Hatchling vocalizations and beneficial social interactions in subterranean nests of a widespread reptile

Lacroix, Claudia; Davy, Christina M.; Rollinson, Njal

doi:10.1016/j.anbehav.2022.03.006

Cited by 6 publications

(6 citation statements)

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“…ref. 31 , 32 , and the data provided by us in this paper), are key in revealing the common ancestry of such behaviour. In fact, including evidence from only 14 species (12 turtles, tuatara and lungfish) to the analysis proposed by Chen & Wiens 4 was enough to recover opposite results, that were reinforced by the inclusion of data from our critical study of the literature.…”

Section: Discussionmentioning

confidence: 57%

Common evolutionary origin of acoustic communication in choanate vertebrates

et al. 2022

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Acoustic communication, broadly distributed along the vertebrate phylogeny, plays a fundamental role in parental care, mate attraction and various other behaviours. Despite its importance, comparatively less is known about the evolutionary roots of acoustic communication. Phylogenetic comparative analyses can provide insights into the deep time evolutionary origin of acoustic communication, but they are often plagued by missing data from key species. Here we present evidence for 53 species of four major clades (turtles, tuatara, caecilian and lungfish) in the form of vocal recordings and contextual behavioural information accompanying sound production. This and a broad literature-based dataset evidence acoustic abilities in several groups previously considered non-vocal. Critically, phylogenetic analyses encompassing 1800 species of choanate vertebrates reconstructs acoustic communication as a homologous trait, and suggests that it is at least as old as the last common ancestor of all choanate vertebrates, that lived approx. 407 million years before present.

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Section: Discussionmentioning

confidence: 57%

Common evolutionary origin of acoustic communication in choanate vertebrates

et al. 2022

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“…Hatching synchrony was not exhibited by C. oblonga . While hatching synchrony has been observed in several species of freshwater turtles (Burger, 1976; Doody et al, 2001; Lacroix et al, 2022; McGlashan et al, 2012; Spencer et al, 2001), reports of asynchronous hatching were found in only one other species (Riley et al, 2020). Synchronous hatching is suggested to facilitate synchronous emergence from the nest (Spencer et al, 2001; Tucker et al, 2008) and likely occurs when an environmental cue signals favourable conditions for hatching and emergence (Doody, 2011; Doody et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Climate change affects the early‐life history of a freshwater turtle in a severely drying region

Santoro,

Chambers,

Ebner

et al. 2023

Austral Ecology

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Freshwater turtles are one of the most threatened vertebrate groups. Climate change is a major threat to these species, with impacts affecting all life‐history stages. There is currently a limited understanding of how changes in climate may alter the environmental triggers for hatching and emergence from the nests of freshwater turtle hatchlings. This precludes making predictions about how climate change may impact freshwater turtle recruitment success. The southwestern snake‐necked turtle (Chelodina oblonga) is endemic to south‐western Australia, a global biodiversity hotspot that has undergone severe climatic drying. Recruitment failure is thought to be occurring in many populations of the species. However, there is little understanding as to how environmental change may be influencing recruitment. This study aimed to: (1) determine the incubation duration and hatching and hatchling emergence success of C. oblonga, (2) determine if the species exhibits hatching or emergence synchrony and/or delayed emergence and (3) quantify the effects of temperature and rainfall on hatchling emergence. Using this information, the study assesses how climatic drying and warming may be impacting C. oblonga's early life‐history. Between 2018 and 2020 nest sites were monitored around a large urban wetland with weekly assessments of egg and hatchling status. Incubation duration and hatching and hatchling emergence success were calculated, and generalized linear models were built to determine how temperature and/or rainfall predicted emergence. Hatchlings either emerged shortly after hatching or overwintered in the nest, and both hatching and emergence were asynchronous. Both emergence periods were positively associated with temperature and rainfall. This study reveals that incubation duration, hatching success, hatchling emergence and survival are all likely to be impacted by recent and projected climate change, and especially drying. Warming and drying are predicted for many temperate regions globally, and it is therefore important that their impacts on the early life history of freshwater turtles be better understood.

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“…However, synchronously hatched individuals may still have synergistic or facilitative effects on one another, involving jointly digging a passage out from the nest, which was supported by the fact that all the hatchlings from a single nest emerged to the surface from a common path and opening (Figure 1b ). Possibly, such effects could effectively reduce the collective amount of energy that the hatchlings need to expend during the digging process (Carr & Hirth, 1961 ; Lacroix et al, 2022 ; Rusli et al, 2016 ).…”

Section: Discussionmentioning

confidence: 99%