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9 results for “African pygmy mouse”
Genotypic sex shapes maternal care in the African Pygmy mouse, Mus minutoides
<p><span>Sexually dimorphic behaviours, such as parental care, have long been thought to be </span><span>mainly</span><span> driven by gonadal hormones. In the past two decades, a few studies have challenged this view, highlighting the direct influence of the sex chromosome complement (XX vs XY or ZZ vs ZW). The African pygmy mouse, </span><span>Mus minutoides</span><span>, is a wild mouse species with naturally occurring XY sex reversal induced by a third, feminizing X* chromosome, leading to three female genotypes: XX, XX* and X*Y. Here, we show that sex reversal in X*Y females shapes a divergent maternal care strategy (maternal aggression, pup retrieval and nesting behaviours) from both XX and XX* females. Although neuroanatomical investigations were inconclusive, we show that the dopaminergic system in the anteroventral periventricular nucleus of the hypothalamus is worth investigating further as it may support differences in pup retrieval behaviour between females. Combining </span><span>behaviours</span><span> and neurobiology in a rodent subject to natural selection, we evaluate potential candidates for the neural basis of maternal behaviours and strengthen the underestimated role of the sex chromosomes in shaping sex differences in brain and behaviours. All things considered, we further highlight the emergence of a third sexual phenotype, challenging the binary view of phenotypic sexes.</span></p>
Genotypic sex shapes maternal care in the African Pygmy mouse, Mus minutoides
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Hormone profiles of the African pygmy mouse Mus minutoides, a species with XY female sex reversal.
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On following pages: 5. Carleton's Tufted-tail Rat (Eliurus carletoni); 6. Daniel's Tufted-tail Rat (Eliurus daniel); 7. Ellerman's Tufted-tail Rat (Eliurus ellermani); 8. Grandidier's Tufted-tail Rat (Eliurus grandidieri); 9. Major's Tufted-tail Rat (Eliurus majori); 10. Lesser Tufted-tail Rat (Eliurus minon; 11. Milne-Edwards's Tufted-tail Rat (Eliurus myoxinus); 12. White-tailed Tufted-tail Rat (Eliurus penicillatus); 13. Petters Tufted-tail Rat (Eliurus petteri); 14. Tanala Tuftedtail Rat (Eliurus tanala); 15. Webb's Tufted-tail Rat (Eliurus webbi); 16. Anjozorobe Naked-tail Forest Mouse (Voalavo antsahabensis); 17. Northern Naked-tail Forest Mouse (Voalavo gymnocaudus); 18. Bastard's Big-footed Mouse (Macrotarsomys bastard); 19. Ankarafantsika Big-footed Mouse (Macrotarsomys ingens); 20. Petter's Big-footed Mouse (Macrotarsomys petteri); 21. Koopman's Forest Mouse (Monticolomys koopmani); 22. Giant Jumping Rat (Hypogeomys antimena); 23. Small Short-tailed Rat (Brachyuromys betsileoensis); 24. Large Short-tailed Rat (Brachyuromys ramirohitra); 25. Audebert's Forest Rat (Nesomys audeberti); 26. Lamberton's Forest Rat (Nesomys lambertoni); 27. Red Forest Rat (Nesomys rufus); 28. Delany's Swamp Mouse (Delanymys brooksi); 29. African White-tailed Rat (Mystromys albicaudatus); 30. Shortridge''s Pygmy Rock Mouse (Petromyscus shortridgei): 31. Short-eared Pygmy Rock Mouse (Petromyscus monticularis); 32. Barbour's Pygmy Rock Mouse (Petromyscus barbouri); 33. Common Pygmy Rock Mouse (Petromyscus collinus). in Nesomyidae
