Nest provisioning and diet of nestling yellow‐rumped tinkerbird Pogoniulus bilineatus

2021 ◽  
Author(s):  
Sifiso M. Lukhele ◽  
Craig D. Widdows ◽  
Alexander N. G. Kirschel
Keyword(s):  
Nest Provisioning

scholarly journals Enzymatic antioxidants but not baseline glucocorticoids mediate the reproduction–survival trade-off in a wild bird

2018 ◽  
Vol 285 (1892) ◽  
pp. 20182141 ◽  
Author(s):  
Stefania Casagrande ◽  
Michaela Hau
Keyword(s):  
Life History ◽  
Body Condition ◽  
Redox State ◽  
Reproductive Investment ◽  
Redox System ◽  
Reactive Oxygen Metabolites ◽  
Enzymatic Antioxidants ◽  
Trade Off ◽  
Trade Offs ◽  
Nest Provisioning

The trade-off between reproductive investment and survival is central to life-history theory, but the relative importance and the complex interactions among the physiological mechanisms mediating it are still debated. Here we experimentally tested whether baseline glucocorticoid hormones, the redox system or their interaction mediate reproductive investment–survival trade-offs in wild great tits ( Parus major ). We increased the workload of parental males by clipping three feathers on each wing, and 5 days later determined effects on baseline corticosterone concentrations (Cort), redox state (reactive oxygen metabolites, protein carbonyls, glutathione peroxidase [GPx], total non-enzymatic antioxidants), body mass, body condition, reproductive success and survival. Feather-clipping did not affect fledgling numbers, chick body condition, nest provisioning rates or survival compared with controls. However, feather-clipped males lost mass and increased both Cort and GPx concentrations. Within feather-clipped individuals, GPx increases were positively associated with reproductive investment (i.e. male nest provisioning). Furthermore, within all individuals, males that increased GPx suffered reduced survival rates. Baseline Cort increases were related to mass loss but not to redox state, nest provisioning or male survival. Our findings provide experimental evidence that changes in the redox system are associated with the trade-off between reproductive investment and survival, while baseline Cort may support this trade-off indirectly through a link with body condition. These results also emphasize that plastic changes in individuals, rather than static levels of physiological signals, may mediate life-history trade-offs.

NEST PROVISIONING IN THE MUD-DAUBER WASP SCELIPHRON LAETUM (F. SMITH): BODY MASS AND TAXA SPECIFIC PREY SELECTION

Behaviour ◽  
1999 ◽  
Vol 136 (2) ◽  
pp. 147-159 ◽  
Author(s):  
Matthew Jebb ◽  
Mark Elgar
Keyword(s):  
Field Experiment ◽  
Papua New Guinea ◽  
Body Mass ◽  
Prey Selection ◽  
Larval Instar ◽  
New Guinea ◽  
Spider Species ◽  
Volumetric Capacity ◽  
The Mean ◽  
Nest Provisioning

AbstractThe mud dauber wasp Sceliphron laetum (F. Smith) lays a single egg in a mud chamber that is provisioned almost exclusively with orb-weaving spiders. In Madang, Papua New Guinea, the wasps provision their chambers with between three and nine spiders that weigh between 0.01 and 0.28 g and are from at least twelve species. The number of spiders placed in each chamber is negatively correlated with the mean mass of each spider. A field experiment revealed that females cease provisioning after capturing a certain mass of spiders, rather than simply filling each chamber to its volumetric capacity. Furthermore, the wasps select different spider species according to the provisioning sequence. In general, wasps avoid provisioning the early larval instar with species of Gasteracantha, perhaps because the newly emerged wasp larvae cannot penetrate the hard integuments of these spiders.

scholarly journals Female in-nest attendance predicts the number of ectoparasites in Darwin's finch species

