Abstract The following will be discussed: the definition of sexuality in primates, characteristics in males and females, competition for potential mates, females sexual peak (visible characteristics), infanticide males, alloparenting, and motherly affection and fatherly affection. There will be greater elaboration on competition for potential mates, and male/female nurturing. The listed concepts do play a role in the evolution of primate sexuality and social organizations, but competition and male/female nurturing are the true reasons why their evolution has changed over years. There has to be competition of mates, in order to reproduce an abundance of offspring and without proper nurturing an infant can develop emotional and psychological
After so many years and incidents, the captivity of killer whales or orcas (Orcinus orca) merely for entertainment purposes should be prohibited. The limitation of space and most important the deprivation of freedom modify the behavior of orcas making them aggressive, even depressive and prone to hurt themselves and the humans who interact with them. With a brain four times larger than the human brain, the killer whales are among the most intelligent species in the world (Kirby 2). Studies have shown that their brains are more complex than human’s. The orcas’ brains have an “extra” part that makes them considerable more emotional.
(killerwhale.org) Furthermore, they have concluded that any scientific study of orcas would be best done in their natural habitat verse aquariums. Multiple factors would affect their behaviors and many concerns have been brought to peoples attention about the effects orcas face by leaving the wild. One concern for orcas that are born in the wild then taken into captivity is that they live in pods, and their families operate much as if a human family would, with strong attachments and emotions. Tearing these creatures away from their family members has much to do with the psychological effect on them. Several incidents have been reported over the past years that make people question the continued captivity of orcas.
Bailie Tullock Mimia Kearl English 101 October 4, 2012 Compare and Contrast Essay As the world has evolved science has advanced to braking down the various elements that specify different organisms. Science has been able to classify and categorize every species of life. Most people aren’t first-class biologists, so it’s difficult to tell the difference between two given animals. For example reptiles and amphibians, its a bit puzzling to make out which is which, when these two classes are placed in the same realm. After a few key points, it’ll come into view that one species is clearly more dominate than the other.
Based on the pictures that we saw, there was a lot of wild life that didn’t depend too much on water. We developed the hypothesis that construction nearby is not having an adverse effect on the Turtle Bay Estuary. We predicted the estuary will fall around 4 ppt, making it safe to live in. Method To properly assess the conductivity based on the salinity, we created six different solutions with a certain balance of the Turtle Bay Estuary stock sample and distilled water. Using a conductivy probe for each sample, we will determine the salt content of the water.
The offspring’s from minnows have different combinations of genes that present a challenge for the black spot 8. Why did the sexually-reproducing fish suddenly become more susceptible to disease following the severe drought? The population became severely reduced that the fish turned to inbreeding which made them more clone like 9. What experiment did Robert Vrijenhoek conduct that reversed this trend? Robert added more fish to the pool to increase their genetic diversity Origin of Sexual Reproduction 10.
Females lay 8,000 to 35,000 eggs at a time and usually breed twice a year. This increase in number will continue to cause an expansion of the species into new areas, allowing them to feed on a large volume and variety of prey, and thus introducing the possible displacement of many native species. The introduction of this species has caused a massive threat on Australia’s native species as a result of the following: * The Cane Toads out-compete native fauna such as small skinks and frogs for
Interestingly in the Rutter study those who were adopted before the age of 6 months tended to show a more marked improvement compared to their older counterparts. This seems to coincide with Schaffer and Emerson’s Glaswegian infant study which showed that children below the age of 6 months treat everything indiscriminately having not formed an attachment. So naturally by definition the Romanian infants below 6 months couldn’t and didn’t suffer privation and so therefore didn’t suffer the effects of it later. However with the Rutter study it is hard to establish cause and effect. Many of the children suffered cognitive deficits but this might have rather been a result of a lack of substantial intellectual stimulation within the institutions as opposed to privation.
What: Grey seals are hunting bigger prey, forensic studies have implicated that grey seals have been killing smaller seals and porpoises, biologist studies of grey seals habitat will change. When: Knowledge of this became known in 2013 and today is continuing to grow. Where: the North Sea and shores in areas surrounding Europe Why: To inform biologist and other scientists of the new found discovery of grey seals and the new addition to their diet and how it affects the ecosystem. Topic: Extremely
The adult panthers of the outcrossed breed where again backcrossed with the Florida panthers. The resultant offspring showed 50% and above of natural characteristics of the native panthers. Survival rates did not differ between male and female kittens. “This result was as expected due to the lack of sexual dimorphism among kittens, although some authors have suggested sex-specific differences in survival of puma kittens” (Logan and Sweanor, 2001). “Average heterozygosity positively influenced kitten and older panther survival, whereas index of panther abundance negatively influenced kitten survival”.