Essays about: "brood patch"

Found 4 essays containing the words brood patch.

  1. 1. Cold-induced vasodilation in the brood patch of Zebra finches (Taeniopygia guttata)

    University essay from Institutionen för fysik, kemi och biologi

    Author : Sofia Klubb; [2010]
    Keywords : Brood patch; broody; cold-induced vasodilation; mechanism; non-broody; Zebra finch;

    Abstract : The development of the avian embryo is dependent of heat provisioning from the parents. To increase the heat transfer to a cooled egg the Zebra finch females develop a brood patch. Mild cooling generally constricts the blood vessels but the Arterio-venous anastomoses (AVA) in the brood patch in birds dilate. READ MORE

  3. 2. TRP channels and regulation of blood flow in the brood patch of Zebra finches (Taeniopygia guttata)

    University essay from Institutionen för fysik, kemi och biologi

    Author : Malin Silverå Ejenby; [2010]
    Keywords : 4α-PDD; Brood patch; Carvacrol; TRPV3; TRPV4; Zebra finch;

    Abstract : During the breeding season Zebra finch, Taeniopygia guttata, females develops a brood patch on the ventral surface which facilitates heat exchange between the incubating bird and the egg. The brood patch has to be sensitive to changes in temperature, so that the eggs can be kept at an optimal temperature for embryo development. READ MORE

  4. 3. Vasodilatory effects of exogenous nitric oxide on the brood patch of the Zebra finch (Taeniopygia guttata)

    University essay from Institutionen för fysik, kemi och biologi

    Author : Anna Södergren; [2010]
    Keywords : Arteriovenous anastomoses; AVA; brood patch; cold induced vasodilation; CIVD; nitric oxide; NO; temperature; vasodilation; Zebra finch; Taeniopygia guttata;

    Abstract : In birds like the Zebra finch (Taeniopygia guttata) the female, but not the male develop a brood patch upon incubation of eggs. The brood patch functions to increase heat exchange between the bird and the eggs. Development of the brood patch includes de-feathering, increased vascularization and edema formation. READ MORE

  5. 4. The expression of thermoTRP channels in the brood patch of jungle fowl (Gallus gallus) during egg incubation

    University essay from Institutionen för fysik, kemi och biologi

    Author : Shadi Jafari; [2009]
    Keywords : Brood patch; broody; jungle fowl; skin; thermoTRP;

    Abstract :   The regulation of egg temperature requires the transfer of heat from the brood patch. Thus, the brood patch needs the presence of thermo receptors as well as an appropriate vasomotor response. During the incubation an exact detection of the egg’s temperature is essential. READ MORE