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  1. The planarian Schmidtea mediterranea and the cnidarian Hydra vulgaris have emerged as valuable model organisms in regeneration and stem cell research because of their prominent ability to regenerate a complete or...

    Authors: Boran Altincicek and Andreas Vilcinskas
    Citation: Frontiers in Zoology 2008 5:6
    Content type: Research Published on:

  2. The development of specialized appendages involved in sperm transfer in the males of julid millipedes is an extreme case of specialized, complex structures differentiating in a very advanced phase of post-embr...

    Authors: Leandro Drago, Giuseppe Fusco and Alessandro Minelli
    Citation: Frontiers in Zoology 2008 5:5
    Content type: Hypothesis Published on:

  4. The evolution of reproductive traits, such as hybrid incompatibility (postzygotic isolation) and species recognition (prezygotic isolation), have shown their key role in speciation. Theoretical modeling has re...

    Authors: Jasminca Behrmann-Godel and Gabriele Gerlach
    Citation: Frontiers in Zoology 2008 5:3
    Content type: Research Published on:

  5. Host-parasite interactions are among the most important biotic relationships. Host species should evolve mechanisms to detect their enemies and employ appropriate counterstrategies. Parasites, in turn, should ...

    Authors: Erhard Strohm, Johannes Kroiss, Gudrun Herzner, Claudia Laurien-Kehnen, Wilhelm Boland, Peter Schreier and Thomas Schmitt
    Citation: Frontiers in Zoology 2008 5:2
    Content type: Research Published on:

  6. The standard textbook information that annelid musculature consists of oligochaete-like outer circular and inner longitudinal muscle-layers has recently been called into question by observations of a variety o...

    Authors: Annette Bergter, John L Brubacher and Achim Paululat
    Citation: Frontiers in Zoology 2008 5:1
    Content type: Research Published on:

  7. Recent genome sequence analysis in the red flour beetle Tribolium castaneum indicated that this highly crepuscular animal encodes only two single opsin paralogs: a UV-opsin and a long wavelength (LW)-opsin; howev...

    Authors: Magdalena Jackowska, Riyue Bao, Zhenyi Liu, Elizabeth C McDonald, Tiffany A Cook and Markus Friedrich
    Citation: Frontiers in Zoology 2007 4:24
    Content type: Research Published on:

  8. Owls are known for their silent flight. Even though there is some information available on the mechanisms that lead to a reduction of noise emission, neither the morphological basis, nor the biological mechani...

    Authors: Thomas Bachmann, Stephan Klän, Werner Baumgartner, Michael Klaas, Wolfgang Schröder and Hermann Wagner
    Citation: Frontiers in Zoology 2007 4:23
    Content type: Research Published on:

  9. The retention of ancestral juvenile characters by adult stages of descendants is called paedomorphosis. However, this process can mislead phylogenetic analyses based on morphological data, even in combination ...

    Authors: Torsten H Struck
    Citation: Frontiers in Zoology 2007 4:22
    Content type: Research Published on:

  10. Marine cleaning interactions in which cleaner fish or shrimps remove parasites from visiting 'client' reef fish are a textbook example of mutualism. However, there is yet no conclusive evidence that cleaning o...

    Authors: Redouan Bshary, Rui F Oliveira, Tânia SF Oliveira and Adelino VM Canário
    Citation: Frontiers in Zoology 2007 4:21
    Content type: Research Published on:

  11. Accurate formal taxonomic designations are thought to be of critical importance for the conservation of endangered taxa. The Galápagos sea lion (GSL), being appreciated as a key element of the Galápagos marine...

    Authors: Jochen BW Wolf, Diethard Tautz and Fritz Trillmich
    Citation: Frontiers in Zoology 2007 4:20
    Content type: Research Published on:

  12. Understanding the demographic processes underlying population dynamics is a central theme in ecology. Populations decline if losses from the population (i.e., mortality and emigration) exceed gains (i.e., recr...

    Authors: Benedikt R Schmidt, Michael Schaub and Sebastian Steinfartz
    Citation: Frontiers in Zoology 2007 4:19
    Content type: Research Published on:

  14. In simultaneous hermaphrodites with copulation and internal fertilization it is often unclear whether reciprocal sperm exchange results from the unconditional willingness of both partners to donate and receive...

    Authors: Valerie Schmitt, Nils Anthes and Nico K Michiels
    Citation: Frontiers in Zoology 2007 4:17
    Content type: Research Published on:

  15. Vertebrate epithelial cells typically express a specific set of keratins. In teleosts, keratins are also present in a variety of mesenchymal cells, which usually express vimentin. Significantly, our previous s...

