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Re-collection and identity of Ooencyrtus californicus (Hymenoptera: Encyrtidae) and its new synonym, Ooencyrtus lucidus
No full textTriapitsyn, Serguei V., Rugman-Jones, Paul F., Perring, Thomas M. (2021): Re-collection and identity of Ooencyrtus californicus (Hymenoptera: Encyrtidae) and its new synonym, Ooencyrtus lucidus. Zootaxa 4966 (1): 97-100, DOI: https://doi.org/10.11646/zootaxa.4966.1.1
FIGURES 1–3 in Re-collection and identity of Ooencyrtus californicus (Hymenoptera: Encyrtidae) and its new synonym, Ooencyrtus lucidus
No full textFIGURES 1–3. Ooencyrtus californicus, females (from Pinus sabiniana at roadside of Hwy. 49/120 near Don Pedro Reservoir, 37°50′42′′N 120°22′58′′W, Tuolumne County, California, USA): 1, habitus in lateral view; 2, 3, antennae.Published as part of Triapitsyn, Serguei V., Rugman-Jones, Paul F. & Perring, Thomas M., 2021, Re-collection and identity of Ooencyrtus californicus (Hymenoptera: Encyrtidae) and its new synonym, Ooencyrtus lucidus, pp. 97-100 in Zootaxa 4966 (1) on page 99, DOI: 10.11646/zootaxa.4966.1.11, http://zenodo.org/record/472936
FIGURES 4–6 in On the origin of Anagyrus callidus (Hymenoptera: Encyrtidae), a parasitoid of pink hibiscus mealybug Maconellicoccus hirsutus (Hemiptera: Pseudococcidae)
No full textFIGURES 4–6. Anagyrus spp.: 4–5, A. callidus, habitus of female and male in dorsolateral view, respectively (Pingtung County, Taiwan); 6, A. kamali, habitus of male paratype in dorsal view (image courtesy of M.W. Gates).Published as part of Triapitsyn, Serguei V., Andreason, Sharon A., Dominguez, Chrysalyn & Perring, Thomas M., 2019, On the origin of Anagyrus callidus (Hymenoptera: Encyrtidae), a parasitoid of pink hibiscus mealybug Maconellicoccus hirsutus (Hemiptera: Pseudococcidae), pp. 283-289 in Zootaxa 4671 (2) on page 288, DOI: 10.11646/zootaxa.4671.2.9, http://zenodo.org/record/344243
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Evaluation of the Parasitoid Ooencyrtus mirus (Hymenoptera: Encyrtidae) as a Potential Biological Control Agent of Bagrada hilaris (Heteroptera: Pentatomidae)
Get PDFIn an effort to find a biological control agent of Bagrada hilaris, an invasive pentatomid pest on brassica crops in western North America, three hymenopteran egg parasitoids were recovered from brassica plant debris in Pakistan and sent to California, USA for evaluation. One of these, a uniparental species, has since been described as Ooencyrtus mirus. To evaluate O. mirus as a potential biological control agent, I investigated its host range and reproductive capacity. I also tested parameters for maximizing its reproduction, including temperature and the age of the parasitoid and host eggs. Finally, I examined O. mirus’ ability to find host eggs on broccoli plants in soil, where B. hilaris lays them. The results show O. mirus to be a generalist parasitoid species with a preference for B. hilaris. Under lab conditions O. mirus lays an average of 118 eggs and lives an average of 58 days. The immatures undergo quiescence at 14° or 16°C. They can be stored at these temperatures for at least 3 months with no loss of reproductive success. The immatures develop fastest at 36°C, but the best temperature for rearing is 30°C. Above 30°C, the second generation has an increase in the proportion of males, due to the high temperature killing the symbiotic Wolbachia bacteria that enable unfertilized eggs to develop as females. Wasps of age 3-11 days have better reproductive success than wasps aged 0-2 days. They are most successful on 0- and 1-day-old B. hilaris eggs, and they can reproduce on frozen eggs. The ability of O. mirus to find host eggs in soil was poor, and even worse on plants. These studies describe the biological characteristics of O. mirus that suggest it could be an effective biological control agent. However, more testing is needed on its host preferences under natural conditions to determine if it would be safe to release in the field; i.e., not a threat to native or beneficial host species
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Biological Studies on Galendromus flumenis (Acari: Phytoseiidae), a Predator of Banks Grass Mite
Get PDFThe predatory mite, Galendromus flumenis (Chant) (Acari: Phytoseiidae), is the most abundant predator and the only phytoseiid species on date bunches infested with Banks grass mite, Oligonychus pratensis (Banks) (Acari: Tetranychidae). Biological studies were conducted on this predatory mite in order to develop and optimize biological control strategies against the Banks grass mite.In the first chapter, studies showed that G. flumenis feeds on all immature stages of Banks grass mite, but it prefers eggs over the other stages. Functional response studies indicated that the predator displays a type II response on all immature stages of the prey. The mutual interference study in Chapter 2 revealed that total predation increased with increasing G. flumenis density in two arena sizes. However, there was not a proportional increase in per capita predation due to mutual interference. The interference effect was high in small arenas due to higher encounter rates between predators. Also, higher predator density and smaller arena size caused significantly higher dispersal rate of predators. In Chapter 3 data show that G. flumenis develops under a wide range of temperatures from 18°C to 42°C, but survival rates were highest between 26°C and 38°C. The optimal temperature for development (Topt) was calculated to be 37.6°C. Further work on the population growth and reproduction of G. flumenis (Chapter 4) showed that predators cannot oviposit at 38°C (Topt). At 34°C, the next temperature with the shortest developmental time for the predator, G. flumenis showed medium reproductive capacity (1.6 eggs/ day and 19.9 eggs/ ovipositional period), which is inferior to its prey. The net reproductive rate of prey can reach three times the maximum potential of G. flumenis, contributing to an intrinsic rate of natural increase of the prey that is more than double that of the predator.In the final chapter, treatment with the miticide hexythiazox had little or no effect on immature development and reproduction of emerging adult predators. Hexythiazox did not have any adverse effect on the fecundity of treated females, hatch rate of eggs, progeny development, or sex ratio
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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