Demographic and physiological signals of reproductive events in humpback whales on a southwest pacific breeding ground.
| Autor: | Pallin LJ; Department of Ecology and Evolutionary Biology, University of California Santa Cruz, Ocean Health Building, 115 McAllister Way, Santa Cruz, CA 95060, USA.; Department of Ocean Sciences, University of California Santa Cruz, Ocean Health Building, 115 McAllister Way, Santa Cruz, CA 95060, USA., Garrigue C; UMR ENTROPIE IRD, Université de La Réunion, Université de la Nouvelle-Calédonie, CNRS, IFREMER, Laboratoire d'excellence-CORAIL, 101 promenade Roger Laroque BP A5NOUMEA CEDEX5 Nouvelle Calédonie 98848, France.; Opération Cétacés, BP 12827, Nouvelle-Calédonie 98802, France., Kellar NM; Marine Mammal Turtle Division, , Southwest Fisheries Science Center, National Marine Fisheries Service, National Oceanic and Atmospheric Administration, 8901 La Jolla Shores Drive, La Jolla, CA 92037, USA., Baker CS; Department of Fisheries, Wildlife, and Conservation Sciences, Marine Mammal Institute, Oregon State University, Hatfield Marine Science Center, 2030 SE Marine Science Drive, Newport, OR 97365, USA., Bonneville CD; UMR ENTROPIE IRD, Université de La Réunion, Université de la Nouvelle-Calédonie, CNRS, IFREMER, Laboratoire d'excellence-CORAIL, 101 promenade Roger Laroque BP A5NOUMEA CEDEX5 Nouvelle Calédonie 98848, France.; Opération Cétacés, BP 12827, Nouvelle-Calédonie 98802, France., Derville S; UMR ENTROPIE IRD, Université de La Réunion, Université de la Nouvelle-Calédonie, CNRS, IFREMER, Laboratoire d'excellence-CORAIL, 101 promenade Roger Laroque BP A5NOUMEA CEDEX5 Nouvelle Calédonie 98848, France.; Opération Cétacés, BP 12827, Nouvelle-Calédonie 98802, France., Garland EC; Sea Mammal Research Unit, Scottish Oceans Institute, School of Biology, University of St. Andrews, W Sands Rd, St Andrews KY16 9XL, UK., Steel D; Department of Fisheries, Wildlife, and Conservation Sciences, Marine Mammal Institute, Oregon State University, Hatfield Marine Science Center, 2030 SE Marine Science Drive, Newport, OR 97365, USA., Friedlaender AS; Department of Ocean Sciences, University of California Santa Cruz, Ocean Health Building, 115 McAllister Way, Santa Cruz, CA 95060, USA. |
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| Jazyk: | angličtina |
| Zdroj: | Conservation physiology [Conserv Physiol] 2024 Jun 18; Vol. 12 (1), pp. coae038. Date of Electronic Publication: 2024 Jun 18 (Print Publication: 2024). |
| DOI: | 10.1093/conphys/coae038 |
| Abstrakt: | The field of marine mammal conservation has dramatically benefited from the rapid advancement of methods to assess the reproductive physiology of individuals and populations from steroid hormones isolated from minimally invasive skin-blubber biopsy samples. Historically, this vital information was only available from complete anatomical and physiological investigations of samples collected during commercial or indigenous whaling. Humpback whales ( Megaptera novaeangliae ) are a migratory, cosmopolitan species that reproduce in warm, low-latitude breeding grounds. New Caledonia is seasonally visited by a small breeding sub-stock of humpback whales, forming part of the endangered Oceania subpopulation. To better understand the demographic and seasonal patterns of reproductive physiology in humpback whales, we quantified baseline measurements of reproductive hormones (progesterone-P4, testosterone-T and 17β-estradiol-E2) using an extensive archive of skin-blubber biopsy samples collected from female humpback whales in New Caledonia waters between 2016 and 2019 ( n = 194). We observed significant differences in the P4, T and E2 concentrations across different demographic groups of female humpback whales, and we described some of the first evidence of the endocrine patterns of estrous in live free-ranging baleen whales. This study is fundamental in its methodological approach to a wild species that has a global distribution, with seasonally distinct life histories. This information will assist in monitoring, managing and conserving this population as global ecological changes continue to occur unhindered. (© The Author(s) 2024. Published by Oxford University Press and the Society for Experimental Biology.) |
| Databáze: | MEDLINE |
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