{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,27]],"date-time":"2026-06-27T01:39:18Z","timestamp":1782524358174,"version":"3.54.5"},"reference-count":60,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2018,10,26]],"date-time":"2018-10-26T00:00:00Z","timestamp":1540512000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["J Exp Zool Pt A"],"published-print":{"date-parts":[[2019,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Allometric equations represent relationships between morphological\/physiological traits and body mass <jats:italic>Y\u2009=\u2009aM<\/jats:italic><jats:sup><jats:italic>b<\/jats:italic><\/jats:sup>, where <jats:italic>Y<\/jats:italic> is the trait, a is elevation, <jats:italic>b<\/jats:italic> is\u00a0the exponent describing the shape of the line, and <jats:italic>M<\/jats:italic> is body mass. We measured visceral organ masses in hatchling alligators (<jats:italic>Alligator mississippiensis<\/jats:italic>) from five clutches from approximately 45 to 500\u2009g wet body mass. The interaction between initial egg mass and clutch identity was significant for initial hatchling mass, but only egg mass, not clutch, had a significant effect on initial snout\u2013vent and head length. Kidney and liver mass showed biphasic scaling with body mass, as determined by \u201cbreakpoint\u201d analyses, with the breakpoint at 120\u2009g wet body mass. Kidney and liver wet mass showed slopes <jats:italic>b<\/jats:italic>\u2009&gt;\u20091.0 as animals increased approximately 45\u2013120\u2009g, with significantly lower <jats:italic>b<\/jats:italic> approximately 0.8\u20130.9 for alligators 120\u2013500\u2009g. Within kidney and liver mass, below and above the breakpoint, organ mass slopes tended to be similar across clutches. Lung and heart wet mass did not show biphasic scaling, with <jats:italic>b<\/jats:italic> approximately 0.8\u20130.9. Within lung and heart mass, clutches had statistically identical slopes. Combined clutch data for wet mass showed distinct regressions with <jats:italic>b<\/jats:italic>\u2009&gt;\u20091.4 for approximately 45\u2013120\u2009g alligators\u2019 kidney and liver mass, compared with approximately 120\u2013500\u2009g alligators\u2019 kidney, liver, lung, and heart mass <jats:italic>b<\/jats:italic>\u2009&lt;\u20091.0. Alligators show rapid kidney and liver growth following hatching, with higher rates than lung or heart tissue. Clutch, egg mass, and hatchling size influence organ size, and each factor should be accounted for in future studies exploring reptile morphology and physiology to assess environmental <jats:italic>versus<\/jats:italic> clutch contributions.<\/jats:p>","DOI":"10.1002\/jez.2236","type":"journal-article","created":{"date-parts":[[2018,10,26]],"date-time":"2018-10-26T12:00:43Z","timestamp":1540555243000},"page":"38-51","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Scaling of major organs in hatchling female American alligators (<i>Alligator mississippiensis<\/i>)"],"prefix":"10.1002","volume":"331","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-5693-4812","authenticated-orcid":false,"given":"John","family":"Eme","sequence":"first","affiliation":[{"name":"Department of Biological Sciences California State University San Marcos San Marcos California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cassidy J.","family":"Cooper","sequence":"additional","affiliation":[{"name":"Department of Biological Sciences California State University San Marcos San Marcos California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew","family":"Alvo","sequence":"additional","affiliation":[{"name":"Department of Biological Sciences California State University San Marcos San Marcos California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Juan","family":"Vasquez","sequence":"additional","affiliation":[{"name":"Department of Biological Sciences California State University San Marcos San Marcos