{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,7]],"date-time":"2026-10-07T12:59:23Z","timestamp":1791377963121,"version":"4.3.2"},"reference-count":80,"publisher":"Oxford University Press (OUP)","issue":"2","license":[{"start":{"date-parts":[[2026,8,20]],"date-time":"2026-08-20T00:00:00Z","timestamp":1787184000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100010665","name":"Marie Sk\u0142odowska-Curie","doi-asserted-by":"publisher","award":["797220"],"award-info":[{"award-number":["797220"]}],"id":[{"id":"10.13039\/100010665","id-type":"DOI","asserted-by":"publisher"}]},{"name":"P-MaleReg"},{"DOI":"10.13039\/100020022","name":"Technology Directorate Voucher","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100020022","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000836","name":"University of Liverpool","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000836","id-type":"DOI","asserted-by":"publisher"}]},{"name":"V.R.S. and ERC Consolidator","award":["818416"],"award-info":[{"award-number":["818416"]}]},{"name":"TE_INVASION"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,10,7]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>The P-element, a DNA transposon, has independently invaded two Drosophila species, accompanied by rapid evolution of suppression. In the germline, suppression is mediated primarily by maternally expressed piRNAs, a class of regulatory small RNAs associated with PIWI proteins. The offspring of females that lack P-element-specific piRNAs and males that contain P-elements suffer a syndrome of deleterious phenotypes, including sterility, genome rearrangements, gonadal atrophy, and mutations, while the offspring of the reciprocal cross are normal. These effects, collectively termed hybrid dysgenesis, have been investigated primarily in female Drosophila melanogaster. Here, we study hybrid dysgenesis in male Drosophila simulans. Using an attached-X chromosome stock, we generated genetically identical F1 males that differed only in maternal suppression of the P-element. Using targeted sequencing of P-element breakpoints, we show that P-element transposition is elevated in dysgenic males and confirm a preference for insertion near origins of replication. Using transcriptomics, we show that dysgenic males have elevated P-element expression and reduced splicing suppression, with patterns of gene expression suggesting the loss of mature sperm cells. Fertility assays show higher rates of male sterility but otherwise modest effects on fertility. In conjunction with the transcriptomic data, small RNA sequencing confirms that the piRNA pathway functions in testes. Our results suggest that the P-element may spread more readily through males than females, as transposition rates are similar while fertility defects are less severe in males.<\/jats:p>","DOI":"10.1093\/genetics\/iyag219","type":"journal-article","created":{"date-parts":[[2026,8,20]],"date-time":"2026-08-20T08:10:45Z","timestamp":1787213445000},"source":"Crossref","is-referenced-by-count":0,"title":["The impact of\n                    <i>P<\/i>\n                    -element-induced hybrid dysgenesis on the male germline in\n                    <i>Drosophila simulans<\/i>"],"prefix":"10.1093","volume":"234","author":[{"given":"Joanne S","family":"Griffin","sequence":"first","affiliation":[{"name":"Department of Evolution, Ecology and Behaviour, University of Liverpool , Liverpool L69 7ZB, Merseyside ,","place":["United Kingdom"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0680-3253","authenticated-orcid":false,"given":"Ewan","family":"Harney","sequence":"additional","affiliation":[{"name":"Computational Biology Facility, University of Liverpool , Liverpool L69 7ZB, Merseyside ,","place":["United Kingdom"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Charlton","family":"Capes","sequence":"additional","affiliation":[{"name":"Department of Evolution, Ecology and Behaviour, University of Liverpool , Liverpool L69 7ZB, Merseyside ,","place":["United Kingdom"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rowan","family":"Connell","sequence":"additional","affiliation":[{"name":"Centre for Genomic Research, University of Liverpool , Liverpool L69 7ZB, Merseyside ,","place":["United Kingdom"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9351-1413","authenticated-orcid":false,"given":"Andrea J","family":"Betancourt","sequence":"additional","affiliation":[{"name":"Department of Evolution, Ecology and Behaviour, University of Liverpool , Liverpool L69 7ZB, Merseyside ,","place":["United Kingdom"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1717-2928","authenticated-orcid":false,"given":"Val\u00e8ria","family":"Romero-Soriano","sequence":"additional","affiliation":[{"name":"Centre for Genomic Research, University of Liverpool , Liverpool L69 7ZB, Merseyside ,","place":["United Kingdom"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2026,8,20]]},"reference":[{"key":"2026100708014629100_iyag219-B1","doi-asserted-by":"publisher","author":"Alexa","year":"2026","DOI":"10.18129\/B9.bioc.topGO"},{"key":"2026100708014629100_iyag219-B2","doi-asserted-by":"publisher","first-page":"1600","DOI":"10.1093\/bioinformatics\/btl140","article-title":"Improved scoring of functional groups from gene expression data by decorrelating GO graph structure","volume":"22","author":"Alexa","year":"2006","journal-title":"Bioinformatics"},{"key":"2026100708014629100_iyag219-B3","doi-asserted-by":"publisher","first-page":"54","DOI":"10.1038\/nature23482","article-title":"A heterochromatin-dependent transcription machinery drives piRNA 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