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34 results for “Cerapachys”
Data from: Non-nest mate discrimination and clonal colony structure in the parthenogenetic ant Cerapachys biroi
Understanding the interplay between cooperation and conflict in social groups is a major goal of biology. One important factor is genetic relatedness, and animal societies are usually composed of related but genetically different individuals, setting the stage for conflicts over reproductive allocation. Recently, however, it has been found that several ant species reproduce predominantly asexually. Although this can potentially give rise to clonal societies, in the few well-studied cases, colonies are often chimeric assemblies of different genotypes, due to worker drifting or colony fusion. In the ant Cerapachys biroi, queens are absent and all individuals reproduce via thelytokous parthenogenesis, making this species an ideal study system of asexual reproduction and its consequences for social dynamics. Here, we show that colonies in our study population on Okinawa, Japan, recognize and effectively discriminate against foreign workers, especially those from unrelated asexual lineages. In accord with this finding, colonies never contained more than a single asexual lineage and average pairwise genetic relatedness within colonies was extremely high (r = 0.99). This implies that the scope for social conflict in C. biroi is limited, with unusually high potential for cooperation and altruism.
FIGURES 11–14 in New ant species related to Cerapachys sexspinus and discussion of the status of Yunodorylus (Hymenoptera: Formicidae)
FIGURES 11–14. Heads in frontal view, workers; 11: Cerapachys sexspinus (Xu, 2000), paratype; 12: Cerapachys eguchii n. sp., paratype; 13: Cerapachys doryloides n. sp., holotype; 14: Cerapachys paradoxus n. sp., holotype.
FIGURE 15 in New ant species related to Cerapachys sexspinus and discussion of the status of Yunodorylus (Hymenoptera: Formicidae)
FIGURE 15. Species distribution map. Record of Cerapachys sexspinus (Xu, 2000) from Thailand by Jaitrong & Nabhitabhata (2005) is omitted.
Fig. 34. Pygidium, posterolateral view. A. Ectatomma opaciventre. B. Cerapachys nitidulus. C. Labidus coecus. D. Technomyrmex albipes. E–F in A phylogenetic analyis of ant morphology (Hymenoptera: Formicidae) with special reference to the poneromoprh subfamilies
Fig. 34. Pygidium, posterolateral view. A. Ectatomma opaciventre. B. Cerapachys nitidulus. C. Labidus coecus. D. Technomyrmex albipes. E–F. Tapinoma erraticum (note pilosity directed anterad on angled posttergite); F. pygidium in situ. See text for explanation. Abbreviations: Prt, pretergite of pygidium; Pt, posttergite; Sp, spiracle; VS, sternum of fifth abdominal segment; VIS, sternum of sixth abdominal segment; VIIS, hypopygium; VT, tergum of fifth abdominal segment; VIT, tergum of sixth abdominal segment; VIIT, pygidium.
Data from: Non-nest mate discrimination and clonal colony structure in the parthenogenetic ant Cerapachys biroi
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FIGURE 8. Cerapachys paradoxus n in New ant species related to Cerapachys sexspinus and discussion of the status of Yunodorylus (Hymenoptera: Formicidae)
FIGURE 8. Cerapachys paradoxus n. sp., paratype, small worker; side view.
FIGURE 5. Cerapachys eguchii n in New ant species related to Cerapachys sexspinus and discussion of the status of Yunodorylus (Hymenoptera: Formicidae)
FIGURE 5. Cerapachys eguchii n. sp., paratype, small worker; side view.
FIGURES 1–2. Cerapachys doryloides n in New ant species related to Cerapachys sexspinus and discussion of the status of Yunodorylus (Hymenoptera: Formicidae)
FIGURES 1–2. Cerapachys doryloides n. sp., holotype worker; 1: dorsal view; 2: side view.
FIGURES 3–4. Cerapachys eguchii n in New ant species related to Cerapachys sexspinus and discussion of the status of Yunodorylus (Hymenoptera: Formicidae)
FIGURES 3–4. Cerapachys eguchii n. sp., paratype, large worker; 3: dorsal view; 4: side view.
FIGURES 6–7. Cerapachys paradoxus n in New ant species related to Cerapachys sexspinus and discussion of the status of Yunodorylus (Hymenoptera: Formicidae)
FIGURES 6–7. Cerapachys paradoxus n. sp., holotype, large worker; 6: dorsal view; 7: side view.
