I'm new to WildLabs, I guess I'm writing in a relevant area to get addressed with my query. I'm doing my doctoral research at Bharathiar University currently. I am planning to do some biologging study on freshwater crabs to answer my research objective. Here, I'm seeking for information upon
1) Which could be the best Biologger to obtain data on temperature, Heart beat and activity using IOT devices for freshwater crabs. I need loggers that can be fitted and left in the wild or lab condition for a while, so that I can later retrieve the data.
I find it difficult given that it's hard to get one in India. I could see many tiny loggers of lower prices but I don't know how efficient those are, so could anyone suggest one good model that would work great ?
Thanks in advance
A Abinesh
18 November 2023 1:54am
Hi @Abinesh
I just did a quick literature search and couldn't find a great deal, which I expect is also the case for you. I did find this paper:
(PDF) An improved noninvasive method for measuring heartbeat of intertidal animals
PDF | Since its emergence two decades ago, the use of infrared technology for noninvasively measuring the heartbeat rates of invertebrates has provided... | Find, read and cite all the research you need on ResearchGate
ResearchGate
which might offer some ideas.
And this one too:
Temperature-related heart rate in water and air and a comparison to other temperature-related measures of performance in the fiddler crab Leptuca pugilator (Bosc 1802)
Performance in poikilotherms is known to be sensitive to temperature, often with a low-sloping increase with temperature to a peak, and a steep declin…
Details on the build are a little scant however, so perhaps you could write to the authors for some instructions? Also found this, and could be another person to contact:
How to listen to a crab’s heart, and other super useful skills
By Emily Dombrowski, College of Charleston The Approach: In my Previous Post, I discussed how horseshoe crabs play a vital role in human medicine and how the human harvesting industry affects crab …
On the temperature side of logging, and depending on weight restrictions, perhaps something like this:
SL52T / SL52T-A Miniature Temperature data logger (-40°C to +85°C with up to ±0.12°C Accuracy)
The SL52T is a self contained, multiple use, miniature temperature data logger with the ability to record up to 8,000 temperatures over the temperature range of -40°C to +85°C with an accuracy of ±0.5°C. The SL52T-A is supplied with a UKAS 17025 traceable calibration certificate and an improved accuracy of ±0.15°C over the range -20°C to +25°C.Calibration tolerances up to ±0.12°C are available up on request. Starter kits are available with either two or five SL52T or SL52T-A temperature data loggers, USB interface cable and the TempIT-PRO software. The SL52T is ideal for use when sample rates faster than 5 minutes are required. For applications where sample rates of 5 minutes or longer are required, consider using the SL56T / SL56T-A
Signatrol Ltd
There are similarly self-contained smaller(?) temperature loggers around but at a higher price:
Mini temperature data logger | Easily fit into the smallest spaces!
The MadgeTech MicroTemp is a mini temperature data logger fits inside bottles and cans, fully submersible up to 230 ft. (70 m).
ph meter, ph tester, thermocouple, light & humidity meter supplier
Sorry I couldn't be of more help, but if I find anything else, I'll post it here.
All the best,
Rob
1 December 2023 8:54pm
Star-Oddi in Iceland comes to mind, but I'm not 100% sure.
Rob Appleby
Wild Spy