Journal articles: 'Bio-logger'

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SAMEJIMA, Masaki, Takuya MAEKAWA, Yasue KISHINO, Junichi NAKAI, and Ken YODA. "Development of Event-driven Logger for Bio-logging." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2017 (2017): 2A2—P06. http://dx.doi.org/10.1299/jsmermd.2017.2a2-p06.

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Schlichting, Alexander D., and Ephrahim Garcia. "A self-reliant avian bio-logger: energy storage considerations." Smart Materials and Structures 23, no. 1 (December 6, 2013): 015004. http://dx.doi.org/10.1088/0964-1726/23/1/015004.

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Abe, Takuma, Natsumi Kubo, Kazuki Abe, Hirokazu Suzuki, Yuichi Mizutani, Ken Yoda, Riichiro Tadakuma, and Yuichi Tsumaki. "Development of Data Logger Separator for Bio-Logging of Wild Seabirds." Journal of Robotics and Mechatronics 33, no. 3 (June 20, 2021): 446–56. http://dx.doi.org/10.20965/jrm.2021.p0446.

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The bio-logging technique is extensively used in the fields of ecology and ethology, wherein a data logger, such as a sensor or camera, is attached to the target animal’s body to collect the required data. In this method, the efficiency of recovery of the data logger is not ideal. In this study, we proposed a new recovery method, with the aim of addressing the aforementioned problem in bio-logging. The authors previously fabricated a data-logger separator, which weighed approximately 10 g, and was targeted at small seabirds. Because there were some problems associated with the circuit board and the separation performance of this device, we modified the device to overcome the previous drawbacks. We fabricated a flexible printed circuit to improve the operation of the mounted actuator and wireless microcomputer, and improve the efficiency of the fabrication process. We conducted an experiment to determine the proper length and position at which the actuator is attached, in order to achieve a stable motion. We thus fabricated a new prototype with these improvements and performed an operational test at low temperatures from a particular distance, simulating actual usage in a natural environment. The results demonstrated that separation occurred without failure, thus indicating that the separator can be efficiently used in practical environment.

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Virens, Josef, and Alison Cree. "Further miniaturisation of the Thermochron iButton to create a thermal bio-logger weighing 0.3 g." Journal of Experimental Biology 221, no. 11 (April 19, 2018): jeb176354. http://dx.doi.org/10.1242/jeb.176354.

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Cook, A. J., G. D. Gargiulo, T. Lehmann, and T. J. Hamilton. "Open platform, eight‐channel, portable bio‐potential and activity data logger for wearable medical device development." Electronics Letters 51, no. 21 (October 2015): 1641–43. http://dx.doi.org/10.1049/el.2015.2764.

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Nekhubvi, Vhutshilo, and David Tinarwo. "Long-term temperature measurement: Biogas digesters fermenting slurry." Journal of Energy in Southern Africa 28, no. 3 (September 22, 2017): 99. http://dx.doi.org/10.17159/2413-3051/2017/v28i3a1437.

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This paper reports the results of the temperature profile of the unheated and unstirred continuous fermenting bio-slurry in a fixed-dome Deenbandhu 2000 model. The digester is a brick-built system of bulk size 6 m3. The digester was monitored for eight months, measuring internal bio-slurry temperature. A K-type nickel chromium-nickel temperature sensor with a sensitivity of approximately 41 µV and response time of 0.8s in liquids was positioned at the centre of the digester to measure the slurry temperature. The sensor was connected to the data logger and programmed to record temperature readings every second for the entire study period. The study results reported give a clear indication about the reaction of bio-slurry temperature in the digester at a local level, particularly for the eight months’ period, which covered all seasons. The calculated values of the daily average temperature reveal that the digester was operating within the range of psychrophilic 10.32 and mesophilic 28.80 , although it sometimes operated at 35 and above during certain hours in summer. This study is useful for anaerobic digestion processes for biogas production. The results obtained can be used as a basis to estimate the amount of heat required to raise the temperature of digesters to reach an optimum temperature of mesophilic digesters.

