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Optimizing automated photo identification for population assessments.
Conserv Biol
January 2025
Marine Mammal Research Program, Hawai'i Institute of Marine Biology, University of Hawai'i at Mānoa, Kāne'ohe, Hawai'i, USA.
Several legal acts mandate that management agencies regularly assess biological populations. For species with distinct markings, these assessments can be conducted noninvasively via capture-recapture and photographic identification (photo-ID), which involves processing considerable quantities of photographic data. To ease this burden, agencies increasingly rely on automated identification (ID) algorithms.
View Article and Find Full Text PDFCommentary on the Adaptive Significance of Sociality Around Parturition Events, and Conspecific Support of Parturient Females in Some Social Mammals.
Animals (Basel)
December 2024
School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington LE12 5RD, UK.
In recent decades, it has become apparent that during parturition events in a number of social mammals, social support behaviours from group mates can be directed to parturient females (and their newborn neonates). Such behaviour has been documented in diverse taxa, across non-human primates, , , and , living in a range of social group organisations, from matrilineal groups to cooperatively breeding groups and multi-male, multi-female groups. Since sociality, in association with parturition, has been demonstrated to confer several health benefits to human mothers and neonates, here, we also consider the potential adaptive significance of social support behaviours for other, non-human, social mammals.
View Article and Find Full Text PDFVessel strike encounter risk model informs mortality risk for endangered North Atlantic right whales along the United States east coast.
Sci Rep
January 2025
Office of Protected Resources, NOAA Fisheries, Silver Spring, MD, 20910, USA.
Vessel strikes are a critical threat to endangered North Atlantic right whales (Eubalaena glacialis), significantly contributing to their elevated mortality. Accurate estimates of these mortality rates are essential for developing effective management strategies to aid in the species' recovery. This study enhances existing vessel strike models by incorporating detailed regional data on vessel traffic characteristics as well as whale distribution and behavior.
View Article and Find Full Text PDFInterbreeding area movement of an adult humpback whale between the east Pacific Ocean and southwest Indian Ocean.
R Soc Open Sci
December 2024
DMAD-Marine Mammals Research Association Erenkoy, Istanbul, Turkey.
Humpback whales undertake one of the longest known migrations of any mammal. While their migration route generally extends between latitudes, the breeding stocks are longitudinally separated and display high site fidelity to their feeding grounds. While there is an indication of certain breeding stocks overlapping with each other, the current information on the migration routes of humpback whales within the Southern Hemisphere limits our understanding of the extent of this exchange.
View Article and Find Full Text PDFHigh-resolution biologging of an Atlantic bluefin tuna captured and eaten by a supposed orca.
Sci Rep
November 2024
Hatherly Laboratories, University of Exeter, Prince of Wales Road, Exeter, EX4 4PS, UK.
Article Synopsis
- Biologging technology has been employed to track the behaviors and migrations of various wild animals, including a notable event involving the predation of an Atlantic bluefin tuna by an orca.
- The study details a 19-minute predation sequence where the tuna displayed high activity levels during its capture and subsequent handling by the orca.
- Unique datasets collected from both the tuna and orca give valuable insights into their energetic behaviors and patterns of interaction in the ocean.
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