scholarly journals Cuticular hydrocarbons as potential mediators of cryptic species divergence in a mutualistic ant association

2019 ◽  
Vol 9 (16) ◽  
pp. 9160-9176 ◽  
Author(s):  
Juliane Hartke ◽  
Philipp P. Sprenger ◽  
Jacqueline Sahm ◽  
Helena Winterberg ◽  
Jérôme Orivel ◽  
...  
Keyword(s):  
Cryptic Species ◽  
Cuticular Hydrocarbons ◽  
Species Divergence ◽  
Ant Association

scholarly journals Intraspecific and Intracolonial Variation in the Profile of Venom Alkaloids and Cuticular Hydrocarbons of the Fire AntSolenopsis saevissimaSmith (Hymenoptera: Formicidae)

2012 ◽  
Vol 2012 ◽  
pp. 1-10 ◽  
Author(s):  
Eduardo Gonçalves Paterson Fox ◽  
Adriana Pianaro ◽  
Daniel Russ Solis ◽  
Jacques Hubert Charles Delabie ◽  
Bruno Cunha Vairo ◽  
...  
Keyword(s):  
Cryptic Species ◽  
Cuticular Hydrocarbons ◽  
Native Species ◽  
Geographical Location ◽  
Fire Ants ◽  
Fire Ant ◽  
The World ◽  
Chemical Profiles ◽  
Chemical Characters ◽  
Neotropical Ants

Fire ants are aggressive Neotropical ants that are extensively similar in general biology and morphology, making species identification difficult. Some fire ant species are top-rated pests spreading throughout the world by trade vessels. Many researchers attempted to sort between invasive and native species by using chemical characters, including patterns of venom alkaloids. The present study is the first to report intraspecific variation in some chemical characters, namely, cuticular hydrocarbons and venom alkaloids, within the Brazilian fire ant speciesSolenopsis saevissimaand also reports on within-nest variations among members of different castes. Two different haplotypes (cryptic species) ofS. saevissimawere clearly identified, one presenting a predominant combination of the venom alkaloidscis- andtrans-2-methyl-6-undecylpiperidine with the cuticular hydrocarbons C23, 3-Me-C23, 10-C25 : 1, C25, and 3-Me-C25, and the other a predominant combination ofcis- andtrans-2-methyl-6-tridecenylpiperidine with predominance of 12-C25 : 1, C25, 11-Me-C25, 3-Me-C25, 13-C27 : 1, C27, and 13-Me-C27. Intranest variations revealed that the proportions among these compounds varied sensibly among workers of different sizes, gynes, and males (no alkaloids were detected in the latter). Larva contained vestiges of the same compounds. The recorded chemical profiles are quite different from previous reports withS. saevissimasamples from São Paulo. The finds thus support other recent claims thatS. saevissimaincludes cryptic species; the study, moreover, adds the find that they can occur in the same geographical location.

Identification of sibling species in the genus Eucyclops from water-bodies of Ukraine and Russia using crossbreeding studies

2014 ◽  
Vol 25 (1-2) ◽  
pp. 61-68 ◽  
Author(s):  
V. I. Monchenko ◽  
L. P. Gaponova ◽  
V. R. Alekseev
Keyword(s):  
Cryptic Species ◽  
River Basin ◽  
Black Sea ◽  
Species Complex ◽  
River Basins ◽  
Water Bodies ◽  
Similar Species ◽  
Basin Water ◽  
Different Populations ◽  
Baltic Sea Basin

Crossbreeding experiments were used to estimate cryptic species in water bodies of Ukraine and Russia because the most useful criterion in species independence is reproductive isolation. The problem of cryptic species in the genus Eucyclops was examined using interpopulation crosses of populations collected from Baltic Sea basin (pond of Strelka river basin) and Black Sea basin (water-reservoires of Dnieper, Dniester and Danube rivers basins). The results of reciprocal crosses in Eucyclops serrulatus-group are shown that E. serrulatus from different populations but from water bodies belonging to the same river basin crossed each others successfully. The interpopulation crosses of E. serrulatus populations collected from different river basins (Dnipro, Danube and Dniester river basins) were sterile. In this group of experiments we assigned evidence of sterility to four categories: 1) incomplete copulation or absence of copulation; 2) nonviable eggs; 3) absence of egg membranes or egg sacs 4) empty egg membranes. These crossbreeding studies suggest the presence of cryptic species in the E. serrulatus inhabiting ecologically different populations in many parts of its range. The same crossbreeding experiments were carries out between Eucyclops serrulatus and morphological similar species – Eucyclops macruroides from Baltic and Black Sea basins. The reciprocal crossings between these two species were sterile. Thus taxonomic heterogeneity among species of genus Eucyclops lower in E. macruroides than in E. serrulatus. The interpopulation crosses of E. macruroides populations collected from distant part of range were fertile. These crossbreeding studies suggest that E. macruroides species complex was evaluated as more stable than E. serrulatus species complex.

Sign in / Sign up

Export Citation Format

Share Document