Steller sea lion diet

We do not know if the change in Males may be up to 325 cm (10-11 ft) in length and can weigh up to 1,100 kg (2,400 lb).

While residents feed exclusively on Pacific salmon (Oncorhynchus spp.

What they will eat depends on the season and what part of their distribution area that they live in. Project Description. When these giants thunder ashore, their favored beaches, called rookeries, disappear under their numbers. These SSLs belong to the Asian stock and their origins are in Russian rookeries (Isono, Burkanov, Ueda, & … They use land habitat as haul-out sites for periods of rest, molting, and as rookeries for mating and pupping during the breeding season.
When fully grown, females average 2.3 m in length and weigh about 300 kg. Among pinnipeds, it is inferior in size only to the walrus and the two species of elephant seals. The Steller (or northern) sea lion is the largest member of the family Otariidae, the “eared seals,” which includes all sea lions and fur seals. In addition, dietary preference varies between different transient populations that choose to feed on different marine mammal species. Steller sea lion Regional Population Trend: Counts of Adult and Juvenile Steller sea lions by Area, 1990-2012 (black dots). Diet /Feeding. It is called qawax (pronounced ka-wa; qawan, plural) by Aleut natives, sivuch (sivuchi, plural) … Project Description. Steller Sea Lions find a wide variety of food to consume in the water.

diet, diet diversity, Eumetopias jubatus, Hokkaido, Steller sea lion 1 | INTRODUCTION Steller sea lions (SSLs; Eumetopias jubatus) travel to the coast of Hokkaido Island, Japan, to overwinter (Nishiwaki, 1967). Females are smaller than males, 240-290 cm (7.5-9.5 ft) in length and up to 350 kg (770 lb). Reproduction and Young. Bering Sea 3 4 5 2 1 Figure 1. Steller sea lion diet and foraging using chemical signatures, Alaska Fish and Game. The Steller sea lion (or northern sea lion), Eumetopias jubatus, is the largest otariid pinniped and one of the more aesthetically appealing sea lions (Loughlin et al., 1987).In Greek, Eumetopias means having a well-developed, broad forehead; in Latin jubatus means having a mane, as in the male. found to be similar to other regions in SEA in terms of the types of species consumed. The Western stock of Steller sea lions was placed on the endangered species list in 1997, and despite years of research, the cause behind their continued decline remains unclear. Differences in frequency of occurrence likely reflect regional differences in availability (Arimitsu and others, 2003). Steller sea lions are named for Georg Wilhelm Steller, the German surgeon and naturalist on the Bering expedition who first described and wrote about the species in 1742. Sea lions now rely on pollock as a main dietary source. The Steller sea lion (Eumetopias jubatus) is the largest member of the Otariid (eared seal) family.
Steller sea lion diet, stress, and pregnancy. They are almost 1 m long. Map of the Aleutian Islands showing the sites where Steller sea lion scats were collected (1990-2012) and the 5 Areas used for trend, diet and groundfish community analysis. Steller sea lion, Steller’s sea lion, northern sea lion: Scientific Name: Eumetopias jubatus: Body Size: Steller sea lions weigh about 21 kg when born (male pups are usually larger than female pups, with males weighing 22 kg and females 20 kg). Some of the common ones include all types of fish, various invertebrates, and even smaller Sea Lions of the same species or others if those food sources are scarce. The diet of Steller sea lions as indicated by scat was . The steller sea lion is the largest sea lion and largest of all the eared seals, with males reaching 2200 pounds (1000 kg) and more than 10 feet (3 m) long. General Description.

Steller sea lion diet, stress, and pregnancy.

These giant pinnipeds hunt fish, squid, octopus and, rarely, smaller seals. The Western stock of Steller sea lions was placed on the endangered species list in 1997, and despite years of research, the cause behind their continued decline remains unclear. Stellers are the largest of all sea lions and they have an appetite to match. They also kill harbor seals, ringed seals, younger northern fur seals and other animals. Steller sea lions are carnivores (piscivores, molluscivores), they mainly eat Atka mackerel, walleye pollock, Pacific cod, and Pacific salmon.


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