PMID- 32879706 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20200928 IS - 1993-0771 (Print) IS - 1993-078X (Electronic) IS - 1993-0771 (Linking) VI - 14 IP - 3 DP - 2020 TI - Comparative FISH-mapping of TTAGG telomeric sequences to the chromosomes of leafcutter ants (Formicidae, Myrmicinae): is the insect canonical sequence conserved? PG - 369-385 LID - 10.3897/CompCytogen.v14i3.52726 [doi] AB - Telomeric sequences are conserved across species. The most common sequence reported among insects is (TTAGG)(n), but its universal occurrence is not a consensus because other canonical motifs have been reported. In the present study, we used fluorescence in situ hybridization (FISH) using telomeric probes with (TTAGG)(6) repeats to describe the telomere composition of leafcutter ants. We performed the molecular cytogenetic characterization of six Acromyrmex Mayr, 1865 and one Atta Fabricius, 1804 species (Acromyrmex ambiguus (Emery, 1888), Ac. crassispinus (Forel, 1909), Ac. lundii (Guerin-Meneville, 1838), Ac. nigrosetosus (Forel, 1908), Ac. rugosus (Smith, 1858), Ac. subterraneus subterraneus (Forel, 1893), and Atta sexdens (Linnaeus, 1758)) and described it using a karyomorphometric approach on their chromosomes. The diploid chromosome number 2n = 38 was found in all Acromyrmex species, and the karyotypic formulas were as follows: Ac. ambiguus 2K = 14M + 12SM + 8ST + 4A, Ac. crassispinus 2K = 12M + 20SM + 4ST + 2A, Ac. lundii 2K = 10M + 14SM + 10ST + 4A, Ac. nigrosetosus 2K = 12M + 14SM + 10ST + 2A, and Ac. subterraneus subterraneus 2K = 14M + 18SM + 4ST + 2A. The exact karyotypic formula was not established for Ac. rugosus. FISH analyses revealed the telomeric regions in all the chromosomes of the species studied in the present work were marked by the (TTAGG)(6) sequence. These results reinforce the premise that Formicidae presents high homology between their genera for the presence of the canonical sequence (TTAGG)(n). CI - Carini Picardi Moraes de Castro, Danon Clemes Cardoso, Ricardo Micolino, Maykon Passos Cristiano. FAU - de Castro, Carini Picardi Morais AU - de Castro CPM AD - Departamento de Biodiversidade, Evolucao e Meio Ambiente, Universidade Federal de Ouro Preto (UFOP), MG, Brazil Universidade Federal de Ouro Preto Ouro Preto Brazil. AD - Departament de Genetica, Facultat de Biologia, Universitat de Barcelona (UB), Barcelona, Spain Universidade Barcelona Barcelona Spain. FAU - Cardoso, Danon Clemes AU - Cardoso DC AUID- ORCID: 0000-0002-2811-2536 AD - Departamento de Biodiversidade, Evolucao e Meio Ambiente, Universidade Federal de Ouro Preto (UFOP), MG, Brazil Universidade Federal de Ouro Preto Ouro Preto Brazil. FAU - Micolino, Ricardo AU - Micolino R AD - Programa de Pos-graduacao em Genetica, Universidade Federal do Parana (UFPR), Curitiba, PR, Brazil Universidade Federal do Parana Curitiba Brazil. FAU - Cristiano, Maykon Passos AU - Cristiano MP AUID- ORCID: 0000-0001-7850-9155 AD - Departamento de Biodiversidade, Evolucao e Meio Ambiente, Universidade Federal de Ouro Preto (UFOP), MG, Brazil Universidade Federal de Ouro Preto Ouro Preto Brazil. LA - eng PT - Journal Article DEP - 20200814 PL - Bulgaria TA - Comp Cytogenet JT - Comparative cytogenetics JID - 101503807 PMC - PMC7442751 OTO - NOTNLM OT - FISH OT - evolution OT - insects OT - leafcutter ants OT - telomere EDAT- 2020/09/04 06:00 MHDA- 2020/09/04 06:01 PMCR- 2020/08/14 CRDT- 2020/09/04 06:00 PHST- 2020/03/30 00:00 [received] PHST- 2020/05/30 00:00 [accepted] PHST- 2020/09/04 06:00 [entrez] PHST- 2020/09/04 06:00 [pubmed] PHST- 2020/09/04 06:01 [medline] PHST- 2020/08/14 00:00 [pmc-release] AID - 52726 [pii] AID - 10.3897/CompCytogen.v14i3.52726 [doi] PST - epublish SO - Comp Cytogenet. 2020 Aug 14;14(3):369-385. doi: 10.3897/CompCytogen.v14i3.52726. eCollection 2020.