FIGURES 9–10 in New ant species related to Cerapachys sexspinus and discussion of the status of Yunodorylus (Hymenoptera: Formicidae)
FIGURES 9–10. Cerapachys sexspinus (Xu, 2000), paratype worker; 9: dorsal view; 10: side view.
Figure 6 from: Bharti H, Akbar S (2013) Taxonomic studies on the ant genus Cerapachys Smith (Hymenoptera, Formicidae) from India. ZooKeys 336: 79-103. https://doi.org/10.3897/zookeys.336.5719
Figure 6 - A cephalic dorsum of Cerapachys schoedli illustrating small punctures with diameter less than the average distance separating themB cephalic dorsum of Cerapachys wighti showing large punctures with diameter greater than space separating them.
Figure 1 from: Bharti H, Akbar S (2013) Taxonomic studies on the ant genus Cerapachys Smith (Hymenoptera, Formicidae) from India. ZooKeys 336: 79-103. https://doi.org/10.3897/zookeys.336.5719
Figure 1 - Images illustrating the measurements used. A body in lateral view with measuring lines for EL, MH, and WL B body in dorsal view with measuring lines for PrW, PL1, PW1, IIIAW, IIIAL, IVAW and IVAL C head in full-face view with measuring lines for HL, HW and SL.
Figure 41 from: Bharti H, Akbar S (2013) Taxonomic studies on the ant genus Cerapachys Smith (Hymenoptera, Formicidae) from India. ZooKeys 336: 79-103. https://doi.org/10.3897/zookeys.336.5719
Figure 41 - Graph plotted on evaluating morphometric data shows less affinity of ergatoid queens with workers compared with gyne/queen.
Figures 17-19 from: Bharti H, Akbar S (2013) Taxonomic studies on the ant genus Cerapachys Smith (Hymenoptera, Formicidae) from India. ZooKeys 336: 79-103. https://doi.org/10.3897/zookeys.336.5719
Figures 17-19 - Cerapachys nayana sp. n. 17 body in profile 18 body in dorsal view 19 head in full-face view.
Figures 20-22 from: Bharti H, Akbar S (2013) Taxonomic studies on the ant genus Cerapachys Smith (Hymenoptera, Formicidae) from India. ZooKeys 336: 79-103. https://doi.org/10.3897/zookeys.336.5719
Figures 20-22 - Cerapachys nayana sp. n. ergatoid queen. 20 body in profile 21 body in dorsal view 22 head in full-face view.
Figure 9 from: Bharti H, Akbar S (2013) Taxonomic studies on the ant genus Cerapachys Smith (Hymenoptera, Formicidae) from India. ZooKeys 336: 79-103. https://doi.org/10.3897/zookeys.336.5719
Figure 9 - A head of Cerapachys wighti in lateral view illustrating smaller eyes B head of Cerapachys aitkenii in lateral view illustrating larger eyes.
Figures 32-34 from: Bharti H, Akbar S (2013) Taxonomic studies on the ant genus Cerapachys Smith (Hymenoptera, Formicidae) from India. ZooKeys 336: 79-103. https://doi.org/10.3897/zookeys.336.5719
Figures 32-34 - Cerapachys seema sp. n. ergatoid queen. 32 body in profile 33 body in dorsal view 34 head in full-face view.
Figures 10 from: Bharti H, Akbar S (2013) Taxonomic studies on the ant genus Cerapachys Smith (Hymenoptera, Formicidae) from India. ZooKeys 336: 79-103. https://doi.org/10.3897/zookeys.336.5719
Figures 10 - A body profile of Cerapachys aitkenii in lateral view illustrating the characteristic bicolouration and prominent foveate sculpture B body profile of Cerapachys indicus in lateral view illustrating unicolorous body colouration and with reduced punctuate sculpture.
Figure 5 from: Bharti H, Akbar S (2013) Taxonomic studies on the ant genus Cerapachys Smith (Hymenoptera, Formicidae) from India. ZooKeys 336: 79-103. https://doi.org/10.3897/zookeys.336.5719
Figure 5 - A petiolar node of Cerapachys sulcinodis with smooth median area B petiolar node of Cerapachys wighti without any median smooth area.
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