    Authors: Michael Schaffeld, Mark Haberkamp, Sonja Schätzlein, Sebastian Neumann and Christian Hunzinger
    Citation: Frontiers in Zoology 2007 4:16
    Content type: Research Published on:

  16. The clouded leopard (Neofelis nebulosa) is one of the least known cat species and depletion of their forested habitats puts it under heavy pressure. Recently reclassification of Bornean clouded leopards (N. nebul...

    Authors: Andreas Wilting, Valerie A Buckley-Beason, Heike Feldhaar, Jürgen Gadau, Stephen J O'Brien and K Eduard Linsenmair
    Citation: Frontiers in Zoology 2007 4:15
    Content type: Research Published on:

  17. The Chaetognatha (arrow worms) are a group of marine carnivores whose phylogenetic relationships are still vigorously debated. Molecular studies have as yet failed to come up with a stable hypothesis on their ...

    Authors: Steffen Harzsch and Carsten HG Müller
    Citation: Frontiers in Zoology 2007 4:14
    Content type: Research Published on:

  18. Unisexuality, or all female reproduction, is rare among vertebrates. Studying these exceptional organisms may give useful information with respect to the evolution and maintenance of sexual reproduction. Poecilia...

    Authors: Susanne Schories, Kathrin P Lampert, Dunja K Lamatsch, Francisco J García de León and Manfred Schartl
    Citation: Frontiers in Zoology 2007 4:13
    Content type: Research Published on:

  21. Hox genes are expressed in specific domains along the anterior posterior body axis and define the regional identity. In most animals these genes are organized in a single cluster in the genome and the order of...

    Authors: Evelyn E Schwager, Michael Schoppmeier, Matthias Pechmann and Wim GM Damen
    Citation: Frontiers in Zoology 2007 4:10
    Content type: Research Published on:

  22. Flatworms are characterized by an outstanding stem cell system. These stem cells (neoblasts) can give rise to all cell types including germ cells and power the exceptional regenerative capacity of many flatwor...

    Authors: Daniela Pfister, Katrien De Mulder, Isabelle Philipp, Georg Kuales, Martina Hrouda, Paul Eichberger, Gaetan Borgonie, Volker Hartenstein and Peter Ladurner
    Citation: Frontiers in Zoology 2007 4:9
    Content type: Research Published on:

  24. Social insects (ants, bees, wasps and termites) are considered as prime examples of altruism in which individuals (workers) forego their own reproduction to help other individuals reproduce. Such a behaviour i...

    Authors: Judith Korb
    Citation: Frontiers in Zoology 2007 4:7
    Content type: Research Published on:

  26. The Radical Pair model proposes that magnetoreception is a light-dependent process. Under low monochromatic light from the short-wavelength part of the visual spectrum, migratory birds show orientation in thei...

    Authors: Roswitha Wiltschko, Katrin Stapput, Hans-Joachim Bischof and Wolfgang Wiltschko
    Citation: Frontiers in Zoology 2007 4:5
    Content type: Research Published on:

  27. The lack of obvious morphological differences between species impedes the identification of species in many groups of organisms. Meanwhile, DNA-based approaches are increasingly used to survey biological diver...

    Authors: Frieder Mayer, Christian Dietz and Andreas Kiefer
    Citation: Frontiers in Zoology 2007 4:4
    Content type: Short report Published on:

  28. The preference – performance hypothesis predicts that oviposition preference of insects should correlate with host suitability for offspring development. Therefore, insect females have to be able to assess not...

    Authors: Sven Steiner, Daniel Erdmann, Johannes LM Steidle and Joachim Ruther
    Citation: Frontiers in Zoology 2007 4:3
    Content type: Research Published on:

  30. The genus Mantella, endemic poison frogs of Madagascar with 16 described species, are known in the field of international pet trade and entered under the CITES control for the last four years. The phylogeny and p...

    Authors: Falitiana CE Rabemananjara, Ylenia Chiari, Olga Ravoahangimalala Ramilijaona and Miguel Vences
    Citation: Frontiers in Zoology 2007 4:1
    Content type: Research Published on:

  31. Odors are represented by specific spatio-temporal activity patterns in the olfactory bulb of vertebrates and its insect analogue, the antennal lobe. In honeybees inhibitory circuits in the AL are involved in t...

    Authors: Silke Sachse, Philipp Peele, Ana F Silbering, Martin Gühmann and C Giovanni Galizia
    Citation: Frontiers in Zoology 2006 3:22
    Content type: Research Published on:

  33. Insect ears contain very different numbers of sensory cells, from only one sensory cell in some moths to thousands of sensory cells, e.g. in cicadas. These differences still await functional explanation and es...