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Akamatsu, Tomonari, Akihiko Matsuda, Shiro Suzuki, Ding Wang, Kexiong Wang, Michihiko Suzuki, Hiroyuki Muramoto, Naoki Sugiyama, and Katsunori Oota. "New Stereo Acoustic Data Logger for Free-ranging Dolphins and Porpoises." Marine Technology Society Journal 39, no. 2 (June 1, 2005): 3–9. http://dx.doi.org/10.4031/002533205787443980.

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To observe the bio-sonar behavior of dolphins and porpoises, a miniature stereo acoustic data logger was developed to record the echolocation clicks of small cetaceans. The 'A-tag' device is small enough to be attached to a dolphin or porpoise. A-tag can record the sonar pulse intensity, precise inter-click-intervals, and time difference between sounds arriving at two different hydrophones. The A-tag works for up to 60 hours continuously and allows observation of the sonar target range of free-ranging odontocetes. The time of arrival at the two hydrophones on the tag allows vocalizations from nearby individuals to be identified. A less invasive tagging technique using a suction cup was also developed. A mean attachment time of 15 hours was obtained on free-ranging finless porpoises in a freshwater system in China. The A-tag proved to be a useful tool for investigating the underwater echolocation behavior of odontocetes.

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Rast, Wanja, Leon M. F. Barthel, and Anne Berger. "Music Festival Makes Hedgehogs Move: How Individuals Cope Behaviorally in Response to Human-Induced Stressors." Animals 9, no. 7 (July 18, 2019): 455. http://dx.doi.org/10.3390/ani9070455.

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Understanding the impact of human activities on wildlife behavior and fitness can improve their sustainability. In a pilot study, we wanted to identify behavioral responses to anthropogenic stress in an urban species during a semi-experimental field study. We equipped eight urban hedgehogs (Erinaceus europaeus; four per sex) with bio-loggers to record their behavior before and during a mega music festival (2 × 19 days) in Treptower Park, Berlin. We used GPS (Global Positioning System) to monitor spatial behavior, VHF (Very High Frequency)-loggers to quantify daily nest utilization, and accelerometers to distinguish between different behaviors at a high resolution and to calculate daily disturbance (using Degrees of Functional Coupling). The hedgehogs showed clear behavioral differences between the pre-festival and festival phases. We found evidence supporting highly individual strategies, varying between spatial and temporal evasion of the disturbance. Averaging the responses of the individual animals or only examining one behavioral parameter masked these potentially different individual coping strategies. Using a meaningful combination of different minimal-invasive bio-logger types, we were able to show high inter-individual behavioral variance of urban hedgehogs in response to an anthropogenic disturbance, which might be a precondition to persist successfully in urban environments.

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Freeman, Robin, Ben Dean, Holly Kirk, Kerry Leonard, Richard A. Phillips, Chris M. Perrins, and Tim Guilford. "Predictive ethoinformatics reveals the complex migratory behaviour of a pelagic seabird, the Manx Shearwater." Journal of The Royal Society Interface 10, no. 84 (July 6, 2013): 20130279. http://dx.doi.org/10.1098/rsif.2013.0279.

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Understanding the behaviour of animals in the wild is fundamental to conservation efforts. Advances in bio-logging technologies have offered insights into the behaviour of animals during foraging, migration and social interaction. However, broader application of these systems has been limited by device mass, cost and longevity. Here, we use information from multiple logger types to predict individual behaviour in a highly pelagic, migratory seabird, the Manx Shearwater ( Puffinus puffinus ). Using behavioural states resolved from GPS tracking of foraging during the breeding season, we demonstrate that individual behaviours can be accurately predicted during multi-year migrations from low cost, lightweight, salt-water immersion devices. This reveals a complex pattern of migratory stopovers: some involving high proportions of foraging, and others of rest behaviour. We use this technique to examine three consecutive years of global migrations, revealing the prominence of foraging behaviour during migration and the importance of highly productive waters during migratory stopover.

