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10 results for “wandering albatross”
Linked collectors and determiners for: Settling the name Diomedea exulans Linnaeus, 1758 for the Wandering Albatross by neotypification.
Natural history specimen data linked to collectors and determiners held within, "Settling the name Diomedea exulans Linnaeus, 1758 for the Wandering Albatross by neotypification". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/fc8ec736-e4dd-4f7e-8f7e-6d1b7d475441">https://bionomia.net/dataset/fc8ec736-e4dd-4f7e-8f7e-6d1b7d475441</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/fc8ec736-e4dd-4f7e-8f7e-6d1b7d475441">https://gbif.org/dataset/fc8ec736-e4dd-4f7e-8f7e-6d1b7d475441</a>. Formatted as a Frictionless Data package.
Partner intrinsic characteristics influence foraging trip duration, but not coordination of care in wandering albatrosses Diomedea exulans
<p>1. Long-lived monogamous species gain long-term fitness benefits by equalising effort during bi-parental care. For example, many seabird species coordinate care by matching foraging trip durations within pairs.</p> <p>2. Age affects coordination in some seabird species; however, the impact of other intrinsic traits, including personality, on potential intraspecific variation in coordination strength is less well understood.</p> <p>3. The impacts of pair members' intrinsic traits on trip duration and coordination strength were investigated using data from saltwater immersion loggers deployed on 71 pairs of wandering albatrosses <em>Diomedea</em> <em>exulans</em>. These were modelled against pair members' age, boldness and their partner's previous trip duration.</p> <p>4. At the population level, the birds exhibited some coordination of parental care that was of equal strength during incubation and chick-brooding. However, there was low variation in coordination between pairs and coordination strength was unaffected by the birds' boldness or age in either breeding stage. Surprisingly, during incubation, foraging trip duration was mainly driven by partner traits, as birds that were paired to older and bolder partners took shorter trips. During chick-brooding, shorter foraging trips were associated with greater boldness in focal birds and their partners, but age had no effect.</p> <p>5. These results suggest that an individual's assessment of their partner's capacity or willingness to provide care may be a major driver of trip duration, thereby highlighting the importance of accounting for pair behaviour when studying parental care strategies.</p>
Partner intrinsic characteristics influence foraging trip duration, but not coordination of care in wandering albatrosses Diomedea exulans
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Behavioral datasets of wandering albatrosses collected at Possession Island, Crozet, France, in 2019 and 2020
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FIGURE 3 in Settling the name Diomedea exulans Linnaeus, 1758 for the Wandering Albatross by neotypification
FIGURE 3. Holotype of Diomedea exulans georgia Mathews, MACN Or8816, dorsal view. Image: A. Tennyson, NMNZ.
FIGURE 2 in Settling the name Diomedea exulans Linnaeus, 1758 for the Wandering Albatross by neotypification
FIGURE 2. Lectotype of Diomedea spadicea Gmelin, NHMW 13.648, lateral view, standing mount. Image: A. Tennyson, NMNZ.
Wandering Albatross observed and simulated GPS tracks from Crozet and Marion islands (2016-2019)
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FIGURE 1 in Settling the name Diomedea exulans Linnaeus, 1758 for the Wandering Albatross by neotypification
FIGURE 1. Neotype of Diomedea exulans Linnaeus, AMNH 526787, lateral view. Image: C. Chesek, AMNH.
Data from: An integrated assessment model of seabird population dynamics: can individual heterogeneity in susceptibility to fishing explain abundance trends in Crozet wandering albatross?
1. Seabirds have been incidentally caught in distant-water longline fleets operating in the Southern Ocean since at least the 1970s, and breeding numbers for some populations have shown marked trends of decline and recovery concomitant with longline fishing effort within their distributions. However, lacking is an understanding of how forms of among-individual heterogeneity may interact with fisheries bycatch and influence population dynamics. 2. We develop a model that uses comprehensive data on the spatial and temporal distributions of fishing effort and seabird foraging to estimate temporal overlaps, fishery catchability and consequent bycatch. We apply a population model that is structured by age, sex, life stage and spatially to Crozet Island wandering albatross and explore how heterogeneity in susceptibility to capture may have influenced the population's demography over time. 3. A model where some birds were assumed to be more susceptible to fisheries bycatch was able to successfully replicate the observed trend in breeding pairs. Considerably poorer fits were found without this assumption. Results suggested that the more susceptible birds may have been removed from the population by the 1990s. 4. The model was also able to highlight areas, times and fleets prone to increased bycatch. Knowledge of these factors should assist fisheries and conservation management bodies to quantify and reduce seabird bycatch through spatial management and fleet-specific mitigation efforts. 5. Synthesis and application. Many seabirds show complex life histories that make them highly susceptible to additional incidental mortality from fishing vessels. By applying a population model that integrates key aspects of seabird and fishery dynamics, we were able to explain the observed trends in the breeding population of Crozet wandering albatross and identify key areas and fleets where further mitigation may be required. In addition, the potential removal of a category of birds that shows increased susceptibility to capture has important implications for the conservation management of this population and other iconic species incidentally caught by large-scale commercial fisheries.
Data from: An integrated assessment model of seabird population dynamics: can individual heterogeneity in susceptibility to fishing explain abundance trends in Crozet wandering albatross?
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Allen Brain Atlas
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OpenNeuro
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