A4 Pod

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A4 pod is the name given to one of the best known killer whale families in British Columbia. As of March 2013, it consists of 3 matrilines and 15 members and is most famous for being the family of young Springer, who was the first orca to be successfully reintroduced to the wild after being handled by humans. A4 pod is part of the Northern Resident community of orcas found in coastal waters ranging from mid-Vancouver Island to Southeastern Alaska up through the Queen Charlotte Islands. The community is made up of three clans known as A, G and R clans, each possessing a distinctive dialect and consisting of several related pods. A4 pod belongs to the biggest clan, A clan.

Early research and naming[edit]

A4 pod was one of the first pods photo-identified by Michael Bigg and Graeme Ellis in 1972. At that time, it was called “The Six” and was first thought to be part A pod. When it became clear to researchers that these whales spent a significant amount of time apart from the rest of the group and had just happened to be travelling together when first identified, it was named A4 pod and A pod became A1 pod, A4 pod and A5 pod. Also, when the study began, it was assumed that orca pods were harems led by mature males. Thus, A4 pod was named after a large bull called A4 while it should have been named A10 pod after the matriarch A10.

Evolution of the pod[edit]

When A4 pod was first encountered, it travelled as one group led by the matriarch A10. However, in 1983, she and her latest calf A47 were shot at the rubbing beaches in Robson Bight, leaving to her probable daughters Yakat (A11) and Kelsey (A24) the roles of matriarchs while still being young adults. In 1986, the pod began splitting into two subpods, A11, led by Yakat (A11) and A24, led by probable sister Kelsey (A24). However, these matrilines still spend most of their time together. Starting in the early 2000s, Yakat’s oldest daughter Skagit (A35) and her offspring began spending time apart from the rest of the group, thus creating a third matriline, A35. With the death of Yakat, matriline A56 was formed with Nahwitti as matriarch. It is important to note, however, that the A35s and the A56s are still most often seen together.

Tragedies[edit]

The A4 pod has had more deaths than any other pod in the northern resident community, with 17 deaths recorded since the study began. Kelsey (A24) has lost her first five calves, as well as her two younger siblings and Yakat (A11) has lost two offspring, one of her grandchildren and one of her great-grandchildren. Moreover, Yakat and Kelsey’s mother A10 and sibling A47 died in tragic circumstances in 1983. The two were shot at the rubbing beaches in Robson Bight, the gunshots attracting a whale watching vessel nearby which immediately went to find them. According to the operator of the boat, A47 was bleeding profusely while being supported by its mother. Both of the whales later died that winter. Over the years, unexpected deaths have hit the family many times, despite the ceasing of shootings and live captures for aquaria. In 2001, Kelsey’s daughter Sutlej (A45) died, leaving two year old daughter Springer (A73) orphaned. In 2002, Springer was found alone and emaciated in Puget Sound, several hundreds of miles away from her family’s home range. After being taken to Johnstone Strait and brought back to health, she was successfully reintroduced to wild whales before settling in with her grand aunt Yakat’s matriline. In 2006, Yakat’s son Skeena (A13) sustained an injury to the top of his dorsal fin and her great-grandchild Canoona (A82) was hit by a boat propeller. The whale then went missing and is now considered dead.

The pod today[edit]

Having four reproductive females, A4 pod can be recognized by its large proportion of young calves and juveniles. Perhaps because of the many tragedies that have hit the family over the years, the A4s are much warier of boats than other pods and often prefer to stay far away from them despite being more tolerant than in the 1980s. They are one of the most commonly encountered groups of orcas, mostly due to their preference for the Johnstone Strait region during the summer and fall and are often seen with other Northern Resident pods, especially A1 and A5 pods which appear to be very closely related to one another. A4 pod also has the particularity of being the only resident pod to frequently feed on pink salmon, to which residents usually prefer the larger, fatter Chinook salmon.

In January 2013, 55 year old matriarch Yakat (A11) was found dead on a beach near Ketchikan, Alaska. A full necropsy has been performed in the hope of discovering what caused the killer whale's death.[1]

Current status[edit]

As of March 2013, A4 pod consists of three matrilines and 15 members. The three matrilines are:

The A24 matriline, which consists of Kelsey's daughter Schooner (A64), born in 1995, her son Magin (A71), born in 1999, Toba (A78), born in 2003 and Mystery (A94), born in 2009, as well as Schooner's first offspring, Kanish (A89).

The A35 matriline, which consists of Yakat’s daughter Skagit (A35), born in 1974, her daughter Kiltick (A52), born in 1987, her daughter Sunny (A70), born in 1999, Roller, born in 2003, Pine (A90), born in 2008 and Kiltick’s own calf Nalau (A81), born in 2004.

The A56 matriline, which consists of Yakta's daughter Nahwitti (A56), born in 1990, her cousin once removed Springer (A73), born around 2000 and Nahwitti's own offspring, Kalect (A97), born in 2010. The A56 used to be known as the A11 but since matriarch Yakat (A11) died in January 2013, the matriline will take the name of her daughter Nahwitti (A56).

Deceased members include: A10 (1941-1983), A4 (1952-1984), A19 (1973-1973), A47 (1983-1983), Siwiti (A48; 1983-1996), A65 (1996-1996), A41 (1981-1981), Sutlej (A45; 1983-2001), A68 (1997-1997), A49 (1985-1986), Scylla (A53; 1988-1992), Surf (A58; 1992-1993), A76 (2002-2002), Racey (A59; 1992-2006), Canoona (2004-2006), Skeena (A13; 1978-2010), Yakat (A11; 1958-2013) and Kelsey (A24; 1967-2013).

See also[edit]

Books[edit]

  • Ford, John K.B.; Ellis, Graeme M.; & Balcomb, Kenneth C. (2000). Killer Whales (2nd ed.). UBC Press. ISBN 0-7748-0800-4.
  • Hoyt, Erich. (1990). Orca: The Whale Called Killer (3rd ed.). London: Robert Hale Limited. ISBN 0-920656-25-0.
  • Morton, Alexandra. (2002). Listening To Whales : What the Orcas Have Taught Us. Ballantine Books. ISBN 0-345-44288-1.

References[edit]