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Jonsson, Jonas, Katarina Smedfors, Leif Nyholm, and Greger Thornell. "Towards Chip-Based Salinity Measurements for Small Submersibles and Biologgers." International Journal of Oceanography 2013 (November 27, 2013): 1–11. http://dx.doi.org/10.1155/2013/529674.

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Water’s salinity plays an important role in the environment. It can be determined by measuring conductivity, temperature, and depth (CTD). The corresponding sensor systems are commonly large and cumbersome. Here, a 7.5 × 3.5 mm chip, containing microstructured CTD sensor elements, has been developed. On this, 1.5 mm2 gold finger electrodes are used to measure the impedance, and thereby the conductivity of water, in the MHz frequency range. Operation at these frequencies resulted in higher sensitivities than those at sub-MHz frequencies. Up to 14 kΩ per parts per thousand salt concentration was obtained repeatedly for freshwater concentrations. This was three orders of magnitude higher than that obtained for concentrations in and above the brackish range. A platinum electrode is used to determine a set ambient temperature with an accuracy of 0.005°C. Membranes with Nichrome strain gauges responded to a pressure change of 1 bar with a change in resistance of up to 0.21 Ω. A linear fit to data over 7 bars gave a sensitivity of 0.1185 Ω/bar with an R2 of 0.9964. This indicates that the described device can be used in size-limited applications, like miniaturized submersibles, or as a bio-logger on marine animals.

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Carey, Mark J. "Leg-mounted data-loggers do not affect the reproductive performance of short-tailed shearwaters (Puffinus tenuirostris)." Wildlife Research 38, no. 8 (2011): 740. http://dx.doi.org/10.1071/wr11024.

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Context Attaching tracking devices to several avian species could produce negative outcomes. Of particular concern are potential alterations to birds’ reproductive, flight, diving and foraging performances. Attachment of devices may also lead to a bias in results or an inaccurate interpretation of results as birds may not behave ‘normally’. Aims The aims of the present study were to evaluate the possible effects of a 5.4-g global location-sensing (GLS) data-logger attached to a modified aluminium band on short-tailed shearwaters (Puffinus tenuirostris (Temminck, 1835)), representing 0.7–1% of adult body mass, breeding on Great Dog Island, Furneaux Group, Tasmania. Methods Eighty birds were monitored during two breeding seasons. Twenty-seven GLS data-loggers were attached to birds in 2007, with the remaining birds acting as controls. Breeding success, return rates and body condition were compared between equipped and non-equipped birds. Key results In the year of deployment, no evidence of negative effects of attaching data-loggers on hatching success, pre-fledging chick mass or survival was found. However, chicks reared by non-equipped adults were skeletally larger. After controlling for body size, no significant effect on chick body condition was detected between the two groups. In the year of recapture, significantly more GLS-equipped than non-equipped adults returned to the colony. There were no differences in adult body condition, egg size, hatching or fledging success between the two groups. After GLS devices were removed, chick mass and size at pre-fledging were equal between those raised by GLS-equipped and non-equipped adults. Conclusions These results suggest that appropriate-sized data-loggers are a relatively benign method of obtaining at-sea foraging and behavioural information from seabirds. However, loggers may be affecting parental care of offspring and this requires further investigation. Importantly, no carry-over effects were observed once the data-loggers were removed after 12 months. Implications Identifying any effects of data-logger attachment is imperative for animal welfare but also for the accuracy of tracking data and subsequent interpretation. GLS devices are rapidly becoming smaller and lighter, and if this trend continues, unlock unprecedented opportunities for pelagic seabird research. During long deployments, monitoring individuals and assessing their health and reproductive output should be considered an integral part of all bio-logging studies.

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Martin, Awaludin, and Fachri Husaini. "Design, Manufacturing and Testing of Inversed Taper NACA 4412 Airfoil with Blade Made of Hybrid Empty Fruit Bunch Bio-composites." Journal of Mechanical Engineering 19, no. 2 (April 15, 2022): 79–96. http://dx.doi.org/10.24191/jmeche.v19i2.19766.

