Microsatellite analysis supports the existence of three cryptic species within the bumble bee Bombus lucorum sensu lato

The relationship between the North American bumble bee species Bombus moderatus Cresson and the European and Asian species in the subgenus Bombus sensu stricto has long been in question. Bombus moderatus has either been regarded as a distinct species or has been synonymized with B. lucorum (L.). We surveyed 10 Bombus s.str. species at 26 enzyme loci, using horizontal and vertical starch-gel electrophoresis. We found that B. moderatus differs from B. lucorum at three loci but is identical in these and all other loci surveyed with B. cryptarum (Fabricius) and B. magnus Vogt. The present distribution of B. moderatus, together with the observation that its closest relatives are the European B. cryptarum and B. magnus and the Asian B. hypocrita Pérez, suggests that differentiation occurred after dispersal to North America via Beringia.

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Molecular phylogenetics and microsatellite analysis reveal cryptic species of speckled dace (Cyprinidae: Rhinichthys osculus) in Oregon’s Great Basin

Molecular Phylogenetics and Evolution ◽

10.1016/j.ympev.2014.04.027 ◽

2014 ◽

Vol 77 ◽

pp. 238-250 ◽

Cited By ~ 5

Author(s):

Kendra Hoekzema ◽

Brian L. Sidlauskas

Keyword(s):

Cryptic Species ◽

Great Basin ◽

Molecular Phylogenetics ◽

Microsatellite Analysis ◽

Rhinichthys Osculus ◽

Speckled Dace

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

Ecology and Noospherology ◽

10.15421/031406 ◽

2014 ◽

Vol 25 (1-2) ◽

pp. 61-68 ◽

Cited By ~ 1

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.

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