Symbiotic fungi promote invasion into diverse plant communities (Rudgers et al.)

December 10, 2003

Populations of several European passerines that winter south of the Sahara have undergone a marked decline. The causes of negative population trends are largely unknown, but ecological conditions during winter in Africa may have carry-over effects during northward spring migration and reproduction. In the January issue of Ecology Letters, Saino, Szép, Romano, Rubolini, and Møller analyse the effect of ecological conditions in the winter quarters on timing of arrival of barn swallows (Hirundo rustica) to their Italian breeding grounds the following spring. An index of primary production obtained by satellite remote-sensing and reflecting the vigour of vegetation in an area between Ghana and the Republic of Centrafrica, where Italian swallows winter, predicted arrival date of individuals in consecutive breeding seasons. After favourable winters swallows arrived earlier and this had positive consequences for breeding success. Population trends of European long-distance migrants may thus depend on ecological conditions in their winter quarters.
-end-


Blackwell Publishing Ltd.

Related Reproduction Articles from Brightsurf:

"Helper" ambrosia beetles share reproduction with their mother
A new study shows for the first time that Xyleborus affinis beetles are cooperative breeders, where females disperse to found new nests or stay to help their mother raise siblings, while also reproducing themselves.

Songbirds reduce reproduction to help survive drought
New research from the University of Montana suggests tropical songbirds in both the Old and New Worlds reduce reproduction during severe droughts, and this - somewhat surprisingly -- may actually increase their survival rates.

Stopping listeria reproduction 'in its tracks'
Listeria contaminations can send food processing facilities into full crisis mode with mass product recalls, federal warnings and even hospitalization or death for people who consume the contaminated products.

Pregnancy complications in assisted reproduction linked to a specific process
An experimental study from researchers in the Perelman School of Medicine at the University of Pennsylvania links a specific procedure -- embryo culture -- that is part of the assisted reproduction process (ART) to placental abnormalities, risk for preeclampsia, and abnormal fetal growth.

Not children, but 'super-happy families' the aim of assisted reproduction
Researcher Judith Lind has studied how staff at fertility clinics view the assessments that childless couples and women undergo in order to access assisted reproduction.

Cell reproduction dogma challenged
Meiosis is essential to sexual reproduction. For almost 15 years, it has been commonly held that retinoic acid, a molecule derived from vitamin A, triggers meiosis in mammalian germ cells.

Collaboration yields insights into mosquito reproduction
As carriers for diseases like dengue and Zika, mosquitoes kill more than 1 million people each year and sicken hundreds of millions more.

Moongoose females compete over reproduction
A new study on wild banded mongooses reveals that females may use spontaneous abortion to cope with reproductive competition, and to save their energy for future breeding attempts in better conditions.

Researchers discover the 'KARAPPO' gene and illuminate vegetative reproduction
The mechanism by which liverwort (Marchantia polymorpha) asexually reproduces via the development of clonal progenies (gemmae) has been revealed by a cross-institutional research group.

Capturing elephants from the wild hinders their reproduction for over a decade
Capturing elephants to keep in captivity not only hinders their reproduction immediately, but also has a negative effect on their calves, according to new research.

Read More: Reproduction News and Reproduction Current Events
Brightsurf.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.