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Underwater video and still-image dataset of fishes and other aquatic animals in Lake Biwa, Japan, observed via carp-mounted video loggers.

Dataset homepage

Citation

Yoshida M (2022). Underwater video and still-image dataset of fishes and other aquatic animals in Lake Biwa, Japan, observed via carp-mounted video loggers.. Version 1.14. National Institute of Genetics, ROIS. Sampling event dataset https://doi.org/10.15468/7ev5a5 accessed via GBIF.org on 2023-02-08.

Description

This is the first large dataset of underwater videos from which species occurrence and behavioral records of aquatic organisms were identified in Lake Biwa, the largest lake in Japan. We compiled 109 videos and 122 still-images of fishes, diving birds and shrimps. The images were cropped from videos taken underwater with animal-borne video cameras which were mounted on the backs of common carp. Our dataset includes records of 10 species, 4 genera, 2 families and 1 infraorder which includes mostly fish, several birds, and a crustacean. This dataset is published as a data paper in Ecological Research (see https://doi.org/10.1111/1440-1703.12158).

Sampling Description

Study Extent

The study area was located in the northern part of the North Basin of Lake Biwa, Japan, and was enclosed within the following coordinates: 35.287–35.454 N, 136.018–136.225 E. This study was conducted from Oct 2016 to Dec 2018. Samplings were made through five field experiments as follows: (1) an experiment in Oct 2016, (2) another experiment in Nov 2017, and (3) three experiments from Nov to Dec 2018.

Sampling

Samplings were made through five field experiments using nine fish as follows: (1) an experiment using one fish in Oct 2016, (2) another experiment using one fish in Nov 2017, and (3) three experiments using six fish from Nov to Dec 2018. Animal-borne video loggers (DVL200L; 27 mm width, 116 mm length, 10 mm height and 57 g in air, or DVL400M130; 21 mm width, 68 mm length, 22 mm height and 47 g in air, Little Leonardo, Tokyo, Japan) were used to collect video footage underwater. The logger was molded into a float with an accelerometer (ORI400-D3GT; 12 mm diameter, 45 mm length and 9 g in air, or W190-PD3GT; 21 mm diameter, 116 mm length and 60 g in air, Little Leonardo), a VHF transmitter (MM-130B; 16 mm diameter, 60 mm length and 20 g in air, Advanced Telemetry Systems, MN) and a time-release system (RT4; 16 mm diameter, 25 mm length and 16 g in air, Little Leonardo), and was then mounted on the back of each carp using a plastic cable tie. The float was shaped to reduce drag and it provided just enough buoyancy to return the instrument package to the surface upon release. All carp were released near the site at which they were captured. The video loggers were set to start recording in the morning (6:00 or 7:00 JST) three (or five) days after the fish’s release. The recording duration was 6 hours for DVL200L and 11–12 hours for DVL400M130. On the fourth (or sixth) day, the float detached from the fish, floated to the water surface, and was retrieved.

Quality Control

Scientific names followed the GBIF backbone taxonomy (https://www/gbif.org/species/) and the Union of Japanese Societies for Systematic Biology (2003). To identify avian species in the study area, daily occurrence reports of birds, provided by Kohoku Wild-Birds Center, (Bird News; http://www.biwa.ne.jp/~nio/newsindex.html) were used as a reference.

Method steps

  1. The video data was formatted in MP4 (3 or 6 Mbps, 30 fps) format. A total of 64 h of video was taken. Images that contained any aquatic animals were cropped from obtained video footage using iMovie software (ver.10.1.9, Apple, CA). Color values of the images were adjusted using the “Automatic Color Adjustment” tool in the software.
  2. All species were identified by the authors or by professional experts. If we could not obtain sufficient information to identify a species from the videos (e.g., a blurring due to fish movements), we classified the organism to a higher taxonomic level (e.g., order, class, and family) that could be specified with certainty.

Taxonomic Coverages

This dataset includes occurrence records of 11 fish species, three avian species and a crustacean.
  1. Cyprinus
    rank: genus
  2. Carassius
    rank: genus
  3. Hemibarbus
    rank: genus
  4. Pseudogobio
    rank: genus
  5. Rhinogobius
    rank: genus
  6. Micropterus
    rank: genus
  7. Silurus
    rank: genus
  8. Gymnogobius
    rank: genus
  9. Lepomis
    rank: genus
  10. Gobiidae
    rank: family
  11. Aves
    rank: class
  12. Caridea
    rank: infraorder

Geographic Coverages

Lake Biwa in Shiga, Japan

Bibliographic Citations

  1. Union of Japanese Societies for Systematic Biology (2003) Japanese Biota Species Number Survey, 1st Edition. http://ujssb.org/biospnum/search.php (accessed on the 8th of January 2020). -

Contacts

Makoto Yoshida
originator
position: Research Associate
National Institute for Environmental Studies
5-34 Yanagasaki
Otsu
522-0022
Shiga
JP
Telephone: +81 (77) 599 4848
email: yoshida.makoto@nies.go.jp
homepage: http://www.nies.go.jp/researchers-e/301244.html
Makoto Yoshida
metadata author
position: Research Associate
National Institute for Environmental Studies
5-34 Yanagasaki
Otsu
522-0022
Shiga
JP
Telephone: +81 (77) 599 4848
email: yoshida.makoto@nies.go.jp
homepage: http://www.nies.go.jp/researchers-e/301244.html
Makoto Yoshida
author
position: Research Associate
National Institute for Environmental Studies
5-34 Yanagasaki
Otsu
522-0022
Shiga
JP
Telephone: +81 (77) 599 4848
email: yoshida.makoto@nies.go.jp
homepage: http://www.nies.go.jp/researchers-e/301244.html
Kohji Mabuchi
author
position: Senior Researcher
National Institute for Environmental Studies
5-34 Yanagasaki
Otsu
522-0022
Shiga
JP
Telephone: +81 (77) 526 8565
email: mabuchi.koji@nies.go.jp
homepage: http://www.nies.go.jp/researchers-e/301059.html
Katsufumi Sato
author
position: Professor
Atmosphere and Ocean Research Institute, the University of Tokyo
5-1-5 Kashiwanoha
Kashiwa
277-8564
Chiba
JP
Telephone: +81 (4) 7136 6220
email: katsu@aori.u-tokyo.ac.jp
homepage: http://www.fishecol.aori.u-tokyo.ac.jp/sato/
Kumiko Totsu
author
position: Specialist (Database engineer)
National Institute for Environmental Studies
16-2 Onogawa
Tsukuba
305-8506
Ibaraki
JP
email: totsu.kumiko@nies.go.jp
Makoto Yoshida
administrative point of contact
position: Research Associate
National Institute for Environmental Studies
5-34 Yanagasaki
Otsu
522-0022
Shiga
JP
Telephone: +81 (77) 599 4848
email: yoshida.makoto@nies.go.jp
homepage: http://www.nies.go.jp/researchers-e/301244.html
Biodiversity Division
administrative point of contact
National Institute for Environmental Studies
email: biodiv.data@nies.go.jp
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