What is the ph of a whales stomach?

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Carole Runolfsson asked a question: What is the ph of a whales stomach?
Asked By: Carole Runolfsson
Date created: Sun, May 23, 2021 3:24 AM
Date updated: Thu, Sep 29, 2022 10:51 PM

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pH in the forestomach fluid ranged between 5.36 and 7.43, and the concentration of volatile fatty acids (VFAs) ranged between 49 and 486 mM. Based on these results we conclude that minke whales primarily utilize the prey they eat by microbial digestion.

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🌴 Are killer whales actually whales?

  • Killer Whales Are Actually Dolphins. Today I found out “Killer Whales”, or Orcas, are actually dolphins. In fact, they are the largest member of the dolphin family, Delphinidae . Now strictly speaking, whales are marine animals of the order of Cetacea and occasionally Cetacea is used to refer to not just whales, but also porpoises and dolphins.

🌴 Are killer whales toothed whales?

Killer whales are a type of dolphin, a group of specialized toothed whales.

🌴 What are dolphins killer whales and whales classified as?

Why Are Killer Whales Dolphins and Not Whales? When you really think about it, there are actually a fair few obvious reasons as to why a killer whale should be classified as a dolphin and not a whale: Physiology - Killer whales are long and sleek with rounded heads and tall dorsal fins, much like dolphins. They may be far larger than most ...

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The protein decomposing enzyme present in stomach is called pepsin which, a~ is well known, is active in acid m~dium of pH 1 to 2. According to bibliography, the most suitable pH values for pepsin to work on gelatine is at pH 2-3. However, according to the results obtained in the above

It has a lower pH value than the rest of the stomach, providing an optimal range for whale pepsin, and is therefore a better site of gastric digestion after the food has been superficially broken down by the three preceding chambers [11].

The stomach compartments are joined by narrow openings in sperm whales, and wider ones in humpback whales (Slijper, 1962). The pyloric stomach secretes pyloric acid, and leads to the small intestine for further digestion and absorption of nutrients (Slijper, 1962).

The digestive systems of whales consists of an esophagus, a compartmentalized stomach (similar to that of ruminants like cows or hippos) and an intestine. Prey, whether ingested one at a time as in toothed whales or by the thousands as in baleen whales, are not chewed but rather swallowed whole.

Anatomy The stomach of minke whales consists of four compartments, including an initial nonglandular forestomach followed by a glandular fundic chamber, a connecting Har I -., Minke whale Fig. 1. Gastrointestinal tracts of a harp seal (120 kg) and a minke whale (7000 kg). The minke whale intestine is 4 x body length, while the harp seal ...

Normal gastric pH from a fasted dolphin is between 1.5 and 3.0. If fish particles are still present in the stomach after an overnight fast, maldigestion should be considered.

What this fluid does is decompose anything it comes into contact with that has a generally higher pH value, as gastric acid itself has a pH of somewhere from 1.5 to 3.5. Because foods are deemed inedible long before this low pH is reached, this decomposition is virtually guaranteed. Now imagine the human body.

Food travels from the mouth to the pharynx. From there, the food is pushed into the esophagus and passes into the orca's stomach. The stomach is made up of three compartments. The first compartment is an extension of the esophagus and is made up of smooth tissues. This compartment is called the fore stomach and has no digestive glands.

Similarly, the elderly show relatively low stomach acidity ( pH 6.6 in 80% of study participants) and are prone to bacterial infections in the stomach and gut. It is important to note that these differences may be related to differences in the strength of the immune system however it is argued here that the stomach needs more consideration when studying these patterns.

A general linear model based on diet explained much of the variation in the stomach pH (R 2 = 0.63, F 1,6 = 17.63, p < 0.01). The trophic groups that were most variable in terms of their stomach pH were omnivores and carnivores that specialize in eating insects or fish.

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What kills killer whales?

Intentional threats such as illegal hunting, unauthorized research capture, and live capture for aquarium display are also known causes that can contribute to killer whales' death. Although these situations exist, they tend to be less common among killer whales than other whales/dolphin species.

What makes dolphins whales?

Dolphins have a very different body shape in comparison to whales – dolphins are leaner with torpedo shaped bodies and elongated beaks. Common species that are often called whales but are actually dolphins include Killer Whales, Pilot Whales, and False Killer Whales.

What scientist studies whales?

Whales, dolphins and porpoises are collectively called cetaceans. A whale biologist therefore is often referred to as a cetologist.

