On the effect of temperature-dependent sex determination on sex ratio and survivorship in crocodilians
1993; Royal Society; Volume: 252; Issue: 1334 Linguagem: Inglês
10.1098/rspb.1993.0059
ISSN1471-2954
AutoresDiana E. Woodward, James D. Murray,
Tópico(s)Turtle Biology and Conservation
ResumoRestricted accessMoreSectionsView PDF ToolsAdd to favoritesDownload CitationsTrack Citations ShareShare onFacebookTwitterLinked InRedditEmail Cite this article Woodward D. E. and Murray James Dickson 1993On the effect of temperature-dependent sex determination on sex ratio and survivorship in crocodiliansProc. R. Soc. Lond. B.252149–155http://doi.org/10.1098/rspb.1993.0059SectionRestricted accessArticleOn the effect of temperature-dependent sex determination on sex ratio and survivorship in crocodilians D. E. Woodward Google Scholar Find this author on PubMed Search for more papers by this author and James Dickson Murray Google Scholar Find this author on PubMed Search for more papers by this author D. E. Woodward Google Scholar Find this author on PubMed and James Dickson Murray Google Scholar Find this author on PubMed Published:22 May 1993https://doi.org/10.1098/rspb.1993.0059AbstractThe sex ratio of alligators and crocodiles is strongly biased towards females, often as high as 10 females to 1 male. Skewed sex ratios (that is, ratios other than 1:1) are commonly found in species exhibiting environmental sex determination. In crocodilians the temperature of egg incubation is the environmental factor determining sex. If the temperature is cool, around 30 °C, the hatchlings are all female. Warmer temperatures, around 34 °C, hatch all males. The probability that any particular individual female will successfully reproduce herself is low due to high mortalities of eggs, hatchlings and immatures. However, the crocodilia have great survivorship: no (classified) species of alligator or crocodile has become extinct despite extensive hunting and loss of habitat. We develop a nonlinear age-structured model for the population dynamics of alligators and crocodiles based on key life-history data. From our modelling we conclude that: (i) sex ratio is constrained by survivorship considerations; and (ii) temperature-dependent sex determination in crocodilians is a compromise providing the advantages of sexual reproduction while maintaining an unbalanced sex ratio.FootnotesThis text was harvested from a scanned image of the original document using optical character recognition (OCR) software. As such, it may contain errors. Please contact the Royal Society if you find an error you would like to see corrected. Mathematical notations produced through Infty OCR. Previous ArticleNext Article VIEW FULL TEXT DOWNLOAD PDF FiguresRelatedReferencesDetailsCited by Lakin R, Barrett P, Stevenson C, Thomas R and Wills M (2020) First evidence for a latitudinal body mass effect in extant Crocodylia and the relationships of their reproductive characters, Biological Journal of the Linnean Society, 10.1093/biolinnean/blz208, 129:4, (875-887), Online publication date: 28-Mar-2020. Straková B, Rovatsos M, Kubička L and Kratochvíl L (2020) Evolution of Sex Determination in Amniotes: Did Stress and Sequential Hermaphroditism Produce Environmental Determination?, BioEssays, 10.1002/bies.202000050, 42:10, (2000050), Online publication date: 1-Oct-2020. Miyagawa S, Yatsu R and Iguchi T (2018) Environmental Control of Sex Determination and Differentiation in Reptiles Reproductive and Developmental Strategies, 10.1007/978-4-431-56609-0_18, (367-390), . Bharadwaj P and Hall S (2017) Endogenous RNAi Pathways Are Required in Neurons for Dauer Formation in Caenorhabditis elegans , Genetics, 10.1534/genetics.116.195438, 205:4, (1503-1516), Online publication date: 1-Apr-2017. Lee J, Shih P, Schaedel O, Quintero-Cadena P, Rogers A and Sternberg P (2017) FMRFamide-like peptides expand the behavioral repertoire of a densely connected nervous system, Proceedings of the National Academy of Sciences, 10.1073/pnas.1710374114, 114:50, (E10726-E10735), Online publication date: 12-Dec-2017. Werner M, Sieriebriennikov B, Loschko T, Namdeo S, Lenuzzi M, Dardiry M, Renahan T, Sharma D and Sommer R (2017) Environmental influence on Pristionchus pacificus mouth form through different culture methods, Scientific Reports, 10.1038/s41598-017-07455-7, 7:1, Online publication date: 1-Dec-2017. Simoncini M, Cruz F, Larriera A and Piña C (2014) Effects of climatic conditions on sex ratios in nests of broad-snouted caiman, Journal of Zoology, 10.1111/jzo.12140, 293:4, (243-251), Online publication date: 1-Aug-2014. (2014) Bibliography Herpetology, 