Postfeeding Larval Dispersal Behavior of Late Season Blow Flies (Calliphoridae) in Southern Ontario, Canada

Turpin, Chantal; Kyle, Christopher J.; Beresford, David

doi:10.1111/1556-4029.12469

Cited by 6 publications

(2 citation statements)

References 31 publications

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“…; Turpin et al. ). Fano values were calculated by first determining the number of Sea Lampreys observed in the DIDSON image for each 5‐min interval throughout a 30‐min period and then by dividing the variance of these count data by their mean.…”

Section: Methodsmentioning

confidence: 98%

“…To determine whether within-stream movement was independent among individuals (i.e., whether they moved singly or in groups: objective 3), temporal clustering (i.e., shoaling) among individuals at a high resolution (i.e., minute) was identified by evaluating Fano values (i.e., variance-to-mean ratios). Fano values have previously been used in ecological studies as a way to determine whether individuals were relatively clustered or dispersed (Banerjee 1976;Ludwig and Reynolds 1988;Tuya et al 2004;Turpin et al 2014). Fano values were calculated by first determining the number of Sea Lampreys observed in the DIDSON image for each 5-min interval throughout a 30min period and then by dividing the variance of these count data by their mean.…”

Section: Sea Lamprey Stream Entry and Didsonmentioning

confidence: 99%

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Characterization of Sea Lamprey Stream Entry Using Dual‐Frequency Identification Sonar

et al. 2018

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Effective methods to control invasive Sea Lampreys Petromyzon marinus in the Laurentian Great Lakes often rely on knowledge of the timing of the Sea Lamprey spawning migration, which has previously been characterized using data gathered from traps. Most assessment traps are located many kilometers upstream from the river mouth, so less is known about when Sea Lampreys enter spawning streams and which environmental cues trigger their transition from lakes to rivers. To decide how to develop barriers and traps that target Sea Lampreys when they enter a stream, the stream entry of Sea Lampreys into a Lake Huron tributary during 2 years was assessed using dual‐frequency identification sonar (DIDSON). Sea Lampreys entered the stream in low densities when temperatures first reached 4°C, which was up to 6 weeks and a mean of 4 weeks earlier than when they were first captured in traps located upstream. The probability of stream entry was significantly affected by stream temperature and discharge, and stream entry timing peaked when stream temperatures rose to 12°C and discharge was high. Examination of the entry at a finer temporal resolution (i.e., minutes) indicated that Sea Lampreys did not exhibit social behavior (e.g., shoaling) during stream entry. Our findings indicate that Sea Lampreys may be vulnerable to alternative trap types near river mouths and hydraulic challenges associated with traditional traps. Also, seasonal migration barriers near stream mouths may need to be installed soon after ice‐out to effectively block the entire adult Sea Lamprey cohort from upstream spawning habitat.

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Section: Methodsmentioning

confidence: 98%

Section: Sea Lamprey Stream Entry and Didsonmentioning

confidence: 99%

Characterization of Sea Lamprey Stream Entry Using Dual‐Frequency Identification Sonar

et al. 2018

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Post-feeding activity of Lucilia sericata (Diptera: Calliphoridae) on common domestic indoor surfaces and its effect on development

Robinson

Bryson

Bulling

et al. 2018

Forensic Science International

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Developmental data of forensically important blowflies used by entomologists to estimate minimum post mortem interval (mPMI) are established under controlled laboratory conditions for various temperature ranges throughout the stages of egg, 1st-3rd instar, puparia, and adult fly emergence. However, environmental conditions may influence the patterns of development and behaviour of blowflies, potentially impacting on these established development rates. Previous studies investigating indoor colonisation have focused on the delay to oviposition, with behaviour during the post-feeding phase in this setting often overlooked. The environment in which third instar larvae disperse when searching for a pupariation site may vary drastically at both outdoor and indoor scenarios, influencing the activity and distance travelled during this phase and possibly affecting developmental rates. This study investigated the effect of eight common domestic indoor surfaces on dispersal time, distance travelled, and behaviour of post-feeding Lucilia sericata as well as any resulting variation in development. It was found that pupariation and puparia length within a pupariation medium of sawdust (often used in laboratory settings) produced comparable results with that of carpeted environments (those deemed to be 'enclosed'). Non-carpeted environments (those which were 'exposed') produced a delay to pupariation likely due to increased activity and energy expenditure in searching for pupariation sites which enabled burial. In addition, the observed speed of travel during dispersal was seen via time lapse photography to be greater within 'exposed' conditions. Larvae which dispersed upon burnt laminate flooring were observed to travel faster than in all other conditions and showed the only significant variation (P=0.04) in the day of emergence in comparison to the control condition of sawdust. This study has demonstrated that wandering phase activity is affected by the environmental surface which has potential implications for estimating both the distance travelled by dispersing larvae in indoor conditions and with further research, may be a consideration in mPMI calculations.

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The effect of flat and undulating terrain on the post-feeding dispersal distance from carcasses of blow fly larvae (Calliphoridae: Lucilia illustris )

Freiburger,

Kyle,

Beresford

2024

Canadian Society of Forensic Science Journal

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Postfeeding Larval Dispersal Behavior of Late Season Blow Flies (Calliphoridae) in Southern Ontario, Canada

Cited by 6 publications

References 31 publications

Characterization of Sea Lamprey Stream Entry Using Dual‐Frequency Identification Sonar

Characterization of Sea Lamprey Stream Entry Using Dual‐Frequency Identification Sonar

Post-feeding activity of Lucilia sericata (Diptera: Calliphoridae) on common domestic indoor surfaces and its effect on development

The effect of flat and undulating terrain on the post-feeding dispersal distance from carcasses of blow fly larvae (Calliphoridae: Lucilia illustris )

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