On following pages: 5. Carleton's Tufted-tail Rat (Eliurus carletoni); 6. Daniel's Tufted-tail Rat (Eliurus daniel); 7. Ellerman's Tufted-tail Rat (Eliurus ellermani); 8. Grandidier's Tufted-tail Rat (Eliurus grandidieri); 9. Major's Tufted-tail Rat (Eliurus majori); 10. Lesser Tufted-tail Rat (Eliurus minon; 11. Milne-Edwards's Tufted-tail Rat (Eliurus myoxinus); 12. White-tailed Tufted-tail Rat (Eliurus penicillatus); 13. Petters Tufted-tail Rat (Eliurus petteri); 14. Tanala Tuftedtail Rat (Eliurus tanala); 15. Webb's Tufted-tail Rat (Eliurus webbi); 16. Anjozorobe Naked-tail Forest Mouse (Voalavo antsahabensis); 17. Northern Naked-tail Forest Mouse (Voalavo gymnocaudus); 18. Bastard's Big-footed Mouse (Macrotarsomys bastard); 19. Ankarafantsika Big-footed Mouse (Macrotarsomys ingens); 20. Petter's Big-footed Mouse (Macrotarsomys petteri); 21. Koopman's Forest Mouse (Monticolomys koopmani); 22. Giant Jumping Rat (Hypogeomys antimena); 23. Small Short-tailed Rat (Brachyuromys betsileoensis); 24. Large Short-tailed Rat (Brachyuromys ramirohitra); 25. Audebert's Forest Rat (Nesomys audeberti); 26. Lamberton's Forest Rat (Nesomys lambertoni); 27. Red Forest Rat (Nesomys rufus); 28. Delany's Swamp Mouse (Delanymys brooksi); 29. African White-tailed Rat (Mystromys albicaudatus); 30. Shortridge''s Pygmy Rock Mouse (Petromyscus shortridgei): 31. Short-eared Pygmy Rock Mouse (Petromyscus monticularis); 32. Barbour's Pygmy Rock Mouse (Petromyscus barbouri); 33. Common Pygmy Rock Mouse (Petromyscus collinus).
On following pages: 534. Macedonian Mouse (Mus macedonicus); 535. Mound-building Mouse (Mus spicilegus); 536. Cypriot Mouse (Mus cypriacus); 537. Ethiopian Striped Mouse (Mus imberbis); 538. Mahomet Mouse (Mus mahomet): 539. Hausa Mouse (Mus haussa); 540. West African Pygmy Mouse (Mus musculoides); 541. Baoule Mouse (Mus baoulei); 542. Matthey's Mouse (Mus mattheyi); 543. Toad Mouse (Mus bufo); 544. Callewaert's Mouse (Mus callewaerti); 545. Gounda Mouse (Mus goundae); 546. Neave's Mouse (Mus neavel); 547. Ubangui Mouse (Mus oubanguii); 548. Peters's Mouse (Mus setulosus); 549. Thomas's Mouse (Mus sorella): 550. Gray-bellied Mouse (Mustriton); 551. Delicate Mouse (Mus tenellus); 552. Desert Pygmy Mouse (Mus indutus); 553. Sub-Saharan Pygmy Mouse (Mus minutoides); 554. Setzer's Mouse (Mus setzeri); 555. Little Indian Field Mouse (Mus booduga); 556. Phillips's Mouse (Mus phillipsi); 557. Flat-haired Mouse (Mus platythrix); 558. Saxicolous Mouse (Mus saxicola); 559. Earth-colored Mouse (Mus terricolon); 560. Servant Mouse (Mus famulus): 561. Ceylon Spiny Mouse (Mus fernandoni); 562. Mayor's Mouse (Mus mayori); 563. Ryukyu Mouse (Mus caroli); 564. Fawn-colored Mouse (Mus cervicolor); 565. Cook's Mouse (Mus cookii); 566. Sheath-tailed Mouse (Mus fragilicauda); 567. Little Burmese Field Mouse (Mus lepidoides); 568. Blyth's Mouse (Mus nitidulus); 569. Indochinese Shrew-like Mouse (Mus pahari); 570. Shortridge's Mouse (Mus shortridgei); 571. Sumatran Shrew-like Mouse (Mus crociduroides); 572. Javan Shrew-like Mouse (Mus vulcani). in Muridae