10.1016/B978-0-12-386919-7.16001-0, (629-725), . Nawab A, Basu D, Yadav S and Gautam P (2013) Impact of Mass Mortility of Gharial Gavialis gangeticus (Gmelin, 1789) on its Conservation in the Chambal River in Rajasthan Faunal Heritage of Rajasthan, India, 10.1007/978-3-319-01345-9_9, (221-229), . Stern S, Fridmann-Sirkis Y, Braun E and Soen Y (2012) Epigenetically Heritable Alteration of Fly Development in Response to Toxic Challenge, Cell Reports, 10.1016/j.celrep.2012.03.012, 1:5, (528-542), Online publication date: 1-May-2012. Willson J, Dorcas M and Snow R (2010) Identifying plausible scenarios for the establishment of invasive Burmese pythons (Python molurus) in Southern Florida, Biological Invasions, 10.1007/s10530-010-9908-3, 13:7, (1493-1504), Online publication date: 1-Jul-2011. Parrott A and David Logan J (2010) Effects of temperature variation on TSD in turtle (C. picta) populations, Ecological Modelling, 10.1016/j.ecolmodel.2010.02.004, 221:10, (1378-1393), Online publication date: 1-May-2010. Kebir A, Ben Miled S, Hbid M and Bravo de la Parra R (2010) Effects of density dependent sex allocation on the dynamics of a simultaneous hermaphroditic population: Modelling and analysis, Journal of Theoretical Biology, 10.1016/j.jtbi.2009.12.013, 263:4, (521-529), Online publication date: 1-Apr-2010. Gallegos A, Plummer T, Uminsky D, Vega C, Wickman C and Zawoiski M (2008) A mathematical model of a crocodilian population using delay-differential equations, Journal of Mathematical Biology, 10.1007/s00285-008-0187-x, 57:5, (737-754), Online publication date: 1-Nov-2008. FREEDBERG S and TAYLOR D (2007) Sex ratio variance and the maintenance of environmental sex determination, Journal of Evolutionary Biology, 10.1111/j.1420-9101.2006.01209.x, 20:1, (213-220), Online publication date: 1-Jan-2007. de Castro M and Silva J (2005) Mathematical modelling of the Ibera Caiman yacaré, Ecological Modelling, 10.1016/j.ecolmodel.2005.01.048, 186:1, (99-109), Online publication date: 1-Jul-2005. Sakata J and Crews D (2004) Developmental sculpting of social phenotype and plasticity, Neuroscience & Biobehavioral Reviews, 10.1016/j.neubiorev.2004.01.001, 28:2, (95-112), Online publication date: 1-Apr-2004. Vitt P, Holsinger K and Jones C (2003) Local differentiation and plasticity in size and sex expression in jack-in-the-pulpit, Arisaema triphyllum (Araceae) , American Journal of Botany, 10.3732/ajb.90.12.1729, 90:12, (1729-1735), Online publication date: 1-Dec-2003. Piña C, Larriera A and Cabrera M (2003) Effect of Incubation Temperature on Incubation Period, Sex Ratio, Hatching Success, and Survivorship in Caiman latirostris (Crocodylia, Alligatoridae), Journal of Herpetology, 10.1670/0022-1511(2003)037[0199:EOITOI]2.0.CO;2, 37:1, (199-202), Online publication date: 1-Mar-2003. Freedberg S and Wade M (2007) CULTURAL INHERITANCE AS A MECHANISM FOR POPULATION SEX-RATIO BIAS IN REPTILES, Evolution, 10.1111/j.0014-3820.2001.tb00621.x, 55:5, (1049-1055) Schweitzer M and Marshall C (2001) A molecular model for the evolution of endothermy in the theropod-bird lineage, Journal of Experimental Zoology, 10.1002/jez.1132, 291:4, (317-338), Online publication date: 15-Dec-2001. Freedberg S and Wade M (2001) CULTURAL INHERITANCE AS A MECHANISM FOR POPULATION SEX-RATIO BIAS IN REPTILES, Evolution, 10.1554/0014-3820(2001)055[1049:CIAAMF]2.0.CO;2, 55:5, (1049), . Lance V, Elsey R and Lang J (2000) Sex ratios of American alligators (Crocodylidae): male or female biased?, Journal of Zoology, 10.1111/j.1469-7998.2000.tb00821.x, 252:1, (71-78), Online publication date: 1-Sep-2000. Wilkins A (1995) Moving up the hierarchy: A hypothesis on the evolution of a genetic sex determination pathway, BioEssays, 10.1002/bies.950170113, 17:1, (71-77), Online publication date: 1-Jan-1995. Lance V (1994) Introduction: Environmental sex determination in reptiles: Patterns and processes, Journal of Experimental Zoology, 10.1002/jez.1402700102, 270:1, (1-2), Online publication date: 15-Sep-1994. Stewart K, Dutton P and Demuth J (2014) Breeding Sex Ratios in Adult Leatherback Turtles (Dermochelys coriacea) May Compensate for Female-Biased Hatchling Sex Ratios, PLoS ONE, 10.1371/journal.pone.0088138, 9:2, (e88138) This Issue22 May 1993Volume 252Issue 1334 Article InformationDOI:https://doi.org/10.1098/rspb.1993.0059Published by:Royal SocietyPrint ISSN:0962-8452Online ISSN:1471-2954History: Manuscript received16/02/1993Manuscript accepted02/03/1993Published online01/01/1997Published in print22/05/1993 License:Scanned images copyright © 2017, Royal Society Citations and impact Large datasets are available through Proceedings B's partnership with Dryad
Referência(s)