Zoology: Recent submissions
Now showing items 221-240 of 241
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Developing bones are differentially affected by compromised skeletal muscle formation
(University of Edinburgh (datashare), 2010)Mechanical forces are essential for normal adult bone function and repair, but the impact of prenatal muscle contractions on bone development remains to be explored in depth in mammalian model systems. In this study, we ... -
Effects of retinoic acid excess on expression oh Hox 2.9 and Krox 20 and on morphological segmentation in the hindbrain of mouse embryos
(Nature Publishing Group, 1991)Mouse embryos were exposed to maternally administered RA on day 8.0 or day 7 3/4 of development, i.e. at or just before the differentiation of the cranial neural plate, and before the start of segmentation. On day 9.0, the ... -
Two domains of the human bZIP transcription factor TCF11 are necessary for transactivation
(American Society for Biochemistry and Molecular Biology, 2001) -
Gene expression analysis of canonical Wnt pathway transcriptional regulators during early morphogenesis of the facial region in the mouse embryo
(University of Edinburgh (datashare), 2009)Structures and features of the face, throat and neck are formed from a series of branchial arches that grow out along the ventrolateral aspect of the embryonic head. Multiple signaling pathways have been implicated in ... -
On the evolution of claustral colony-founding in ants
(Evolutionary Ecology Ltd, 2003)The dispersal and survival of offspring is a key step in an organism?s life history. In ants, the main strategy used to complete this step is known as independent colony-founding. Here, individual young queens leave their ... -
Activation of host constitutive immune defence by an intestinal trypanosome parasite of bumble bees
(Cambridge University Press, 2003)Many parasites have to survive the harsh environment of insect guts to complete their life-cycle. Important parasites of man and animals pass part of their life cycle in insect guts and hence understanding how insects ... -
Strong context-dependent virulence in a host-parasite system: reconciling genetic evidence with theory
(Blackwell, 2003)1. Parasites can have dramatic effects on the ecology of their hosts. Such strong host-parasite interactions are the result of either parasites with generally high virulence, or generally benign parasites that nevertheless ... -
Does size matter? Bumblebee behaviour and the pollination of Cytisus scoparius L. (Fabaceae)
(2000)The effects of forager body size and floral display size on pollinator behaviour were assessed in a relatively specialised plant-pollinator system. Cytisus scoparius, which has structurally complex, nectarless flowers is ... -
Building on IUCN regional red lists to produce lists of species of conservation priority: A model with Irish bees
(Society for Conservation Biology, 2007)A World Conservation Union (IUCN) regional red list is an objective assessment of regional extinction risk and is not the same as a list of conservation priority species. Recent research reveals the widespread, but incorrect, ... -
Queen-controlled sex ratios and worker-reproduction in the bumble bee Bombus hypnorum, as revealed by microsatellites
(Blackwell, 2003)Social insect colonies provide model systems for the examination of conflicts among parties with different genetic interests. As such, they have provided the best tests of inclusive fitness theory. However, much remains ... -
A colony-level response to disease control in a leaf-cutting ant
(Springer Verlag, 2002)Parasites and pathogens often impose significant costs on their hosts. This is particularly true for social organisms, where the genetic structure of groups and the accumulation of contaminated waste facilitate disease ... -
Condition-dependent expression of virulence in a trypanosome infecting bumblebees
(Blackwell, 2000)Parasite virulence affects both the temporal dynamics of host-parasite relationships and the degree to which parasites regulate host populations. If hosts can compensate for parasitism, then parasites may exhibit ... -
Expression of the mouse labial-like homeobox-containing genes, Hox 2.9 and Hox 1.6, during segementation of the hindbrain
(Company of Biologists, 1991)The sequence of a mouse Hox 2.9 cDNA clone is presented. The predicted homeodomain is similar to that of the Drosophila gene labial showing 80 % identity. The equivalent gene in the Hox 1 cluster is Hox 1.6 which shows ... -
The regulation of Krox-20 expression reveals important steps in the control of peripheral glial cell development.
(Company of Biologists, 1996)The zinc finger transcription factor gene Krox-20 is expressed in Schwann cells and is required for the myelination of peripheral nerves. We show that the regulation of Krox-20 expression in peripheral glial cells reveals ... -
Determination, diversification and multipotency of mammalian myogenic cells
(2008)In amniotes, myogenic commitment appears to be dependent upon signaling from neural tube and dorsal ectoderm, that can be replaced by members of the Wnt family and by Sonic hedgehog. Once committed, myoblasts undergo ... -
3D representation of Wnt and Frizzled gene expression patterns in the mouse embryo at embryonic day 11.5 (Ts 19).
(2008)Wnt signalling is one of the fundamental cell communication systems operating in the embryo and the collection of 19 Wnt and 10 Frizzled (Fzd) receptor genes (in mouse and human) represent just part of a complex system ... -
Mortality rates and division of labour in the leaf-cutting ant, Atta colombica
(2006)Division of labor in social groups is affected by the relative costs and benefits of conducting different tasks. However, most studies have examined the dynamics of division of labor, rather than the costs and benefits that ... -
The evolutionary significance of long copulation duration in bumble bees
(EDP Sciences, 2005)Copulation duration ? the time spent in copula ? is of particular interest in social insects. Female social insects (or queens) generally only mate during a short, initial post-emergence period, and in the absence of ... -
The impact of host starvation on parasite development and population dynamics in an intestinal trypanosome parasite of bumble bees
(Cambridge University Press, 2005)Host nutrition plays an important role in determining the development and success of parasitic infections. While studies of vertebrate hosts are accumulating, little is known about how host nutrition affects parasites of ... -
Interaction of the CNC-bZIP factor TCF11/LCR-F1/Nrf1 with MafG: binding-site selection and regulation of transcription
(1998)We have previously shown that the widely expressed human transcription factor TCF11/LCR-F1/Nrf1 interacts with small Maf proteins and binds to a subclass of AP1-sites. Such sites are required for b-globin 54 DNase I ...
