Find research datasets worth reusing

Figure 1 in Invasion of Eurytemora sibling species (Copepoda: Temoridae) from north America into the Baltic Sea and European Atlantic coast estuaries

Figure 1. Locations of the studied populations of E. affinis and E. carolleeae. Place names are listed in Table 1.

Figure 5 in Invasion of Eurytemora sibling species (Copepoda: Temoridae) from north America into the Baltic Sea and European Atlantic coast estuaries

Figure 5. Distribution of Eurytemora affinis and Eurytemora carolleeae individuals calculated on the base of indices: ind.1, ind.2, ind.3 (see text) (A) for females and (B) for males. Eurytemora affinis from the Gulf of Finland (open squares), from the Gulf of Riga (open triangles) and from the Vistula lagoon (open circles). E. carolleeae from the Gulf of Finland (filled square) and from the Gulf of Riga (filled triangles).

Figure 4 in Invasion of Eurytemora sibling species (Copepoda: Temoridae) from north America into the Baltic Sea and European Atlantic coast estuaries

Figure 4. Chosen morphological characters for analysis of Eurytemora carolleeae (A–C) and Eurytemora affinis (D–F): length and width of furcal branches (A, D), parts of male P5 swimming legs proportions (C, F), female genital segment (B, E).

Figure 3 in Invasion of Eurytemora sibling species (Copepoda: Temoridae) from north America into the Baltic Sea and European Atlantic coast estuaries

Figure 3. Common view of terra tipica Eurytemora carolleeae and Eurytemora affinis (A) E. carolleeae male and (B) E. carolleeae female from Chesapeake Bay; (C) E. affinis male and (D) E. affinis female from the Elbe River.

opennotspecifiedJul 2013View details →

Figure 5. Maximum likelihood trees constructed from mitochondrial cytochrome c oxidase subunit I in Cryptic diversity in coastal Australasia: a morphological and mitonuclear genetic analysis of habitat-forming sibling species

Figure 5. Maximum likelihood trees constructed from mitochondrial cytochrome c oxidase subunit I (left; log likelihood: -399.5730) and nuclear adenine nucleotide transporter intron (right; log likelihood: -12170.8682) sequences of Pyura praeputialis and Pyura doppelgangera sp. nov. Nodal support from 1000 bootstrap replications (> 75%) is indicated next to some branches. Circles indicate regions in which a particular allele was present. For simplicity, allele frequencies are not indicated.

opennotspecifiedJul 2013View details →

Figure 2 in Cryptic diversity in coastal Australasia: a morphological and mitonuclear genetic analysis of habitat-forming sibling species

Figure 2. Pyura doppelgangera sp. nov. A, anal border (view from above); B, anal border (lateral view); C, gonoduct left side; D, an individual specimen collected in Tasmania. Photograph: Carmen Primo; E, the same individual without tunic. Photograph: Carmen Primo; F, dorsal tubercle and lamina with languets; G, internal structure detailing the position of the hepatic gland, dorsal tubercle, gonad on the right side of the body and the gut and gonad on the left side. Scale bars: A-C = 1 mm; D, E = 20 mm; F = 2 mm; G = 10 mm.

opennotspecifiedJul 2013View details →

Figure 1 in Cryptic diversity in coastal Australasia: a morphological and mitonuclear genetic analysis of habitat-forming sibling species

Figure 1. Scanning electron microscope photographs of the siphonal spines of the species comprising the Pyura stolonifera species complex. A, Pyura doppelgangera sp. nov., B, Pyura praeputialis, C, Pyura dalbyi, D, Pyura herdmani, E, P. stolonifera. Scale bars: A = 100 Mm; B, D = 40 Mm; C = 50 Mm; E = 10 Mm.

Figure 10. Canonical variate axes 1 and 2 resulting from a in Molecular and morphometric variation in two sibling species of the genus Praomys (Rodentia: Muridae): implications for biogeography

Figure 10. Canonical variate axes 1 and 2 resulting from a canonical variate analysis comparing the three operational taxonomic units (OTUs) of Praomys misonnei (West Africa, West Central Africa, and Central + East Africa). Two individuals from Nigeria were plotted on the graph. The group centroids (symbols) and extreme limits of each scatter plot of points are indicated.

Figure 2 in Molecular and morphometric variation in two sibling species of the genus Praomys (Rodentia: Muridae): implications for biogeography

Figure 2. Schematic drawings of a skull (in dorsal, ventral, and lateral views) and mandibule of of Praomys, showing the 21 craniodental variables recorded in this study (see the Material and methods section for the definitions of these measurements).

Figure 3 in Molecular and morphometric variation in two sibling species of the genus Praomys (Rodentia: Muridae): implications for biogeography

Figure 3. Phylogeny of cytochrome b haplotypes resulting from maximum-likelihood (ML) analysis (GTR + I + G model). Numbers at nodes represent ML bootstrap support (1000 replications), and Bayesian posterior probabilities.

Figure 6 in Molecular and morphometric variation in two sibling species of the genus Praomys (Rodentia: Muridae): implications for biogeography

Figure 6. Minimum spanning network of Praomys misonnei (A) and Praomys tullbergi (B) cytochrome b haplotypes. Circle sizes are proportional to the number of similar haplotypes observed in the data set. Branch lengths are proportional to the number of mutations between haplotypes. See Appendix S1 for the haplotype designations.

