Achieving Sea Lamprey Control in Lake Champlain

Bradley Young; BJ Allaire; Stephen Smith

doi:10.3390/fishes6010002

Achieving Sea Lamprey Control in Lake Champlain

Fishes ◽

10.3390/fishes6010002 ◽

2021 ◽

Vol 6 (1) ◽

pp. 2

Author(s):

Bradley Young ◽

BJ Allaire ◽

Stephen Smith

Keyword(s):

Control Program ◽

Sea Lamprey ◽

Effective Control ◽

Lake Champlain ◽

Larval Population ◽

Control Effort ◽

Assessment And Monitoring ◽

Term Evaluation ◽

The Relationship

The control of parasitic sea lamprey in Lake Champlain has been a necessary component of its fishery restoration and recovery goals for 30 years. While adopting the approach of the larger and established sea lamprey control program of the Laurentian Great Lakes, local differences emerged that shifted management focus and effort as the program evolved. Increased investment in lamprey assessment and monitoring revealed under-estimations of population density and distribution in the basin, where insufficient control efforts went unnoticed. As control efforts improved in response to a better understanding of the population, the effects of lamprey on the fishery lessened. A long-term evaluation of fishery responses when lamprey control was started, interrupted, delayed, and enhanced provided evidence of a recurring relationship between the level of control effort applied and the measured suppression of the parasitic sea lamprey population. Changes in levels of control efforts over time showed repeatedly that measurable suppression of the parasitic population required effective control of 80% of the known larval population. Understanding the importance of assessment and monitoring and the relationship between control effort and population suppression has led to recognition that a comprehensive, not incremental, approach is needed to achieve effective control of sea lamprey in Lake Champlain.

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Long-term impact of coordinated warren ripping programmes on rabbit populations

Wildlife Research ◽

10.1071/wr09103 ◽

2010 ◽

Vol 37 (1) ◽

pp. 68 ◽

Cited By ~ 15

Author(s):

S. R. McPhee ◽

K. L. Butler

Keyword(s):

Population Decline ◽

Biological Control Agents ◽

Control Effort ◽

Rabbit Haemorrhagic Disease ◽

Long Term Impact ◽

Haemorrhagic Disease ◽

The Impact ◽

The Relationship

Context. It is important to examine the long-term effectiveness of rabbit management programmes based on warren destruction using modern warren ripping machinery, at a time when the continuing impacts of both myxomatosis and rabbit haemorrhagic disease (RHD) may have reduced the capacity of rabbit populations to recover. Aims. To determine the long-term effectiveness of coordinated warren ripping programmes in reducing rabbit densities and maintaining these low densities. Methods. Commencing in 1998, 14 sites with coordinated warren ripping programmes and three sites without rabbit control were monitored within Victoria. Spotlight counts of rabbit numbers recorded before the spread of RHD and warren ripping were compared with numbers recorded from 2005 to 2008. The efficacy of coordinated warren ripping programmes was assessed in relation to the machinery used, the manner in which the warrens were ripped, the characteristics of the ripped areas and the impact of follow-up control. Key results. Warren ripping programmes were very successful in reducing rabbit numbers for up to 10 years, whereas rabbit populations that were not managed returned to pre-RHD densities. The most effective warren ripping programmes, which reduced populations to 97% of the pre-RHD densities and maintained them at this level, used heavy, powerful ripping machinery to rip all warrens within 12 months. There was no evidence that the relationship between rabbit population decline and warren ripping was affected by the characteristics of the ripped areas or the follow-up control effort. Conclusions. Following the spread of RHD in areas where warren ripping is practicable, well-managed ripping programmes provide an immediate solution for achieving and sustaining low rabbit populations. Implications. The efficacy of RHD in regulating rabbit populations has diminished. The improvement of existing or the development of new biological control agents could take decades. In contrast, coordinated warren ripping programmes provide more predictable long-term reductions in rabbit populations.

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Information support, illness perceptions, and distress in survivors of differentiated thyroid cancer

Journal of Health Psychology ◽

10.1177/1359105317692143 ◽

2017 ◽

Vol 24 (9) ◽

pp. 1201-1209 ◽

Cited By ~ 5

Author(s):

Chelsea H Wiener ◽

Jeffrey E Cassisi ◽

Daniel Paulson ◽

Olga Husson ◽

Rema A Gupta

Keyword(s):

Thyroid Cancer ◽

Patient Reported Outcomes ◽

Differentiated Thyroid Cancer ◽

Illness Perceptions ◽

Information Support ◽

Cancer Data ◽

Patient Reported ◽

Term Evaluation ◽

The Relationship

Survivors of differentiated thyroid cancer report significant distress. This study examines illness perceptions as mediating the relationship between information support and distress among survivors of differentiated thyroid cancer. Data were obtained from the Patient Reported Outcomes Following Initial Treatment and Long-term Evaluation of Survivorship registry. Model results revealed that greater information support was associated with better illness perceptions, and that better illness perceptions were associated with less distress. Information support and distress were indirectly related via illness perceptions. Results highlight the importance of addressing illness perceptions in this population and suggest that informational interventions may help serve this function.

