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8 results for “Diadumene lineata”
Microsatellite genotypes and associated data for: The contribution of clonality to population genetic structure in the sea anemone Diadumene lineata
<p>Ecological and evolutionary processes differ depending on how genetic diversity is organized in space. For clonal organisms, the organization of both genetic and genotypic diversity can influence the fitness effects of competition, the mating system, and reproductive mode, which are key drivers of life cycle evolution. Understanding how individual reproductive behavior contributes to population genetic structure is essential for disentangling these forces, particularly in species with complex and plastic life cycles. The widespread sea anemone <i>Diadumene lineata</i> exhibits temperature-dependent fission which contributes to predictable variation in clonal rate along the Atlantic coast of the United States, part of its non-native range. Because warmer conditions lead to higher rates of clonality, we expected to find lower genotypic and genetic diversity in lower versus higher latitude populations. We developed primers for 11 microsatellite loci and genotyped 207 anemones collected from 8 sites ranging from Florida to Massachusetts. We found clonal influence at all sites, and as predicted, the largest clones were found at lower latitude sites. We also found genetic signatures of sex in the parts of the range where gametogenesis is most common. Evidence of sex outside the native range is novel for this species and provides insights into the dynamics of this successful invader. Our findings also illustrate challenges that partially clonal taxa pose for eco-evolutionary studies, such as difficulty sampling statistically robust numbers of genets and interpretating common population genetic metrics. For example, we found high among-locus variation in F<i><sub>is, </sub></i>which makes the meaning of mean multilocus F<i><sub>is</sub></i> unclear.</p>
Microsatellite genotypes and associated data for: The contribution of clonality to population genetic structure in the sea anemone Diadumene lineata
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Figure 5 from: Hancock ZB, Goeke JA, Wicksten MK (2017) A sea anemone of many names: a review of the taxonomy and distribution of the invasive actiniarian Diadumene lineata (Diadumenidae), with records of its reappearance on the Texas coast. ZooKeys 706: 1-15. https://doi.org/10.3897/zookeys.706.19848
Figure 5 - A map showing name usage by location for the synonyms of D. lineata, not including misspelled names. Inset shows Britain and the northern coast of Europe where there is a very high density of references (adapted from Fautin 2015).
Figure 4 from: Hancock ZB, Goeke JA, Wicksten MK (2017) A sea anemone of many names: a review of the taxonomy and distribution of the invasive actiniarian Diadumene lineata (Diadumenidae), with records of its reappearance on the Texas coast. ZooKeys 706: 1-15. https://doi.org/10.3897/zookeys.706.19848
Figure 4 - Synonymy flowchart, including misidentifications (i.e., Chrysoela chrysosplenium and Actinothoe pustulata). Synonyms based on misspellings have been omitted.
Figure 3 from: Hancock ZB, Goeke JA, Wicksten MK (2017) A sea anemone of many names: a review of the taxonomy and distribution of the invasive actiniarian Diadumene lineata (Diadumenidae), with records of its reappearance on the Texas coast. ZooKeys 706: 1-15. https://doi.org/10.3897/zookeys.706.19848
Figure 3 - A view of the Sportsman Road site. The circled area indicates where anemones were sampled from in this study; anemones have also previously been located on the jetty in the background (Wicksten, pers. obs.).
Figure 6 from: Hancock ZB, Goeke JA, Wicksten MK (2017) A sea anemone of many names: a review of the taxonomy and distribution of the invasive actiniarian Diadumene lineata (Diadumenidae), with records of its reappearance on the Texas coast. ZooKeys 706: 1-15. https://doi.org/10.3897/zookeys.706.19848
Figure 6 - Histogram showing the shift in name usage over time. In the time period 2000-2011, Diadumene lineata showed the greatest increase in usage. Data compiled from Fautin (2015).
Figure 1 from: Hancock ZB, Goeke JA, Wicksten MK (2017) A sea anemone of many names: a review of the taxonomy and distribution of the invasive actiniarian Diadumene lineata (Diadumenidae), with records of its reappearance on the Texas coast. ZooKeys 706: 1-15. https://doi.org/10.3897/zookeys.706.19848
Figure 1 - Diadumene lineata at Sportsman Road on Galveston Island with tentacles fully retracted (a), and with tentacles extended (b).
Figure 2 from: Hancock ZB, Goeke JA, Wicksten MK (2017) A sea anemone of many names: a review of the taxonomy and distribution of the invasive actiniarian Diadumene lineata (Diadumenidae), with records of its reappearance on the Texas coast. ZooKeys 706: 1-15. https://doi.org/10.3897/zookeys.706.19848
Figure 2 - Map showing the Texas Coast with Port Aransas and Galveston marked. Inset shows the three locations around Galveston Bay where D. lineata populations were found: East Beach (29°19.9'N; 94°43.5'W), Bolivar jetty (29°22.2'N; 94°45.0'W), and Sportsman Road (29°15.2'N; 94°55.1'W).
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