    Authors: Reinhard Lakes-Harlan and Johannes Strauß
    Citation: Frontiers in Zoology 2006 3:20
    Content type: Hypothesis Published on:

  34. The question of arthropod head segmentation has become one of the central issues in Evolutionary Developmental Biology. The number of theories pertaining to head segments progressively enlarges, old concepts h...

    Authors: Carsten Wolff and Gerhard Scholtz
    Citation: Frontiers in Zoology 2006 3:19
    Content type: Research Published on:

  36. Nests are built in various animal taxa including fish. In systems with exclusive male parental care, the choice of a nest site may be an important component of male fitness. The nest site may influence male at...

    Authors: Ricarda Modarressie and Theo CM Bakker
    Citation: Frontiers in Zoology 2006 3:17
    Content type: Research Published on:

  37. To understand the evolution of animals it is essential to have taxon sampling across a representative spread of the animal kingdom. With the recent rearrangement of most of the Bilateria into three major clade...

    Authors: Carmel McDougall, Wei-Chung Chen, Sebastian M Shimeld and David EK Ferrier
    Citation: Frontiers in Zoology 2006 3:16
    Content type: Research Published on:

  38. Geometric morphometric methods of capturing information about curves or outlines of organismal structures may be used in conjunction with canonical variates analysis (CVA) to assign specimens to groups or popu...

    Authors: H David Sheets, Kristen M Covino, Joanna M Panasiewicz and Sara R Morris
    Citation: Frontiers in Zoology 2006 3:15
    Content type: Methodology Published on:

  40. Mitochondrial (mt) gene arrangement is highly variable among molluscs and especially among bivalves. Of the 30 complete molluscan mt-genomes published to date, only one is of a heterodont bivalve, although thi...

    Authors: Hermann Dreyer and Gerhard Steiner
    Citation: Frontiers in Zoology 2006 3:13
    Content type: Research Published on:

  41. In many birds, day length (=photoperiod) regulates reproductive cycle. The photoperiodic environment varies between different seasons and latitudes. As a consequence, species at different latitudes may have ev...

    Authors: Amit K Trivedi, Sangeeta Rani and Vinod Kumar
    Citation: Frontiers in Zoology 2006 3:12
    Content type: Research Published on:

  42. Poorly preserved biological tissues have become an important source of DNA for a wide range of zoological studies. Measuring the quality of DNA obtained from these samples is often desired; however, there are ...

    Authors: Bruce E Deagle, J Paige Eveson and Simon N Jarman
    Citation: Frontiers in Zoology 2006 3:11
    Content type: Methodology Published on:

  43. In eastern North America two common colour morphs exist in most populations of redback salamanders (Plethodon cinereus). Previous studies have indicated that the different morphs may be adapted to different therm...

    Authors: Erin E Petruzzi, Peter H Niewiarowski and Francisco B-G Moore
    Citation: Frontiers in Zoology 2006 3:10
    Content type: Research Published on:

  44. The sex of many reptiles is determined by the temperature an embryo experiences during its development. Three patterns of temperature-dependent sex determination (TSD) have been defined, but one pattern where ...

    Authors: Nicola J Mitchell, Nicola J Nelson, Alison Cree, Shirley Pledger, Susan N Keall and Charles H Daugherty
    Citation: Frontiers in Zoology 2006 3:9
    Content type: Research Published on:

  46. Sponges (Porifera) are nerve- and muscleless metazoa, but display coordinated motor reactions. Therefore, they represent a valuable phylum to investigate coordination systems, which evolved in a hypothetical U...

    Authors: Kornelia Ellwanger and Michael Nickel
    Citation: Frontiers in Zoology 2006 3:7
    Content type: Research Published on:

  47. For marine snails, olfaction represents a crucial sensory modality for long-distance reception, as auditory and visual information is limited. The posterior tentacle of Aplysia, the rhinophore, is a chemosensory ...

    Authors: Adrian Wertz, Wolfgang Rössler, Malu Obermayer and Ulf Bickmeyer
    Citation: Frontiers in Zoology 2006 3:6
    Content type: Research Published on:

  50. There has been considerable research on rodent ultrasound in the laboratory and these sounds have been well quantified and characterized. Despite the value of research on ultrasound produced by mice in the lab...

    Authors: Matina C Kalcounis-Rueppell, Jackie D Metheny and Maarten J Vonhof
    Citation: Frontiers in Zoology 2006 3:3
    Content type: Research Published on:
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  • ISSN: 1742-9994 (electronic)

Frontiers in Zoology

ISSN: 1742-9994