Bryocamptus zschokkei (Schmeil, 1893)

Bozkurt, Ahmet, Received, Mustafa Bozçab, Online, Published & Version, Final, 2019, Investigation of zooplankton fauna in water wells of Yayladağı District (Hatay, Turkey), Turkish Journal of Zoology 43 (4), pp. 356-366 : 362

Bryocamptus zschokkei , Canthocamptus microstaphylinus , and Nitocra hibernica from Copepoda were found in one well each ( Table 4).

The most species (15 species) from Rotifera were found in Well 1, followed by Well 5 with 11 species and Well 4 with 10 species. The most species from Cladocera were found in Well 14 (6 species), followed by Well 8 with 4 species and Wells 1, 4, 5, 6, 7, and 11 with 3 species each. The most species from Copepoda were found in Well 14 (6 species), followed by 5 species in Wells 4 and 13, and 4 species in Wells 1 and 9 ( Table 4).

In terms of total zooplankton species, it was determined that Well 1 was the richest with 22 species, followed by Well 14 with 19 species and Well 4 with 18 species ( Table 4). While the wells were rich in the variety of species of rotifers and copepods, they were very poor in terms of zooplankton.

Seven of 30 species from Rotifera, 3 of 9 species from Cladocera , and 6 of 12 species from Copepoda were found to be abundant in different seasons and wells. In spring, Bosmina longirostris and Pleuroxus aduncus from Cladocera in Well 4 and Tropocyclops prasinus and Eudiaptomus drieschi from Copepoda in Wells 7 and 4 were abundant (++), whereas Synchaeta stylata from Rotifera in Well 1 was very abundant (+++) ( Table 5).

In summer, it was determined that Synchaeta stylata from Rotifera in Well 3, Ceriodaphnia reticulata from Cladocera in Well 5, Tropocyclops pracinus in Wells 3 and 10, and Eudiaptomus drieschi from Copepoda in Well 1 were very abundant. In the same season, the rotifer Trichocerca similis in Wells 8 and 9; cladocerans Ceriodaphnia reticulata in Well 11, Diacyclops bicuspidatus in Well 8, and Diacyclops languidus in Well 6; and copepod Tropocyclops pracinus in Well 7 were found to be abundant ( Table 5).

In autumn, Keratella quadrata from Rotifera was very abundant (+++) in Well 1, but K. quadrata and Lecane hamata were abundant (++) in Wells 14 and 5, respectively. From Copepoda, Eudiaptomus drieschi in Well 14 and Tropocyclops prasinus in Well 1 were abundant, whereas E. drieschi in Well 1 was quite abundant ( Table 5).

In winter, from Rotifera Lecane pumila (Well 4), Lecane tenuiseta (Well 8), Testudinella patina (Well l7), and Attheyella crassa and Canthocamptus microstaphylinus (Well 14) were abundant, while Bosmina longirostris and Eudiaptomus drieschi in Well 4 were quite abundant ( Table 5).

New record Lecane pumila : relatively large, wider than long, soft lorica and short, curved toes bearing pseudoclaws distinguish the species from all other soft-bodied Lecane . Lorica flexible, although form constant; lateral sulci absent; toes extremely short; claw points curved backwards. Total length (7 specimens) 105–150 µm; toes 4–6 µm.