Microcomputer-Based Measuring Device for Collecting Biological Data

Armstrong, M. C.; Nagtegaal, D. A.; Boutillier, James A.

doi:10.1577/1548-8640(1989)051<0047:mbmdfc>2.3.co;2

Cited by 7 publications

(8 citation statements)

References 3 publications

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“…The skipping of the handwriting phase of obtained data due to simultaneous automatic logging by computer eliminates possible errors and leads to improvement of time efficiency. Advantages of computer-assisted measurements were also reported by several other authors (2,3,23,24). The obvious disadvantage of morphological measurements made from digital pictures is 2-dimensionality.…”

Section: Discussionmentioning

confidence: 76%

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Comparison of manual measurements and computer-assisted image analysis in fish morphometry

Petrtýl¹,

Kalous²,

Memiş³

2014

Turk J Vet Anim Sci

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Several authors have provided biostratigraphic age constraints for those Miocene marine deposits. Bassant et al. (2005) identified the NN4 calcareous nannofossil biozone (late Burdigalian-early Langhian; Martini & Müller 1986) in the lower part of the marine succession on the eastern side of the Mut Basin. According to the same authors, the upper part of the same marine succession should be part of the NN5 biozone (Langhian). In the Mut-Ermenek Basin, Tanar and Gökçen (1990) identified marine deposits as young as Serravallian. Similar ages for the Miocene marine succession cropping out north of Ermenek were provided by Janson et al. (2010). These authors identified 3 chronostratigraphic units within the mainly carbonate marine sediments of the Ermenek area. The first chronostratigraphic unit, which includes the lowermost part of the marine succession, is poorly dated as the upper part of the NN4 calcareous nannofossil biozone (latest Burdigalian-early Langhian). The second chronostratigraphic unit, which includes

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Section: Discussionmentioning

confidence: 76%

“…The raw data are mostly obtained by caliper, measuring board, graph paper, ruler, etc. (1)(2)(3)(4). New instruments were also implemented in ichthyological and aquaculture research with the intention of making measurements easier and more accurate.…”

Section: Introductionmentioning

confidence: 99%

Comparison of manual measurements and computer-assisted image analysis in fish morphometry

Petrtýl¹,

Kalous²,

Memiş³

2014

Turk J Vet Anim Sci

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“…Smaller, more research oriented projects should generally be slower to incorporate any new methods of data collection involving upfront costs in materials and labor, such as electronic methods. Devices for electronically measuring fish were developed in the mid-1980s (Armstrong et al, 1989;Chaput et al, 1992;Sigler, 1994), and these are used extensively by NMFS on large-scale surveys in the northern Pacific Ocean as well as on two ADF&G surveys. Although these methods appear to provide a significant time savings (Sigler, 1994), most data collection by state agencies on the west coast of the United States still occurs via written or indirect electronic methods where an observer relays data to a recorder for entry into an electronic device in the field.…”

Section: Introductionmentioning

confidence: 99%

A comparison of obtaining field data using electronic and written methods

Tamelen

2004

Fisheries Research

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“…Other electronic measuring devices for recording fish lengths have transducers (McAllister and Planck 1981), potentiometers (Sprules et al 1981;Armstrong et al 1989), or magnets and "Halleffect switches" (Armstrong et al 1986). Electronic data recording systems, including the bar code system, have several advantages over manual methods (McAllister and Planck 1981;Armstrong et al 1986).…”

Section: Comparison With Other Systemsmentioning

confidence: 99%

An Electronic Measuring Board with Bar Codes

Sigler¹

1994

Transactions of the American Fisheries Society

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A measuring board was devised to electronically record fish lengths during surveys at sea. The board is marked in 1-cm increments labeled with bar codes. A fish is placed on the board, and its length is recorded by stroking the bar code at the tip of the tail of the fish with a penlike bar code reader. Large numbers of fish lengths and related data can be recorded quickly and accurately with the board. Electronic data recording eliminates keying and data checking and the data are recorded in a form directly accessible to computers. The electronic measuring board with bar codes is well suited for field use because it is waterproof and has no mechanical parts that can be fouled by fish blood and slime or corroded by seawater. The system is adaptable to recording other categorical data besides length.Fishery field studies frequently require the collection of large amounts of length data on individual fish. For example, large numbers offish are measured annually (about 140,000 in 1991) during longline surveys for sablefish Anoplopomafimbria in the Gulf of Alaska (Sigler and Zenger 1989;Zenger and Sigler 1992). During these surveys, fish length has been recorded by punching pin holes in ruled strips of plasticized paper. Length records were then manually tallied and keyed into a computer aboard the survey vessel. This was tedious and time consuming, and recording and keying errors occurred. To avoid these problems, I devised a system to record lengths electronically with a measuring board labeled with bar codes. Hardware and SoftwareThe data-recording system consists of a measuring board labeled with bar codes, a penlike bar code reader, and an electronic data logger ( Figure 1). A personal computer also is used to periodically download data from the data logger, but it is not used for data recording.The measuring board is 120 cm long. Each 1 -cm increment of the measuring board is labeled with two bar codes, one for males and the other for females ( Figure 1). Thus, only one stroke of the bar code reader pen is needed to record the sex and length of a fish. Bar codes for species, water depth stratum of capture, and control of the data logger's cursor are in the upper area of the measuring board. The measuring board is printed on 1.78-mm-thick opaque Mylar laminated with 1.52mm-thick clear Mylar to protect the printing.The bar code reader pen is connected with a wire to a standard 25-pin RS-232 port in the data logger, which stores the recorded data. The tip of the reader pen is removable and inexpensive (US$20), and it can be replaced if damaged.The data logger has 128 kilobytes of memory, a sealed membrane keypad, a small liquid crystal display (LCD) screen, and data entry software. The LCD screen displays an electronic data form constructed with the data entry software. Data appear in the form as they are recorded. The header line of the form consists of columns for date and station number; a data line consists of columns for depth stratum and species and a third column for sex and length. The cursor in the LCD sc...

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Microcomputer-Based Measuring Device for Collecting Biological Data

Cited by 7 publications

References 3 publications

Comparison of manual measurements and computer-assisted image analysis in fish morphometry

Comparison of manual measurements and computer-assisted image analysis in fish morphometry

A comparison of obtaining field data using electronic and written methods

An Electronic Measuring Board with Bar Codes

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