HOME >> BIOLOGY >> NEWS
Delayed breeding is not necessarily costly to lifetime reproductive success

Using 24 years of data from the longest-running study of a cooperative bird species on the African continent, researchers at the Universities of Bristol and Cape Town have cast doubt on one of the biggest assumptions in behavioral ecology: that a delayed start to breeding is necessarily costly to reproductive success.

The work, which appears online in the journal Current Biology on April 5th, is reported by Andrew Radford of the University of Bristol, UK, and colleagues at the University of Cape Town, South Africa.

In theory, individuals are expected to maximize their lifetime reproductive success by starting to breed as early as possible in life. Delayed reproduction on the part of so-called helpers in cooperative species therefore seems likely to be a bad strategy, and, consequently, much research has focused on how these individuals might overcome the assumed cost. Few studies, however, have attempted to quantify the cost itself. Moreover, it has been generally assumed that males and females are similarly affected by a delayed start to breeding.

In the new work on green woodhoopoes (Phoeniculus purpureus), a cooperatively breeding bird species, Amanda Hawn and colleagues show that although males met the traditional expectation that a delayed start to breeding results in a reduced lifetime reproductive success, females that started to breed later in life actually had a greater lifetime reproductive success than those that started earlier. In both sexes, the association between age at first breeding and lifetime reproductive success was driven by differences in breeding-career length, rather than per-season productivity: Females that started later in life paradoxically had longer breeding careers than those that started earlier. These results demonstrate the importance of considering sex-specific reproductive costs when estimating the payoffs from life-history decisionsthe authors hypothesize that young female breeders may have a re
'"/>

Contact: Erin Doonan
edoonan@cell.com
617-397-2802
Cell Press
5-Apr-2007


Page: 1 2

Related biology news :

1. Delayed treatment of childhood-onset bipolar disorder results in negative outcome in adults
2. Turtles are loyal in feeding as well as in breeding
3. For some species, an upside to inbreeding
4. Wolves are suffering less from inbreeding than expected
5. Insights into honey bee sex gene could bring sweet success in breeding
6. Childcare tug-of-war influences shorebird breeding systems
7. Conflict over rearing young shapes breeding systems
8. Book on avian hybrids gives startling new insights into birds breeding habits
9. Active inbreeding avoidance in wild capuchin monkeys
10. El Nino events affect whale breeding
11. Research suggests fitness of Florida panthers improved by limited breeding with Texas animals

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:7/1/2020)... ... July 01, 2020 , ... Cure Glioblastoma, a registered 501(c)(3) ... and aggressive adult brain cancer—announced today the appointments of its first Senior Fellows: ... supporting the organization’s initiatives and overall vision. , "Senior Fellows are more than ...
(Date:6/23/2020)... ... June 23, 2020 , ... First Aid Africa, a Scottish ... supplier and manufacturer of innovative portable renewable energy equipment, have announced the success ... the COVID-19 pandemic in Zambia. , One of Renovagen’s FAST FOLD portable solar ...
(Date:6/19/2020)... ... June 18, 2020 , ... ... “Automate Your Lab with Software for Data Decisions,” for pharmaceutical and biotech ... to integrate and automate cutting-edge scientific instruments and laboratory equipment from dozens ...
Breaking Biology News(10 mins):
(Date:7/1/2020)... BOWLING GREEN, Ohio (PRWEB) , ... June 29, ... ... cooperative that offers access to competitively procured purchasing contracts to its membership, recently ... BioFit to provide TIPS members with the opportunity to purchase ergonomic seating, cafeteria ...
(Date:6/28/2020)... ... June 25, 2020 , ... With ... a vaccine or drug treatment. In an effort to better understand the cellular ... the world’s largest imaging dataset portraying therapeutic compound effects from over 1,600 approved ...
(Date:6/23/2020)... ... June 23, 2020 , ... ... lab-made bioresearch materials, today announced the availability of the Delta-G-VSV Pseudotyping System for ... of Tennessee, enables studies of SARS-CoV-2 viral entry and COVID-19 vaccine effectiveness at ...
(Date:6/23/2020)... , ... June 22, 2020 , ... ... glutamine antagonist, DRP-104, will be presented June 22-24 during the American Association for ... DRP-104; and, the other profiles the potent, consistent single agent activity in KEAP1 ...
Breaking Biology Technology:
Cached News: