Intermountain Journal of Sciences

New Zealand Mudsnail Containment: Tests of Chemicals, Copper Strips, Fluorochrome Marking and Terrestrial Movement

2024-02-09T16:08:08-07:00

New Zealand mudsnails (Potamopyrgus antipodarum; NZMS) arc a non-native species that can have a significant influence the structure of an aquatic community. More research on methods that help prevent the human spread and immigration of the species need to be conducted. We performed four studies in an attempt to increase our understanding of NZMS containment. In the first study, we selected several chemicals that are known to kill NZMS and compared the effectiveness of these chemicals when applied to snails either through a fine spray (0.7-1.1 ml) or immersion in 15-min exposures. We found that copper sulfate (504 and 1,008 mg/L as copper), hydrogen peroxide (30,000 and 60,000 mg/L), Clorox Commercial Solutions 409 Cleaner, Degreaser, and Disinfectant, and Hyamine 1622 (3,880 mg/L) all killed 100 percent of NZMS when applied as a fine spray. This indicated that these chemicals can be used by managers or the public to disinfect equipment that cannot nonnally be immersed in a chemical. In the second study, we conducted a series of experiments to determine the aptitude and ability of NZMS to move when placed out of the water and found that NZMS were not inclined to move on land, thus indicating that terrestrial movement ability is not a major factor in the design of in-stream barriers. In the third study, we tested a potential immigration barrier constructed using copper strips and found that snails readily crossed strips ≤ 10 cm wide. In the final study, we found that calcein (100 mg/L for 24-48 hr) and tetracycline (300 mg/L for 24-48 hr) can successfully mark NZMS. The calcein mark was visible for at least 5 wks, whereas the tetracycline mark was visible for at least 2 wks. Thus, these chemicals can be used by ecologists and managers to track NZMS movements.

The Montana Chapter of the American Fisheries Society and The Montana Chapter of the Wildlife Society 2009 Joint Conference

2024-02-12T11:47:03-07:00

These sets of abstracts derive from presentations made at the Montana Chapter of the American Fisheries Society and The Montana Chapter of the Wildlife Society 2009 Joint Conference, "Adapting Fish and Wildlife Management to Human Demographic Change in Montana," February 9-13, 2009, in Kalispell, Montana.

Effects of a 6-Week Jump Training Program Combined with Two Lifting Programs

2024-02-12T10:37:31-07:00

We evaluated the effects ora 6-week jump training program on 12 college basketball players using two strength training programs. The Leg Press (LP) group participated in a strength program using the leg press, and the Power Clean (PC) group used the power clean exercise instead of the leg press. Both groups participated in a 6-week jump training program. Pre-program measurements recorded jump scores for one-foot take off and two-foot take offs. The LP group had an average pre-program vertical of 66.68 and 88.05 cm for the 2-foot and 1-foot take offs, respectively. The PC group had an average pre-program vertical or 72.60 and 88.05 cm for the 2-foot and 1-foot take offs, respectively. The LP group had an average post-program vertical of 70.91 cm for the 2-foot take-off for an increase or about 4.2 cm, and 89.75 cm for the 1-foot take-off for an increase of about 1.7 cm. The PC group had an average post-program vertical of 76.2 cm for the 2-foot take-off for an increase of 3.6 cm, and 90.81 cm for the 1-foot take-off for an increase of about 2.75 cm. The comparison of average increases between the LP and PC groups was not significant (P ≥ 0.05) for either the 2-foot or 1-foot take off.

The Montana Chapter of the American Fisheries Society and The Montana Chapter of the Wildlife Society 2009 Joint Conference

2024-02-12T10:57:01-07:00

The Montana Chapter of the American Fisheries Society and The Montana Chapter of the Wildlife Society 2009 Joint Conference

2024-02-12T12:06:19-07:00