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Some announcements…

Lab is worth 140 points, including50 points for participation and attendancePoints off for tardiness and absences

Exams include material from text, other readings,lecture and lab.

Study guide to exam will be online by next Thursday beforefield trip

5-minute presentations are worth 5 points extra credit.

Today:

- Martin Marquez presentation (online, too)-Invertebrates - Sponges & Cnidarians

-The ultimate cooperators!

Animal Beginnings: The Protozoans• Fig. 5.2, A planktonic foraminiferan, Globigerina. (a) Drawing of an intact

animal emphasizing extended pseudopodia. From Brady 1884. (b) Photograph ofGlobigerina test.

Chapter 5

Defining Animals

• Members of kingdom Animalia aretypically distinguished from the Protista by

• the presence of contractile muscles,• signal-conducting neurons,• and multicellular bodies

Chapter 5

Other characteristics (=characters) of animals:

Ingest food particles for nutrition (heterotrophic)Greater dependence on sexual reproduction (comp with protists)

25 phyla of animals are significantly represented in marine environment (table 5.1, text)

13 phyla exclusively marine, 7 phyla 50% or more marine

20 phyla (80%) marine or mostly marine

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Chapter 5

Sponges (Phylum Porifera)

Multicellular (loosely aggregated cells)No true tissues (totipotent cells = havepotential to become any other cell type)Pores, holes and channelsMostly marineInternal support with spicules (of calciumcarbonate, silica, spongin)

Sponges

•Fig. 5.6 A group of marine• finger sponges and•several of the specialized•cell types that make•up the sponge wall.

Chapter 5

Sponges (Phylum Porifera), more characters…

Aquiferous system (pump water through theirbodies) for feeding, reproduction, gas andnutrient exchangeAsexual and sexual reproductionMany symbioses with bacteria and otheranimals!(video clip on shrimp in sponge cavities)

Field Trip information! US State Department Public Announcementhttp://travel.state.gov/travel/cis_pa_tw/pa/pa_2100.html

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C A M P U S A L E R T !January 31, 2005

Sergeant Eugene V. Mejia Office #: 520-626-8007 Pager #: 520-218-5457

Travel Warning

The University of Arizona has been made aware of a warning on travel along the MexicanBorder due to an unstable criminal situation. The warning dated January 26, 2005, anddistributed by the U.S. Department of State indicates, “U.S. citizens should be aware of therisk posed by the deteriorating security situation.” The public announcement will expire onApril 25, 2005.

“Violent Criminal activity along the U.S.-Mexico Border has increased as a product of a warbetween criminal organizations struggling for control of the lucrative narcotics trade alongthe border.”

The UAPD and the University of Arizona Dean of Students Office would like to warnstudents and staff of the potential dangers involved in travel along the indicated area.Visiting the U.S. State Department website at www.state.gov or contacting your U.S.consulate before you travel is suggested.

If you have questions on travel safety please contact the UAPD crime prevention officefor information at 621-4219.

Posted on course web page “announcements”

ASSUMPTION OF RISK AND RELEASE FORM

THIS IS A RELEASE OF LEGAL RIGHTS -- READ AND UNDERSTAND BEFORESIGNING.

Name of Applicant:__________________________________________

Date of Birth:_____________________________(If Applicant is under 18 years of age, a parent or legal guardian must also read and sign this form.)

Program:___________________________________

I hereby agree as follows:

1. Risks of Study Abroad. I understand that participation in the University of ArizonaStudy Abroad Program specified above (the "Program") involves risks not found in studyat the University. These include risks involved in traveling to and within, and returningfrom, one or more foreign countries; foreign political, legal, social, and economicconditions; different standards of design, safety and maintenance of buildings, publicplaces and conveyances; local medical and weather conditions; and other mattersdescribed on a separate Program Risk form which I have received, reviewed, andinitialed, and which is incorporated by reference in this Release Form. I have made myown investigation and am willing to accept these risks.

2. Institutional Arrangements. I understand that the University does not representor act as an agent for, and cannot control the acts or omissions of, any host institution,host family, transportation carrier, hotel, tour organizer

For entire release form, see course web page “announcements”

Sign release form in lab on Monday

…

Field Trip Update• Must tell me (KM) or TA by Monday in lab Feb 7

at latest if you are not going on field trip, $8.50due in lab for one dinner.

• No-shows on field trip lose 50 points• Sign slip acknowledging risk and presentation• Sign in today that you heard presentation• $50 refund if you don’t go (credit to account)• Alternative assignment worth 100 pts (17% of

grade)

Alternative Assignment to Field Trip (100 pts)•lab practical on invertebrate classification andecology in lab, Feb 14th (50 pts), AND•10 page research paper on pre-approved topic(summarizing 6 minimum research articlesfrom primary lit) (40 pts) Due Feb 28, AND•Public presentation on paper topic (webpage,or 5-minute presentation in lecture/lab, orprinted flyer/brochure) due Feb 28th (10 pts)

posted on course webpagehttp://eebweb.arizona.edu/COURSES/Ecol183/index1.html

Questions?

Contact me at 626-5076, mangin@u.arizona.edu

To summarize field trip update:

•Field trip is optional (due to public announcement)•Alternative assignment is rigorous, and worth 17% of grade•MUST tell me or TA in lab Feb 7 if you are NOT going•We will assume that you ARE going if we don’t know by end ofyour lab next Monday•No $50 credit if we don’t know by Monday. Feb 7 lab, and minus 50 points if you are a no-show for field trip•Course website has public announcements