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  1. 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

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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

  7. 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

  8. Research

    Comparison of neuromuscular development in two dinophilid species (Annelida) suggests progenetic origin of Dinophilus gyrociliatus

    Several independent meiofaunal lineages are suggested to have originated through progenesis, however, morphological support for this heterochronous process is still lacking. Progenesis is defined as an arrest ...

    Alexandra Kerbl, Elizaveta G. Fofanova, Tatiana D. Mayorova, Elena E. Voronezhskaya and Katrine Worsaae

    Frontiers in Zoology 2016 13:49

    Published on: 8 November 2016

  9. Research

    Plumage quality mediates a life-history trade-off in a migratory bird

    Moult is one of the most costly activities in the annual cycle of birds and most avian species separate moult from other energy-demanding activities, such as migration. To this end, young birds tend to undergo...

    Patrycja Podlaszczuk, Maciej Kamiński, Radosław Włodarczyk, Krzysztof Kaczmarek, Tomasz Janiszewski and Piotr Minias

    Frontiers in Zoology 2016 13:47

    Published on: 10 October 2016

  10. Review

    Odonata (dragonflies and damselflies) as a bridge between ecology and evolutionary genomics

    Odonata (dragonflies and damselflies) present an unparalleled insect model to integrate evolutionary genomics with ecology for the study of insect evolution. Key features of Odonata include their ancient phylo...

    Seth Bybee, Alex Córdoba-Aguilar, M. Catherine Duryea, Ryo Futahashi, Bengt Hansson, M. Olalla Lorenzo-Carballa, Ruud Schilder, Robby Stoks, Anton Suvorov, Erik I. Svensson, Janne Swaegers, Yuma Takahashi, Phillip C. Watts and Maren Wellenreuther

    Frontiers in Zoology 2016 13:46

    Published on: 10 October 2016

  11. Research

    The cephalopod arm crown: appendage formation and differentiation in the Hawaiian bobtail squid Euprymna scolopes

    Cephalopods are a highly derived class of molluscs that adapted their body plan to a more active and predatory lifestyle. One intriguing adaptation is the modification of the ventral foot to form a bilaterally...

    Marie-Therese Nödl, Alexandra Kerbl, Manfred G. Walzl, Gerd B. Müller and Heinz Gert de Couet

    Frontiers in Zoology 2016 13:44

    Published on: 29 September 2016

  12. Research

    Development of foraging skills in two orangutan populations: needing to learn or needing to grow?

    Orangutans have one of the slowest-paced life histories of all mammals. Whereas life-history theory suggests that the time to reach adulthood is constrained by the time needed to reach adult body size, the nee...

    Caroline Schuppli, Sofia I. F. Forss, Ellen J. M. Meulman, Nicole Zweifel, Kevin C. Lee, Evasari Rukmana, Erin R. Vogel, Maria A. van Noordwijk and Carel P. van Schaik

    Frontiers in Zoology 2016 13:43

    Published on: 29 September 2016

  13. Research

    Comparative localization of serotonin-like immunoreactive cells in Thaliacea informs tunicate phylogeny

    Thaliaceans is one of the understudied classes of the phylum Tunicata. In particular, their phylogenetic relationships remain an issue of debate. The overall pattern of serotonin (5-HT) distribution is an exce...

    Alberto Valero-Gracia, Rita Marino, Fabio Crocetta, Valeria Nittoli, Stefano Tiozzo and Paolo Sordino

    Frontiers in Zoology 2016 13:45

    Published on: 29 September 2016

  14. Research

    The bear circadian clock doesn’t ‘sleep’ during winter dormancy

    Most biological functions are synchronized to the environmental light:dark cycle via a circadian timekeeping system. Bears exhibit shallow torpor combined with metabolic suppression during winter dormancy. We ...

    Heiko T. Jansen, Tanya Leise, Gordon Stenhouse, Karine Pigeon, Wayne Kasworm, Justin Teisberg, Thomas Radandt, Robert Dallmann, Steven Brown and Charles T. Robbins

    Frontiers in Zoology 2016 13:42

    Published on: 17 September 2016

  15. Research

    Crown-of-thorns starfish have true image forming vision

    Photoreceptors have evolved numerous times giving organisms the ability to detect light and respond to specific visual stimuli. Studies into the visual abilities of the Asteroidea (Echinodermata) have recently...

    Ronald Petie, Anders Garm and Michael R. Hall

    Frontiers in Zoology 2016 13:41

    Published on: 6 September 2016

  16. Research

    Contextual flexibility in the vocal repertoire of an Amazon parrot

    Understanding the role of avian vocal communication in social organisation requires knowledge of the vocal repertoire used to convey information. Parrots use acoustic signals in a variety of social contexts, b...

    Adolfo Christian Montes-Medina, Alejandro Salinas-Melgoza and Katherine Renton

    Frontiers in Zoology 2016 13:40

    Published on: 26 August 2016

  17. Research

    Resolving the evolution of the mammalian middle ear using Bayesian inference

    The minute, finely-tuned ear ossicles of mammals arose through a spectacular evolutionary transformation from their origins as a load-bearing jaw joint. This involved detachment from the postdentary trough of ...

    Héctor E. Ramírez-Chaves, Vera Weisbecker, Stephen Wroe and Matthew J. Phillips

    Frontiers in Zoology 2016 13:39

    Published on: 24 August 2016

  18. Research

    Artificial selection reveals the energetic expense of producing larger eggs

    The amount of resources provided by the mother before birth has important and long-lasting effects on offspring fitness. Despite this, there is a large amount of variation in maternal investment seen in natura...

    Joel L. Pick, Pascale Hutter, Christina Ebneter, Ann-Kathrin Ziegler, Marta Giordano and Barbara Tschirren

    Frontiers in Zoology 2016 13:38

    Published on: 23 August 2016

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