Branchipodopsis affinis Sars, 1901

Kangarloei, Behrooz Atashbar & Roohi, Maryam, 2021, First record of Branchipodopsis affinis Sars, 1901 (Crustacea: Anostraca) in Iran (Bazargan, West Azerbaijan): Ecology, Morphology and Genetics, Zootaxa 4908 (4), pp. 558-570 : 563

Branchipodopsis affinis Sars, 1901

Mongolobranchipus talkohryncewiczi Dybowski, 1928

Branchipodopsis terpogossiani Smirnov, 1936

Branchipodopsis acanthopenes Malhortra & Duda, 1970

Branchinecta acanthopenes Malhortra & Duda, 1970

Short description. Male. Clypeus: basal process broad and apically bilobed; outer lobe rounded and smooth or with a small acute projection on inner side which is not seen in some cases; inner lobe more conical and sharp-pointed; lamelliform process small and rounded; apical joint strongly curved inwards, apically blunt and broad ( Fig. 3 A 1 , A 2 ). Cercopods: outer margins strongly convex with setae along entire length; small spine like setae on inner margins along entire length ( Fig. 3B ). Abdominal spines: pair of small spines on ventral surface of last abdominal segment ( Fig. 3C ). Gonopods: basal part with large rounded projection on median margin and small, but distinct, peg-like projection distally on lateral margin ( Fig. 3C ). Female. Antenna: proximal four fifths cylindrical; distal fifth narrowing to tapering point ( Fig. 4 A ). Genital segments inconspicuously swollen and brood pouch oval shaped ( Fig. 4 B ). Cercopods: margins straight with long plumose setae along outer margins and distal two thirds of inner margins; proximal thirds inner margins with short plumose setae ( Fig. 4C ).

Evolutionary relationships of taxa.

The results indicated that the Neighbor-Joining method divided Branchipodopsis affinis and all other species of the genus to two main clades, although with lower bootstrap values ( Fig. 5 ). Based on these results the B. affinis and Artemia urmiana groups are comprised of two sub-clades, in which the B. affinis represents % 80 separation clade from the Artemia urmiana groups.

Figures

FIGURE 1. Study area map showing the location of temporary pools.

FIGURE 2. Proportional abundance (%) of the main zooplankton groups in temporary pools. The size of pools increases from left to right. For the codes see table 1.

FIGURE 3. Male of Branchipodopsis affinis. A1, dorsal view of clypeus, arrow indicates small projection on apex of outer lobe of basal process. A2, variability of the basal antennal processes in adults. B, cercopods, arrow indicates spines on ventral surface of last abdominal segment. C, ventral view of gonopods, arrow indicates peg-like projection distally on lateral margin. Scale bars: 200μm.

FIGURE 4. Female of Branchipodopsis affinis. A, dorsal view of head. B, lateral view of genital segments. C, cercopods. Scale bars: 200μm.

FIGURE 5. Neighbor-Joining tree based on the mitochondrial data set of Branchipodopsis species. Artemia urmiana. is used as outgroup. The numbers at the nodes indicate levels of bootstrap support (%).