{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,26]],"date-time":"2026-03-26T12:43:17Z","timestamp":1774528997887,"version":"3.50.1"},"reference-count":23,"publisher":"FapUNIFESP (SciELO)","license":[{"start":{"date-parts":[[2022,1,1]],"date-time":"2022-01-01T00:00:00Z","timestamp":1640995200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2022,1,1]],"date-time":"2022-01-01T00:00:00Z","timestamp":1640995200000},"content-version":"am","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2022,1,1]],"date-time":"2022-01-01T00:00:00Z","timestamp":1640995200000},"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 We monitored the temperature of seven Paleosuchus palpebrosus nests found on the banks of streams surrounding the Brazilian Pantanal, near the southern limit of the species\u00b4 distribution, between 2008 and 2013. The mean temperature of the nests between 45 and 68 days incubation, the presumed period of sex determination, varied between 26.1 and 31.5o C. Nest temperatures were 2 to 5\u00b0C higher than air temperatures, presumably due to metabolic heat of decay of material within the nests, but air temperature explained 10\u201350% of the variance in egg-chamber temperatures. The estimated incubation periods for nests from which eggs hatched were 80, 84, 86, 90 and 104 days with a mean of 89 (SD =9.23) days, though these are probably slight overestimates because eggs may have hatched in the period between inspections. For these nests, there was no significant relationship between mean temperature and incubation period (r2 = 0.23, p = 0.411).<\/jats:p>","DOI":"10.1590\/1519-6984.266315","type":"journal-article","created":{"date-parts":[[2022,11,1]],"date-time":"2022-11-01T14:58:05Z","timestamp":1667314685000},"source":"Crossref","is-referenced-by-count":2,"title":["Temperature variation in nests of Paleosuchus palpebrosus (Crocodylia: Alligatoridae) near the southern edge of the species\u00b4 range, Brazil"],"prefix":"10.1590","volume":"82","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0386-1618","authenticated-orcid":false,"given":"Z.","family":"Campos","sequence":"first","affiliation":[{"name":"Embrapa Pantanal,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1988-3950","authenticated-orcid":false,"given":"W. E.","family":"Magnusson","sequence":"additional","affiliation":[{"name":"Instituto Nacional de Pesquisa da Amaz\u00f4nia,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1703-1244","authenticated-orcid":false,"given":"B.","family":"Soriano","sequence":"additional","affiliation":[{"name":"Embrapa Pantanal,  Brasil"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"530","published-online":{"date-parts":[[2022]]},"reference":[{"key":"ref1","doi-asserted-by":"crossref","DOI":"10.1155\/2021\/8871631","article-title":"Nesting ecology of West African dwarf crocodiles in a heavily disturbed landscape in Chirehin, Ghana","volume":"2021","author":"AMOAH E.","year":"2021","journal-title":"International Journal of Ecology"},{"issue":"1","key":"ref2","doi-asserted-by":"crossref","first-page":"20","DOI":"10.1016\/j.jtherbio.2012.09.004","article-title":"Thermal relations of dwarf caiman, Paleosuchus palpebrosus, in a hillside stream: evidence for an unusual thermal niche among crocodilians","volume":"38","author":"CAMPOS Z.","year":"2013","journal-title":"Journal of Thermal Biology"},{"issue":"20","key":"ref3","first-page":"91","article-title":"Reproductive trade-offs in Caiman crocodilus crocodilus and Caiman crocodilus yacare: implications for size-related management quotas","volume":"18","author":"CAMPOS Z.","year":"2008","journal-title":"The Herpetological Journal"},{"issue":"1","key":"ref4","doi-asserted-by":"crossref","first-page":"95","DOI":"10.1670\/11-224","article-title":"Geographic variation in clutch size and reproductive season of the dwarf caiman, Paleosuchus palpebrosus, in Brazil","volume":"49","author":"CAMPOS Z.","year":"2015","journal-title":"Journal of Herpetology"},{"issue":"4","key":"ref5","first-page":"321","article-title":"Size structure and sex ratio of dwarf caiman in the Serra Amolar, Pantanal, Brazil","volume":"5","author":"CAMPOS Z.M.S.","year":"1995","journal-title":"The Herpetological Journal"},{"issue":"1","key":"ref6","doi-asserted-by":"crossref","first-page":"6","DOI":"10.1016\/j.jtherbio.2011.10.010","article-title":"Microclimate of American crocodile nests in Banco Chinchorro biosphere reserve, Mexico: effect on incubation length, embryos survival and hatchlings sex","volume":"37","author":"CHARRUAU P.","year":"2012","journal-title":"Journal of Thermal Biology"},{"key":"ref7","first-page":"304","article-title":"Additional details on temperature-dependent sex determination in Crocodylus acutus.","volume":"53","author":"CHARRUAU P.","year":"2017","journal-title":"Salamandra"},{"issue":"9","key":"ref8","doi-asserted-by":"crossref","first-page":"1417","DOI":"10.1111\/1365-2656.13037","article-title":"The sex\u2010determination pattern in crocodilians: a