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  1. Research

    Morphogenesis of honeybee hypopharyngeal gland during pupal development

    The hypopharyngeal gland of worker bees contributes to the production of the royal jelly fed to queens and larvae. The gland consists of thousands of two-cell units that are composed of a secretory cell and a ...

    Sascha Peter Klose, Daniel Rolke and Otto Baumann

    Frontiers in Zoology 2017 14:22

    Published on: 20 April 2017

  2. Research

    Mitochondrial acclimation potential to ocean acidification and warming of Polar cod (Boreogadus saida) and Atlantic cod (Gadus morhua)

    Ocean acidification and warming are happening fast in the Arctic but little is known about the effects of ocean acidification and warming on the physiological performance and survival of Arctic fish.

    Elettra Leo, Kristina L. Kunz, Matthias Schmidt, Daniela Storch, Hans-O. Pörtner and Felix C. Mark

    Frontiers in Zoology 2017 14:21

    Published on: 14 April 2017

  3. Research

    An integrative systematic framework helps to reconstruct skeletal evolution of glass sponges (Porifera, Hexactinellida)

    Glass sponges (Class Hexactinellida) are important components of deep-sea ecosystems and are of interest from geological and materials science perspectives. The reconstruction of their phylogeny with molecular...

    Martin Dohrmann, Christopher Kelley, Michelle Kelly, Andrzej Pisera, John N. A. Hooper and Henry M. Reiswig

    Frontiers in Zoology 2017 14:18

    Published on: 21 March 2017

  4. Research

    Flexible reaction norms to environmental variables along the migration route and the significance of stopover duration for total speed of migration in a songbird migrant

    Predicting the consequences of continuing anthropogenic changes in the environment for migratory behaviours such as phenology remains a major challenge. Predictions remain particularly difficult, because our k...

    Heiko Schmaljohann, Simeon Lisovski and Franz Bairlein

    Frontiers in Zoology 2017 14:17

    Published on: 20 March 2017

  5. Research

    Optic-nerve-transmitted eyeshine, a new type of light emission from fish eyes

    Most animal eyes feature an opaque pigmented eyecup to assure that light can enter from one direction only. We challenge this dogma by describing a previously unknown form of eyeshine resulting from light that...

    Roland Fritsch, Jeremy F. P. Ullmann, Pierre-Paul Bitton, Shaun P. Collin and Nico K. Michiels

    Frontiers in Zoology 2017 14:14

    Published on: 27 February 2017

  6. Research

    Group or ungroup – moose behavioural response to recolonization of wolves

    Predation risk is a primary motivator for prey to congregate in larger groups. A large group can be beneficial to detect predators, share predation risk among individuals and cause confusion for an attacking p...

    Johan Månsson, Marie-Caroline Prima, Kerry L. Nicholson, Camilla Wikenros and Håkan Sand

    Frontiers in Zoology 2017 14:10

    Published on: 17 February 2017

  7. Research

    Mate choice for major histocompatibility complex complementarity in a strictly monogamous bird, the grey partridge (Perdix perdix)

    Sexual selection has been hypothesised as favouring mate choice resulting in production of viable offspring with genotypes providing high pathogen resistance. Specific pathogen recognition is mediated by genes...

    Dana Rymešová, Tereza Králová, Marta Promerová, Josef Bryja, Oldřich Tomášek, Jana Svobodová, Petr Šmilauer, Miroslav Šálek and Tomáš Albrecht

    Frontiers in Zoology 2017 14:9

    Published on: 16 February 2017

  8. Research

    Perception of emotional valence in horse whinnies

    Non-human animals often produce different types of vocalisations in negative and positive contexts (i.e. different valence), similar to humans, in which crying is associated with negative emotions and laughter...

    Elodie F. Briefer, Roi Mandel, Anne-Laure Maigrot, Sabrina Briefer Freymond, Iris Bachmann and Edna Hillmann

    Frontiers in Zoology 2017 14:8

    Published on: 11 February 2017

  9. Research

    Effects of the social environment during adolescence on the development of social behaviour, hormones and morphology in male zebra finches (Taeniopygia guttata)

    Individual differences in behaviour are widespread in the animal kingdom and often influenced by the size or composition of the social group during early development. In many vertebrates the effects of social ...

    Stefanie Bölting and Nikolaus von Engelhardt

    Frontiers in Zoology 2017 14:5

    Published on: 25 January 2017

  10. Research

    Start early! Does social instability during the pre- and early postnatal development prepare male wild cavies for social challenge later in life?

    The social environment the mother experiences during pregnancy and lactation can powerfully influence the offspring’s behavioural profile. Our previous studies in wild cavies show that two different social env...

    Katja Siegeler, Lars Lewejohann, Klaus Failing, Norbert Sachser and Sylvia Kaiser

    Frontiers in Zoology 2017 14:2

    Published on: 14 January 2017

  11. Research

    Concordant morphological and molecular clines in a contact zone of the Common and Spined toad (Bufo bufo and B. spinosus) in the northwest of France

    Hybrid zones are regions where individuals of two species meet and produce hybrid progeny, and are often regarded as natural laboratories to understand the process of species formation. Two microevolutionary p...

    Jan W. Arntzen, Tania Trujillo, Roland Butôt, Klaas Vrieling, Onno Schaap, Jorge Gutiérrez-Rodríguez and Iñigo Martínez-Solano

    Frontiers in Zoology 2016 13:52

    Published on: 19 December 2016

  12. Research

    Ambient temperature affects postnatal litter size reduction in golden hamsters

    To better understand how different ambient temperatures during lactation affect survival of young, we studied patterns of losses of pups in golden hamsters (Mesocricetus auratus) at different ambient temperatures...

    Sarah A. Ohrnberger, Raquel Monclús, Heiko G. Rödel and Teresa G. Valencak

    Frontiers in Zoology 2016 13:51

    Published on: 24 November 2016

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