The Influence of Prenatal Auditory Input on Newborn Vocalizations

Published: Jan. 1, 2025

Language: Английский

---

Exposure to calls before hatching affects the post-hatching behaviour of domestic chickens

Royal Society Open Science, Journal Year: 2024, Volume and Issue: 11(8)

Published: Aug. 1, 2024

The soundscape experienced by animals early in life can affect their behaviour later life. For birds, sounds the egg influence how individuals learn to respond specific calls post-hatching. However, acoustic experiences subsequent social remains unknown. Here, we investigate exposure maternal ‘cluck’ pre-hatching affects of domestic chickens ( Gallus gallus domesticus ) at 3–5 days and 17–21 old. We incubated eggs played cluck half them. After hatching, raised chicks small groups occupying different enclosures. At old, tested chicks’ responses three stimuli: (i) background sound, (ii) chick (iii) calls. found that experience reduced likelihood moving response all stimuli. some explored beyond own enclosure ‘visited’ other groups. Chicks exposed before hatching were times more likely enter another group’s than control chicks, this was unaffected connectedness. Our results indicate age- context-dependent cluck-call playbacks, with potential long-term effects on individual behaviour.

Language: Английский

---

Assessment and the regulation of adaptive phenotypic plasticity

Development, Journal Year: 2024, Volume and Issue: 151(20)

Published: Oct. 15, 2024

ABSTRACT Organisms can react to environmental variation by altering their phenotype, and such phenotypic plasticity is often adaptive. This contributes the diversity of phenotypes across tree life. Generally, production these must be preceded assessment, where individual acquires information about its environment phenotype relative that environment, then determines if how respond with an alternative phenotype. The role assessment in adaptive is, therefore, crucial. In this Review, we (1) highlight need for explicitly considering plasticity; (2) present two different models facultative are related; (3) describe overarching framework evolves. doing so, articulate avenues future work suggest evolution key explaining when occurs. Moreover, emphasize understand versus maladaptive plasticity, which issue will become increasingly important a rapidly changing world.

Language: Английский

---

Diversity drives discovery in developmental plasticity

Journal of Experimental Biology, Journal Year: 2024, Volume and Issue: 227(Suppl_1)

Published: March 7, 2024

Understanding the effects of environment on animal physiology and biomechanics is at core Journal Experimental Biology. Environmental factors such as temperature, food availability, sound or presence predators can profoundly shape how an grows matures into adult. In this Special Issue, we take a close look developmental plasticity, which influence conditions experienced during early development animal's phenotype. her classic book 20 years ago, 'Developmental Plasticity Evolution', Mary Jane West-Eberhard proposed that 'alternative phenotypes' arise in organisms under different life play critical role moulding evolution diversification (West-Eberhard, 2003). The ensuing have seen increasing attention plasticity may contribute to evolution. Given this, coupled with explosion new information epigenetic mechanisms underlying growing number submissions JEB area, fact earlier special issue 'Phenotypic Plasticity' (Hoppeler et al., 2006) now 18 old, time seemed right for plasticity. current issue, capitalized diversity models study, from worms dung beetles lizards mice, assemble strong comparative approach topic. We also aimed bring together researchers considering diverse angles, molecular cellular biology whole physiology, ecology evolution, more fully understand integrate approaches research findings.Developmental defined by rearing environment, nutrition social conditions, provides developing animals use maturation process resultant adult behaviour physiology. Such context-dependent often considered be both widespread adaptive, although extent case remains unclear (Sánchez-Tójar 2020). It important recognize resource limitations exposure environmental contaminants result damaged phenotypes are clearly not adaptive. Metcalfe (2024) discusses third possibility – variation need always obvious changes, but alter trajectories ways nuanced consequences over longer periods time. Other articles Issue focus identifying serve cues adjustments, these, turn, transduced within animal. For example, transmission mediated parental (e.g. Mariette, 2024) indirectly via provisioning egg. Hotter temperatures, scarcity stress predators) parent provide anticipatory prepare them similar stressors later life. Food availability nutrition, particular, appears fundamental importance trajectory, point where ask whether it 'master' regulator development. involved nutritional critically area future research.Signals about phenotypic changes neuroendocrine, pathways, characterizing these proximate likewise constitutes active research. recognition played determining genomic DNA expressed has opened door deeper understanding enabled. Although much learned, methylation, histone acetylation non-coding RNAs microRNAs all been implicated adjustment growth differentiation. Indeed, possible involvement same mediating responses disparate raises questions there 'generalized' underpin aspects Potticary Duckworth, 2020).Understanding requires good model species something experimental biologists familiar Krogh principle (Krogh, 1929). From perspective, Caenorhabditis elegans particularly useful studies because fate every cell organism mapped (Jarriault Gally, 2024). At time, identification specific markers associated allows investigated across broad range and/or factors. reason, conservation context, example ecological evolutionary history wild populations.Developmental product natural selection, allowing respond adaptively altering their morphology, behaviour. However, processes generating differ ability survive reproduce given environment. was thesis, i.e. adaptive shaping visible including emergence novel trait variants, formed basis West-Eberhard's influential book. Twenty later, through environmentally induced arise, Uller al. opportunity revisit seminal publication tested biology.At least three themes emerge collection reviews Issue. First, still identify matter well transmitted Second, learn transduce signals changes. Finally, clear cause exact innovation remain elucidated. hope readers will find stimulating ideas physiologists those studying papers think mechanism helps phenotype responds More generally, significance increasingly urgent, taxa confronting change pace faster than ever before history.Neil Armin Moczek thanked helpful comments.

