1. The origin of the chemical profiles of fungal symbionts and their significance for nestmate recognition in Acromyrmex leaf-cutting ants

   • Freddie-Jeanne Richard
   • Michael Poulsen
   • Jacobus J. Boomsma

   Original Paper 10 May 2007 Pages: 1637 - 1649

   

2. Genetic reconstruction of breeding patterns in gundis (Rodentia: Ctenodactylidae)

   • Karen J. Nutt

   Original Paper 15 May 2007 Pages: 1651 - 1663

   

3. Influence of body condition and weather on departures of first-year European robins, Erithacus rubecula, from an autumn migratory stopover site

   • Arseny Tsvey
   • Victor N. Bulyuk
   • Vlad Kosarev

   Original Paper 04 May 2007 Pages: 1665 - 1674

   

4. Interspecific associations of Cape ground squirrels with two mongoose species: benefit or cost?

   • Jane M. Waterman
   • James D. Roth

   Original Paper 09 May 2007 Pages: 1675 - 1683

   

5. Nestmate recognition for eggs in the honeybee (Apis mellifera L.)

   • Christian W. W. Pirk
   • Peter Neumann
   • Randall Hepburn

   Original Paper 04 May 2007 Pages: 1685 - 1693

   

6. Sex-specific maternal effect on egg mass, laying order, and sibling competition in the Bengalese finch (Lonchura striata var. domestica)

   • Masayo Soma
   • Daichi S. Saito
   • Kazuo Okanoya

   Original Paper 09 May 2007 Pages: 1695 - 1705

   

7. Patch departure rules in Bumblebees: evidence of a decremental motivational mechanism

   • Diane Lefebvre
   • Jacqueline Pierre
   • Jean-Sébastien Pierre

   Original Paper 22 May 2007 Pages: 1707 - 1715

   

8. Defending young biparentally: female risk-taking with and without a male in the burying beetle, Nicrophorus pustulatus

   • Stephen T. Trumbo

   Original Paper 11 May 2007 Pages: 1717 - 1723

   

9. Female tree swallows (Tachycineta bicolor) increase offspring heterozygosity through extrapair mating

   • Mary K. Stapleton
   • Oddmund Kleven
   • Raleigh J. Robertson

   Original Paper 15 May 2007 Pages: 1725 - 1733

   

10. Food supply during prelaying period modifies the sex-dependent investment in eggs of Eurasian kestrels

    • Jesús Martínez-Padilla
    • Juan A. Fargallo

    Original Paper 10 May 2007 Pages: 1735 - 1742

    

11. Cooperative breeding increases reproductive success in the social spider Stegodyphus dumicola (Araneae, Eresidae)

    • Mor Salomon
    • Yael Lubin

    Original Paper 22 May 2007 Pages: 1743 - 1750

    

12. Asymmetric larval competition in the parasitoid wasp Nasonia vitripennis: a role in sex allocation?

    • Edward M. Sykes
    • Tabitha M. Innocent
    • Stuart A. West

    Original Paper 16 May 2007 Pages: 1751 - 1758

    

13. Increased sperm numbers in the vas deferens of meadow voles, Microtus pennsylvanicus, in response to odors of conspecific males

    • Javier delBarco-Trillo
    • Michael H. Ferkin

    Original Paper 09 May 2007 Pages: 1759 - 1764

    

14. Benefits of kin association: related and familiar zebrafish larvae (Danio rerio) show improved growth

    • Gabriele Gerlach
    • Andrea Hodgins-Davis
    • Rebecca C. Hannah

    Original Paper 22 May 2007 Pages: 1765 - 1770

    

15. Risk-prone hunting by chimpanzees (Pan troglodytes schweinfurthii) increases during periods of high diet quality

    • Ian C. Gilby
    • Richard W. Wrangham

    Original Paper 22 May 2007 Pages: 1771 - 1779

    

16. Inter-sexual contests in the hermit crab Pagurus bernhardus: females fight harder but males win more encounters

    • Mark Briffa
    • Dale Dallaway

    Original Paper 22 May 2007 Pages: 1781 - 1787

    

17. The dynamics of social learning in an insect model, the bumblebee (Bombus terrestris)

    • Ellouise Leadbeater
    • Lars Chittka

    Original Paper 24 May 2007 Pages: 1789 - 1796