Ostreopsis labens
olabens2.jpg

Fig. 2. SEM. Hypothecal view. Cell surface smooth with scattered pores (arrows).

olabens3.jpg

Fig. 3. SEM. Cells compressed anterio-posteriorly.

olabens4.jpg

Fig. 4. SEM. Thecal surface smooth; evenly spaced round trichocyst pores with smooth edges.

olabens5.jpg

Fig. 5. SEM. Large Po, long and narrow, associated with plate 2'. Po with raised edge and narrow, curved slit-like apical pore. Po=apical pore plate.

olabens6.jpg

Fig. 6. SEM. Cingulum deep, lipped and narrow (arrowheads).

olabens7.jpg

Fig. 7. SEM. Cingulum inner surface lined with 2 rows of small pores (arrowheads).

olabens8.jpg

Fig. 8. SEM. Ventral surface of cingulum revealing Vo, Vp and Rp (large arrow). Vo elongate and protuberant situated between plates 1'' and 1''''. Rp=ridged plate; Vo=ventral pore; Vp=ventral plate.

olabens9.jpg

Fig. 9. SEM. Vo situated on Vp adjacent to Rp (arrows).

olaben12.jpg

Fig. 10. SEM. Sulcus small and recessed, hidden under plate 1''''. Rp (asterisk) appears as an extension of sulcus. Plate 1'''' with a curved list (arrowhead).

olaben13.jpg

Fig. 11. SEM. Right ventral view. Sulcus unusual, recessed, and adjacent to 1''''. Rp: a protuberant curved plate (arrowheads). Position of flagellar pore area (arrow).

olaben14.jpg

Fig. 12. LM.

olaben15.jpg

Fig. 13. LM.

olaben16.jpg

Fig. 14. LM.

olaben17.jpg

Fig. 15. LM. Nucleus large, spherical and posteriorly.

olaben18.jpg

Fig. 16. LM. Engulfed prey (arrow).

%LABEL% (%SOURCE%)