Northern elephant seals can be categorized into multiple classes based on their age and gender. Females mature earlier than males and reach adulthood several years before males do.
了解详细信息：Northern elephant seals can be categorized into multiple classes based on their age and gender. Females mature earlier than males and reach adulthood several years before males do.
elephantseal.org/age-classes/Northern elephant seals are well named because adult males have large noses that resemble an elephant’s trunk. Males begin developing this enlarged nose, or proboscis, when they reach puberty at about five years, and it is fully developed by eight to nine years.
elephantseal.org/about-the-seals/By the time juvenile elephant seals are ready to go to sea for the first time, their body is 14.4% blood, as compared to 21.2% blood for an adult female (P. Thorson, unpubl. data). Total oxygen stores increase rapidly to a high level in developing elephant seals, due to increases in blood and muscle oxygen stores (table 15.1).
publishing.cdlib.org/ucpressebooks/view?docId=ft7…The age category was based on external characteristics such as prominent elongated proboscis in adult males vs the lack of proboscis in juvenile males, and larger size in adult males vs...
www.researchgate.net/figure/Facial-development-o…Elephant Seal Adult Male or Bull. Length: 14 – 16 feet (4 – 5 meters) Weight: 3,000 – 5,000 pounds (1,400 – 2,300 kilos) Coat Color: Light to dark brown
elephantseal.org/elephant-seal-vital-statistics/About The Seals | Friends of the Elephant Seal
Northern elephant seals are well named because adult males have large noses that resemble an elephant’s trunk. Males begin developing this enlarged nose, or proboscis, when they reach puberty at about five years, and it is fully …
Elephant Seals "d0e23231"
By the time juvenile elephant seals are ready to go to sea for the first time, their body is 14.4% blood, as compared to 21.2% blood for an adult female (P. Thorson, unpubl. data). Total …
Facial development of southern elephant seals with age. The …
The age category was based on external characteristics such as prominent elongated proboscis in adult males vs the lack of proboscis in juvenile males, and larger size in adult males vs...
Elephant Seal Vital Statistics | Friends of the Elephant Seal
Elephant Seal Adult Male or Bull. Length: 14 – 16 feet (4 – 5 meters) Weight: 3,000 – 5,000 pounds (1,400 – 2,300 kilos) Coat Color: Light to dark brown
Northern Elephant Seals ~ MarineBio Conservation …
Northern elephant seals, Mirounga angustirostris (Gill, 1866), have characteristically long noses giving them their common name. This species is sexually dimorphic with adult males weighing 2-7 times more than adult …
Northern Elephant Seal - iNaturalist
Both adult and juvenile elephant seals are bar-skinned and black before molting. After molting, they generally have a silver to dark gray coat that fades to brownish-yellow and tan. Adult males have hairless necks and chests …
Elephant Seal Notes - Young Male Elephant Seals - Google Sites
Male elephant seals are called juveniles between the ages of one and four. After that, they become known as sub-adults between the ages of four and seven. The major characteristic of …
Elephant Seals "d0e1010" - California Digital Library
The adult females are joined by juveniles, 1 to 4 years old, of both sexes. The highest number of animals present on the rookery are seen in late April. Present in the spring but declining in …
Annual survival of adult females was high from age 5 until age 16, but then declined abruptly. This is a higher rate and a longer duration of “prime” survival than expected, and the first evidence …
Elephant Seal Juvenile Vs. Adult 的相关搜索