Language: Английский

---

Postnatal hearing development limits early parent-to-offspring vocal communication and gates sensorimotor learning in the zebra finch

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: May 6, 2024

ABSTRACT Hearing is critical for vocal communication, and in birds its onset linked to egg hatching. develops after hatching early (altricial) species, while already functional the later (precocial) species. Recent work suggests that altricial zebra finches exhibit parent-to-embryo acoustic requiring functional, high-frequency hearing egg. Yet, postnatal development of their auditory sensitivity remains unknown. By measuring vibration-detection capacity during finches, we show finch hatchlings are deaf even loud, broadband sounds. Auditory nerve gradually a low-to-high frequency manner. responses adult-like properties only 20 days from Our data provide evidence against plausibility parent-to-offspring communication suggest functionality may set learning finches.

Language: Английский

---

Prenatal Acoustic Signals Influence Nestling Heat Shock Protein Response to Heat and Heterophil-to-Lymphocyte Ratio in a Desert Bird

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(22), P. 12194 - 12194

Published: Nov. 13, 2024

Heat shock proteins (HSPs) are essential to cellular protection against heat stress. However, the causes of inter-individual variation in HSP regulation remain unclear. This study aimed test impact early-life conditions on response zebra finches. In this arid-adapted bird, incubating parents emit “heat-calls” at high temperatures, which adaptively alter offspring’s phenotypes. Embryos were exposed heat-calls or control-calls, and 13 days post-hatch nestlings separated into two different experiments responses either chronic nest temperature (“in-nest” experiment) an acute “heat-challenge”. Blood samples collected measure levels cognate 70, protein 90α, corticosterone heterophil-to-lymphocyte (H/L) ratio. in-nest experiment, both HSPs upregulated increasing temperatures only control-calls (HSC70: p = 0.010, HSP90α: 0.050), also had a marginally higher H/L ratio overall than heat-call birds (p 0.066). These results point sensitivity control-call nestlings. Furthermore, comparing across experiments, differed, being heat-challenged 0.009). Overall, shows for first time that prenatal acoustic signal affects nestling postnatal temperature.

Language: Английский

---

Maternal in‐nest call structure reduces habituation risk in songbird embryos

Journal of Avian Biology, Journal Year: 2024, Volume and Issue: unknown

Published: July 16, 2024

Repetition of the same vocal stimulus during learning may result in habituation. Therefore, selection favor tutors that produce stimuli with characteristics reduce risk Superb fairywren Malurus cyaneus mothers a two‐element (A and signature B) call to embryos, but embryos only one element type (B) after hatching. Why do use A embryos? We broadcast calls or two (AB) types measured embryo response. Embryos habituated remained responsive both. conclude signal guide retain pupil attention learning.

Language: Английский

---