- Natsersuaq
- Blöðruselur
- Klappmyss
- Ávjjur
- Klapmyds
- Hooded seal
Klappus er størsta kópaslagið í Norðuratlantshavinum. Sum hjá flestu djórum er munur á kynunum. Brimilin verður upp í 2,5 metrar langur og vigar 300 kg, og opnan verður upp í 2,2 metrar long og vigar umleið 160 kg. Vaksni kópurin hevur eyðkent, silvurgrátt skinn við ójøvnum blettum um allan kroppin og myrkt littar lállur og trón. Nósin hevur eyðkent, blágrátt skinn á bakinum, tá hann verður lagdur, men við ljósari liti undir búkinum. Orsakað av hesi litsamanseting hava teir fingið eyknevnið bakblái.
Tað mest eyðkenda sermerkið á klappusi er bløðran, sum hevur givið honum navnið bløðrukópur á føroyskum og Hooded seal á enskum. Bløðran er í roynd og veru ein nasabløðra á brimlinum, sum kann blásast upp og fáa skap sum ein tvíflippað bløðra oman á og framman til á høvdinum. Harumframt hava brimlarnir eitt toyggiligt nasaskilarúm, sum eisini kann blásast upp og líkist eini ljósareyðari ballón. Uppblásta bløðran og nasaskilarúmið hava ein týðandi leiklut, tá teir makast. Meðan opnan hjúklar um nósan hjá sær, kappast brimlarnir um rættin at makast, við at teir ferð eftir ferð blása bløðruna og nasaskilarúmið upp. Kappingin kann eisini hava við sær, at brimlarnir berjast, og hetta endar onkuntíð við, at teir fáa skaða.
Ljóðheiti: Heloise Frouin-Mouy, JASCO Applied Sciences & Mike Hammill, DFO
Hóttanir
Gransking
The name hooded seals comes from the distinctive hood that males sport. It is usually displayed during the breeding season to attract mates. But what is this hood? It is the nasal sac—air-filled empty spaces on either side of the nasal cavity—which can be inflated to form a bi-lobed hood over the top and front of the head. In addition to their hood, they also have elastic nasal septum—structure in the midline that divides the right and left nasal cavities— which can also be inflated and looks like a pink balloon.
While nursing their pups, female hooded seals are frequently surrounded by one to several males who compete with one another for a mate. This competition consists mainly of display, with males repeatedly inflating their bi-lobed “hoods” and nasal septums. While the competition is usually just displays, it can also involve fighting one another. Because this hood is used in attracting the females, it can be considered secondary sexual characteristics.
Interestingly, yawning in aquatic species, like belugas, is intriguing because they don't breathe through their mouths, as fully aquatic mammals have a separate trachea and esophagus. Nevertheless, the open mouth behaviour displayed by beluga whales during certain events has been described as "yawn-like" due to its resemblance to yawning in terrestrial mammals. But why do belugas yawn, and what triggers this behaviour? The function of yawning in animals, including belugas, remains somewhat mysterious. In humans, yawning has been associated with various factors such as sleepiness, respiration and circulatory needs, boredom, arousal, empathy, and thermoregulation. The observation of Ames (2022) raises questions about whether belugas, with their social and imitative abilities, may have the capacity to imitate human motor movements. Read the full observation by Ames (2022) here: https://doi.org/10.1578/AM.48.6.2022.495




















































































































