{"id":16645,"date":"2016-12-19T17:57:42","date_gmt":"2016-12-19T17:57:42","guid":{"rendered":"https:\/\/bioengineer.org\/hormone-concentrations-in-young-mammals-predict-trade-offs-later-in-life\/"},"modified":"2016-12-19T17:57:42","modified_gmt":"2016-12-19T17:57:42","slug":"hormone-concentrations-in-young-mammals-predict-trade-offs-later-in-life","status":"publish","type":"post","link":"https:\/\/bioengineer.org\/hormone-concentrations-in-young-mammals-predict-trade-offs-later-in-life\/","title":{"rendered":"Hormone concentrations in young mammals predict trade-offs later in life"},"content":{"rendered":"

Early development after birth can have profound effects on survival and reproduction. Now new research suggests that concentrations of a hormone associated with growth and aging in humans can be used to predict growth, reproduction, and lifespan in a population of wild animals.<\/p>\n

Researchers studying spotted hyenas found that juvenile concentrations of insulin-like growth factor-1 (IGF-1) predicted heavier juvenile weight, which in turn predicted greater likelihood of surviving to reproductive maturity and earlier ages at which they gave birth to their first offspring. However, juvenile IGF-1 also predicted a cost: hyenas with higher concentrations had shorter adult lifespans.<\/p>\n

"These trade-offs have been well-documented in wild mammals, but never have juvenile IGF-1 concentrations been shown to predict them," said Nora Lewin, graduate student and lead author of the Functional Ecology<\/em> study. "Our study highlights the importance of early postnatal development as a determination period in mammals, and suggests that circulating IGF-1 concentrations measured during the first year of life can be used to predict later-life traits in animals that live up to 24 years in the wild." <\/p>\n

###<\/p>\n

Media Contact<\/strong><\/p>\n

Penny Smith
sciencenewsroom@wiley.com<\/p>\n

http:\/\/www.wiley.com\/wiley-blackwell <\/p>\n

############<\/p>\n\n

Story Source: <\/b>Materials<\/a> provided by Scienmag<\/span><\/strong><\/p>\n\n","protected":false},"excerpt":{"rendered":"

Early development after birth can have profound effects on survival and reproduction. Now new research suggests that concentrations of a hormone associated with growth and aging in humans can be used ..<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jnews-multi-image_gallery":[],"jnews_single_post":[],"jnews_primary_category":[],"footnotes":""},"categories":[185],"tags":[],"class_list":["post-16645","post","type-post","status-publish","format-standard","hentry","category-science-news"],"_links":{"self":[{"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/posts\/16645","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/comments?post=16645"}],"version-history":[{"count":0,"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/posts\/16645\/revisions"}],"wp:attachment":[{"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/media?parent=16645"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/categories?post=16645"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bioengineer.org\/wp-json\/wp\/v2\/tags?post=16645"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}} BIOENGINEER.ORG

Page 1 of 7687 1 2 7,687