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The continuous increase in electrical energy requirements as well as the decreasing amount of fossil fuels has led to the rapid development of studiesin the field of renewable energy, one of which is wind energy. Wind energy with wind turbine was chosen due to its commercial acceptability such as low cost, ease of operation, and maintenance along relatively much less time from concept to operation. One of the important components in a turbine is the blade, the function of the blade is to trap the wind which is then forwarded to the generator. Therefore, this study aims to design, manufacture, and test blades for inversed taper NACA 4412, using a composite Empty Fruit Bunch (EFB) fiber combined with fiberglass. The wind turbine wasplaced above building at a height of ±15m and the data taken were in the form of wind speed, air temperature, voltage, and shaft rotation speed. Data collection was carried out using Arduino Uno, which was recorded on the data logger for 4 days and at the maximum speed, the power obtained was48.2 Watt. Furthermore, the highest coefficient performance value obtained was 0.17 with a tip speed ratio value of 0.89 at a wind speed of 3.27 m/s.

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Chen, Jiawei, Geoffrey Brown, and Adam Fudickar. "Simulation-based validation of activity logger data for animal behavior studies." Animal Biotelemetry 9, no. 1 (September 13, 2021). http://dx.doi.org/10.1186/s40317-021-00254-y.

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AbstractBio-loggers are widely used for studying the movement and behavior of animals. However, some sensors provide more data than is practical to store given experiment or bio-logger design constraints. One approach for overcoming this limitation is to utilize data collection strategies, such as non-continuous recording or data summarization that may record data more efficiently, but need to be validated for correctness. In this paper we address two fundamental questions—how can researchers determine suitable parameters and behaviors for bio-logger sensors, and how do they validate their choices? We present a methodology that uses software-based simulation of bio-loggers to validate various data collection strategies using recorded data and synchronized, annotated video. The use of simulation allows for fast and repeatable tests, which facilitates the validation of data collection methods as well as the configuration of bio-loggers in preparation for experiments. We demonstrate this methodology using accelerometer loggers for recording the activity of the small songbird Junco hyemalis hyemalis.

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Wijers, Matthew, Paul Trethowan, Andrew Markham, Byron du Preez, Simon Chamaillé-Jammes, Andrew Loveridge, and David Macdonald. "Listening to Lions: Animal-Borne Acoustic Sensors Improve Bio-logger Calibration and Behaviour Classification Performance." Frontiers in Ecology and Evolution 6 (October 29, 2018). http://dx.doi.org/10.3389/fevo.2018.00171.

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Hjelmstedt, Per, Henrik Sundh, Jeroen Brijs, Andreas Ekström, Kristina Snuttan Sundell, Charlotte Berg, Erik Sandblom, Jennifer Bowman, Daniel Morgenroth, and Albin Gräns. "Effects of prophylactic antibiotic-treatment on post-surgical recovery following intraperitoneal bio-logger implantation in rainbow trout." Scientific Reports 10, no. 1 (March 27, 2020). http://dx.doi.org/10.1038/s41598-020-62558-y.

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AbstractBio-logging devices can provide unique insights on the life of freely moving animals. However, implanting these devices often requires invasive surgery that causes stress and physiological side-effects. While certain medications in connection to surgeries have therapeutic capacity, others may have aversive effects. Here, we hypothesized that the commonly prescribed prophylactic treatment with enrofloxacin would increase the physiological recovery rate and reduce the presence of systemic inflammation following the intraperitoneal implantation of a heart rate bio-logger in rainbow trout (Oncorhynchus mykiss). To assess post-surgical recovery, heart rate was recorded for 21 days in trout with or without enrofloxacin treatment. Contrary to our hypothesis, treated trout exhibited a prolonged recovery time and elevated resting heart rates during the first week of post-surgical recovery compared to untreated trout. In addition, an upregulated mRNA expression of TNFα in treated trout indicate a possible inflammatory response 21 days post-surgery. Interestingly, the experience level of the surgeon was observed to have a long-lasting impact on heart rate. In conclusion, our study showed no favorable effects of enrofloxacin treatment. Our findings highlight the importance of adequate post-surgical recovery times and surgical training with regards to improving the welfare of experimental animals and reliability of research outcomes.

