Modern Snares for Capturing Mammals: - Association of Fish and ...

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facilitate over-harvest of furbearer populations, and could negatively impact other gamepopulations (e.g., deer). While the goals of harvest selectivity and population conservationcertainly remain important in modern wildlife management, many of the premises underlyingpast concerns are either less relevant today, or new options exist for minimizing those concerns.Recently, there has been renewed interest by natural resource agencies to better understandsnares as a device for capturing mammals. This interest has arisen for several reasons, includingcontinued development of new designs or mechanical options for snares, evolving stateregulations governing snare use, the development of Best Management Practices for trapping,and increased potential for use in wildlife research. While these developments have highlightedthe potential versatility and humaneness of snares, they have also highlighted the need forincreased awareness of modern snares amongst resource professionals, and the need tostandardize terminology used for describing snares and snare components. The lack offamiliarity and language consistency has produced confusion among the various constituents andultimately hindered efforts to increase awareness of modern snares.SNARE COMPONENTSBefore offering descriptions and definitions of snare components, we first offer a basic definitionof a snare. While our definition of a snare emphasizes wire as the primary material used in theconstruction of modern snares, we acknowledge that more ‘primitive’ materials (e.g., plant oranimal fibers) may still be used in some situations or locations, and that alternative modernmaterials could be developed or used in the future.Snare - a type of capture device that uses a loop of wire, stranded wire, or wire rope designedand set to close around the neck, torso, foot or leg of an animal.While we are unaware of any official standard for describing or defining snare components,where possible we have adopted definitions that are generally consistent with industry language.We recognize our definitions do not supplant any current language used in individual statepolicies or laws. Nevertheless, we encourage states to adopt consistent language to minimizeconfusion amongst snare manufacturers, snare users, and natural resource agencies.Snare CableThe material that forms the loop of a snare and extends to the point at which the snare isanchored is frequently referred to as the snare ‘cable’. Modern snare cable is typicallyconstructed with some type of wire (e.g., galvanized or stainless steel). The cable forms theprimary component to which most other components are attached. We offer the followingdefinitions to clarify both the material and design of modern snare cable.Wire - a continual span of metal that has been produced by compression and elongation of largerdiameter metal rods.6Ver. 1.0
Strand - an assembly of multiple wires that are helically woundaround an axis, fiber, or wire center.While single-wire snare designs have been used in the past, and arestill commonly used for snaring snowshoe hares, most current snaredesigns employ multi-wire construction. The common conventionfor labeling these multi-wire designs is: # of strands times the # ofwires per strand. For example, 7 X 7 means the design iscomposed of 7 strands, with 7 wires per strand, yielding a total of49 wires. Such material is often categorized by the number ofstrands:Single-Strand construction - composed of a single strand; oftenreferred to as ‘stranded wire’. Examples most familiar to trappersinclude 1X19, and 1X7. We emphasize that “single-strand” doesNOT equate with “single-wire”.Multi-Strand construction - composed of multiple strands; oftenreferred to as ‘wire rope’ or ‘cable’. Examples familiar to trappersinclude 7X7, and 7X19.Note: Within the trapping community, both single-strand andmulti-strand material is generically referred to as ‘cable’.Hereafter, we use the term ‘cable’ to denote any multi-wire design.The above strand definitions describe differences in overall cableconstruction. However, it is also important to understanddifferences in construction of an individual strand.Single-Layer Strand – strand with only 1 layer of wireshelically wound around the axis, fiber, or wire center.This strand construction is used, for example, in 1X7 stranded wireand in each individual strand for 7X7 wire rope. In 1X7 and 7X7,the 7-wired strand(s) are constructed with a ‘1-6 single-layer’design, meaning 6 wires helically wound around 1 center wire.Two-Layer Strand – strand with 2 separate layers of wireshelically wound in opposite directions around the axis, fiber, orwire center.This construction is used, for example, in 1X19 stranded wire andin each of the seven strands of 7X19 wire rope (not shown here).In both, the 19-wired strand(s) are constructed with a ‘1-6-12 twolayer’design, meaning a center wire with 6 wires wound around itone direction, and 12 more wires wound in the opposite direction.231141X7651 1221113 2 614 3 55486 71X1910977X7Ver. 1.0
Page 2 and 3: ACKNOWLEDGMENTSThis document was pr
Page 4 and 5: FORWARD“Modern Snares for Capturi
Page 8 and 9: In either single-strand designs wit
Page 10 and 11: Most snare locks currently availabl
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Page 14 and 15: SNARING SYSTEM COMPONENTSIn additio
Page 16 and 17: snaring system can be characterized
Page 18 and 19: the animal is able wrap the snare c
Page 20 and 21: caught, but a deer may simply walk
Page 22 and 23: animals may be more apt to see larg
Page 24: There will always be a need to desc

Modern Snares for Capturing Mammals: - Association of Fish and ...

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