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Evolution of Mermaids
Transcript of Evolution of Mermaids
Evolution of Mermaids
Carnivorous teeth in aquatic mammals is a favoured phenotype.
Gives the mermaid an advantage against predators/prey.
Able to tear raw flesh
Frequency Dependent Evolution
- Negative Frequency Dependent (Apostatic Selection)
- Positive Frequency Dependent
Advantage to rare phenotypes
Advantage to common phenotypes
- Encourage Allogamy
- Mermaid tail colour, shape & size
SKILLS & ABILITY
- Ratio of males to females in a population
- Parents producing males in female dominant population will be fitter
Certain hair colours are more appealing than others
E.g. Blonde/brunette hair could be considered more attractive than red hair
Colour, luster, size & shape are attributed to degree of 'attractiveness'
Females are more likely to choose 'healthier' males (determined by colour and shine of tail) --> The Hamilton & Zuk Hypothesis
Ability to effectively & efficiently hunt and gather food is important for survival, impressing potential mate & nourishing offspring
Courtship display is important for impressing a potential partner and showing off ornaments (e.g. tail)
The mermaid has evolved to have prominent phalanges and opposable thumbs like that of an ape.
This adds an advantage in an ocean environment being a smaller animal.
Able to craft tools/weapons in the use of hunting/protection.
Ward off predators etc.
Where one species depends on its host for survival
- More suited to mermaid skin
- Similar, but separate species to those on whales
: funny-pictures.picphotos.net 2009
- Similar to those on whales
- Mermaids provide transport
- Mermaids receive defense
Image: http://www.oceanwideimages.com/categories.asp?cID=375 2014
Image http://digital-art-gallery.com/picture/8455 2009
Image: http://soniagarciaart.blogspot.com.au 2011
Image Source: http://pirates.wikia.com/wiki/Mermaid
Image Source: http://growingupbryce.com/category/strictly-supernatural/
Arranz mail, P., Aguliar de Soto, N., Madsen, P.T., Brito, A., Bordes, F. & Johnson, M. P. (2011). Following a Foraging Fish-Finder: Diel Habitat Use of Blainville's Beaked Whales Revealed by Echolocation. Journal of PLOS, 57, 5647-5657. doi: 10.1371/journal.pone.0028353
Bejder, L., & Hall, B. K. (2002). Limbs in Whales and Limblessness in other Vertebrates: Mechanisms of evolutionary and developmental transformation and loss. Evolution & Development, 4(6), 445-458. doi:10.1046/j.1525-142X.2002.02033.
Buschholtz, E. A., (2001). Vertebral osteology and swimming style in living and fossil whales (Order: Cetacea). Journal of Zoology, 253(2), pp. 175-190.
Carter, M. C., et al. (2011). Functional Innovation through Vestigialization in a Modular Marine Invertebrate. Biological Journal of the Linnean Society, 104(1), 63-74. doi:10.1111/j.1095-8312.2011.01706.
C. H. Lockyer, L. C. M. T. W., (1984). The biochemical composition of fin whale blubber. Canadian Journal of Zoology, 62(12), pp. 2553-2562.
Cunnane, S. C. (1980). The aquatic ape theory reconsidered. Medical Hypotheses, 6(1), 49-58. doi:10.1016/0306-9877(80)90030-4
Fetcher, E. S., (1939). The Water Balance in Marine Mammals. Department of Physiology, University of Chicago, 14(4), pp. 452-455.
Hui, C. A., (1983). Seawater Consumption and Water Flux in the Common Dolphin Delphinus Delphis. Naval Ocean Systems Centre, 54(4), pp. 430-432.
Kjeld, M., (2003). Salt and water balance of modern baleen whales: rate of urine production and food intake. Canadian Journal of Zoology, 81(4), pp. 606-616.
Lupi, O. (2008). Ancient Adaptations of Human Skin: Why do we retain sebaceous and apocrine glands? International Journal of Dermatology, 47(7), 651-654. doi:10.1111/j.1365-4632.2008.03765.
Marine Bio Conservation Society (2014) Marine Mammals Retrieved from http://marinebio.org/oceans/marine-mammals/
Miller, C. W. (2013). Sexual Selection. Retrieved October 14, 2014, from http://entnemdept.ufl.edu/miller/millerlab/Miller_LPGE_VII.5.pdf
Ortiz, R. M., (2001). Osmoregulation in Marine Mammals. The Journal of Experimental Biology, Volume 204, pp. 1831-1842.
Parry, D. A., (1949). The Structure of Whale Blubber, and a Discussion of its Thermal Properties. Department of Zoology, University of Cambridge, 90(3), pp. 13-25.
Rhys-Evans, P. H. (1992). The paranasal sinuses and other enigmas: An aquatic evolutionary theory. The Journal of Laryngology and Otology, 106(3), 214-225. doi:10.1017/S0022215100119115
Thewissen, J. G. (2009). Courtship and Sexual Behaviour. In J. G. Thewissen, Encyclopedia of Marine Mammals (p. 105). Academic Press.
Towson. (2012). Sexual Selection. Retrieved October 14, 2014, from http://pages.towson.edu/scully/sexual_selection.html
University of California - Museum of Paleontology, (2014). Understanding Evolution - the evolution of whales. [Online]
Available at: http://evolution.berkeley.edu/evolibrary/home.php
[Accessed 16 10 2014].
Image: Alien Disclosure Group
Remnant Hind Limbs
Remnant pelvic girdle, tarsals and metatarsals present
Vertical axial undulation has replaced bipedal locamotion as feet lost functionality in water (positive selection)
As hind limbs became vestigial, flukes as secondary structures formed
Remnant Hind Limbs
External Ear Canal
External Ear Canal
Remnant external ear connected to vestigial bands of muscle
Internal ear canal and tympanic membrane evolved to detect the high-pitch signal of other mermaids, replacing remnant external ear