Physical and Physiological Costs of Reproduction in Watersnakes

Chamberlain, Jeremy D.; Gifford, Matthew E.

doi:10.1643/cp-15-347

Cited by 6 publications

(2 citation statements)

References 29 publications

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“…Sexually reproducing organisms are faced with a fundamental decisionhow to allocate valuable resources optimally when investment in current reproduction can come at the expense of future fitness. This life-history trade-off is called the 'cost of reproduction' (Stearns, 1992;Williams, 1966), and occurs across taxa including humans (Lycett et al, 2000), other mammals (Speakman, 2008), birds (Descamps et al, 2009), fish (van den Berghe, 1992), snakes (Chamberlain and Gifford, 2016), insects (Kotiaho and Simmons, 2003;Salmon et al, 2001) and plants (Obeso, 2002). Although theory suggests that individuals investing more heavily in their current breeding attempt should incur the largest cost of reproduction via reduced subsequent survival or reproductive success, this has not always been supported empirically.…”

Section: Introductionmentioning

confidence: 99%

No short-term physiological costs of offspring care in a cooperatively breeding bird

Guindre‐Parker

Rubenstein

2018

Journal of Experimental Biology

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The cost of reproduction results in a life-history trade-off where investment in current reproduction via costly parental care decreases subsequent fitness. Although this trade-off is thought to occur ubiquitously across animals, there is equivocal evidence that parental care behaviours are costly. A major challenge of studying the cost of parental care has been a lack of consensus over which physiological mechanisms underlie this trade-off. Here, we compare four traits believed to mediate the cost of parental care by examining whether glucocorticoids, oxidative stress, immune function or body condition represent a cost of performing offspring care and shape subsequent fitness. We use a 4 year dataset collected in free-living cooperatively breeding superb starlings (), a species in which parental and alloparental care effort varies widely among individuals and across years. Our results showed that within-individual change in physiology was unrelated to investment in offspring care, and physiological state during chick rearing did not predict the likelihood that an individual would breed in subsequent seasons. Instead, individuals that had elevated baseline corticosterone during incubation performed more nest guarding, suggesting that this hormone may play a preparatory role for investing in offspring care. Together, our results indicate that superb starlings modify their investment in offspring care according to their physiological state during incubation, despite there being no evidence of a short-term physiological cost of parental or alloparental care. Thus, breeding cooperatively appears to provide individuals with the flexibility to adjust their investment in offspring care and overcome any potential costs of reproduction.

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Section: Introductionmentioning

confidence: 99%

No short-term physiological costs of offspring care in a cooperatively breeding bird

Guindre‐Parker

Rubenstein

2018

Journal of Experimental Biology

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“…When adequate food is available, sexually mature abalones should prefer strategic options for rapid food acquisition in order to avoid losing energy while searching and competing for food resources, compared with immature abalones. It has been reported that physical and physiological factors may cause a decline in movement endurance during the reproductive stage of animals (Chamberlain & Gifford 2016). The movement endurance of side-blotched lizards (Uta stansburiana) is easily recovered within a few hours of spawning (Miles et al 2000).…”

Section: Discussionmentioning

confidence: 99%

Reproduction strategy of nocturnal marine molluscs: running for love

et al. 2023

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The cost of reproduction is the core driver of life history evolution in animals. This paper demonstrates that the cumulative distance moved and the duration of movement of sexually immature abalones, Haliotis discus hannai, kept in various male and female groups, were significantly higher than those of sexually mature individuals, except when kept in mixed cultures of mature males and females. After mixed‐culture, sexually mature males moved significantly further and for a longer duration than mature female abalones, and even more so than mature male abalones of any other group. Examination of the LC‐MS metabolomics of mature males cultured with sexually mature females (AM) and those cultured with sexually immature females (JM) showed that cyclic adenosine monophosphate (cAMP) acted as a differential metabolic biomarker. After 24‐h uninterrupted sampling, the concentration of 5‐HT and the expression levels of the 5‐HT2 and 5‐HT6 receptors in AM were significantly higher than those in JM. After further injection of 5‐HT2 and 5‐HT6 receptor antagonists, the concentrations of cAMP and PKA rose again, but the cumulative movement duration and distance of male abalones decreased significantly, showing that 5‐HT was involved in the regulation of movement behavior of male abalones through the 5‐HT2 and 5‐HT6 receptor‐activated cAMP‐PKA pathways. The results demonstrated a significant increase in the movement endurance of mature male abalones cultured with mature females, providing a theoretical basis for understanding the adaptive life history strategies of abalones and suggesting ways to protect diverse benthic resources for abalones during the reproductive stage.

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Reproduction affects locomotor behaviour and muscle physiology in the sea cucumber, Apostichopus japonicus

Zhang

Liu

et al. 2017

Animal Behaviour

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Physical and Physiological Costs of Reproduction in Watersnakes

Cited by 6 publications

References 29 publications

No short-term physiological costs of offspring care in a cooperatively breeding bird

No short-term physiological costs of offspring care in a cooperatively breeding bird

Reproduction strategy of nocturnal marine molluscs: running for love

Reproduction affects locomotor behaviour and muscle physiology in the sea cucumber, Apostichopus japonicus

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