{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,29]],"date-time":"2026-05-29T12:07:54Z","timestamp":1780056474663,"version":"3.54.0"},"reference-count":27,"publisher":"FapUNIFESP (SciELO)","license":[{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"am","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,1,1]],"date-time":"2026-01-01T00:00:00Z","timestamp":1767225600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Braz. J. Biol."],"abstract":"<jats:p>Abstract The nest of leaf-cutting ants is founded by a newly mated queen, which lays the first eggs, giving rise to workers responsible for nest construction and colony maintenance. Bioecological and physiological aspects of queens may help explain variations in the size of newly founded nests of species in the genus Atta. This study aimed to evaluate the relationship between ovary and spermatheca morphology and the oviposition rate of Atta sexdens Linnaeus (Hymenoptera: Formicidae) queens. Forty-one newly founded nests of A. sexdens were collected, and the volume of each fungus garden was measured. The queens from these nests were isolated and fed daily with the colony\u2019s symbiotic fungus to determine their daily egg production over four days. At the end of this period, the ovaries and spermathecae of the queens were dissected and analyzed under light microscopy. The oviposition rate of A. sexdens queens ranged from 0.5 to 90.5 eggs per day. Ovaries showing signs of degeneration, including yolk reabsorption in oocytes, were observed in queens with the lowest oviposition rates. Spermatheca morphology was similar among all queens. The relationship between ovarian morphology and oviposition rate in young A. sexdens queens supports the hypothesis that differences in ovarian condition contribute to variations in egg production. Such differences may ultimately influence colony growth in the field.<\/jats:p>","DOI":"10.1590\/1519-6984.302649","type":"journal-article","created":{"date-parts":[[2026,5,29]],"date-time":"2026-05-29T11:32:33Z","timestamp":1780054353000},"source":"Crossref","is-referenced-by-count":0,"title":["Morphology of ovaries and spermatheca of Atta sexdens (Hymenoptera: Formicidae) queens: implications for oviposition rates"],"prefix":"10.1590","volume":"86","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2362-9624","authenticated-orcid":false,"given":"A. A.","family":"Moreira","sequence":"first","affiliation":[{"name":"Universidade Estadual do Sudoeste da Bahia,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6723-5355","authenticated-orcid":false,"given":"R. S.","family":"Camargo","sequence":"additional","affiliation":[{"name":"Universidade Estadual de S\u00e3o Paulo,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9489-8573","authenticated-orcid":false,"given":"L. C.","family":"Forti","sequence":"additional","affiliation":[{"name":"Universidade Estadual de S\u00e3o Paulo,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9418-8934","authenticated-orcid":false,"given":"M. I.","family":"Camargo-Mathias","sequence":"additional","affiliation":[{"name":"Universidade Estadual Paulista J\u00falio de Mesquita Filho,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4411-5670","authenticated-orcid":false,"given":"M. A.","family":"Castellani","sequence":"additional","affiliation":[{"name":"Universidade Estadual do Sudoeste da Bahia,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2026-281X","authenticated-orcid":false,"given":"J. C.","family":"Zanuncio","sequence":"additional","affiliation":[{"name":"Universidade Federal de Vi\u00e7osa,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0477-4252","authenticated-orcid":false,"given":"J. E.","family":"Serr\u00e3o","sequence":"additional","affiliation":[{"name":"Universidade Federal de Vi\u00e7osa,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7595-1199","authenticated-orcid":false,"given":"I. B.","family":"Calligaris","sequence":"additional","affiliation":[{"name":"Universidade Estadual Paulista J\u00falio de Mesquita