Water sample collected from the river San Pedro, Meoqui, Chihuahua, at the indicated location.
The sample was collected on January 22th at 07:50. The images were collected on January 24th.
Water sample collected from the river San Pedro, Meoqui, Chihuahua, at the indicated location.
The sample was collected on January 25th at 14:41 and images were acquired the next day.
Water sample collected from the river San Pedro, Meoqui, Chihuahua, at the indicated location.
The sample was collected on January 25th at 14:41 and images were acquired the next day.
Water sample collected from the river San Pedro, Meoqui, Chihuahua, at the indicated location.
This sample was collected on January 16th at 10:17 and images were acquired on January 18th.
A water sample was taken from the shore of the Srednerogatsky Pond. The sample had been in room temperature storage until assayed.
From Sample 6. Captured via 10um plankton net at the dock at Stanley lake.
http://rotifera.hausdernatur.at/Species/Index/1382
Mytilina macrocera
Water sample (freshwater) was taken on 09/09/2022 using a 10µm dip net to enrich for microorganisms.
A pregnant rotifer! I got this sample from the bottom of a lake near the shore. After four days I put the rotifer under the microscope. The stomach indicates that it belongs to the family Philodinidae. Because it has four toes, is viviparous, has long and distinctive spurs and did not seem that malleable, I come to the conclusion that this individual belongs to the genus Dissotrocha. The problem with the genus is that the integument would have more detail like epidermal pores but this is not visible in this individual. This might be due to the lack of image contrast. Despite that I uploaded one image where I tried to focus on the integument. As I could not make out any humps or spikes on its trunk and the spurs are not that long I am sure that this is D. macrostyla.
Mag. 400x
Posterior margin shows 4 spines. The dorsal surface shows at least 4 spines. Looks similar to Macrochaetus esthonicus, though this specimen may lack an intermediate group of spines located between the anterior-most row and the posterior marginal spines. (Compare to drawing found here http://rotifera.hausdernatur.at/Species/Index/3175.)