systematic review of three decades of research","volume":"88","author":"GONZ\u00c1LEZ E.J.","year":"2019","journal-title":"Journal of Animal Ecology"},{"issue":"1","key":"ref9","doi-asserted-by":"crossref","first-page":"28","DOI":"10.1002\/jez.1402700105","article-title":"Temperature\u2010dependent sex determination in crocodilians","volume":"270","author":"LANG J.W.","year":"1994","journal-title":"The Journal of Experimental Zoology"},{"issue":"4","key":"ref10","doi-asserted-by":"crossref","first-page":"439","DOI":"10.2307\/1563479","article-title":"Maintenance of temperature of crocodile nests (Reptilia, Crocodilidae)","volume":"13","author":"MAGNUSSON W.E.","year":"1979","journal-title":"Journal of Herpetology"},{"key":"ref11","first-page":"101","author":"MAGNUSSON W.E.","year":"1989"},{"issue":"2","key":"ref12","doi-asserted-by":"crossref","first-page":"199","DOI":"10.2307\/1564173","article-title":"Sources of heat for nests of Paleosuchus trigonatus and a review of crocodilian nest temperatures","volume":"19","author":"MAGNUSSON W.E.","year":"1985","journal-title":"Journal of Herpetology"},{"issue":"4","key":"ref13","doi-asserted-by":"crossref","first-page":"397","DOI":"10.2307\/1565056","article-title":"Paleosuchus trigonatus nests: sources of heat and embryo sex ratios","volume":"24","author":"MAGNUSSON W.E.","year":"1990","journal-title":"Journal of Herpetology"},{"key":"ref14","first-page":"78","article-title":"New evidence characterizing temperature-dependent sex determination in broad-snouted caiman, Caiman latirostris.","volume":"12","author":"MARC\u00d3 M.V.P.","year":"2017","journal-title":"Herpetological Conservation and Biology"},{"key":"ref15","first-page":"159","author":"MEDEM F.","year":"1971"},{"issue":"53","key":"ref16","first-page":"33","article-title":"Primer nacimiento de Paleosuchus palpebrosus (Crocodylia palpebrosus)","volume":"14","author":"MEDEM F.","year":"1972","journal-title":"Revista La Academia Colombiana de Ciencias Exatas, F\u00edsicas y Naturales"},{"key":"ref17","series-title":"Los Crocodylia de Sur America","volume":"1","author":"MEDEM F.","year":"1981"},{"issue":"1","key":"ref18","doi-asserted-by":"crossref","first-page":"199","DOI":"10.1670\/0022-1511(2003)037[0199:EOITOI]2.0.CO;2","article-title":"Effect of incubation temperature on incubation period, sex ratio, hatching success, and survivorship in Caiman latirostris (Crocodylia, Alligatoridae)","volume":"37","author":"PI\u00d1A C.I.","year":"2003","journal-title":"Journal of Herpetology"},{"issue":"2","key":"ref19","doi-asserted-by":"crossref","first-page":"205","DOI":"10.1670\/0022-1511(2007)41[205:EOITOT]2.0.CO;2","article-title":"Effects of incubation temperature on the size of Caiman latirostris (Crocodylia: Alligatoridae) at hatching and after one year","volume":"41","author":"PI\u00d1A C.I.","year":"2007","journal-title":"Journal of Herpetology"},{"key":"ref20","series-title":"Amazonia: landscapes and species evolution: a look into the past","first-page":"259","volume-title":"Neogene crocodile and turtle fauna in northern South America","author":"RIFF D.","year":"2010"},{"issue":"1-2","key":"ref21","first-page":"195","article-title":"Descripci\u00f3n del desarrollo embrionario de Paleosuchus trigonatus Schneider en Requena, Loreto [Per\u00fa]","volume":"11","author":"RUESTA P.G.V.","year":"1982","journal-title":"Revista Forestal del Per\u00fa"},{"key":"ref22","first-page":"119","article-title":"Reproducci\u00f3n y crescimiento del cachirre Paleosuchus palpebrosus (Cuvier 1807) (Reptilia; Alligatoridae) en cautividad","volume":"156","author":"RUGELES M.A.","year":"2001","journal-title":"Memoria de la Fundaci\u00f3n La Salle de Ciencias Naturale"},{"issue":"3","key":"ref23","doi-asserted-by":"crossref","first-page":"563","DOI":"10.1071\/WR9830563","article-title":"An interim method for estimating the age of Crocodylus porosus embryos","volume":"10","author":"WEBB G.J.W.","year":"1983","journal-title":"Australian Wildlife Research"}],"container-title":["Brazilian Journal of Biology"],"original-title":["Varia\u00e7\u00e3o da temperatura nos ninhos de Paleosuchus palpebrosus (Crocodylia: Alligatoridae) pr\u00f3ximo ao limite sul da \u00e1rea de distribui\u00e7\u00e3o da esp\u00e9cie, Brasil"],"link":[{"URL":"http:\/\/www.scielo.br\/scielo.php?script=sci_pdf&pid=S1519-69842022000100752&tlng=en","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,11,1]],"date-time":"2022-11-01T14:58:28Z","timestamp":1667314708000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.scielo.br\/scielo.php?script=sci_arttext&pid=S1519-69842022000100752&tlng=en"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022]]},"references-count":23,"alternative-id":["S1519-69842022000100752"],"URL":"https:\/\/doi.org\/10.1590\/1519-6984.266315","relation":{},"ISSN":["1678-4375","1519-6984"],"issn-type":[{"value":"1678-4375","type":"electronic"},{"value":"1519-6984","type":"print"}],"subject":[],"published":{"date-parts":[[2022]]},"article-number":"e266315"}}