2019 Strickland Memorial Lecture


At the University of Alberta, Edmonton, on Friday, March 22, 2019. 
Refreshments at 3:30 pm, Strickland Lecture at 4:00-5:00 pm in CCISS L1-140, CCIS Building.

 
The lecture will be given by:
Dr. Greg Edgecombe
The Natural History Museum
London, U.K.


Title: Arthropod Evolution: Integrating Fossils, Morphology and Molecules.

Abstract: A decade ago, arthropod phylogeny was described as “chaos”, early molecular trees often being in conflict with each other or with morphology. The picture stabilised considerably as gene and taxon sampling increased, and most of the deep nodes in the arthropod tree now have broad consensus.  Alternatives to current phylogenomic hypotheses are either based on a complete rejection of molecular evidence (e.g., an alliance between hexapods and myriapods rather than crustaceans) or show properties that are consistent with systematic error (such as myriapods grouping with chelicerates). Gene expression data have strengthened the homology of various systematically important characters, such as the transformation of an ancestral biramous limb into a mandible in Mandibulata. New discoveries from Cambrian fossils known from varied styles of exceptional preservation (including Burgess Shale-type compression fossils, phosphatised larvae, and Small Carbonaceous Fossils) have allowed the sequence of character acquisition in the arthropod stem group to be resolved and date deep splits in the arthropod crown group to the early Cambrian.  Probabilistic methods developed for molecular dating permit comparisons of estimated rates of morphological and molecular evolution during and after the main window of the Cambrian explosion, as well as “morphological clock” estimates of evolutionary rates and divergence dates for wholly extinct groups, like trilobites. Major open questions in arthropod evolution are the interrelationships of arachnid orders, the sequence of crustacean sister groups to Hexapoda, and the identities and divergence dates for fossils in the stem lineages of the great terrestrial radiations, notably hexapods and myriapods.



 Annual Strickland Dinner 2019:

Friday March 22, 2019, following the Strickland Lecture. 
Main Dining Room, The University Faculty Club, Saskatchewan Drive. 
Cocktails (No-Host Bar) at 5:300 pm (open until 9:00 pm), supper to follow at 6:300 pm. In addition to food and beverages, there will be door prizes, Big Mac Award judging, and the always entertaining Strickland Follies for entertainment.

Buffet Menu:

Salads: Caesar Salad, Mixed Green Salad, Coleslaw, Potato Salad, Tomato Salad (a variety of dressings and sauces will be available)
Hot items: Breast of Chicken with Red Wine & Mushroom Sauce, Filet of Salmon with Spinach Hollandaise Sauce, Pasta (gluten-free) with Vegan Herbed Tomato Sauce, Potatoes, Rice, Pasta (side dishes), Fresh Steamed Mixed Vegetables
Desserts: Variety of Cakes and Pies, Fresh Fruit Platter, Cheese Platter with Crackers

Prices: $60.00 for faculty and non-students, $55.00 for students. 


Reservations: 
 
Reservations may be made through Dr. Maya Evenden
email: (mevenden@ualberta.ca) phone: 780-492-1873
 
Reservations should be made 
via email to hold places, but please 
mail your cheques made out to University of Alberta, 
deadline is March 18th, 2019. 
    Maya Evenden
   Department of Biological Sciences
   CW-405 Biological Sciences Building
   University of Alberta
   Edmonton, Alberta T6G 2E9
   CANADA 

or cash delivered to Maya at: 
    B-428 in Biological Sciences Building.