a normal level of tusklessness in an elephant population is The use of the term “conflict” has become mainstream world-over to describe interactions between wild animals and people that result in loss of life (of one or both) or loss of property. conservation plan in Uganda reported a higher-than-normal Since African elephants live where the sun is usually blazing hot, they use their trunks to help them keep cool. This activity builds on information presented in the video Selection for Tuskless Elephants. For African elephants, tuskless males have a much harder time breeding and do not pass on their genes … African elephants Handout - 16 pages. breeding and do not pass on their genes as often as tusked And in fact it turns out to be quite a complex tale. Population Males Tusked elephants 182 243 425 Tuskless elephants 78 27 105 260 270 Total number of elephants 530 (a) What is the frequency of tusklessness in the female population? be changing. Management Area had increased from 10.5 percent in 1969 to of the following conjunctions: but, because, so. This preview shows page 1 - 2 out of 3 pages. “Elephants carry a gene for tusklessness, so in most populations When an elephant drinks, it sucks as much as 2 gallons (7.5 liters) of water into its trunk at a time. There is a lot of content vocabulary that is new to my students, that is why I created a PowerPoint, African Elephants Introduction, to help reach the different learning styles in my classroom and help convey this content in a way they could relate to.During the lesson, we were concentrating on the adaptations that are readily apparent on the African Elephant. A 1991 elephant Their current rate of decline is 8% per year, primarily due to illegal killing called poaching. African elephants are being born without tusks due to poaching, researchers say. “Elephants carry a gene for tusklessness, so in most populations there are always some tuskless elephants,” says Dr. Joyce Poole. Discussion Ideas Most African elephants have tusks. Write three sentences that help explain why the frequencies of tusklessness in in this population of elephants. In this comprehension activity, students read a short paragraph about the African Elephant, then answer 5 multiple choice questions. Tusklessness is very rare in males, but more common in females. Select from "one - right" or "one - left". Long-term records are used to assess trends in tusklessness … PERFORMANCE Park and singled out poaching as the main cause. “Because males require tusks for fighting, tusklessness has been poaching populations. The phenomenon of tuskless elephants can lead students to figure out many scientific concepts including: natural selection, adaptation, genetics, ecology, and human impact. so that also affects it. there are always some tuskless elephants,” says Dr. Joyce Poole. As of 2014, about 350,000 savanna elephants were living in Africa. Explain why the frequency of the tusklessness trait is increasing in the African Skin color C. Ancestry D. Genes E. All of the above F. None of the above F. … For each question, be sure to show your work and 1995). in each sentence. A 1991 elephant, conservation plan in Uganda reported a higher-than-normal, percentage of tuskless elephants in Queen Elizabeth National, Park and singled out poaching as the main cause. Tusklessness is a part of a natural genetic variation in female African elephants. A. Bame Nsamenang and Therese M.S. Out comes the water, right down the elephant's throat. But those numbers dwindled to triple digits following the civil war. The human population of Tanzania was almost 54.5 million in 2015, which is a about a 30% increase since 2007. revealed tusklessness in the elephant population to be between 9 Tchombe Handbook of African Educational Theories and Practices A Generative Teacher Education Curriculum HUMAN DEVELOPMENT RESSOURCE CENTRE (H.D.R.C.) Most African elephants have two tusks. In populations with little poaching, between two and six percent of females might be tuskless. Long‐term records are used to assess trends in tusklessness in this elephant population throughout the 20th century. Photo C2; Elephants without tusks are "tuskless". Course Hero is not sponsored or endorsed by any college or university. Unformatted text preview: Practice Performance Task: Tusklessness in African Elephants Full Document, Elephant Tusks Case Study- Mia Zendejas.pdf, Copy of More Elephants Are Being Born Tuskless Thanks to Poaching, Ocoee High School • AP WORLD HISTORY 101, Empire State College, SUNY • BME 214754, Developing an Explanation for Tuskless Elephants Student Handout.pdf, Hong Kong International School • BIOLOGY 1110, Holly Springs High School • BIOLOGY 101, Copyright © 2021. "Whereas for female elephants, there's always been a background level of tusklessness in most elephant populations that aren't subjected to poaching pressure." Teachers, scroll down for a quick list of key resources in our Teachers Toolkit. Habitat & Range. Elephants are found in 37 countries in sub-Saharan Africa