{"id":119210,"date":"2026-09-11T21:50:12","date_gmt":"2026-09-11T19:50:12","guid":{"rendered":"https:\/\/nilu.gnist.dev\/publikasjoner\/anti-parasite-treatment-and-blood-biochemistry-in-raptornestlings\/"},"modified":"2026-09-11T21:50:12","modified_gmt":"2026-09-11T19:50:12","slug":"anti-parasite-treatment-and-blood-biochemistry-in-raptornestlings","status":"publish","type":"nva_publication","link":"https:\/\/nilu.gnist.dev\/en\/publications\/anti-parasite-treatment-and-blood-biochemistry-in-raptornestlings\/","title":{"rendered":"Anti-parasite treatment and blood biochemistry in raptor\r\nnestlings"},"content":{"rendered":"<p class=\"wp-block-paragraph\">We investigated the effects of parasite removal on various blood clinical\u2013chemical variables (BCCVs). BCCVs are<br \/>\nindicators of health, reflecting, e.g., homeostasis of liver, kidney function, and bone metabolism. The study was conducted in<br \/>\nNorway on chicks of two predatory birds: White-tailed Eagle (Haliaeetus albicilla (L., 1758)) and Northern Goshawk (Accipiter gentilis<br \/>\n(L., 1758)). Chicks were treated against both endoparasites (internal parasites) and ectoparasites (external parasites). We treated<br \/>\nagainst ectoparasites by spraying nests with pyrethrins. Within nests, chicks were randomly treated with either an antihelminthic<br \/>\nmedication (fenbendazole) or sterile water (controls). Treatment against either ectoparasites or endoparasites led to<br \/>\nhigher levels of the bone and liver enzyme alkaline phosphatase. Bilirubin levels were lower when treated against ectoparasites,<br \/>\nwhereas bile acids were higher. Anti-endoparasite treatment led to higher creatinine levels. In Northern Goshawks, treating<br \/>\nagainst endoparasites led to higher urea levels and lower potassium levels. Treatment against ectoparasites increased uric acid<br \/>\nand urea levels and reduced bilirubin levels and protein:creatinine ratios. In conclusion, anti-parasite treatments led to changes<br \/>\nin several BCCVs, suggesting differences in nutrient absorption and physiological state of chicks that are possibly related to the<br \/>\ncosts of parasitism, but maybe also to the parasite treatment itself.<br \/>\ncost of parasitism, BCCVs, blood clinical\u2013chemical variables, raptor, Northern Goshawk, White-tailed Eagle.<br \/>\nR\u00e9sum\u00e9 : Nous avons \u00e9tudi\u00e9 les effets du retrait des parasites sur diff\u00e9rentes variables chimiocliniques du sang (VCCS). Les VCCS sont<br \/>\ndes indicateurs de sant\u00e9, refl\u00e9tant par exemple l\u2019hom\u00e9ostasie du foie, la fonction r\u00e9nale et le m\u00e9tabolisme osseux. L\u2019\u00e9tude a \u00e9t\u00e9 men\u00e9e<br \/>\nen Norv\u00e8ge sur des oisillons de deux esp\u00e8ces d\u2019oiseau pr\u00e9dateur, le pygargue a` queue blanche (Haliaeetus albicilla (L., 1758)) et l\u2019autour<br \/>\ndes palombes (Accipiter gentilis (L., 1758)). Les oisillons ont \u00e9t\u00e9 trait\u00e9s contre les endoparasites (parasites internes) et les ectoparasites<br \/>\n(parasites externes). Le traitement contre les ectoparasites consistait a` vaporiser des pyr\u00e9thrines sur les nids. Dans ces derniers, des<br \/>\noisillons ont \u00e9t\u00e9 trait\u00e9s al\u00e9atoirement avec un m\u00e9dicament helminthicide (fenbendazole) ou de l\u2019eau st\u00e9rile (t\u00e9moins). Les traitements<br \/>\ncontre les ectoparasites et les endoparasites ont tous deux men\u00e9 a` des teneurs plus \u00e9lev\u00e9es en phosphatase alcaline, une enzyme<br \/>\ndes os et du foie. Les concentrations de bilirubine \u00e9taient plus faibles chez les individus trait\u00e9s contre les ectoparasites, alors que<br \/>\nles concentrations d\u2019acides biliaires \u00e9taient plus \u00e9lev\u00e9es chez ces individus. Le traitement contre les endoparasites a men\u00e9 a` des<br \/>\nconcentrations de cr\u00e9atinine plus \u00e9lev\u00e9es. Chez les autours des palombes, le traitement contre les endoparasites a men\u00e9 a` des<br \/>\nconcentrations d\u2019ur\u00e9e plus \u00e9lev\u00e9es et de potassium plus faibles. Le traitement contre les ectoparasites s\u2019est traduit par une<br \/>\naugmentation des concentrations d\u2019acide urique et d\u2019ur\u00e9e et une diminution des concentrations de bilirubine et des rapports<br \/>\nprot\u00e9ines:cr\u00e9atinine. En conclusion, les traitements antiparasitaires ont produit des modifications de plusieurs VCCS, qui<br \/>\nindiqueraient des diff\u00e9rences sur le plan de l\u2019absorption de nutriments et de l\u2019\u00e9tat physiologique des oisillons possiblement<br \/>\nreli\u00e9es aux co\u00fbts du parasitisme, mais aussi, peut-\u00eatre, au traitement antiparasitaire en soi. [Traduit par la R\u00e9daction]<br \/>\nMots-cl\u00e9s : co\u00fbt du parasitisme, VCCS, variables chimiocliniques du sang, rapace, autour des palombes, pygargue a` queue blanche.<\/p>\n","protected":false},"template":"","meta":{"_acf_changed":false,"_searchwp_excluded":"","_id":"","_status":"PUBLISHED","_sync_date":"2026-09-11 14:59:47","footnotes":""},"nva_tax_category":[1099],"class_list":["post-119210","nva_publication","type-nva_publication","status-publish","hentry","nva_tax_category-scientific-journal-publication"],"acf":[],"_links":{"self":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication\/119210","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication"}],"about":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/types\/nva_publication"}],"version-history":[{"count":0,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_publication\/119210\/revisions"}],"wp:attachment":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/media?parent=119210"}],"wp:term":[{"taxonomy":"nva_tax_category","embeddable":true,"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_tax_category?post=119210"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}