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Abecia, José-Alfonso, Silvia Luis, Francisco Canto, and Carlos Palacios. "Bio-loggers inserted in intravaginal sponges, or subcutaneously, as tools to measure body temperature." Animal Biotelemetry 10, no. 1 (December 14, 2022). http://dx.doi.org/10.1186/s40317-022-00312-z.

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AbstractThe body temperature of animals can be measured by thermistors, thermocouples, or radiotelemetry devices that are implanted surgically under the skin, although the suitability of subcutaneous temperature as an indicator of core temperature can be limited because of abnormal temperature readings, probably affected by ambient temperature and animal inactivity. This study compared the use of bio-loggers designed to monitor subcutaneous temperature (Tsub), with their use embedded in intravaginal sponges to measure vaginal temperature (Tvag). Three ewes were implanted with a subcutaneous temperature bio-logger that was configured to record Tsub every 30 min for a month. Ewes were given an intravaginal sponge for 12 days two days later. Inside the sponges were installed programmed bio-loggers that measured Tvag every 5 min. The ambient temperature (Tamb) and relative humidity were monitored using mini data-loggers. Mean Tsub was lower (P < 0.001) during the day (38.02 ± 0.02 °C) than at night (38.10 ± 0.02 °C), with maximum Tsub (38.57 °C) at 20:00 h and minimum temperature (37.36 °C) at 08:00 h; however, mean Tvag was higher (P < 0.001) during the day (38.71 ± 0.01 °C) than at night (38.62 ± 0.01 °C), with maximum Tsub (39.02 °C) at 20:55 h and minimum temperature (38.33 °C) occurred at 08:25 h. Mean Tsub (38.08 ± 0.02 °C) was lower (P < 0.0001) than was Tvag (38.65 ± 0.10 °C) in the daytime and at night (P < 0.001). Both temperatures had a 24-h rhythm (P < 0.0001), but differed (P < 0.001) in the mean midline estimating statistic of rhythm (MESOR) (Tvag: 38.67 ± 0.02 °C, Tsub: 38.09 ± 0.02 °C), amplitude (Tvag: 0.21° ± 0.01C; Tsub: 0.25 ± 0.01 °C), and acrophase (Tvag: 18:27 ± 0.38 h, Tsub: 20:48 ± 0.44 h). The coefficient of correlation between the two temperatures, measured simultaneously for 12 d was 0.644 (P < 0.01), and between Tamb and the two physiological temperatures, measured at the same time throughout the 12 d experiment, was 0.319 (P < 0.01) for Tsub and 0.287 (P < 0.01) for Tvag. The linear regression analysis of the 24 h circadian rhythm in Tsub and Tvag indicated a high coefficient of determination with Tvag (0.9255) and a lower coefficient of determination with Tsub (0.4292). In conclusion, the integration of a mini body temperature logger into a vaginal sponge, or their subcutaneous insertion, provided a continuous and accurate record of body temperature. Furthermore, the strong correlation between mean 24 h circadian Tvag and Tamb, demonstrated the usefulness of Tvag in biometeorological studies in sheep. As an alternative to employing these devices subcutaneously, they can also can be utilized as a biomarker of core body temperature inserted in vaginal sponges.

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Mayer, Martin, Marianne Lian, Boris Fuchs, Christian A. Robstad, Alina L. Evans, Kathryn L. Perrin, Eva M. Greunz, Timothy G. Laske, Jon M. Arnemo, and Frank Rosell. "Retention and loss of PIT tags and surgically implanted devices in the Eurasian beaver." BMC Veterinary Research 18, no. 1 (June 10, 2022). http://dx.doi.org/10.1186/s12917-022-03333-1.