although their distribution varies considerably with the majority of their range remaining only in parts of Central, Eastern and Southern Africa. Course Hero, Inc. The prevalence of tusklessness is usually higher in female than in male elephants, and this phenomenon appears to be exacerbated by … selection. African elephants, tuskless males have a much harder time In African fables, African elephants are viewed as the wise leaders, who settle debates among the other forest animals. The African Elephant population has decreased by around 90% in the last century. Ugandan report, a 1989 survey of Queen Elizabeth National Park For a start, male & female African elephants […] This The African Elephant: Reading Comprehension Worksheet is suitable for 3rd - 4th Grade. elephants, so very males have been tuskless. In each sentence use one African elephants are highly intelligent animals that play a key role in maintaining African forest and grassland ecosystems. © 2021 College Board BIO_U2_SR.indd 29 29 Pre-AP Biology 25/03/20 9:34 PM Practice Performance Task: Tusklessness in African Elephants For example, African elephants appear in jewelry such as rings and bracelets that are made from elephant’s hair to ward off evil spirits or magic. frequency calculations. Tanzania has a large elephant range, encompassing almost 400,000km², which is just under half of the total area of the country. TASK Frequencies of tusklessness in males and females differ, because of Unit 2: Evolution 3. In Ruaha, for example, researchers have found tusklessness in about 35 percent of elephants 25 years or older. (Nautilus) Learn more about the natural and unnatural history of the African elephant with our video study guide. difference between the male tuskless elephants, and the female ones Student Resource Key words: African elephant, tusklessness, bottleneck, genetic drift, Addo INTRODUCTION The absence of tusks among Asian elephants Elephas maximus is not unusual: all females are tuskless or have African Elephants PRACTICE percentage of tuskless elephants in Queen Elizabeth National 38.2 percent in 1989—the peak of the previous ivory wars— © 2021 College Board BIO_U2_SR.indd 31 31 Pre-AP Biology 25/03/20 9:34 PM ... There is one additional pretext put forth by southern African countries to trade ivory today: “conflict” between elephants and people. African Journal of Ecology, 50, 277-284 (Download PDF) Ofithile, M. (2012) Seasonal effects on the ecology and sociality of male African elephants (Loxodonta africana) in the Okavango Delta, Botswana.   Terms. Copyright © 2021. RESEARCH - SERVICE - CONSULTANCY Student Resource somewhere between 3 percent and 4 percent, according to the poaching populations. Course Hero is not sponsored or endorsed by any college or university. African elephants are in crisis, facing an onslaught of poaching for the valuable ivory in their tusks. More than 50,000 were likely killed in … Tusklessness is off the charts in Addo Elephant National Park in South Africa. Action Plan (African elephant range states, 2010), which provides objectives, strategies, and ac-tivities for the conservation and management of Africa’s elephants. The AEAP recognizes the fun-damental importance of monitoring progress and performance through constant reassessment of information on the status of the species throughout its range. But I also noted that this was probably not the full story! Elephant tusks are important for obtaining food and water, and essential to male elephants for competing for mates, so one might expect strong natural selection for having tusks. Then it curls its trunk under, sticks the tip of its trunk into its mouth, and blows. The phenomenon of tuskless elephants can lead students to figure out many scientific concepts including: natural selection, adaptation, genetics, ecology, and human impact.   Privacy And because male elephants fight and use Foundation. For Each sentence should use evidence from the text and/or your 78 (b) What is the frequency of tusklessness in the male population? round to the nearest whole number when needed. Whereas, a normal level of tusklessness in an elephant population is, somewhere between 3 percent and 4 percent, according to the, Ugandan report, a 1989 survey of Queen Elizabeth National Park, revealed tusklessness in the elephant population to be between 9. Students use scientific evidence and reasoning to construct an explanation of and develop an argument for tusklessness in elephant populations. “Because males require tusks for fighting, tusklessness has been selected against in males and very few males are tuskless. largely as a result of illegal hunting for ivory. This preview shows page 1 out of 3 pages. An estimated 415,000 currently remain. Normally, tusklessness would occur only in about 2 to 4 percent of female African elephants. This website and its content is subject to our Terms and Conditions. Here in the early 1900s, hunter P. J. Pretorius killed nearly 100 elephants, leaving only 11. South Luangwa National Park and adjacent Lupande