Interspecies Altruism Between Dolphins and Whales

In the National Geographic Website, the article " Dolphin Saves Stuck Whales, Guides Them Back to Sea" made me ponder the reasons behind such behavior. The article is heart warming, intriguing and also relatable but does not provide convincing scientific explanations for the dolphin's behavior. In examining this article, I will attempt to explain anthropomorphism as a narrative technique and more importantly, account for the dolphins unusual behaviour by using the concepts of evolution, imprinting and also learning.

The main animal in question is the Bottlenose Dolphin (Tursiops truncatus) which rescues a stranded Sperm Whale (Physeter macrocephalus) .

http://en.wikipedia.org/wiki/Bottlenose_dolphins


Below are interesting excerpts from the article which can be found in the link above.

"Moko just came flying through the water and pushed in between us and the whales," Juanita Symes, another rescuer, told the Associated Press. "She got them to head toward the hill, where the channel is. It was an amazing experience."

Anton van Helden, a marine mammals expert at New Zealand's national museum, Te Papa Tongarewa, said the reports of Moko's rescue were "fantastic" but believable because dolphins have "a great capacity for altruistic activities."

There's evidence of dolphins protecting people lost at sea, and the swimmers are known for their playfulness with other animals.

"But it's the first time I've heard of an inter-species refloating technique. I think that's wonderful," said van Helden, who was not involved in the rescue but spoke afterward to Smith.

While reading this article, emotions of admiration, surprise and a "heart-warming" feeling arose possibly as a result of the manner of reporting. In a recent tutorial, the concept of Anthropomorphism would seem appropriate to explain for the invocation of such affects in the reader. Anthropomorphism is described as "the attribution of human characteristics to non-human animals, most commonly by supposing non-human behaviour to be motivated by human emotion that might motivate superficially similar human behaviour." Though the manner of reporting is effective and informative, it does not provide satisfactory answers to explain the behaviour of the dolphin. In another article "Myth, metaphor and hypothesis: how anthropomorphism defeats science" by Lucy G. Sullivan, she states that "Because of our natural tendency to interpret the world in the light of human experience, language expressing this viewpoint comes most readily to our tongue." My intention however is not to discredit the article, but to highlight human tendency towards describing animal behaviour by borrowing means of representation from human behaviour. This would then serve as a launching point to introduce another set of articles that would better explain the dolphin’s behaviour as a student of animal behaviour.


In another related article on the same incident titled  "Why species give each other a helping hand", a more scientific attempt was made to explain the dolphin's behaviour through the concept of imprinting. An interesting observation I made is that the writer of the article could be the same author  of "An Introduction to Animal Behaviour", a  supplementary reading of this course.

"By and large, adult animals rarely do anything unless there is something in it for them. When they do, however, it's generally because something has gone awry with their sense of self."

"Many scientists will tell you that faulty imprinting lies behind all apparent examples of inter-species co-operation. It may well be that with Moko the dolphin it was a case of mistaken identity."

The reason provided for this instance of interspecies cooperation is possibly a result of faulty imprinting. Imprinting according to our suggested supplementary reading is a difficult term to pin down but provided for a tentative definition as "various behavioural changes whereby a young animal becomes attached to a 'mother figure' or a future mating partner." It is possible, as suggested by the author that "It may be that Moko actually mistook the whales for dolphins". Thus this explanation makes this unusual occurrence of interspecies cooperation more fitting when considering the altruistic behaviour as an adaptive behaviour in light of the theory of evolution. By reading the dolphin's action as an act of mistaken intraspecies altruism, there are many instances of seemingly altruistic intraspecies behaviour such as cooperative breeding in birds, cooperative acts in primate groups and the cooperative nature of other animal groups that occur as a result of reciprocity and self benefit. This is further substantiated in another article which states the need "To account for the manifest existence of cooperation and related group behavior such as altruism and restraint in competition, evolutionary theory has recently acquired two kinds of extension. These extensions are, broadly, genetical kinship theory and reciprocation theory."

In conclusion, anthropomorphism as a narrative technique makes articles on animal behaviour more relatable and more easily identifiable with the masses. However, a more scientific approach is necessary when attempting to explain animal behaviour. The second article thus provides for a more satisfactory and scientific interpretation of the dolphin's behaviour, using theories of imprinting and evolution to account for this unusual phenomenon.

 

References:

1."Dolphin Saves Stuck Whales, Guides Them Back to Sea" by Ray Lilley. Nationalgeographic.com, 12th March 2008.

2. Lucy G. Sullivan Philosophical Transactions: Biological Sciences, Vol. 349, No. 1328 (Aug. 29, 1995), pp. 215-218

3. Manning, Aubrey and Dawkins, Marian Stamp, An Introduction to Animal Behaviour 5th Edition, Cambridge University Press (1998)

4. Robert Axelrod; William D. Hamilton The Evolution of Cooperation: Science, New Series, Vol. 211, No. 4489. (Mar. 27, 1981), pp. 1390-1396.

5."Why species give each other a helping hand" by Aubrey Manning. Dailymail.co.uk, 13th March 2008