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Keywords: reproduction
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Journal Articles
J Exp Biol (2021) 224 (19): jeb242792.
Published: 08 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
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Neuroethology
J Exp Biol (2020) 223 (17): jeb207324.
Published: 06 September 2020
... Reproduction Evolution Neural substrates Few decisions in life are more consequential for individual fitness than choosing a mate. Mate choice (see Glossary) is the result of selectively mating with only some individuals of the opposite sex, whose members compete for fertilization opportunities...
Journal Articles
J Exp Biol (2020) 223 (9): jeb212050.
Published: 07 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: 04 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: 09 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: 02 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: 03 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
Journal Articles
J Exp Biol (2018) 221 (7): jeb177469.
Published: 06 April 2018
... the bioenergetic differences between active and inactive individuals carry over to impact performance in a subsequent reproductive event and alter a female's reproductive outcome. Female mice that had access to a running wheel for a month before mating gave birth to a larger litter and weaned a heavier litter...
Includes: Supplementary data
Journal Articles
J Exp Biol (2018) 221 (4): jeb171595.
Published: 27 February 2018
.... ( 2002 ). Modern Applied Statistics with S, 4th edn . New York : Springer . Visser , M. E. , Van Noordwijk , A. J. , Tinbergen , J. M. and Lessells , C. M. ( 1998 ). Warmer springs lead to mistimed reproduction in great tits (Parus major) . Proc. Roy. Soc. B.   265 , 1867...
Journal Articles
J Exp Biol (2018) 221 (1): jeb168559.
Published: 11 January 2018
...Meng Zhao; Theodore Garland, Jr; Mark A. Chappell; Jacob R. Andrew; Breanna N. Harris; Wendy Saltzman ABSTRACT Reproduction strongly influences metabolism, morphology and behavior in female mammals. In species in which males provide parental care, reproduction might have similar effects on fathers...
Journal Articles
J Exp Biol (2017) 220 (21): 3988–3996.
Published: 01 November 2017
... development in Crassostrea gigas . Biochem. Biophys. Res. Com.   320 , 592 - 598 . 10.1016/j.bbrc.2004.06.009 Fabioux , C. , Huvet , A. , Le Souchu , P. , Le Pennec , M. and Pouvreau , S. ( 2005 ). Temperature and photoperiod drive Crassostrea gigas reproductive internal clock...
Includes: Supplementary data