Further insights into postpartum signature whistle use in bottlenose dolphins (<i>Tursiops truncatus</i>)

King, Stephanie L.; Guarino, Emily; Donegan, Katy; Hecksher, Jane; Jaakkola, Kelly

doi:10.1111/mms.12317

Cited by 10 publications

(20 citation statements)

References 31 publications

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“…Bottlenose dolphins develop signature whistles during the first few months of their lives and emit these when meeting conspecifics; they also copy signature whistles of others interpreted as "calling others" [294,296,299,302,[304][305][306][307][308][309][310][311][312][313].…”

Section: Tursiops Truncatus-bottlenose Dolphinmentioning

confidence: 99%

Review of Underwater and In-Air Sounds Emitted by Australian and Antarctic Marine Mammals

et al. 2017

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The study of marine soundscapes is a growing field of research. Recording hardware is becoming more accessible; there are a number of off-the-shelf autonomous recorders that can be deployed for months at a time; software analysis tools exist as shareware; raw or preprocessed recordings are freely and publicly available. However, what is missing are catalogues of commonly recorded sounds. Sounds related to geophysical events (e.g. earthquakes) and weather (e.g. wind and precipitation), to human activities (e.g. ships) and to marine animals (e.g. crustaceans, fish and marine mammals) commonly occur. Marine mammals are distributed throughout Australia's oceans and significantly contribute to the underwater soundscape. However, due to a lack of concurrent visual and passive acoustic observations, it is often not known which species produces which sounds. To aid in the analysis of Australian and Antarctic marine soundscape recordings, a literature review of the sounds made by marine mammals was undertaken. Frequency, duration and source level measurements are summarised and tabulated. In addition to the literature review, new marine mammal data are presented and include recordings from Australia of Omura's whales (Balaenoptera omurai), dwarf sperm whales (Kogia sima), common dolphins (Delphinus delphis), short-finned pilot whales (Globicephala macrorhynchus), long-finned pilot whales (G. melas), Fraser's dolphins (Lagenodelphis hosei), false killer whales (Pseudorca crassidens), striped dolphins (Stenella coeruleoalba) and spinner dolphins (S. longirostris), as well as the whistles and burst-pulse sounds of Australian pygmy killer whales (Feresa attenuata). To date, this is the most comprehensive acoustic summary for marine mammal species in Australian waters.

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Section: Tursiops Truncatus-bottlenose Dolphinmentioning

confidence: 99%

Review of Underwater and In-Air Sounds Emitted by Australian and Antarctic Marine Mammals

et al. 2017

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“…Instead, these later studies reported heightened production of the mother's signature whistle in the weeks immediately following calf birth (Fripp & Tyack, 2008;King, Guarino, Donegan et al, 2016). This increased post-partum production of the mother's signature may also be an underlying mechanism in the establishment of an early recognition system in the mother-calf dyad (Fripp & Tyack, 2008;King, Guarino, Donegan et al, 2016), but there appears to be some variability in the sensitive window during which this process occurs. Fripp and Tyack (2008) found that peak production of the maternal signature whistle occurred in the first week of calf life, with whistle rates returning to baseline (i.e., pre-partum production rates) by the third week post-partum.…”

mentioning

confidence: 93%

“…Several studies have investigated the role of maternal signature whistle production surrounding parturition, as mother bottlenose dolphins have been shown to increase their signature whistle use prior to (Mello & Amundin, 2005) and following (Fripp & Tyack, 2008;King, Guarino, Donegan, Hecksher, & Jaakkola, 2016) the birth of a calf. Discrepancies exist between findings of these studies, however.…”

mentioning

confidence: 99%

“…For example, Mello and Amundin (2005) found that bottlenose dolphin mothers increased their signature whistle production during gestation, with the largest increase occurring in the days immediately preceding birth. It has been hypothesized that these pre-partum increases in maternal signature whistle production may aid in calf recognition of this sound shortly after birth by exposing the calf to the sound in utero (Kuczaj & Winship, 2015;Mann & Smuts, 1998;Mello & Amundin, 2005), but later studies have found no evidence substantiating this phenomenon in the pre-partum period (Fripp & Tyack, 2008;King, Guarino, Donegan et al, 2016). Instead, these later studies reported heightened production of the mother's signature whistle in the weeks immediately following calf birth (Fripp & Tyack, 2008;King, Guarino, Donegan et al, 2016).…”

mentioning

confidence: 99%

“…It has been hypothesized that these pre-partum increases in maternal signature whistle production may aid in calf recognition of this sound shortly after birth by exposing the calf to the sound in utero (Kuczaj & Winship, 2015;Mann & Smuts, 1998;Mello & Amundin, 2005), but later studies have found no evidence substantiating this phenomenon in the pre-partum period (Fripp & Tyack, 2008;King, Guarino, Donegan et al, 2016). Instead, these later studies reported heightened production of the mother's signature whistle in the weeks immediately following calf birth (Fripp & Tyack, 2008;King, Guarino, Donegan et al, 2016). This increased post-partum production of the mother's signature may also be an underlying mechanism in the establishment of an early recognition system in the mother-calf dyad (Fripp & Tyack, 2008;King, Guarino, Donegan et al, 2016), but there appears to be some variability in the sensitive window during which this process occurs.…”

mentioning

confidence: 99%

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Pre- and Post-Partum Whistle Production of a BottlenoseDolphin (Tursiops truncatus) Social Group

Ames¹,

Macgregor²,

Wielandt³

et al. 2019

IJCP

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The signature whistle of the Atlantic bottlenose dolphin (Tursiops truncatus) is a well-studied acoustic signal know for broadcasting identity and maintaining contact with conspecifics. Several studies have investigated the use of this signal surrounding the birth of calves to dolphin social groups, although there appears to be discrepancies between the findings of these studies. We aimed to add to the current literature in an attempt to reconcile some of these inconsistencies through investigation of signature whistle production by a bottlenose dolphin group two months prior to and two months following the birth of a calf to one of the social group members. We found that the production of signature whistles matching the contour belonging to our dolphin mother increased significantly in both the pre- and post-partum period. Heightened production of the mother’s signature whistle type in the first week of our focal calf’s life supports the establishment of a recognition system within this time period. Given that learning processes associated with the sound environment appear to begin shortly after calf birth, we also explored the signature whistle rates of the other social group members in an effort to determine whether any signature whistle production influenced the development of the dolphin calf’s own signature whistle type. We found that the signature whistles of the other social group members were significantly lower than production of the mother’s signature whistle until after the first week post-partum. None of the signature whistle types appeared to influence the signature whistle development of our focal calf within the scope of this study, however, as the calf did not develop a signature whistle in her first two months of life.

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Maternal Care and Offspring Development in Odontocetes

Mann

2019

Ethology and Behavioral Ecology of Odontocetes

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Further insights into postpartum signature whistle use in bottlenose dolphins (Tursiops truncatus)

Cited by 10 publications

References 31 publications

Review of Underwater and In-Air Sounds Emitted by Australian and Antarctic Marine Mammals

Review of Underwater and In-Air Sounds Emitted by Australian and Antarctic Marine Mammals

Pre- and Post-Partum Whistle Production of a BottlenoseDolphin (Tursiops truncatus) Social Group

Maternal Care and Offspring Development in Odontocetes

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