Filho,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0796-7268","authenticated-orcid":false,"given":"B. S.","family":"Coelho","sequence":"additional","affiliation":[{"name":"Universidade Estadual do Sudoeste da Bahia,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8080-8207","authenticated-orcid":false,"given":"M. C.","family":"Jean-Baptiste","sequence":"additional","affiliation":[{"name":"Universidade Estadual do Sudoeste da Bahia,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"530","published-online":{"date-parts":[[2026]]},"reference":[{"key":"ref1","series-title":"Sistema para an\u00e1lises estat\u00edsticas de ensaios agron\u00f4micos. Vers\u00e3o 1.1.07 rev.77.","year":"2010"},{"key":"ref2","first-page":"379","article-title":"Three-dimensional reconstruction of ovaries of leaf-cutting ant (Atta sexdens rubropilosa) queens (Hymenoptera: Formicidae)","volume":"53","author":"AMARAL J.B.","year":"2009","journal-title":"Sociobiology"},{"key":"ref3","first-page":"104","article-title":"Periodicidade de oviposi\u00e7\u00e3o em rainhas de Atta laevigata F. 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rubropilosa) and its effects on survival and colony growth during the claustral phase","volume":"58","author":"CAMARGO R.S.","year":"2011","journal-title":"Insectes Sociaux"},{"issue":"2","key":"ref7","doi-asserted-by":"crossref","first-page":"157","DOI":"10.1111\/j.1744-7917.2007.00138.x","article-title":"Worker laying in leafcutter ant Acromyrmex subterraneus brunneus (Formicidae, Attini)","volume":"14","author":"CAMARGO R.S.","year":"2007","journal-title":"Insect Science"},{"key":"ref8","first-page":"377","article-title":"Spermathecae and associated glands of the ants Solenopsis saevissima and Acromyrmex subterraneus subterraneus (Hymenoptera: Myrmicinae)","volume":"52","author":"CARDOSO D.C.","year":"2008","journal-title":"Sociobiology"},{"issue":"1","key":"ref9","doi-asserted-by":"crossref","first-page":"67","DOI":"10.1007\/s00040-004-0775-8","article-title":"Self-restraint and sterility in workers of Acromyrmex and Atta leafcutter ants","volume":"52","author":"DIJKSTRA 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dynamics","volume":"49","author":"KOTAKI T.","year":"2003","journal-title":"Journal of Insect Physiology"},{"key":"ref16","article-title":"Ant diversity (Hymenoptera: Formicidae) in Turvo State Park, municipality of Derrubadas, state of Rio Grande do Sul, Brazil","volume":"83","author":"LUTINSKI J.A.","year":"2021","journal-title":"Brazilian Journal of Biology = Revista Brasileira de Biologia"},{"issue":"3-4","key":"ref17","first-page":"205","article-title":"Intercellular cytoplasm during oogenesis of the moth midge Tinearia alternata Say (Diptera: Psychodidae)","volume":"49","author":"MAZURKIEWICZ M.","year":"2001","journal-title":"Folia Biologica"},{"issue":"2","key":"ref18","doi-asserted-by":"crossref","first-page":"107","DOI":"10.1080\/03946975.2019.1603622","article-title":"Variation in nest morphology, queen oviposition rates, and fungal species present in incipient colonies of the leaf-cutter ant Atta sexdens.","volume":"32","author":"MOREIRA 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A.","year":"2014","journal-title":"Science"}],"container-title":["Brazilian Journal of Biology"],"original-title":["Morfologia dos ov\u00e1rios e da espermateca de rainhas de Atta sexdens (Hymenoptera: Formicidae): implica\u00e7\u00f5es para as taxas de oviposi\u00e7\u00e3o"],"link":[{"URL":"http:\/\/www.scielo.br\/scielo.php?script=sci_pdf&pid=S1519-69842026000100306&tlng=en","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,5,29]],"date-time":"2026-05-29T11:32:37Z","timestamp":1780054357000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.scielo.br\/scielo.php?script=sci_arttext&pid=S1519-69842026000100306&tlng=en"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026]]},"references-count":27,"alternative-id":["S1519-69842026000100306"],"URL":"https:\/\/doi.org\/10.1590\/1519-6984.302649","relation":{},"ISSN":["1678-4375","1519-6984"],"issn-type":[{"value":"1678-4375","type":"electronic"},{"value":"1519-6984","type":"print"}],"subject":[],"published":{"date-parts":[[2026]]},"article-number":"e302649"}}