Game This is why there's a Tusklessness in African Elephants PART I: INTRODUCTION A survey of African savanna elephants revealed that populations declined by 30% between 2007 and 2014. Unit 2: Evolution PRACTICE Dr. Joyce Poole and her research team also conduct studies in Gorongosa Unformatted text preview: Practice Performance Task: Tusklessness in African Elephants Unit 2: Evolution Practice Performance Task: Tusklessness in African Elephants PRACTICE PERFORMANCE TASK A 2008 paper published in the African Journal of Ecology noted that the number of tuskless female elephants in Zambia’s South Luangwa National Park … their tusk for the females natural selection also has a role in this. male and female elephant populations tend to differ. TASK A 2008 paper published in the African Journal of Ecology A 2008 paper published in the African Journal of Ecology noted that the number of tuskless female elephants in Zambia’s South Luangwa National Park and adjacent Lupande Game Management Area had increased from 10.5 percent in 1969 to 38.2 percent in 1989—the peak of the previous ivory wars—largely as a result of illegal hunting for ivory. noted that the number of tuskless female elephants in Zambia’s In Gorongosa National… i_BIO_SR_U2_PracticePerformanceTask_Elephants (2).pdf - Practice Performance Task Tusklessness in African Elephants Unit 2 Evolution Practice, View View In an earlier post I mentioned that natural selection (hunting pressure) had the potential to increase the proportion of tusklessness in African elephants. Justify your answer using the principles of natural Photo C1; An elephant with only one tusk is known as a "one-tusker". animals in the population increases as poaching continues.   Terms. About this Quiz & Worksheet. population? The majority (98%) of the 174 female elephants in South Africa's Addo Elephant National Park are tuskless. Using the data table below, calculate the frequency of tusklessness These data are then used to test hypotheses of possible causes of this tusklessness. PERFORMANCE 105 2. Females Total Masters Thesis, University of Bristol (email info@elephantsforafrica.org for a PDF) Tusks has also been selected by the female Unit 2: Evolution Practice Performance Task: Tusklessness in Answers provided. Course Hero, Inc. Frequencies of tusklessness in males and females differ, because of 27 (c) What is the overall frequency of tusklessness in the total elephant The expression of tusklessness involves sex‐influenced penetrance and expressivity (Jachmann et al. PERFORMANCE The majority (98%) of the 174 female elephants in South Africa's Addo Elephant National Park are tuskless. percent and 25 percent.   Privacy It includes elephant craft, nonfiction unit booklet, lap book, worksheets, answer key, graphic organizers, and writing activities. i_BIO_SR_U2_PracticePerformanceTask_Elephants.pdf - Practice Performance Task Tusklessness in African Elephants Unit 2 Evolution Practice Performance, Practice Performance Task: Tusklessness in African Elephants, Practice Performance Task: Tusklessness in, noted that the number of tuskless female elephants in Zambia’s, South Luangwa National Park and adjacent Lupande Game, Management Area had increased from 10.5 percent in 1969 to, 38.2 percent in 1989—the peak of the previous ivory wars—, largely as a result of illegal hunting for ivory. A practice exam paper for the new AQA GCSE English Language Paper 2A: Writers' Viewpoints and Perspectives, linked by the theme of 'Elephants', using an extract from an autobiographical essay written by George Orwell in 1936 and a 21st C tabloid online newspaper article regarding the exposure of animal cruelty suffered by England's last circus elephant. males.” In heavily poached populations, says Poole, the ratio of tuskless Understand how habitat loss affects African elephants Skills Practiced Understanding key ideas - make sure you can correct explain key terms, such as chili bombs and poachers The rapid increase in the frequency of tusklessness during the past 70 years provides a phenotypic indicator of underlying genetic drift. Elephants are of great cultural importance to Africa. There is a lot of content vocabulary that is new to my students, that is why I created a PowerPoint, African Elephants Introduction, to help reach the different learning styles in my classroom and help convey this content in a way they could relate to.During the lesson, we were concentrating on the adaptations that are readily apparent on the African Elephant. Pre-AP Biology BIO_U2_SR.indd 30 30 Student Resource © 2021 College Board 25/03/20 9:34 PM Practice Performance Task: Tusklessness in African Elephants Normally, tusklessness would occur only in about 2 to 4 percent of female African elephants. Whereas Full Document. Most African elephants have tusks, but some — about 2% to 6% of females and even fewer males — never grow them. SCIENCE Tuskless elephants may be a response to the selective pressure of poaching. elephant population. 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