Figure 7 in Molecular and morphometric variation in two sibling species of the genus Praomys (Rodentia: Muridae): implications for biogeography

Figure 7. Minimum spanning network of Praomys misonnei (A) and Praomys tullbergi (B) 16S haplotypes. Circle sizes are proportional to the number of similar haplotypes observed in the data set. Branch lengths are proportional to the number of mutations between haplotypes. See Appendix S1 for the haplotype designations.

Figure 1. Map showing the 40 in Molecular and morphometric variation in two sibling species of the genus Praomys (Rodentia: Muridae): implications for biogeography

Figure 1. Map showing the 40 sites yielding the specimens of Praomys tullbergi and Praomys misonnei that were included in the molecular analyses. For the names of the localities, see Table 1. Forests are indicated in light grey (adapted from Mayaux et al., 2004).

Figure 8. Canonical variate axes 1 and 2 resulting from a in Molecular and morphometric variation in two sibling species of the genus Praomys (Rodentia: Muridae): implications for biogeography

Figure 8. Canonical variate axes 1 and 2 resulting from a canonical variate analysis of Praomys misonnei (males and females) and Praomys tullbergi (males and females). Group centroids (symbols) and extreme limits of each scatter plot of points are indicated. Only specimens previously identified by molecular analyses were included in this analysis.

Figure 5 in Molecular and morphometric variation in two sibling species of the genus Praomys (Rodentia: Muridae): implications for biogeography

Figure 5. Phylogeny of 16S haplotypes resulting from maximum-likelihood (ML) analysis (GTR + I + G model). Numbers at nodes represent ML bootstrap support (1000 replications), and Bayesian posterior probabilities.

Figure 4 in Molecular and morphometric variation in two sibling species of the genus Praomys (Rodentia: Muridae): implications for biogeography

Figure 4. Schematic representation of the distribution of Praomys tullbergi and Praomys misonnei, and of the four P. misonnei populations (clades I–IV) resulting from phylogenetic analyses. Potential extrinsic barriers to gene flow (rivers) are indicated.

opencc-zeroSep 2021View details →

dryad32/100

A single pleiotropic locus influences the rate of hybridisation between two sibling species of Lygaeus bugs

The evolution of reproductive isolation lies at the heart of understanding the process of speciation. Of particular interest is the relationship between pre- and post-zygotic reproductive isolation, and the genetic architecture of traits that contribute to one or both forms of reproductive isolation. The sibling species of seed bug Lygaeus equestris and L. simulans show a classic pattern of asymmetric pre-zygotic reproductive isolation, with female L. equestris hybridising with male L. simulans, but with no hybridisation in the reciprocal direction. We have recently described a mutant pale colour form of L. simulans, that inherits as a single Mendelian locus and is pleiotropic for a number of other life history and behavioural traits. Here we tested whether this locus also influences pre- and post-zygotic reproductive isolation. Two sets of experimental crosses revealed that behavioural isolation varied with mutant versus wild-type phenotype for male L. simulans, with the pale form less successful at mating with female L. equestris. In terms of trying to assess post-zygotic isolation, levels of hybrid offspring production were uniformly low across the experiments. However, we did obtain, for the first time, hybrid offspring from a pairing between a female L. simulans and a male L. equestris. In this instance, the female was of the pale mutant genotype. Together with evidence for heterozygote advantage in terms of nymph survival, we consider our results in terms of possible mechanisms of reproductive isolation between this species pair, the role of the pale mutation, and the possible genetic architectures underlying the mutation, from a single gene to a super-gene.

opennotspecifiedDec 2013View details →

FIGURE 14 in A review of Chiromantes obtusifrons (Dana, 1851) (Decapoda: Brachyura: Sesarmidae), with descriptions of four new sibling-species from Christmas Island (Indian Ocean), Guam and Taiwan

FIGURE 14. Chiromantes eurymerus sp. nov., NMNS-7028-002, holotype male (18.7×14.8 mm), Taiwan. A, left third maxilliped; B, left side of anterior thoracic sternum; C, male abdomen (somites 3–6, telson); D, ventral view of left G1; E, dorsal view of left G1; F, left G2; G, ventral view of distal part of left G1; H, dorsal view of distal part of left G1. All structures denuded. Scales: A–F = 1.0 mm; G, H = 0.5 mm.

opennotspecifiedDec 2013View details →

FIGURE 13. A–E in A review of Chiromantes obtusifrons (Dana, 1851) (Decapoda: Brachyura: Sesarmidae), with descriptions of four new sibling-species from Christmas Island (Indian Ocean), Guam and Taiwan

FIGURE 13. A–E, Chiromantes silus sp. nov., ZRC 2012.0787, holotype male (16.3×12.8 mm), Guam; F–J, C. leptomerus sp. nov., NMNS-7028-001, holotype male (16.8×12.7 mm), Taiwan. A, F, male abdomen (somites 3–6, telson); B, G, ventral view of left G1; C, H, dorsal view of left G1; D, I, ventral view of distal part of left G1; E, J, dorsal view of distal part of left G1. All structures denuded. Scales: A–C, F–H, = 1.0 mm; D, E, I, J = 0.5 mm.