California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sara","family":"Muhtaseb","sequence":"additional","affiliation":[{"name":"Department of Biological Sciences California State University San Marcos San Marcos California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Susan","family":"Rayman","sequence":"additional","affiliation":[{"name":"Department of Biological Sciences California State University San Marcos San Marcos California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"Schmoyer","sequence":"additional","affiliation":[{"name":"Department of Biological Sciences California State University San Marcos San Marcos California"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ruth M.","family":"Elsey","sequence":"additional","affiliation":[{"name":"Louisiana Department of Wildlife and Fisheries, Rockefeller Wildlife Refuge Grand Chenier Louisiana"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2018,10,26]]},"reference":[{"key":"e_1_2_6_1_2_1","doi-asserted-by":"publisher","DOI":"10.1086\/physzool.68.1.30163919"},{"key":"e_1_2_6_1_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cbpa.2012.02.005"},{"key":"e_1_2_6_1_4_1","first-page":"181","article-title":"Mathematical models for growth in alligator (Alligator mississippiensis) embryos developing at different incubation temperatures","volume":"187","author":"Bardsley W. G.","year":"1995","journal-title":"Journal of Anatomy"},{"key":"e_1_2_6_1_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1558-5646.1952.tb01438.x"},{"key":"e_1_2_6_1_6_1","doi-asserted-by":"publisher","DOI":"10.2307\/1446112"},{"key":"e_1_2_6_1_7_1","doi-asserted-by":"publisher","DOI":"10.7717\/peerj.818"},{"key":"e_1_2_6_1_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.resp.2011.05.001"},{"key":"e_1_2_6_1_9_1","volume-title":"Size, function, and life history","author":"Calder W. A.","year":"1996"},{"issue":"2","key":"e_1_2_6_1_10_1","first-page":"47","article-title":"Some observations on growth of captive alligators","volume":"58","author":"Coulson T.","year":"1973","journal-title":"Zoologica"},{"key":"e_1_2_6_1_11_1","doi-asserted-by":"publisher","DOI":"10.2307\/1446962"},{"key":"e_1_2_6_1_12_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-294X.2001.01241.x"},{"key":"e_1_2_6_1_13_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-7998.1975.tb01405.x"},{"key":"e_1_2_6_1_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/0300-9629(92)90164-L"},{"key":"e_1_2_6_1_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cbpa.2013.03.021"},{"key":"e_1_2_6_1_16_1","doi-asserted-by":"publisher","DOI":"10.1242\/jeb.042051"},{"key":"e_1_2_6_1_17_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00360-009-0374-0"},{"key":"e_1_2_6_1_18_1","doi-asserted-by":"publisher","DOI":"10.1890\/04-1618"},{"key":"e_1_2_6_1_19_1","first-page":"pp. 329","volume-title":"Biology of the reptilia: Development","author":"Ferguson M. W. J.","year":"1985"},{"key":"e_1_2_6_1_20_1","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.2008.1735"},{"key":"e_1_2_6_1_21_1","doi-asserted-by":"publisher","DOI":"10.1668\/0003-1569(2000)040[0748:HOTCOA]2.0.CO;2"},{"key":"e_1_2_6_1_22_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1439-0426.2007.00952.x"},{"key":"e_1_2_6_1_23_1","doi-asserted-by":"publisher","DOI":"10.1017\/S1464793105006834"},{"key":"e_1_2_6_1_24_1","doi-asserted-by":"publisher","DOI":"10.1111\/brv.12115"},{"key":"e_1_2_6_1_25_1","doi-asserted-by":"publisher","DOI":"10.2307\/1442481"},{"key":"e_1_2_6_1_26_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1469-185X.1966.tb01624.x"},{"key":"e_1_2_6_1_27_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00360-010-0499-1"},{"key":"e_1_2_6_1_28_1","doi-asserted-by":"publisher","DOI":"10.3181\/00379727-79-19302"},{"key":"e_1_2_6_1_29_1","doi-asserted-by":"publisher","DOI":"10.1080\/02724634.1999.10011145"},{"key":"e_1_2_6_1_30_1","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.1950.0055"},{"key":"e_1_2_6_1_31_1","doi-asserted-by":"publisher","DOI":"10.1093\/icb\/29.3.987"},{"key":"e_1_2_6_1_