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Keywords: reproduction
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Journal Articles
J Exp Biol jeb.244820.
Published: 30 November 2022
...Victoria S. Farrar; Jaime Morales Gallardo; Rebecca M. Calisi Rodríguez In the face of challenges, animals must balance investments in reproductive effort versus their own survival. Physiologically, this tradeoff may be mediated by glucocorticoid release by the hypothalamic-pituitary-adrenal (HPA...
Journal Articles
J Exp Biol (2022) 225 (11): jeb243742.
Published: 10 June 2022
...Tipsuda Thongbuakaew; Sirirak Mukem; Arada Chaiyamoon; Kanjana Khornchatri; Thanapong Kruangkum; Scott F. Cummins; Prasert Sobhon ABSTRACT Pyrokinins (PKs) are neuropeptides that have been found to regulate a variety of physiological activities including reproduction in various insect...
Includes: Supplementary data
Journal Articles
J Exp Biol (2022) 225 (3): jeb239004.
Published: 28 January 2022
... of endogenous rhythms). Restricted food availability times may, for example, constrain reproductive output by limiting the number or quality of offspring or the number of reproductive attempts, as has been observed for nesting frequency in birds. Consuming food at the wrong time of day reduces the reproductive...
Journal Articles
J Exp Biol (2021) 224 (24): jeb242996.
Published: 23 December 2021
...Neelu Anand Jha; S. K. Tahajjul Taufique; Vinod Kumar ABSTRACT We investigated the consequence of no-night environment (constant light, LL) on reproductive performance in zebra finches in the parent (P) and subsequent (F1) generation. As a measure of the overall effects on metabolic reproductive...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (19): jeb242792.
Published: 8 October 2021
... latitudes typically display annual cyclicity in their reproductive activity: births are synchronized when environmental conditions are most favorable. In a majority of these species, day length is the main proximate factor used to anticipate seasonal changes and to adapt physiology. The brain integrates...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (10): jeb241588.
Published: 24 May 2021
... in the gonads in the first stages of gametogenesis, while the Cragi-CCAP precursor is upregulated in the VG in the last stages of gametogenesis. This suggests a role of the CCAP signaling system in the regulation of reproductive processes. A role in water and ionic regulation is also supported considering...
Journal Articles
J Exp Biol (2021) 224 (8): jeb235820.
Published: 26 April 2021
... involved. However, for the most part, evidence for costs of increased foraging and/or reproductive effort is weak. Furthermore, despite some experimental evidence demonstrating negative effects of increased foraging and parental effort, the physiological mechanisms underlying costs associated with high...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (8): jeb235846.
Published: 26 April 2021
...Kang Nian Yap; Donald R. Powers; Melissa L. Vermette; Olivia Hsin-I. Tsai; Tony D. Williams ABSTRACT Free-living animals often engage in behaviour that involves high rates of workload and results in high daily energy expenditure (DEE), such as reproduction. However, the evidence for elevated DEE...
Includes: Supplementary data
Journal Articles
J Exp Biol (2021) 224 (2): jeb219543.
Published: 26 January 2021
... and reproductive issues. This study investigated relationships between estimated body composition and metabolic function, inflammatory markers, ovarian activity (females only) and physical activity levels in 44 Asian elephants ( n =35 females, n =9 males). Deuterium dilution was used to measure total body water...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (23): jeb237255.
Published: 11 December 2020
... on the survival and reproductive function of H. graminicola . Our study thus provides clear evidence that low plasticity with fast development to a certain size means a high nutritional requirement for protein at a cost of lower survival and prolonged time to egg laying when prey have low protein-to-lipid content...
Includes: Supplementary data
Journal Articles
In collection:
Neuroethology
J Exp Biol (2020) 223 (17): jeb207324.
Published: 6 September 2020
... of birds and alligators . Curr. Biol.   28 , 686 - 696.e6 . 10.1016/j.cub.2018.01.036 Burdfield-Steel , E. R. and Shuker , D. M . ( 2011 ). Reproductive interference . Curr. Biol.   21 , R450 - R451 . 10.1016/j.cub.2011.03.063 Caspers , B. A. , Schroeder , F. C...
Journal Articles
J Exp Biol (2020) 223 (9): jeb212050.
Published: 7 May 2020
... into the reproductive physiology of polyploid fishes, underlining the role of apoptosis during spermatogenesis. Caspase-3 Cobitis taenia Reproduction Gonad maturation Cobitis taxa are small-sized, bottom-dwelling fishes indigenous to Europe and Asia and are considered an important model to study...
Journal Articles
J Exp Biol (2020) 223 (9): jeb218768.
Published: 4 May 2020
... size and mass, lipid content in the fat body, cold tolerance and expression of genes related to cold tolerance, metabolism and stress throughout colony development. We found that bumble bee worker physiology and gene expression patterns shift from reproductive-like to diapause-like as the colony ages...
Includes: Supplementary data
Journal Articles
J Exp Biol (2020) 223 (6): jeb217687.
Published: 25 March 2020
... the ambient photoperiod. The objective of this study was to characterize the effects of photoperiodic variation on metabolic and reproductive traits, and the related changes in pituitary–hypothalamic gene expression in MSM mice. MSM mice were kept in long (LP) or short photoperiod (SP) for 6 weeks. Our...
Journal Articles
J Exp Biol (2020) 223 (6): jeb219238.
Published: 19 March 2020
... egg layers and workers, which specialize in non-reproductive tasks inside and outside their nest. For instance, reproductives are more resistant to starvation, and changes in fat content have been associated with the transition from inside to outside work or reproductive activities. However, most...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (17): jeb201467.
Published: 9 September 2019
... manipulations show that pied flycatchers do not adjust the timing of their moult and migration to the termination of breeding. European pied flycatcher Ficedula hypoleuca Climate change Migration Moult Reproduction Organisms living in seasonal environments, such as temperate zones...
Includes: Supplementary data
Journal Articles
J Exp Biol (2019) 222 (13): jeb194688.
Published: 2 July 2019
... the mechanistic basis of fitness costs. Fourth, I propose the ‘redox signalling hypothesis’ of life history to complement the current ‘oxidative stress hypothesis’ of life history. The latter states that oxidative damage underlies trade-offs because it affects traits like growth, reproduction or cell senescence...
Journal Articles
J Exp Biol (2019) 222 (7): jeb196667.
Published: 3 April 2019
...Ila Mishra; Vinod Kumar ABSTRACT An abundant food supply is crucial to reproductive performance, as shown by restricted food availability experiments, in small-sized vertebrates including birds. However, whether daily feeding times affect reproduction is largely unknown. The present study...
Journal Articles
J Exp Biol (2018) 221 (18): jeb185058.
Published: 27 September 2018
...Heather E. Watts; Daniela Jimenez; Veronica Pacheco; Tauras P. Vilgalys ABSTRACT Temperature-correlated shifts in reproductive timing are now well documented in numerous bird species. However, whether temperature directly influences reproductive timing or whether its effects are mediated...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (17): jeb180869.
Published: 10 September 2018
...Mikus Abolins-Abols; Rachel E. Hanauer; Kimberly A. Rosvall; Mark P. Peterson; Ellen D. Ketterson ABSTRACT Organisms are expected to invest less in reproduction in response to a stressor, but theory predicts that this effect should depend on the frequency and duration of stressors...
Includes: Supplementary data