Hurst,L.D., Hoekstra,R.F. 1994. Shellfish genes kept in line. Nature 368:811-812.

Coenen,A., Debets,A.J.M., Hoekstra,R.F. (1994). Additive action of partial heterokaryon incompatibility (partial-het) genes in Aspergillus nidulans. Curr.Genet.26:233-237.

Nauta,M.J.,Hoekstra,R.F. (1994). Evolution of vegetative incompatibility in filamentous ascomycetes. I.Selection models. Evolution 48:979-995.

Hoekstra,R.F. (1994). Population genetics of filamentous fungi. Antoni van Leeuwenhoek 65:199-204.

Hammerstein,P., Hoekstra,R.F. (1995). Mutualism on the move. Nature 376:121-122.

Hermanns,J., Debets,F., Hoekstra,R.F., Osiewacz,H.D. (1995). A novel family of linear plasmids with homology to plasmid pAL2-1 of Podospora anserina. Mol.Gen.Genet. 246:638-647.

Coenen,A., Croft,J.H., Slakhorst,M., Debets,F., Hoekstra,R.F. (1996). Mitochondrial inheritance in Aspergillus nidulans. Genetical Research 67:93-100.

De Visser,J.A.G.M., Hoekstra,R.F., Van den Ende,H. (1996). The effect of sex and deleterious mutations on fitness in Chlamydomonas. Proc.Roy.Soc.Lond.B 263: 193-200.

Hoekstra,R.F. (1996). Horizontal transmission in fungal populations. In: Bos,C.(ed.) Fungal Genetics, pp.337-348, Marcel Dekker, New York.

Coenen,A., Kevei,F., Hoekstra,R.F. (1997). Factors affecting the spread of double-stranded RNA viruses in Aspergillus nidulans. Genetical Research 69:1-10

De Visser,J.A.G.M., Hoekstra,R.F., Van den Ende,H. (1997). An experimental test for synergistic epistasis and its application in Chlamydomonas. Genetics 145: 815-819

Hoekstra,R.F., De Visser,J.A.G.M., Debets,A.J.M. (1997). The role of sexual reproduction in the elimination of deleterious mutations. J.Reprod.Development 43,Suppl.: 7-8

van Diepeningen,A.D., Debets,A.J.M., Hoekstra,R.F. (1997). Heterokaryon incompatibility blocks virus transfer among natural isolates of black Aspergilli. Curr.Genet. 32: 209- 217

De Visser,J.A.G.M., Hoekstra,R.F., Van den Ende,H. (1997). Test of interaction between genetic markers that affect fitness in Aspergillus niger. Evolution 51:1499-1505

De Visser,J.A.G.M., Hoekstra,R.F. (1998). Synergistic epistasis between loci affecting fitness: evidence in plants and fungi. Genet.Res.71:39-49.

Diepeningen A.D.van, A.J.M. Debets and R.F. Hoekstra (1998) Intra- and interspecies virus transfer in Aspergilli via protoplast fusion. Fungal Genet. Biol. 25:171 - 180

Gaag van der M., Debets A.J.M., Osiewacz H.D. and R.F. Hoekstra (1998). The dynamics of pAL2-1 homologous linear plasmids in Podospora anserina. Mol. Gen. Genet. 258:521-529

Fiers M., van den Bosch F, Debets AJM and R.F. Hoekstra (1999). The dynamics of a senescence plasmid in fungal populations. Genet. Res. 74:13 - 22

Graffelman,J. and R.F.Hoekstra (1999). A statistical analysis of the effect of warfare on the human secondary sex ratio. Human Biology In press

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Objective: To determine whether the enemies of herbivores can shape the evolution of plant traits. Specifically, do ants that visit extrafloral nectaries of plants and kill the plants' herbivores shape the evolution of the extrafloral nectary trait?

Duties: Maintaining experimental treatments (ant exclusions, fertilization, pesticide spraying) and collecting data (counting ants, herbivores, spiders; measuring plant growth, estimating damage to plants using a digital camera to photograph leaves). The plants grow on steep canyon walls--it's not dangerous, but you have to be in good shape to handle the hiking.

Site: Sonoran Desert, Southeastern Arizona. The plant is a native wild cotton, Gossypium thurberi.

Facilities: The Santa Rita Experimental Range is owned by the Forest Service and managed by the University of Arizona. The cabin has running water, showers, fridge, gas stove, and a swamp cooler. There is a telephone in the cabin, and we have internet access. We are 20 miles from the nearest town (Green Valley, a retirement community), and I am the only permanent researcher at the Range.

Compensation: I will pay for room and board, plus $350/month stipend.

I'm looking for someone who can start as soon as possible and work until Thanksgiving.

Please contact:

Jenn Rudgers
Population Biology Graduate Group
University of California-Davis
jarudgers@ucdavis.edu
(520) 393-1953 (in Arizona)

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The Department of Botany and Plant Sciences, University of California, Riverside, invites applications for a tenure-track position at the rank of Assistant Professor with a title in the Agricultural Experiment Station. The position will be available July 1st, 2000. The appointee will be expected to develop a vigorous, innovative, independent research program that employs contemporary methods and analytical tools to address fundamental questions in plant systematics and evolution. Applicants must possess a Ph.D. degree and preferably have 2 years of postdoctoral training in systematics or a closely related field. The successful candidate will teach at the undergraduate and graduate level, and supervise graduate students. We are particularly interested in a scientist who is willing to learn and subsequently teach a course about California flora. UCR is a dynamic, growing institution with an abundance of opportunities for interdisciplinary research and student training facilitated by interdepartmental graduate programs and research centers.

Review of applications will begin December 1st, 1999 and continue until the position is filled. Applicants should send: (1) a curriculum vitae, (2) a statement of research interests, (3) the names and addresses of at least three references to:

Additional information about the department and the position is available at: http://cnas.ucr.edu/~bps/homepage.htm

University of California, Riverside is an equal opportunity/affirmative action employer

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Turpentine Creek Wildlife Refuge

is a volunteer-run, not-for-profit Humane Society for Big Cats (and some other animals). Among our family are 54 tigers, 19 lions, 23 cougars, and 2 leopards. These cats are unwanted products of the private trade in exotic animals. Most of them would have been destroyed if Turpentine Creek did not give them a home.

Turpentine Creek is accepting applications from those interested in full-time staff positions at the refuge. BS or BA in an animal-related discipline is preferred, but all disciplines are encouraged to apply.

Job description:

Animal Keeper position. Duties include cleaning cages, habitats and compound; feeding and medicating animals; assisting with maintenance, upkeep, and habitat construction; participating in occasional public promotions. Rewards include developing relationships with many of the one hundred Big Cats, and the chance to work "hands-on" with some of them.

Compensation:

This is a volunteer position, with no pay; however Turpentine Creek will provide you free housing on the refuge in a comfortable cottage, which has heat, a/c, utilities, full bath, kitchen, and a washer and dryer.

New positions begin:

February 1, 2000; positions last for seven months, with an option to extend.

Deadline for applications: November 1, 1999.

To apply:

Send your resume and cover letter to:

Volunteer Program
Turpentine Creek Wildlife Refuge
239 Turpentine Creek Lane
Eureka Springs, AR 72632

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