Data from: High suckling rates and acoustic crypsis of humpback whale neonates maximise potential for mother–calf energy transfer
1. The migration of humpback whales to and from their breeding grounds results in a short, critical time period during which neonatal calves must acquire sufficient energy via suckling from their fasting mothers to survive the long return journey. 2. Understanding neonate suckling behaviour is criti...
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ftzenodo:oai:zenodo.org:5090359 2024-09-15T18:11:11+00:00 Data from: High suckling rates and acoustic crypsis of humpback whale neonates maximise potential for mother–calf energy transfer Videsen, Simone K. A. Bejder, Lars Johnson, Mark Madsen, Peter T. 2017-05-22 https://doi.org/10.5061/dryad.m8j17 unknown Zenodo https://doi.org/10.1111/1365-2435.12871 https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.m8j17 oai:zenodo.org:5090359 info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode suckling bio-energetics nursing neonate info:eu-repo/semantics/other 2017 ftzenodo https://doi.org/10.5061/dryad.m8j1710.1111/1365-2435.12871 2024-07-25T14:52:42Z 1. The migration of humpback whales to and from their breeding grounds results in a short, critical time period during which neonatal calves must acquire sufficient energy via suckling from their fasting mothers to survive the long return journey. 2. Understanding neonate suckling behaviour is critical for understanding the energetics and evolution of humpback whale migratory behaviour and for informing conservation efforts, but despite its importance, very little is known about the details, rate and behavioural context of this critical energy transfer. 3. To address this pertinent data gap on calf suckling behaviour, we deployed multi-sensor Dtags on eight humpback whale calves and two mothers allowing us to analyse detailed suckling and acoustic behaviour for a total of 68·8 h. 4. Suckling dives were performed 20·7 ± 7% of the total tagging time with the mothers either resting at the surface or at depth with the calves hanging motionless with roll and pitch angles close to zero. 5. Vocalisations between mother and calf, which included very weak tonal and grunting sounds, were produced more frequently during active dives than suckling dives, suggesting that mechanical stimuli rather than acoustic cues are used to initiate nursing. 6. Use of mechanical cues for initiating suckling and low level vocalisations with an active space of <100 m indicate a strong selection pressure for acoustic crypsis. 7. Such inconspicuous behaviour likely reduces the risk of exposure to eavesdropping predators and male humpback whale escorts that may disrupt the high proportion of time spent nursing and resting, and hence ultimately compromise calf fitness. 8. The small active space of the weak calls between mother and calf is very sensitive to increases in ambient noise from human encroachment thereby increasing the risk of mother–calf separation. Readme file for the DTG files Dtag files mn238 mn238.zip Dtag files mn238b mn238b.zip Dtag files mn239a mn239a.zip Dtag files mn239b mn239b.zip Dtag files mn241a mn241a.zip Dtag ... Other/Unknown Material Humpback Whale Zenodo |
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suckling bio-energetics nursing neonate |
spellingShingle |
suckling bio-energetics nursing neonate Videsen, Simone K. A. Bejder, Lars Johnson, Mark Madsen, Peter T. Data from: High suckling rates and acoustic crypsis of humpback whale neonates maximise potential for mother–calf energy transfer |
topic_facet |
suckling bio-energetics nursing neonate |
description |
1. The migration of humpback whales to and from their breeding grounds results in a short, critical time period during which neonatal calves must acquire sufficient energy via suckling from their fasting mothers to survive the long return journey. 2. Understanding neonate suckling behaviour is critical for understanding the energetics and evolution of humpback whale migratory behaviour and for informing conservation efforts, but despite its importance, very little is known about the details, rate and behavioural context of this critical energy transfer. 3. To address this pertinent data gap on calf suckling behaviour, we deployed multi-sensor Dtags on eight humpback whale calves and two mothers allowing us to analyse detailed suckling and acoustic behaviour for a total of 68·8 h. 4. Suckling dives were performed 20·7 ± 7% of the total tagging time with the mothers either resting at the surface or at depth with the calves hanging motionless with roll and pitch angles close to zero. 5. Vocalisations between mother and calf, which included very weak tonal and grunting sounds, were produced more frequently during active dives than suckling dives, suggesting that mechanical stimuli rather than acoustic cues are used to initiate nursing. 6. Use of mechanical cues for initiating suckling and low level vocalisations with an active space of <100 m indicate a strong selection pressure for acoustic crypsis. 7. Such inconspicuous behaviour likely reduces the risk of exposure to eavesdropping predators and male humpback whale escorts that may disrupt the high proportion of time spent nursing and resting, and hence ultimately compromise calf fitness. 8. The small active space of the weak calls between mother and calf is very sensitive to increases in ambient noise from human encroachment thereby increasing the risk of mother–calf separation. Readme file for the DTG files Dtag files mn238 mn238.zip Dtag files mn238b mn238b.zip Dtag files mn239a mn239a.zip Dtag files mn239b mn239b.zip Dtag files mn241a mn241a.zip Dtag ... |
format |
Other/Unknown Material |
author |
Videsen, Simone K. A. Bejder, Lars Johnson, Mark Madsen, Peter T. |
author_facet |
Videsen, Simone K. A. Bejder, Lars Johnson, Mark Madsen, Peter T. |
author_sort |
Videsen, Simone K. A. |
title |
Data from: High suckling rates and acoustic crypsis of humpback whale neonates maximise potential for mother–calf energy transfer |
title_short |
Data from: High suckling rates and acoustic crypsis of humpback whale neonates maximise potential for mother–calf energy transfer |
title_full |
Data from: High suckling rates and acoustic crypsis of humpback whale neonates maximise potential for mother–calf energy transfer |
title_fullStr |
Data from: High suckling rates and acoustic crypsis of humpback whale neonates maximise potential for mother–calf energy transfer |
title_full_unstemmed |
Data from: High suckling rates and acoustic crypsis of humpback whale neonates maximise potential for mother–calf energy transfer |
title_sort |
data from: high suckling rates and acoustic crypsis of humpback whale neonates maximise potential for mother–calf energy transfer |
publisher |
Zenodo |
publishDate |
2017 |
url |
https://doi.org/10.5061/dryad.m8j17 |
genre |
Humpback Whale |
genre_facet |
Humpback Whale |
op_relation |
https://doi.org/10.1111/1365-2435.12871 https://zenodo.org/communities/dryad https://doi.org/10.5061/dryad.m8j17 oai:zenodo.org:5090359 |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Zero v1.0 Universal https://creativecommons.org/publicdomain/zero/1.0/legalcode |
op_doi |
https://doi.org/10.5061/dryad.m8j1710.1111/1365-2435.12871 |
_version_ |
1810448769769013248 |