Abstract


PREDICTORS OF GENETIC STRUCTURE OF MARINE ORGANISMS IN THE INDO-AUSTRALIAN ARCHIPELAGO

The Indo-Australian Archipelago occupies about 4% of the planet’s surface and is a hotspot of marine biodiversity. Under current and predicted future anthropogenic pressures many habitats and species in this region are at risk. Understanding population connectivity and structuring can help predict impacts of global change. This study used a meta-analysis to investigate the key predictors of genetic structuring of marine taxa in the region. The predictors included biological traits such as pelagic larval duration (PLD), egg type, reproductive strategy and adult life habit and geographical aspects (maximum distance across study and number of biogeographic regions). We used the number of population clusters as the measure of genetic structure. A generalised linear model was used to estimate the significant predictors of genetic structure. From 55 peer-reviewed publications 84 independent observations were sourced. The generalized linear model found that the biogeographic region (relative importance: 0.90) and that PLD (relative importance: 0.85) were the best predictors of genetic structure. This study highlights the importance of geographical factors in affecting genetic structure and connectivity in complex seascapes.

Authors

Hernawan, U., Centre for Marine Ecosystem Research, School of Natural Sciences, Edith Cowan University, Australia, u.hernawan@ecu.edu.au

McMahon, K., Centre for Marine Ecosystem Research, School of Natural Sciences, Edith Cowan University, Australia, k.mcmahon@ecu.edu.au

Kendrick, G., School of Plant Biology and The Ocean Institute, The University of Western Australia, Australia, gary.kendrick@uwa.edu.au

van Dijk, K., School of Earth and Environmental Sciences, The University of Adelaide, Australia, korjent.vandijk@adelaide.edu.au

Lavery, P., Centre for Marine Ecosystem Research, School of Natural Sciences, Edith Cowan University, Australia, p.lavery@ecu.edu.au

Details

Oral presentation

Session #:007
Date: 2/25/2015
Time: 11:30
Location: Albeniz (Floor -2)

Presentation is given by student: Yes