Male-male competition

Research in the Behavioural Ecology Research Group (Monash University, Australia), led by Associate Professor Bob Wong, focuses on the evolution of animal mating systems and behaviour. We have, for instance, investigated the impacts of environmental change on animal behaviour and the evolutionary process, and how investment in sex influences reproductive strategies and biological diversity.

Vargskär island in Tvärminne archipelago.

Members of the Group have had a long association with Tvärminne Zoological Station. In this respect, the Group has also been working in close collaboration with Prof. Kai Lindström (and others) for over a decade on sexual selection and parental care in fish. The work in Tvärminne has involved both field and laboratory-based research investigating the role of environmental factors (e.g. salinity, predation risk, competition, resource quality and density) on male and female mating behaviour. Our work has also included student research, with Australian-based students undertaking experiments on male parental care in sand gobies and sticklebacks.

Catching gsand gobies in shallow water.

In 2017, Bob Wong and Dr. Topi Lehtonen completed a field based experiment in Tvärminne, investigating the role of nesting resource quality and male-male competition on patterns of nest colonisation in male sand gobies. The research involved setting up artificial nesting resources (ceramic tiles) in shallow water near Vargskär Island and manipulating both the quality of the resource (large versus small tiles) and the extent of resource aggregation (i.e. a single nesting resource on its own, or two nesting resources in close proximity) and examining the attributes of the males that subsequently settle into those areas. The findings will contribute to our understanding of how resources and resource competition affect settlement patterns in the wild.

Artificial nesting resource (ceramic tiles) in shallow water (photo: Topi Lehtonen).
Artificial nesting resource (ceramic tile) in shallow water (photo: Topi Lehtonen).
Dr. Topi Lehtonen and Associate Professor Bob Wong on a small boat doing a selfie.
Dr. Topi Lehtonen and Associate Professor Bob Wong on a small boat doing a friedsie (photo: Topi Lehtonen).

Associate Professor Bob Wong, Monash University, Australia.

Read more from:
Bob Wong lab webpage: bobwonglab.org
Topi Lehtonen: sites.google.com/site/lehtonentopi/

Summer is coming

Summer is coming and  we are on our way to sample some Crustaceans (Photo: Niko Nappu 2017).
Summer is coming and we are on our way to sample some Crustaceans (photo: Niko Nappu 2017).

Summer is coming and field activities are increasing at the research stations. In the north there is still a thick cover of snow, but in the south of Finland the students from different faculties and departments are all around, busy with their teachers. Research groups are installing their equipment and starting to execute their fine plans outdoors. The interns have plenty of things on their hands, helping in the research or doing their own research projects.

Wish me good luck and a large sample of crabs (Photo: Niko Nappu 2017).
Wish me good luck and a large sample of crabs (photo: Niko Nappu 2017).
Northern lapwing (Vanellus vanellus) nests can be tracked with a thermal camera and a drone (photo: Niko Nappu 2017).
Northern lapwing (Vanellus vanellus) nests can be tracked with a thermal camera and a drone (photo: Niko Nappu 2017).

The University of Helsinki research stations offer excellent logistics and support for research and teaching. With their long history the stations are able to provide long term environmental background data sets from the Baltic Sea to the north of Finland. The stations have modern infrastructure to support a wide variety of research, from field studies to laboratory analyses. Accommodation and catering services make the stay at the stations easy and comfortable.

This blog is all about the happenings at the University of Helsinki research stations. The stations belong to the RESTAT-station network along with the other Universities’ field stations. Five of the stations form also a HiLIFE-network (Helsinki Institute of Life Sciences) for co-operation. You are welcome to follow the activities of Tvärminne Zoological Station, Lammi Biological Station, Hyytiälä Forestry Field Station, Kilpisjärvi Biological Station and Muddusjärvi Research Station in this blog.

A common www-page is also under construction for the stations. When it is ready you good people will be informed here. Have an interesting summer and do not forget to visit here now and then!