Nalazite se na CroRIS probnoj okolini. Ovdje evidentirani podaci neće biti pohranjeni u Informacijskom sustavu znanosti RH. Ako je ovo greška, CroRIS produkcijskoj okolini moguće je pristupi putem poveznice www.croris.hr
izvor podataka: crosbi

Resource allocation within the replacement clutch: do female European starling (Sturnus vulgaris Linneus) adjust their reproductive strategy after a full clutch loss? (CROSBI ID 173918)

Prilog u časopisu | kratko priopćenje | međunarodna recenzija

Kocijan, Ivna ; Dolenec, Petra ; Dolenec, Zdravko ; Radović, Andreja Resource allocation within the replacement clutch: do female European starling (Sturnus vulgaris Linneus) adjust their reproductive strategy after a full clutch loss? // Current science, 107 (2014), 9; 1597-1601

Podaci o odgovornosti

Kocijan, Ivna ; Dolenec, Petra ; Dolenec, Zdravko ; Radović, Andreja

engleski

Resource allocation within the replacement clutch: do female European starling (Sturnus vulgaris Linneus) adjust their reproductive strategy after a full clutch loss?

An important factor in the evolution of reproductive strategies in birds is the loss of a clutch or a brood. Many avian species produce a replacement clutch following the loss of the first clutch, but additional breeding effor carries physiological costs and can also reduce female fitness. Thus, egg production in replacement clutches is usually reduced. In contrast, European starling mothers seem to invest equally in their first and replacement clutches. This study investigated whether female starlings use differential allocation of resources to offspring, rather than egg production, to strategically balance investment and returns from the replacement clutch. By removing the first clutch, we induced females to lay a replacement clutch, and focused on covariation of egg size, embryo sex and laying order in both clutches. Results suggest that starling mothers created a pattern of resource allocation with laying order, but not with offspring sex, in the replacement clutch ; whereas no pattern of resource allocation existed in the first clutch. This finding indicates that although starlings do not reduce egg production between first and replacement clutches, they may use other mechanisms to fine-tune their investment and maximize their fitness gains from the replacement clutch.

reproductive strategy; replacement clutch; sex ratio; egg traits; laying order

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o izdanju

107 (9)

2014.

1597-1601

objavljeno

0011-3891

Povezanost rada

Biologija

Indeksiranost