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Sterility Method of Pest Control and Its Potential Role in an Integrated Sea Lamprey (Petromyzon marinus) Control Program

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f80-252 ◽

1980 ◽

Vol 37 (11) ◽

pp. 2108-2117 ◽

Cited By ~ 40

Author(s):

Lee H. Hanson ◽

Patrick J. Manion

Keyword(s):

Great Lakes ◽

Pest Control ◽

Integrated Control ◽

Petromyzon Marinus ◽

Control Program ◽

Sea Lamprey ◽

Effective Control ◽

Control Fish ◽

Sea Lampreys ◽

Normal Males

The sterility method of pest control could be an effective tool in the sea lamprey (Petromyzon marinus) control program in the Great Lakes. Some of the requirements for its successful application have been met. A field study demonstrated that the release of male sea lampreys, sterilized by the injection of 100 mg/kg of P,P-bis(1-aziridinyl)-N-methylphosphinothioic amide (bisazir), will reduce the number of viable larvae produced. The actual reduction in reproductive success that occurred was directly related to the ratio of sterile to normal males in the population. The technique can be used in many ways in an integrated control program and has considerable potential for the more effective control of the sea lamprey. Eradication is a distinct possibility.Key words: sea lamprey, Petromyzon marinus; pest control, fish control, sterile-male technique, sterilization, chemosterilants, bisazir, Great Lakes

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Long-Term Evaluation of Sumatriptan and Naproxen Sodium for the Acute Treatment of Migraine in Adolescents

Yearbook of Neurology and Neurosurgery ◽

10.1016/j.yneu.2012.04.038 ◽

2012 ◽

Vol 2012 ◽

pp. 26-28

Author(s):

A. Panagariya

Keyword(s):

Acute Treatment ◽

Naproxen Sodium ◽

Term Evaluation

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434 Optimization of atrio-ventricular and inter-ventricular delay in patients on cardiac resynchronisation therapy: a long-term evaluation

European Journal of Heart Failure Supplements ◽

10.1016/s1567-4215(05)80276-0 ◽

2005 ◽

Vol 4 (1) ◽

pp. 100-100

Keyword(s):

Cardiac Resynchronisation Therapy ◽

Cardiac Resynchronisation ◽

Resynchronisation Therapy ◽

Term Evaluation

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Long-term evaluation of clinical outcome after microvascular decompression for trigeminal neuralgia – Langzeitauswertung der klinischen Ergebnisse nach mikrovaskulärer Dekompression bei Trigeminusneuralgie

Klinische Neurophysiologie ◽

10.1055/s-0034-1371310 ◽

2014 ◽

Vol 45 (01) ◽

Author(s):

B Bischoff ◽

V Kneissl ◽

O Ganslandt ◽

R Naraghi ◽

M Buchfelder ◽

...

Keyword(s):

Clinical Outcome ◽

Trigeminal Neuralgia ◽

Microvascular Decompression ◽

Term Evaluation

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Multi-Center Calibration of the Second Reference Material for Thromboplastin, Rabbit, Plain, Coded CRM 149R

Thrombosis and Haemostasis ◽

10.1055/s-0038-1648132 ◽

1991 ◽

Vol 65 (03) ◽

pp. 263-267 ◽

Cited By ~ 3

Author(s):

A M H P van den Besselaar ◽

R M Bertina

Keyword(s):

Reference Material ◽

Standard Error ◽

Standard Errors ◽

Sensitivity Index ◽

Long Term Stability ◽

Significant Bias ◽

The Mean ◽

The Relationship ◽

International Sensitivity Index

SummaryIn a collaborative trial of eleven laboratories which was performed mainly within the framework of the European Community Bureau of Reference (BCR), a second reference material for thromboplastin, rabbit, plain, was calibrated against its predecessor RBT/79. This second reference material (coded CRM 149R) has a mean International Sensitivity Index (ISI) of 1.343 with a standard error of the mean of 0.035. The standard error of the ISI was determined by combination of the standard errors of the ISI of RBT/79 and the slope of the calibration line in this trial.The BCR reference material for thromboplastin, human, plain (coded BCT/099) was also included in this trial for assessment of the long-term stability of the relationship with RBT/79. The results indicated that this relationship has not changed over a period of 8 years. The interlaboratory variation of the slope of the relationship between CRM 149R and RBT/79 was significantly lower than the variation of the slope of the relationship between BCT/099 and RBT/79. In addition to the manual technique, a semi-automatic coagulometer according to Schnitger & Gross was used to determine prothrombin times with CRM 149R. The mean ISI of CRM 149R was not affected by replacement of the manual technique by this particular coagulometer.Two lyophilized plasmas were included in this trial. The mean slope of relationship between RBT/79 and CRM 149R based on the two lyophilized plasmas was the same as the corresponding slope based on fresh plasmas. Tlowever, the mean slope of relationship between RBT/79 and BCT/099 based on the two lyophilized plasmas was 4.9% higher than the mean slope based on fresh plasmas. Thus, the use of these lyophilized plasmas induced a small but significant bias in the slope of relationship between these thromboplastins of different species.

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Risk Attitude and Corporate Investment under Output Market Uncertainty: Evidence from The Mekong River Delta, Vietnam

Journal of Economics and Development ◽

10.33301/2016.18.02.04 ◽

2016 ◽

pp. 59-70

Author(s):

Ninh Le Khuong ◽

Nghiem Le Tan ◽

Tho Huynh Huu

Keyword(s):

Negative Relationship ◽

Risk Attitude ◽

Business Strategies ◽

Risk Averse ◽

Market Uncertainty ◽

Firm Investment ◽

Output Market ◽

The Impact ◽

The Relationship

This paper aims to detect the impact of firm managers’ risk attitude on the relationship between the degree of output market uncertainty and firm investment. The findings show that there is a negative relationship between these two aspects for risk-averse managers while there is a positive relationship for risk-loving ones, since they have different utility functions. Based on the findings, this paper proposes recommendations for firm managers to take into account when making investment decisions and long-term business strategies as well.

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