Results 61 to 70 of about 8,493 (212)
Growth and reproduction in harbour porpoises (Phocoena phocoena) in Icelandic waters
NAMMCO Scientific Publications, 2003 A total of 1,268 harbour porpoises were obtained from fishing nets in Icelandic coastal waters from September to June in the years 1991 to 1997. Foetal sex ratio was 1.2:1 (male:female). The bias towards males increased further among older animals in the
Droplaug Ólafsdóttir +3 more
doaj +1 more source
Is Harbor Porpoise (Phocoena phocoena) Exhaled Breath Sampling Suitable for Hormonal Assessments?
Animals, 2021 Over the last decades, exhaled breath sampling has been established for laboratory analysis in various cetacean species. Due to their small size, the usability of respiratory vapor for hormone assessments was questionable in harbor porpoises (Phocoena ...
Anja Reckendorf +6 more
doaj +1 more source
Microhaplotype Methods Enable Relationship Inference in a Bottlenecked Mammalian Species
Animal Conservation, EarlyView.Northern elephant seals (Mirounga angustirostris) are among the most genetically depauperate mammals in the world. A near‐total population bottleneck in the 19th century, coupled with the breeding system of extreme polygyny, has challenged efforts to estimate individual reproductive success with genetic methods.
Keith M. Hernandez +6 more
wiley +1 more source
Environment International, 2020 Many endangered marine mammal populations are difficult to study, spread out over large areas, and capturing them for branding and research purposes would be unethical. Yet, they are in urgent need for assessment and conservation actions.
Linnea Cervin +2 more
doaj +1 more source
Experimental Physiology, EarlyView.Abstract High‐resolution movement data from Cuvier's beaked, or goose‐beaked whale (Ziphius cavirostris, hereafter Ziphius, n = 8) tag deployments (4.1–19.2 days) were used to estimate blood and tissue O2 and CO2 levels. Acceleration and magnetometry data were used to estimate the locomotion cost (LC) from the relationship between activity and the O2 ...
Andreas Fahlman +8 more
wiley +1 more source
Harbour Porpoises Are Flexible Predators Displaying Context‐Dependent Foraging Behaviours
Ecology and EvolutionOpportunistic mobile predators can adapt their behaviour to specific foraging scenarios, allowing them to target diverse prey resources. An interesting example is the harbour porpoise (Phocoena phocoena), a marine mammal with a huge energy demand feeding
Johanna Stedt +4 more
doaj +1 more source
Animals, 2022 Harbour porpoises (Phocoena phocoena) are useful indicators of the health of their wild populations and marine ecosystems, yet their elusive nature makes studying them in their natural environment challenging.
Aleksija Neimanis +4 more
doaj +1 more source
Synthetic communication signals influence wild harbour porpoise (Phocoena phocoena) behaviour [PDF]
, 2015 We used our novel and programmable Porpoise Alarm (PAL, patd.) to synthesize life-like, electronic harbour porpoise communication signals based on those described for captive animals.
Conrad, Matthias +3 more
core +1 more source
The Journal of Physiology, EarlyView.Abstract figure legend Unoccupied aerial vehicle (UAV)‐based photogrammetry provides measurements equivalent to traditional hand measurements in bottlenose dolphins. Mass estimates derived from UAV measurements closely match the true body mass of live individuals.
Riccardo Cicciarella +7 more
wiley +1 more source
Establishing death in stranded Odontocetes (toothed whales) using other mammals : a pilot study : a thesis presented in partial fulfillment of the requirements for the degree of Master of Science in Zoology at Massey University [PDF]
, 2003 The aim of this study was to investigate and evaluate a new method for determining death in stranded odontocetes (toothed whales). The new method was using the pulsations seen in the retinal blood vessels in the place of the heart rate. The retinal blood
Paul, Katherine A
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