PMID- 35543891 OWN - NLM STAT- MEDLINE DCOM- 20220928 LR - 20220928 IS - 1573-6857 (Electronic) IS - 0016-6707 (Linking) VI - 150 IP - 5 DP - 2022 Oct TI - Chromosomal distribution of major rDNA and genome size variation in Belostoma angustum Lauck, B. nessimiani Ribeiro & Alecrim, and B. sanctulum Montandon (Insecta, Heteroptera, Belostomatidae). PG - 235-246 LID - 10.1007/s10709-022-00156-8 [doi] AB - Known as "electric-light bugs", belostomatids potentially act as agents of biological control. The Belostoma genus has holokinetic chromosomes, interspecific variation in diploid number, sex chromosome system and DNA content. Thus, the chromosomal complement, the accumulation of constitutive heterochromatin and the distribution of rDNA clusters by fluorescence in situ hybridization (FISH) in Belostoma angustum (BAN), Belostoma sanctulum (BSA), and Belostoma nessimiani (BNE) were evaluated. In addition, a comparative analysis of the DNA content of these species and B. estevezae (BES) was performed. BES has the highest Belostoma DNA content, while BSA has the lowest. BAN showed 2n = 29 + X(1)X(2)Y, while BSA and BNE had 2n = 14 + XY. BSA showed 18S rDNA markings on sex chromosomes, while BNE and BAN did on autosomes. The difference between BSA and BNE occurs because of the possible movement of the rDNA cluster in BNE. We suggest the occurrence of fusion in the autosomes of BSA and BNE, and fragmentation in the sex chromosomes in BAN. Also, the genome size of 1-2 pg represents a haploid DNA content of a common ancestor, from which the genomes of BES and BAN had evolved by gene duplication and heterochromatinization events. CI - (c) 2022. The Author(s), under exclusive licence to Springer Nature Switzerland AG. FAU - Furlan Lopes, Cassiane AU - Furlan Lopes C AUID- ORCID: 0000-0002-4783-4315 AD - Programa de Pos-Graduacao em Ciencias Biologicas, Universidade Federal do Pampa (UNIPAMPA), Rua Aluizio Barros Macedo, Br 290, km 423 Bairro Pirai, Sao Gabriel, RS, 97300-300, Brazil. cassianelopes.aluno@unipampa.edu.br. FAU - Lemos Costa, Alice AU - Lemos Costa A AUID- ORCID: 0000-0003-4620-2989 AD - Programa de Pos-Graduacao em Ciencias Biologicas, Universidade Federal do Pampa (UNIPAMPA), Rua Aluizio Barros Macedo, Br 290, km 423 Bairro Pirai, Sao Gabriel, RS, 97300-300, Brazil. FAU - Dionisio, Jaqueline Fernanda AU - Dionisio JF AUID- ORCID: 0000-0002-1954-6471 AD - Programa de Pos-Graduacao em Genetica e Biologia Molecular, Universidade Estadual de Londrina, Londrina, PR, Brazil. FAU - Delgado Canedo, Andres AU - Delgado Canedo A AUID- ORCID: 0000-0002-8377-6204 AD - Programa de Pos-Graduacao em Ciencias Biologicas, Universidade Federal do Pampa (UNIPAMPA), Rua Aluizio Barros Macedo, Br 290, km 423 Bairro Pirai, Sao Gabriel, RS, 97300-300, Brazil. FAU - da Rosa, Renata AU - da Rosa R AUID- ORCID: 0000-0003-4258-7244 AD - Programa de Pos-Graduacao em Genetica e Biologia Molecular, Universidade Estadual de Londrina, Londrina, PR, Brazil. FAU - Del Valle Garnero, Analia AU - Del Valle Garnero A AUID- ORCID: 0000-0003-4252-8228 AD - Programa de Pos-Graduacao em Ciencias Biologicas, Universidade Federal do Pampa (UNIPAMPA), Rua Aluizio Barros Macedo, Br 290, km 423 Bairro Pirai, Sao Gabriel, RS, 97300-300, Brazil. FAU - Inacio Ribeiro, Jose Ricardo AU - Inacio Ribeiro JR AUID- ORCID: 0000-0001-5035-2766 AD - Laboratorio de Estudos da Biodiversidade do Pampa (LEBIP), Universidade Federal do Pampa, Sao Gabriel, RS, Brazil. FAU - Gunski, Ricardo Jose AU - Gunski RJ AUID- ORCID: 0000-0002-7315-0590 AD - Programa de Pos-Graduacao em Ciencias Biologicas, Universidade Federal do Pampa (UNIPAMPA), Rua Aluizio Barros Macedo, Br 290, km 423 Bairro Pirai, Sao Gabriel, RS, 97300-300, Brazil. LA - eng PT - Journal Article DEP - 20220511 PL - Netherlands TA - Genetica JT - Genetica JID - 0370740 RN - 0 (Alkanesulfonic Acids) RN - 0 (DNA, Ribosomal) RN - 0 (Heterochromatin) RN - 10191-18-1 (BES) SB - IM MH - Alkanesulfonic Acids MH - Animals MH - DNA, Ribosomal/genetics MH - Genome Size MH - Heterochromatin/genetics MH - *Heteroptera/genetics MH - In Situ Hybridization, Fluorescence MH - Sex Chromosomes OTO - NOTNLM OT - Cytogenetics OT - Electric-light bugs OT - Fluorescence in situ hybridization OT - Fragmentation OT - Fusion OT - Holocentric chromosomes EDAT- 2022/05/12 06:00 MHDA- 2022/09/28 06:00 CRDT- 2022/05/11 11:21 PHST- 2021/06/15 00:00 [received] PHST- 2022/04/14 00:00 [accepted] PHST- 2022/05/12 06:00 [pubmed] PHST- 2022/09/28 06:00 [medline] PHST- 2022/05/11 11:21 [entrez] AID - 10.1007/s10709-022-00156-8 [pii] AID - 10.1007/s10709-022-00156-8 [doi] PST - ppublish SO - Genetica. 2022 Oct;150(5):235-246. doi: 10.1007/s10709-022-00156-8. Epub 2022 May 11.