2021 ◽  
Vol 288 (1965) ◽  
Author(s):  
Sonia Kleindorfer ◽  
Lauren K. Common ◽  
Jody A. O'Connor ◽  
Jefferson Garcia-Loor ◽  
Andrew C. Katsis ◽  
...  
Keyword(s):  
Parental Care ◽  
Investment Decisions ◽  
Food Delivery ◽  
Nest Attendance ◽  
Nest Provisioning ◽  
Selection For ◽  
Female Behaviour ◽  
Mortality Causes ◽  
The Relationship ◽  
Do So

Selection should act on parental care and favour parental investment decisions that optimize the number of offspring produced. Such predictions have been robustly tested in predation risk contexts, but less is known about alternative functions of parental care under conditions of parasitism. The avian vampire fly ( Philornis downsi ) is a myasis-causing ectoparasite accidentally introduced to the Galápagos Islands, and one of the major mortality causes in Darwin's finch nests. With an 11-year dataset spanning 21 years, we examine the relationship between parental care behaviours and number of fly larvae and pupae in Darwin's finch nests. We do so across three host species ( Camarhynchus parvulus , C. pauper , Geospiza fuliginosa ) and one hybrid Camarhynchus group. Nests with longer female brooding duration (minutes per hour spent sitting on hatchlings to provide warmth) had fewer parasites, and this effect depended on male food delivery to chicks. Neither male age nor number of nest provisioning visits were directly associated with number of parasites. While the causal mechanisms remain unknown, we provide the first empirical study showing that female brooding duration is negatively related to the number of ectoparasites in nests. We predict selection for coordinated host male and female behaviour to reduce gaps in nest attendance, especially under conditions of novel and introduced ectoparasites.

Notes from Wood Thrush (Hylocichla mustelina) telemetry: Synchronous tail replacement in prebasic molt and single-male nest provisioning

2021 ◽  
Vol 132 (2) ◽  
Author(s):  
Vitek Jirinec ◽  
Chris J. Smith ◽  
Akshay Deverakonda ◽  
Matthias Leu
Keyword(s):  
Hylocichla Mustelina ◽  
Wood Thrush ◽  
Single Male ◽  
Nest Provisioning

The nest provisioning behavior of the waspCerceris fumipennis 

2016 ◽  
Author(s):  
Ellie McCabe
Keyword(s):  
Provisioning Behavior ◽  
Nest Provisioning

Brood parasitism disproportionately increases nest provisioning and helper recruitment in a cooperatively breeding bird

2011 ◽  
Vol 65 (12) ◽  
pp. 2279-2286 ◽  
Author(s):  
Cynthia A. Ursino ◽  
María C. De Mársico ◽  
Mariela Sued ◽  
Andrés Farall ◽  
Juan C. Reboreda
Keyword(s):  
Brood Parasitism ◽  
Breeding Bird ◽  
Cooperatively Breeding ◽  
Nest Provisioning

Nest provisioning and a possible cost of reproduction in the megachilid beeOsmia rufastudied by a new observation method

2002 ◽  
Vol 14 (3) ◽  
pp. 255-268 ◽  
Author(s):  
E. Strohm ◽  
H. Daniels ◽  
C. Warmers ◽  
C. Stoll
Keyword(s):  
Cost Of Reproduction ◽  
Nest Provisioning ◽  
Observation Method

Effects of selection harvesting on bark invertebrates and nest provisioning rate in an old forest specialist, the brown creeper (Certhia americana)

Ecoscience ◽  
2012 ◽  
Vol 19 (2) ◽  
pp. 106-112 ◽  
Author(s):  
Émilie D'Astous ◽  
Marc-André Villard
Keyword(s):  
Provisioning Rate ◽  
Nest Provisioning ◽  
Selection Harvesting ◽  
Brown Creeper

Nesting and Nest-Provisioning of the Red-throated Caracara (Ibycter americanus) in Central French Guiana

2010 ◽  
Vol 44 (3) ◽  
pp. 236-240 ◽  
Author(s):  
Sean McCann ◽  
Onour Moeri ◽  
Tanya Jones ◽  
Sean O'Donnell ◽  
Gerhard Gries
Keyword(s):  
French Guiana ◽  
Nest Provisioning
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