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Abstract Background Passive integrated transponder devices (PIT tags) are a valuable tool for individual identification of animals. Similarly, the surgical implantation of transmitters and bio-loggers can provide useful data on animal location, physiology and behavior. However, to avoid unnecessary recapture and related stress of study animals, PIT tags and bio-loggers should function reliably for long periods of time. Here, we evaluated the retention of PIT tags, and of very high frequency (VHF) transmitters and bio-loggers that were either implanted subcutaneously or into the peritoneal cavity of Eurasian beavers (Castor fiber). Results Over a 21-year period, we implanted PIT tags in 456 individuals and failed to detect a PIT tag at recapture in 30 cases, consisting of 26 individuals (6% of individuals). In all instances, we were still able to identify the individual due to the presence of unique ear tag numbers and tail scars. Moreover, we implanted 6 VHFs, 36 body temperature loggers and 21 heart rate loggers in 28 individuals, and experienced frequent loss of temperature loggers (at least 6 of 23 recaptured beavers) and heart rate loggers (10 of 18 recaptured beavers). No VHFs were lost in 2 recaptured beavers. Conclusions Possible causes for PIT tag loss (or non-detection) were incorrect implantation, migration of the tag within the body, a foreign body reaction leading to ejection, or malfunctioning of the tag. We speculate that logger loss was related to a foreign body reaction, and that loggers were either rejected through the incision wound or, in the case of temperature loggers, possibly adhered and encapsulated to intestines, and then engulfed by the gastro-intestinal tract and ejected. We discuss animal welfare implications and give recommendations for future studies implanting bio-loggers into wildlife.

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Palacios, Carlos, Javier Plaza, and José-Alfonso Abecia. "A High Cattle-Grazing Density Alters Circadian Rhythmicity of Temperature, Heart Rate, and Activity as Measured by Implantable Bio-Loggers." Frontiers in Physiology 12 (August 13, 2021). http://dx.doi.org/10.3389/fphys.2021.707222.

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Six cows managed under extensive grazing conditions were used to study the effect of moving the animals to a higher grazing density on the circadian rhythms of temperature (T), heart rate (HR), and activity (ACT), which were recorded by implantable bio-loggers. Cows were maintained at a density of 1.5 livestock units per hectare (LSUs/ha; low density, LD) until they were moved to a grazing area at 128 LSUs/ha (high density, HD). Animals were implanted subcutaneously with a T, HR, and ACT bio-logger, which was programmed to record data at 5-min intervals. For each animal, cosinor rhythmometry (the study of circadian rhythms by fitting a sine wave to a time series) was applied to the data recorded over 5 days in LD and HD. Mean Midline Estimating Statistic of Rhythm (MESOR; the average value around which the variable oscillates), amplitude (difference between the peak and the mean value of a wave), and acrophase (timing of peak activity) were calculated and evaluated statistically. Differences between mean day and nighttime values, and mean LD and HD values were calculated. Cows presented cosinor curves that fit a 24-h rhythm (p < 0.001) in T, HR, and ACT at both densities. MESOR (T: 37.98 vs. 38.02°C; HR: 69.12 vs. 65.91 bpm; ACT: 49.39 vs. 40.41 mg, for LD and HD, respectively) and amplitude (T: 0.28 vs. 0.28°C; HR: 4.12 vs. 3.14 bpm; ACT: 18.14 vs. 11.28 mg, respectively) did not differ significantly between the two densities; however, significant (p < 0.05) differences between densities occurred in the acrophase of the three variables; specifically, the T acrophase was 2 h later at HD (22:45 h) than LD (20:45 h), and HR (LD: 19:51; HD: 16:49 h) and ACT acrophases 3 and 2 h earlier at HD than LD (LD: 14:47; HD: 12:49 h), respectively. T and ACT differed significantly (p < 0.01) between daytime (mean ± SE; 37.92 ± 0.19°C, 40.39 ± 4.74 mg) and nighttime (38.14 ± 0.17°C, 29.93 ± 5.66 mg). In conclusion, our study suggests that a high animal grazing density might exacerbate the social competence for valuable resources for animals, resulting in shifting the circadian rhythmicity of temperature, heart rate, and activity of the cows, advancing or delaying their acrophases.

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Journal articles on the topic 'Bio-logger'

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