{"refrec":{"BRefID":280790,"RR":"<b>Quillfeldt, P.; Everaert, N.; Buyse, J.; Masello, J.F.; Dridi, S.</b> (2009). Relationship between plasma leptin-like protein levels, begging and provisioning in nestling thin-billed prions <i>Pachyptila belcheri</i>. <i>Gen. Comp. Endocrinol. 161(2)</i>: 171-178. <a href=\"https://dx.doi.org/10.1016/j.ygcen.2008.12.006\" target=\"_blank\">https://dx.doi.org/10.1016/j.ygcen.2008.12.006</a>","BEntID":272809,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Gen. Comp. Endocrinol. 161(2)</i>: 171-178. <a href=\"https://dx.doi.org/10.1016/j.ygcen.2008.12.006\" target=\"_blank\">https://dx.doi.org/10.1016/j.ygcen.2008.12.006</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Quillfeldt, P.; Everaert, N.; Buyse, J.; Masello, J.F.; Dridi, S.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Quillfeldt, P. <i>et al.</i>","Englishabstract":"While there have been many studies in various species examining the physiological role of leptin, there are so far no data in free-living seabirds. In the present study, we assess whether leptin is expressed in thin-billed prions (<i>Pachyptila belcheri)</i> and we investigate its relationship with feeding-related parameters including body condition, begging intensities and provisioning rates. We showed by Western Blot analysis using leptin-specific antibody that leptin-like protein (14–16 kDa) is expressed in adipose tissue and liver of nestling thin-billed prions. Plasma leptin-like protein levels, determined by RIA, were in the same range (1–3 ng/ml) as in other avian species and increased with age. In two breeding seasons, the plasma leptin-like protein levels were negatively correlated with provisioning rates (<i>R</i> = −0.67 and −0.35 in 2003 and 2004, respectively, <i>P</i> < 0.05) indicating that endogenous leptin may be an anorexigenic hormone in wild birds. Plasma leptin-like protein levels were positively correlated with begging intensities (<i>R</i> = 0.43 and 0.37 in 2003 and 2004, respectively, <i>P</i> < 0.05), and this may be because hungry nestling seabird chicks with low body conditions increased their begging intensities. Plasma leptin-like protein levels did not correlate either with plasma triglyceride or glucose levels in thin-billed prions. Overall, these findings show the presence of leptin-like protein in free-living seabirds and provide new insights into its function and its possible role in feeding-associated behaviours.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Relationship between plasma leptin-like protein levels, begging and provisioning in nestling thin-billed prions <i>Pachyptila belcheri</i>","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-05-31 01:31:33.319473","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"Leptin; Begging; Provisioning; Obesity; Procellariiformes","OtherDescriptors":null,"Notes":null,"AnaPub":2009,"MonPub":null,"DateUpdate":"2022-07-12","DateCreate":"2016-10-09","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000264689300005","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.ygcen.2008.12.006"},"refs":null,"anarec":{"AnaID":280790,"PubliDate":2009,"Pagination":"171-178","XtraPublOfAnaID":null,"ISBN":null,"Volume":"161","Issue":"2","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42729,"SerRR":"General and Comparative Endocrinology. 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