Mortality and Long-Term Retention of Passive Integrated Transponder Tags by Spring Chinook Salmon

2003 ◽  
Vol 23 (3) ◽  
pp. 1015-1019 ◽  
Author(s):  
Matthew R. Dare
2020 ◽  
Vol 11 (2) ◽  
pp. 593-596
Author(s):  
Jonathan R. Meerbeek

Abstract We assessed long-term retention of passive integrated transponder (PIT) tags injected into the subcutaneous musculature between the pelvic fins of adult Walleye Sander vitreus via collecting fish from natural lakes in northwestern Iowa during April 2015, examining fish for the presence of an existing visual implant tag (used as secondary mark), implanting PIT tags in a representative subsample of previously marked fish, and recapturing fish during subsequent annual surveys. Of the 332 Walleye (range = 444–706 mm; mean total length = 544 mm; standard deviation = 43) PIT tagged in 2015, 87 of 88 (98.9%) recaptured from 1 to 4 y after tagging retained their tag. We captured 23 Walleye more than once (≥ 2 y after tagging) and all Walleye had retained their tag on their second or third recapture. This study and others demonstrate that the pelvic girdle was an effective PIT-tagging location for long-term studies evaluating adult Walleye population dynamics. In addition, the low probability of tags being encountered in fish fillets by anglers makes this a desirable tag location for Walleye studies where Walleye are often targeted for consumption. These studies collectively demonstrate that PIT tags inserted into the pelvic girdle of a range of Walleye sizes yield retention rates suitable for advanced population modeling or stocking evaluations.


2006 ◽  
Author(s):  
Pooja K. Agarwal ◽  
Jeffrey D. Karpicke ◽  
Sean H. Kang ◽  
Henry L. Roediger ◽  
Kathleen B. McDermott

2020 ◽  
Author(s):  
alice latimier ◽  
Arnaud Rierget ◽  
Son Thierry Ly ◽  
Franck Ramus

The current study aimed at comparing the effect of three placements of the re-exposure episodes on memory retention (interpolated-small, interpolated-medium, postponed), depending on whether retrieval practice or re-reading was used, and on retention interval (one week vs one month).


2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Enkhtsogt Sainbayar ◽  
Nathan Holt ◽  
Amber Jacobson ◽  
Shalini Bhatia ◽  
Christina Weaver

Abstract Context Some medical schools integrate STOP THE BLEED® training into their curricula to teach students how to identify and stop life threatening bleeds; these classes that are taught as single day didactic and hands-on training sessions without posttraining reviews. To improve retention and confidence in hemorrhage control, additional review opportunities are necessary. Objectives To investigate whether intermittent STOP THE BLEED® reviews were effective for long term retention of hemorrhage control skills and improving perceived confidence. Methods First year osteopathic medical students were asked to complete an eight item survey (five Likert scale and three quiz format questions) before (pretraining) and after (posttraining) completing a STOP THE BLEED® training session. After the surveys were collected, students were randomly assigned to one of two study groups. Over a 12 week intervention period, each group watched a 4 min STOP THE BLEED® review video (intervention group) or a “distractor” video (control group) at 4 week intervals. After the 12 weeks, the students were asked to complete an 11 item survey. Results Scores on the posttraining survey were higher than the pretraining survey. The median score on the five Likert scale items was 23 points for the posttraining survey and 14 points for the pretraining survey. Two of the three knowledge based quiz format questions significantly improved from pretraining to posttraining (both p<0.001). On the 11 item postintervention survey, both groups performed similarly on the three quiz questions (all p>0.18), but the intervention group had much higher scores on the Likert scale items than the control group regarding their confidence in their ability to identify and control bleeding (intervention group median = 21.4 points vs. control group median = 16.8 points). Conclusions Intermittent review videos for STOP THE BLEED® training improved medical students’ confidence in their hemorrhage control skills, but the videos did not improve their ability to correctly answer quiz-format questions compared with the control group.


2021 ◽  
Author(s):  
Alicia Forsberg ◽  
Dominic Guitard ◽  
Eryn J. Adams ◽  
Duangporn Pattanakul ◽  
Nelson Cowan

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