Chironomus luridus Srenzke

Michailova, Paraskeva, 2024, Markers in the polytene chromosomes of freshwater Chironomus Meigen (Diptera, Chironomidae) species, Zootaxa 5453 (4), pp. 511-537 : 529

Chironomus luridus Srenzke

The chromosome set is 2n = 8. Chromosome AE is submetacentric, chromosomes CD and BF are metacentric, chromosome G is telocentric. Near to the centromere region of chromosome G there is puff. Two BRs are close to each other. In the middle of the chromosome G there is a constriction surrounded by thick dark bands, a marker of the species ( Fig. 17 ). The “basic” patterns in A2.2 are in inverted state in comparison with the standard species, C. piger . Twenty-two larvae were analyzed .

Collection sites: Sofia: South Park ; Varna, region St. Konstantin and Elena .

Figures

FIGURE17.PolytenechromosomesofChironomusluridus.Thenumbersonthechromosomearmsindicatethe“basic”sequences. The large arrows show the localization of the centromere region. The small arrow on chromosome G indicates the marker sequences required for species identification. BR—Balbiani Ring, NOR—Nuclear Organizer Region.A, B, C, D, E, F, G—arms of the chromosomes. Scale bar, 10µm.