sanya-copepoda's Identifications

Video: https://youtu.be/v87VFKWFios

Photos are snapshots of the same individual in the video

Size : appox. 1.3 mm in length

Site of collection: Pavilion, Takamori Ryokuchi (a freshwater habitat), Sendai, Japan

Date of collection: October 16th 2021

Weather: Rainy

Water temp.: 18.1°C

pH 6.3

Date of observation: October 31st 2021 (the collected sample in a plastic container was left near a window out of direct sunlight at room temperature until observation)

Bright field observation using a Wraymer microscope (model BX-3500TL, Osaka, Japan) equipped with a Floyd-2 HDMI ethernet digital camera (Wraymer, Osaka, Japan). The accuracy of the scale bar was confirmed by using a stage micrometer glass slide (1 div. = 10 µm; Wraymer, Osaka, Japan) at each magnification.

Video: https://youtu.be/VgwdoURFbTY

Photos are snapshots of the same individual in the video

Size: approx. 750 µm in length

Site of collection: Pavilion, Katsurashima Ryokuchi north pond (a freshwater habitat), Sendai, Japan

Date of collection: December 18th 2021

Weather: Snow

Water temp.: 6.6°C

pH 6.5

Date of observation:
December 18th 2021

Bright field observation using a Wraymer microscope (model BX-3500TL, Osaka, Japan) equipped with a Floyd-2 HDMI ethernet digital camera (Wraymer, Osaka, Japan). The accuracy of the scale bar was confirmed by using a stage micrometer glass slide (1 div. = 10 µm; Wraymer, Osaka, Japan) at each magnification.

Video: https://youtu.be/68TL8mhof2o

Photos #1–#3 depict snapshots of the same individual featured in the video. However, Photo #4 shows an individual discovered within the same observational frame but may differ from the one seen in the video.

Size: see scale bar

Site of collection: Pavilion, Takamori Higashi Park (a freshwater habitat), Sendai, Japan

Date of collection: Aug. 8th 2021

Weather: Rainy

Water temp.: 29.0°C

pH 6.6

Date of observation: August 17th 2021 (the collected sample in a plastic container was left near a window out of direct sunlight at room temperature until observation).

Bright field observation using a Wraymer microscope (model BX-3500TL, Osaka, Japan) equipped with a Floyd-2 HDMI ethernet digital camera (Wraymer, Osaka, Japan). The accuracy of the scale bar was confirmed by using a stage micrometer glass slide (1 div. = 10 µm; Wraymer, Osaka, Japan) at each magnification.