Lesson5Worksheet

Name: Erasmo Abella Lesson 05 Worksheet – upload to the L05 Dropbox by the due date on the calendar. List A: ● Orangutan ( Pongo pygmaeus ) ● Bonobo ( Pan paniscus ) ● Chimpanzee ( Pan troglodytes ) ● Gorilla ( Gorilla gorilla ) ● Gibbon ( Hylobates lar ) ● Siamang ( Symphalangus syndactylus ) List B: ● Ring-tailed lemur ( Lemur catta ) ● Slow loris ( Nycticebus pygmaeus ) ● Rhesus macaque ( Macaca mulatta ) ● Proboscis monkey ( Nasalis larvatus ) ● Olive baboon ( Papio anubis ) ● Colobus monkey ( Colobus guereza ) List C: ● Gestation/Prenatal Period – include length, # of babies ● Infant Period ● Juvenile Period ● Sexual Maturity – include timing for males and females Question Set: Answer the following short answer questions. Read the instructions carefully and be sure to answer each question thoroughly. --------------------------------------------------------------------------------------------------------------------- 1. [15 points] Pick a primate from List A, a primate from List B, and a life history stage from List C. Indicate your choice and answer the following questions – each with at least 2 sentences. Include at least two references for this question set (a-d). a. [3 pts] What major developmental event(s) characterize the List C stage? What is the relationship between the parent and offspring, when applicable, or how would you be able to tell if a primate was going through this stage? In the juvenile period, the primate goes through a transition phase where they go from infant period to childhood. According to the Lesson 5 lecture, this life history starts after weaning ends. Primates in this stage aren’t sexually mature yet, but they can do basic tasks like finding food. During this period, the infant still relies on the parent in order to grow up, but also learn skills from them for when they become independent. b. [3 pts] What is the timing of the List C stage for your List A primate? What is a unique fact about this stage for your primate? I chose the Gorilla for this question, and according to Rwanda Eco Company and Safaris, they undergo the juvenile stage in their third year, and end at their sixth year. The mothers then become pregnant again after the children are weaned, since they start to ovulate again.

c. [3 pts] What is the timing of the List C stage for your List B primate? What is a unique fact about this stage for your primate? I chose the ring tailed lemur as my second primate. According to Zoo Atlanta, ring-tailed lemurs undergo the juvenile stage a month after they are born. This then ends and they fully become weaned after 5 to 6 months. d. [4 pts] Compare your List A and List B primates for this stage. Is there a difference? What could explain this difference? A big difference that I noticed when doing this was that Gorillas have a longer juvenile period than a ring-tailed lemur. Young gorillas take years to transition from infancy to childhood, while the ring-tailed lemur only takes months. It may be because it relates to the size of their body, where the larger the body, the longer it takes for them to grow. Reference(s): [2 pts] Lesson 5: Life History Stages. c2023. State College (PA): ANTH 022, Penn State University. Rwanda Eco Company and Safaris: Gorilla Reproduction Cycle and Parenting [Internet]. 2023. Kigali (Rwanda): Rwanda Eco Company. Available from: https://rwandaecocompany.com/gorilla-reproduction-cycle/#:~:text=They%20enter%20their%20 juvenile%20period,and%20soon%20become%20pregnant%20again . The Zoo Atlanta Organization: Ring Tailed Lemur [Internet]. 2023. Atlanta (GA): Zoo Atlanta Organization. Available from: https://zooatlanta.org/animal/ring-tailed-lemur/#:~:text=Juveniles%20start%20becoming%20ind ependent%20when,30%20years%20in%20zoological%20settings . --------------------------------------------------------------------------------------------------------------------- 2. [15 points] Pick a different primate from List A, a different primate from List B, and a different life history stage from List C. Indicate your choice and answer the following questions – each with at least 2 sentences. Include at least two references for this question set (a-d). a. [3 pts] What major developmental event(s) characterize the List C stage? What is the relationship between the parent and offspring, when applicable, or how would you be able to tell if a primate was going through this stage? The second life history stage I chose was sexual maturity. According to Life History Stages in Lesson 5 this week, this is the stage in which primates go through puberty, and they develop sexually mature features in their body, which would help them prepare for reproduction. This stage lasts throughout their life. b. [3 pts] What is the timing of the List C stage for your List A primate? What is a unique fact about this stage for your primate?