Prolactin promotes parental responses and alters reproductive axis gene expression, but not courtship behaviors, in both sexes of a biparental bird

Farrar, Victoria S.; Flores, Laura; Viernes, Rechelle; Pereira, Laura Ornelas; Mushtari, Susan; Calisi, Rebecca M.

doi:10.1016/j.yhbeh.2022.105217

Cited by 8 publications

(8 citation statements)

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“…In the same species, PRL levels increase gradually during incubation (from 4 ng/mL to approximately 11 ng/mL), peaking at hatching (around 14 ng/mL) and keeping an association with birds’ parental experience, where animals with prior experience have 50% higher PRL levels than animals without offspring (approximately 13 ng/mL vs. 8 ng/mL) ( Smiley and Adkins-Regan, 2016 ). The same increase in PRL was found in rock doves ( Columba livia ) showing care for the offspring without affecting the reproductive function of the animals ( Farrar et al, 2022 ). In the case of the zebra finch ( Taeniopygia guttata ), administration of a mesotocin receptor antagonist reduced nest building and incubation behaviors in females but not males, while an arginine-vasopressin (AVP) receptor antagonist reduced nest building in both sexes ( Klatt and Goodson, 2013 ).…”

Section: Neuroendocrine Control Of Parental Behavior In Birds (Precoc...supporting

confidence: 58%

“…Some other birds, such as the cuckoo, do not form bonds with their offspring and leave the care of their young to other birds (brood parasitism) ( Mérő et al, 2023 ). However, generally, brooding and feeding the offspring is performed under biparental care in birds ( Long et al, 2022 ), as observed in passerines ( Vanadzina et al, 2023 ), doves ( Farrar et al, 2022 ), and other non-passerine birds ( Wagner et al, 2019 ). This means that the female and male are involved in different activities before the hatching period, to increase breeding success, save energy for both parents, and enhance their performance ( Mock, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

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Parental behavior and newborn attachment in birds: life history traits and endocrine responses

et al. 2023

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In birds, parental care and attachment period differ widely depending on the species (altricial or precocial), developmental strategies, and life history traits. In most bird species, parental care can be provided by both female and male individuals and includes specific stages such as nesting, laying, and hatching. During said periods, a series of neuroendocrine responses are triggered to motivate parental care and attachment. These behaviors are vital for offspring survival, development, social bonding, intergenerational learning, reproductive success, and ultimately, the overall fitness and evolution of bird populations in a variety of environments. Thus, this review aims to describe and analyze the behavioral and endocrine systems of parental care and newborn attachment in birds during each stage of the post-hatching period.

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Section: Neuroendocrine Control Of Parental Behavior In Birds (Precoc...supporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

Parental behavior and newborn attachment in birds: life history traits and endocrine responses

et al. 2023

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“…It appears that juvenile hormone indirectly promotes parental care since it suppresses fertility in females and inhibits copulation in males to ensure that parental resources are invested exclusively in caring for the young and not in new reproductive events (Engel et al., 2016). In burying beetles, the role of the juvenile hormone seems to be analogous to the role of prolactin in vertebrates since this hormone temporarily suppresses fertility and favors the care of the young (Farrar et al., 2022).…”

Section: Discussionmentioning

confidence: 99%

“…Hormones play a fundamental role during animal reproduction, including by favoring the expression of sexual ornaments (Cox et al., 2008) or by stimulating parental care behaviors (Tschirren & Richner, 2008). For example, in vertebrates, it has been suggested that prolactin controls parental investment because it promotes parental care behaviors, such as brooding in birds (Farrar et al., 2022), feeding in mammals (Lacasse et al., 2016), and nest guarding in amphibians, fish, and birds (Riechert et al., 2014; Schulte & Summers, 2017; Whittington & Wilson, 2013). On the other hand, in arthropods, the main hormone responsible for controlling reproduction is the juvenile hormone.…”

Section: Introductionmentioning

confidence: 99%

Juvenile hormone and temperature effects in the postzygotic parental investment of male waterbug Abedus ovatus (Belostomatidae)

Argaez,

Munguía‐Steyer

2024

Ethology

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Parental investment is any expenditure of time or energy by parents that increases their offspring survival at the cost of future reproduction. The costs associated with parental investment can be reflected in a deterioration of their physiological condition. In insects, juvenile hormone has been identified as having a role in the control of parental care. However, its effects on parental investment remain unclear for many taxa, especially in species with exclusive paternal care. We evaluated whether juvenile hormone influences postzygotic parental investment in Abedus ovatus, a waterbug with exclusive paternal care. Males provide parental care by carrying eggs on their backs and ventilating them by generating water currents through push‐ups called brood pumping. In an experiment, we applied methoprene (an analog of juvenile hormone) to males at early and late parental care stages and quantified the frequency of brood pumping and the contents of energy reserves (lipids, carbohydrates, and glycogen) at the end of parental care as a measure of physiological condition. We found that methoprene increases the frequency of brood pumping only when the water temperature increases. However, there was no correlation between the parent's energy reserves and methoprene treatments. We found that males who cared for large egg pads had lower amounts of lipids and carbohydrates at the end of parental care, and both effects are greater as the water temperature increases. These results suggest that energy expenditure during parental care is high due to intense muscular activity during brood pumping, which depletes male energy reserves and could affect future reproduction.

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“…Birds are social, with varying degrees of communication complexity including the use of calls and song (in some cases communicating by visual display); they can be socially cooperative, exhibiting behaviors such as flocking and mobbing. Most birds also provide an extended period of parental care that is often shared between parents and/or with other birds [4][5][6].…”

Section: Avian Biology and Its Importancementioning

confidence: 99%

A Bird’s-Eye View of Chromosomic Evolution in the Class Aves

O’Connor,

Kretschmer,

Romanov

et al. 2024

Cells

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Birds (Aves) are the most speciose of terrestrial vertebrates, displaying Class-specific characteristics yet incredible external phenotypic diversity. Critical to agriculture and as model organisms, birds have adapted to many habitats. The only extant examples of dinosaurs, birds emerged ~150 mya and >10% are currently threatened with extinction. This review is a comprehensive overview of avian genome (“chromosomic”) organization research based mostly on chromosome painting and BAC-based studies. We discuss traditional and contemporary tools for reliably generating chromosome-level assemblies and analyzing multiple species at a higher resolution and wider phylogenetic distance than previously possible. These results permit more detailed investigations into inter- and intrachromosomal rearrangements, providing unique insights into evolution and speciation mechanisms. The ‘signature’ avian karyotype likely arose ~250 mya and remained largely unchanged in most groups including extinct dinosaurs. Exceptions include Psittaciformes, Falconiformes, Caprimulgiformes, Cuculiformes, Suliformes, occasional Passeriformes, Ciconiiformes, and Pelecaniformes. The reasons for this remarkable conservation may be the greater diploid chromosome number generating variation (the driver of natural selection) through a greater possible combination of gametes and/or an increase in recombination rate. A deeper understanding of avian genomic structure permits the exploration of fundamental biological questions pertaining to the role of evolutionary breakpoint regions and homologous synteny blocks.

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Prolactin promotes parental responses and alters reproductive axis gene expression, but not courtship behaviors, in both sexes of a biparental bird

Cited by 8 publications

References 100 publications

Parental behavior and newborn attachment in birds: life history traits and endocrine responses

Parental behavior and newborn attachment in birds: life history traits and endocrine responses

Juvenile hormone and temperature effects in the postzygotic parental investment of male waterbug Abedus ovatus (Belostomatidae)

A Bird’s-Eye View of Chromosomic Evolution in the Class Aves

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