootings took place throughout the whole territory of the province, during the period from January 2006 through September 2009 inclusive. During this time, a total of 1264 animals were captured, with a maximum number of 397 boars being captured in 2008. The most frequently applied technique was shooting from selected sites and involved mainly animals older than 12 months (blacks). With the technique of cage traps, on the contrary, most of the animals captured were below 12 months (striated and reds), even if the use of this particular method was limited. The “random” shooting method was used less and less over the course of these 5 years. Concerning sex and age, the composition of the registered cases has shown that the specifications set forth for the implementation of this control plan have been adhered only partially. In fact, although the animals above 12 months (blacks) have been the ones most frequently captured, the number of females shot was inferior to that of the males. It is evident that the presence of wild boars in the Province of Treviso involves all alpine hunting district (northern area of the province) and only sporadically the hunting areas of the plan. According to the analysis of the data regarding biometrics, it has been revealed that the differences between males and females, although limited and concerning above all only 2 parameters (chest measurement and length head trunk), reveal a remarkable variation of the muscle mass and, consequently, of the weight. The correlations between total weight and the 4 morphometric parameters (length from head to trunk, metatarsus length, chest measurement and length of the snout) are close, and decrease only slightly with an increase in age.File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/14726