What states have whales?
  • San Juan Islands, Washington…
  • Bar Harbor, Maine…
  • Maui, Hawaii…
  • Juneau, Alaska…
  • Cape Cod, Massachusetts…
  • Newport Beach, California…
  • Jacksonville, Florida.
What whales are endangered?
  • Southern Resident Killer Whale. A species to top the list of the endangered species of whale is Southern Resident Killer Whale…
  • Western North Pacific Gray Whale. Western North Pacific Gray Whale is the only gray whale population in endangered list…
  • Cook Inlet Beluga Whale…
  • North Atlantic Right Whale…
  • North Pacific Gray Whale…
  • Bowhead Whale…
  • Blue Whale…
What whales are extinct?
  • of 14. North Atlantic Right Whale - Critically Endangered…
  • of 14. North Pacific Right Whale - Endangered…
  • of 14. Sei Whale - Endangered…
  • of 14. Blue Whale - Endangered…
  • of 14. Western Gray Whale - Endangered…
  • of 14. Vaquita - Critically Endangered…
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  • of 14.
What whales in caribbean?

Caribbean. About 25 species are observed in the Caribbean waters such as Humpback whales, Sperm whales, beaked whales and many other small cetaceans.

What zoos have whales?
  • SeaWorld San Diego, San Diego, California; home of Corky II, Orkid, Ulises, Nakai, Kalia, Ikaika, Keet, Shouka, Makani, and Amaya.
  • SeaWorld Orlando, Orlando, Florida; home of Katina, Trua, Nalani, Malia, and Makaio.
What is the difference between baleen whales and toothed whales?
  • Baleen whales are generally larger than toothed whales except for the sperm whale which is very big and has teeth. Many baleen whales migrate annually, travelling long distances between cold water feeding areas and warm water breeding areas.
Are killer whales dolphins or whales?

Is a Killer Whale a Dolphin? A killer whale is a dolphin. They belong to the animal family of Delphinidae, which includes more commonly known dolphins like bottlenose. Killer whales are also Cetacea, which covers all baleen whales, dolphins, and other large aquatic mammals of similar genealogy.

Are pilot whales dolphins or whales?

Despite their name, pilot whales are not whales at all —they are large dolphins. The common name "pilot whale" comes from an early belief that a pod of whales was led by a pilot or leader. Found in oceans worldwide, the two species are the long-finned pilot whale (Globicephala melas) and short-finned pilot whale (G. macrorhynchus).

Do killer whales eat other whales?

The Southern Resident Killer Whales of Puget Sound dine on only the fattest Chinook salmon, even if it means allowing an entire school of skinnier salmon to swim by. Transient orcas, which have a broader diet, have shown similar selective behavior, in one case killing a gray whale but eating only its tongue.

Do killer whales kill blue whales?
  • Killer Whales Hunt and Kill Blue Whale on West Australian Coast. A pod of killer whales hunted, killed and ate a blue whale off the coast of Bremer Bay , in Western Australia, on April 6. In this footage, captured by local marine filmmaker Dave Riggs , the killer whales are seen closing in on their prey before blood gushes from the blue whale.
Which whales are not baleen whales?
  • Are generally smaller than baleen whales, although there are some exceptions (e.g., the sperm whale and Baird's beaked whale).
  • Are active predators and have teeth that they use to catch their prey and swallow it whole.
What is the difference between pygmy right whales and right whales?
  • Unlike right whales, pygmy right whales have sleeker, more streamlined bodies that are topped with a small, sickle-shaped dorsal fin. On either side they have small, narrow and rounded flippers and underneath they have beautiful pale highlighting that runs from their lower jaw, along the belly and all the way to the tail.
What animal has the strongest stomach?

After a meal the heart directs deoxygenated blood, rich in acidic carbon dioxide, to the stomach. The blood stimulates the production of the most acidic gastric juices known in nature. This remarkable system means crocodiles can secrete stomach acid 10 times faster than any other animal.

Are north pacific right whales baleen whales?
  • North Pacific right whales are baleen whales and therefore have comb-like baleen plates that trap shrimp-like krill and small fish. Where do North Pacific right whales live? Once upon a happier time, North Pacific right whales lived across the entire North Pacific.
Are whales dolphins or are dolphins whales?
  • Dolphin vs. Whale. Whales and dolphins are mammals that belong to the order cetacea , which also includes porpoises. The two animals are physiologically different, with whales often being larger than dolphins and more comfortable in a wider range of water temperatures.
Do humpback whales interact with other whales?
  • Humpback whales have been known to hybridize with other rorquals; there is a well-documented report of a humpback- blue whale hybrid in the South Pacific. Humpbacks are a friendly species that interact with other cetaceans such as bottlenose dolphins. Right whales interact with humpbacks. These behaviors have been recorded in all oceans.
Do killer whales mate with other whales?
  • For instance, the killer whale (which is actually a dolphin) may be found swimming with up to three generations of family members within its pod. However, these dolphins will only mate with partners outside of their pod to prevent intercourse with other family members.