Wood ducks (Aix sponsa) nesting along Bayou Meto downstream from a hazardous waste site in central Arkansas were contaminated with polychlorinated dibenzo-p-dioxins (PCDDs) and dibenzofurans (PCDFs). Residues in eggs, based on 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (TCDD-EQ), ranged up to 611 parts per trillion (ppt), and egg arithmetic means were 90-fold higher at the site nearest the...

Eight microsatellite loci were used to investigate the genetic structure of the giant honeybee (Apis dorsata) population in northeast India. This species migrates seasonally between summer and winter nesting sites, and queens appear to return to their previously occupied site. Furthermore, there is a strong tendency for colonies of this species to aggregate at perennially utilized nesting sites...

Reports of kleptoparasitic events involving Gyps himalayensis (Himalayan Vulture) are limited. In this article we document intraspecific and interspecific interactions at nesting sites, analyse factors influencing behaviour. The study was carried out Hirpora Wildlife Sanctuary Kashmir Himalaya, an elevation about 2,546 m. We observed 61 instances food theft conspecifics (n = 12) heterospecifics...

(1302 articles) evolution (1176 articles) ecology (92 articles) developmental biology Articles on similar topics can be found in the following collections Email alerting service here right-hand corner of the article or click Receive free email alerts when new articles cite this article-sign up in the box at the top How will climate change affect species' reproduction and subsequent survival? In...

Indirect methods to estimate parental status, such as the observation of parental provisioning, have been problematic due to potential biases associated with imperfect detection. We developed a method to evaluate parental status based on a novel combination of parental provisioning observations and hierarchical modeling. In the summers of 2009 to 2011, we surveyed 393 sites, each on three to fo...

Nonrandom dispersal has been recently advanced as a mechanism promoting fine-scale genetic differentiation in resident populations, yet how this applies to species with high rates of dispersal is still unclear. Using a migratory species considered a classical example of male-biased dispersal (the greater snow goose, Chen caerulescens atlantica), we documented a temporally stable fine-scale gene...

Partamona mulata is a stingless bee species endemic to cerrado, a severely threatened phytogeographical domain. Clearing for pasture without proper soil treatment in the cerrado facilitates the proliferation of termite ground nests, which are the nesting sites for P. mulata. The genetic consequences of these changes in the cerrado environment for bee populations are still understudied. In this ...

Nantucket Island, Massachusetts, hosts the largest population of breeding Northern Harriers (Circus cyaneus) in the northeastern United States. We analyzed 128 Manuscript received 31 January 2007; accepted 4 January 2008. 3E-mail: [email protected] The Condor, Vol. 110, Issue 1, pages 177–183. ISSN 0010-5422, electronic ISSN 1938-5422. c © 2008 by The Cooper Ornithological Society. All righ...