On following pages: 534. Macedonian Mouse (Mus macedonicus); 535. Mound-building Mouse (Mus spicilegus); 536. Cypriot Mouse (Mus cypriacus); 537. Ethiopian Striped Mouse (Mus imberbis); 538. Mahomet Mouse (Mus mahomet): 539. Hausa Mouse (Mus haussa); 540. West African Pygmy Mouse (Mus musculoides); 541. Baoule Mouse (Mus baoulei); 542. Matthey's Mouse (Mus mattheyi); 543. Toad Mouse (Mus bufo); 544. Callewaert's Mouse (Mus callewaerti); 545. Gounda Mouse (Mus goundae); 546. Neave's Mouse (Mus neavel); 547. Ubangui Mouse (Mus oubanguii); 548. Peters's Mouse (Mus setulosus); 549. Thomas's Mouse (Mus sorella): 550. Gray-bellied Mouse (Mustriton); 551. Delicate Mouse (Mus tenellus); 552. Desert Pygmy Mouse (Mus indutus); 553. Sub-Saharan Pygmy Mouse (Mus minutoides); 554. Setzer's Mouse (Mus setzeri); 555. Little Indian Field Mouse (Mus booduga); 556. Phillips's Mouse (Mus phillipsi); 557. Flat-haired Mouse (Mus platythrix); 558. Saxicolous Mouse (Mus saxicola); 559. Earth-colored Mouse (Mus terricolon); 560. Servant Mouse (Mus famulus): 561. Ceylon Spiny Mouse (Mus fernandoni); 562. Mayor's Mouse (Mus mayori); 563. Ryukyu Mouse (Mus caroli); 564. Fawn-colored Mouse (Mus cervicolor); 565. Cook's Mouse (Mus cookii); 566. Sheath-tailed Mouse (Mus fragilicauda); 567. Little Burmese Field Mouse (Mus lepidoides); 568. Blyth's Mouse (Mus nitidulus); 569. Indochinese Shrew-like Mouse (Mus pahari); 570. Shortridge's Mouse (Mus shortridgei); 571. Sumatran Shrew-like Mouse (Mus crociduroides); 572. Javan Shrew-like Mouse (Mus vulcani).
Lemaitre et al. XY Females exhibit steeper reproductive senescence in African pygmy mouse
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Data from: XY females do better than the XX in the African pygmy mouse, Mus minutoides
All therian mammals have a similar XY/XX sex determination system except for a dozen species. The African pygmy mouse, Mus minutoides, harbors an unconventional system in which all males are XY, and there are three types of females: the usual XX but also XX* and X*Y ones (the asterisk designates a sex reversal mutation on the X chromosome). The long-term evolution of such a system is a paradox, since X*Y females are expected to face high reproductive costs (e.g. meiotic disruption and loss of unviable YY embryos), which should prevent invasion and maintenance of a sex-reversal mutation. Hence, mechanisms for compensating for the costs could have evolved in M. minutoides. Data gathered from our laboratory colony revealed that X*Y females do compensate and even show enhanced reproductive performance in comparison to the XX and XX*; they produce significantly more offspring due to (i) a higher probability of breeding, (ii) an earlier first litter, and (iii) a larger litter size, linked to (iv) a greater ovulation rate. These findings confirm that rare conditions are needed for an atypical sex determination mechanism to evolve in mammals, and provide valuable insight into understanding modifications of systems with highly heteromorphic sex chromosomes.
Data from: XY females do better than the XX in the African pygmy mouse, Mus minutoides
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African Pygmy Mouse iPSCs as a Model for In Vitro Embryogenesis, Interspecies Chimerism, and Blastocyst Complementation
GEO Series GSE310034. Mus musculus. 1 samples. Type: Expression profiling by high throughput sequencing.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.