32_1","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.2006.3741"},{"key":"e_1_2_6_1_33_1","doi-asserted-by":"publisher","DOI":"10.1139\/z85-418"},{"key":"e_1_2_6_1_34_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0531-5565(03)00112-8"},{"key":"e_1_2_6_1_35_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cbpb.2004.05.011"},{"key":"e_1_2_6_1_36_1","doi-asserted-by":"publisher","DOI":"10.2307\/1435797"},{"key":"e_1_2_6_1_37_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cbpa.2007.08.006"},{"key":"e_1_2_6_1_38_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.cbpa.2015.02.013"},{"key":"e_1_2_6_1_39_1","doi-asserted-by":"publisher","DOI":"10.1086\/661953"},{"key":"e_1_2_6_1_40_1","doi-asserted-by":"publisher","DOI":"10.1098\/rspb.1990.0017"},{"key":"e_1_2_6_1_41_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-2435.2006.01137.x"},{"key":"e_1_2_6_1_42_1","first-page":"135","article-title":"Mating system of Caiman yacare (Reptilia: Alligatoridae) described from microsatellite genotypes","volume":"108","author":"Ojeda G. N.","year":"2017","journal-title":"Journal of Heredity"},{"key":"e_1_2_6_1_43_1","doi-asserted-by":"publisher","DOI":"10.1242\/jeb.023945"},{"key":"e_1_2_6_1_44_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0150245"},{"key":"e_1_2_6_1_45_1","doi-asserted-by":"publisher","DOI":"10.1017\/CBO9781139167826"},{"key":"e_1_2_6_1_46_1","doi-asserted-by":"publisher","DOI":"10.1152\/physiol.00016.2016"},{"key":"e_1_2_6_1_47_1","doi-asserted-by":"publisher","DOI":"10.1086\/422766"},{"key":"e_1_2_6_1_48_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00360-012-0732-1"},{"key":"e_1_2_6_1_49_1","doi-asserted-by":"publisher","DOI":"10.1242\/jeb.01071"},{"key":"e_1_2_6_1_50_1","unstructured":"Slay C. E. (2015).Plasticity along the cardiac\u2010gastrointestinal axis in carnivorous reptiles. (Ph.D. Dissertation) Irvine CA: University of California Irvine."},{"key":"e_1_2_6_1_51_1","doi-asserted-by":"publisher","DOI":"10.1242\/jeb.119453"},{"key":"e_1_2_6_1_52_1","doi-asserted-by":"publisher","DOI":"10.1086\/679718"},{"key":"e_1_2_6_1_53_1","doi-asserted-by":"publisher","DOI":"10.1186\/gb-2012-13-1-415"},{"key":"e_1_2_6_1_54_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.150.3699.1039"},{"key":"e_1_2_6_1_55_1","doi-asserted-by":"publisher","DOI":"10.1152\/ajpregu.00320.2015"},{"key":"e_1_2_6_1_56_1","doi-asserted-by":"publisher","DOI":"10.2307\/1442310"},{"key":"e_1_2_6_1_57_1","doi-asserted-by":"publisher","DOI":"10.1890\/03-0757"},{"key":"e_1_2_6_1_58_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1558-5646.2009.00747.x"},{"key":"e_1_2_6_1_59_1","doi-asserted-by":"publisher","DOI":"10.1890\/05-1883"},{"key":"e_1_2_6_1_60_1","doi-asserted-by":"publisher","DOI":"10.1016\/B978-0-12-374553-8.00178-7"},{"key":"e_1_2_6_1_61_1","doi-asserted-by":"publisher","DOI":"10.1242\/jeb.065144"}],"container-title":["Journal of Experimental Zoology Part A: Ecological and Integrative Physiology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2Fjez.2236","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/jez.2236","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,9,15]],"date-time":"2023-09-15T17:38:42Z","timestamp":1694799522000},"score":1,"resource":{"primary":{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/10.1002\/jez.2236"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2018,10,26]]},"references-count":60,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2019,1]]}},"alternative-id":["10.1002\/jez.2236"],"URL":"https:\/\/doi.org\/10.1002\/jez.2236","archive":["Portico"],"relation":{},"ISSN":["2471-5638","2471-5646"],"issn-type":[{"value":"2471-5638","type":"print"},{"value":"2471-5646","type":"electronic"}],"subject":[],"published":{"date-parts":[[2018,10,26]]},"assertion":[{"value":"2018-06-12","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2018-09-02","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2018-10-26","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}