Differential invading potential among cryptic species of a Lessepsian bioinvader, the blotchfin dragonet Callionymus filamentosus
نویسندگان
چکیده
The bioinvasion of the Mediterranean from the Red Sea via the Suez Canal, called Lessepsian bioinvasion, was used as a way to uncover the invading potential of different genetic clades. Populations of blotchfin dragonet Callionymus filamentosus were assessed, based on 2 mitochondrial markers (control region and cytochrome oxidase 1) and 2 nuclear markers (2nd intron of the ribosomal protein S7 and rhodopsin). Populations clustered in 2 mitochondrial clades: one clade included only individuals collected in the Red Sea, while the other included samples from both the Red Sea and the Mediterranean. In contrast, nuclear markers did not separate Red Sea and Mediterranean individuals. We interpret these results as a differential in invading potential of the individuals belonging to the 2 mitochondrial clades. Incomplete lineage sorting in nuclear markers suggests that these 2 groups are at an early stage of differentiation. Thus, the model of Lessepsian bioinvasions may, in some cases, be used to assess ecological differences among non-geographic clades.
منابع مشابه
Lack of a genetic bottleneck in a recent Lessepsian bioinvader, the blue-barred parrotfish, Scarus ghobban.
The present study investigates the genetic diversity of Scarus ghobban, a recently introduced parrotfish in the Mediterranean Sea via the Suez Canal. Two mitochondrial and one nuclear DNA regions were sequenced and phylogenetic relationships investigated, from samples collected from Lebanon and across its natural range. Scarus ghobban clustered in two major clades, Pacific Ocean and Indian Ocea...
متن کاملGenetic cryptic species as biological invaders: the case of a Lessepsian fish migrant, the hardyhead silverside Atherinomorus lacunosus
Marine cryptic species, taxa that are morphologically identical but genetically distinct, may be important and underestimated components of the ecosystem. The understanding of several ecological interactions, such as marine bioinvasions, could be altered by the correct description of the bioinvaders. Here, we have focused our study on the hardyhead silverside, Atherinomorus lacunosus, a Lesseps...
متن کاملThe effects of loading the respiratory pumps on the oxygen consumption of Callionymus lyra.
A comparative study of the respiration of fishes from different ecological niches has shown that certain species are suited for the study of particular aspects of respiratory function because of their structure and physiological adaptations. In this context the study of the generally less active bottom-living forms has advantages where movements of the fish must be limited by the experimental a...
متن کاملPhylogeography of the bluespotted cornetfish, Fistulariacommersonii: a predictor of bioinvasion success?
Biological invasions result in huge ecological and economic impacts; therefore, a great amount of effort is dedicated to predicting the potential success of newly established or candidate bioinvaders. Thus far, over 90 species of fish have entered the Mediterranean Sea via the Suez canal, the so-called Lessepsian bioinvaders. The bluespotted cornetfish, Fistularia commersonii, is remarkable in ...
متن کاملHabitat niche breadth predicts invasiveness in solitary ascidians
A major focus of invasion biology is understanding the traits associated with introduction success. Most studies assess these traits in the invaded region, while only few compare nonindigenous species to the pool of potential invaders in their native region. We focused on the niche breadth hypothesis, commonly evoked but seldom tested, which states that generalist species are more likely to bec...
متن کامل