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Jeyaraney Kathirithamby - One of the best experts on this subject based on the ideXlab platform.

  • Expression of the Pupal Determinant broad during Metamorphic and Neotenic Development of the
    2016
    Co-Authors: Strepsipteran Xenos Vesparum Rossi, Juan A Delgado, Francisco Collantes, Jordi Paps, Deniz F. Erezyilmaz, Yan Huang, Alex Hayward, Zoltan Acs, Jeyaraney Kathirithamby
    Abstract:

    Derived members of the endoparasitic order Strepsiptera have acquired an extreme form of sexual dimorphism whereby males undergo metamorphosis and exist as free-living adults while females remain larviform, reaching sexual maturity within their hosts. Expression of the transcription factor, broad (br) has been shown to be required for pupal development in insects in which both sexes progress through metamorphosis. A surge of br expression appears in the last larval instar, as the epidermis begins pupal development. Here we ask if br is also up-regulated in the last larval instar of male Xenos vesparum Rossi (Stylopidae), and whether such expression is lost in neotenic larviform females. We clone three isoforms of br from X. vesparum (Xv’br), and show that they share greatest similarity to the Z1, Z3 and Z4 isoforms of other insect species. By monitoring Xv’br expression throughout development, we detect elevated levels of total br expression and the Xv’Z1, Xv’Z3, and Xv’Z4 isoforms in the last larval instar of males, but not females. By focusing on Xv’br expression in individual samples, we show that the levels of Xv’BTB and Xv’Z3 in the last larval instar of males are bimodal, with some males expressing 3X greater levels of Xv’br than fourth instar femlaes. Taken together, these data suggest that Neoteny (and endoparasitism) in females of Strepsiptera Stylopidia could be linked to the suppression of pupal determination. Our work identifies a difference in metamorphic gene expression that is associated with Neoteny, and thus provides insights into th

  • expression of the pupal determinant broad during metamorphic and neotenic development of the strepsipteran xenos vesparum rossi
    PLOS ONE, 2014
    Co-Authors: Deniz F. Erezyilmaz, Juan A Delgado, Francisco Collantes, Jordi Paps, Alexander Hayward, Yan Huang, Jeyaraney Kathirithamby
    Abstract:

    Derived members of the endoparasitic order Strepsiptera have acquired an extreme form of sexual dimorphism whereby males undergo metamorphosis and exist as free-living adults while females remain larviform, reaching sexual maturity within their hosts. Expression of the transcription factor, broad (br) has been shown to be required for pupal development in insects in which both sexes progress through metamorphosis. A surge of br expression appears in the last larval instar, as the epidermis begins pupal development. Here we ask if br is also up-regulated in the last larval instar of male Xenos vesparum Rossi (Stylopidae), and whether such expression is lost in neotenic larviform females. We clone three isoforms of br from X. vesparum (Xv’br), and show that they share greatest similarity to the Z1, Z3 and Z4 isoforms of other insect species. By monitoring Xv’br expression throughout development, we detect elevated levels of total br expression and the Xv’Z1, Xv’Z3, and Xv’Z4 isoforms in the last larval instar of males, but not females. By focusing on Xv’br expression in individual samples, we show that the levels of Xv’BTB and Xv’Z3 in the last larval instar of males are bimodal, with some males expressing 3X greater levels of Xv’br than fourth instar femlaes. Taken together, these data suggest that Neoteny (and endoparasitism) in females of Strepsiptera Stylopidia could be linked to the suppression of pupal determination. Our work identifies a difference in metamorphic gene expression that is associated with Neoteny, and thus provides insights into the relationship between metamorphic and neotenic development.

  • expression of the pupal determinant broad during metamorphic and neotenic development of the strepsipteran xenos vesparum rossi
    PLOS ONE, 2014
    Co-Authors: Deniz F. Erezyilmaz, Juan A Delgado, Francisco Collantes, Jordi Paps, Alexander Hayward, Yan Huang, Jeyaraney Kathirithamby
    Abstract:

    Derived members of the endoparasitic order Strepsiptera have acquired an extreme form of sexual dimorphism whereby males undergo metamorphosis and exist as free-living adults while females remain larviform, reaching sexual maturity within their hosts. Expression of the transcription factor, broad (br) has been shown to be required for pupal development in insects in which both sexes progress through metamorphosis. A surge of br expression appears in the last larval instar, as the epidermis begins pupal development. Here we ask if br is also up-regulated in the last larval instar of male Xenos vesparum Rossi (Stylopidae), and whether such expression is lost in neotenic larviform females. We clone three isoforms of br from X. vesparum (Xv’br), and show that they share greatest similarity to the Z1, Z3 and Z4 isoforms of other insect species. By monitoring Xv’br expression throughout development, we detect elevated levels of total br expression and the Xv’Z1, Xv’Z3, and Xv’Z4 isoforms in the last larval instar of males, but not females. By focusing on Xv’br expression in individual samples, we show that the levels of Xv’BTB and Xv’Z3 in the last larval instar of males are bimodal, with some males expressing 3X greater levels of Xv’br than fourth instar femlaes. Taken together, these data suggest that Neoteny (and endoparasitism) in females of Strepsiptera Stylopidia could be linked to the suppression of pupal determination. Our work identifies a difference in metamorphic gene expression that is associated with Neoteny, and thus provides insights into the relationship between metamorphic and neotenic development.

Deniz F. Erezyilmaz - One of the best experts on this subject based on the ideXlab platform.

  • Expression of the pupal determinant broad during metamorphic and neotenic development of the strepsipteran Xenos vesparum Rossi
    'Public Library of Science (PLoS)', 2017
    Co-Authors: Deniz F. Erezyilmaz, Hayward A, Huang Y, Paps J, Acs Z, Ja Delgado, Collantes F, Kathirithamby J
    Abstract:

    This is the final version of the article. Available from the publisher via the DOI in this record.Derived members of the endoparasitic order Strepsiptera have acquired an extreme form of sexual dimorphism whereby males undergo metamorphosis and exist as free-living adults while females remain larviform, reaching sexual maturity within their hosts. Expression of the transcription factor, broad (br) has been shown to be required for pupal development in insects in which both sexes progress through metamorphosis. A surge of br expression appears in the last larval instar, as the epidermis begins pupal development. Here we ask if br is also up-regulated in the last larval instar of male Xenos vesparum Rossi (Stylopidae), and whether such expression is lost in neotenic larviform females. We clone three isoforms of br from X. vesparum (Xv'br), and show that they share greatest similarity to the Z1, Z3 and Z4 isoforms of other insect species. By monitoring Xv'br expression throughout development, we detect elevated levels of total br expression and the Xv'Z1, Xv'Z3, and Xv'Z4 isoforms in the last larval instar of males, but not females. By focusing on Xv'br expression in individual samples, we show that the levels of Xv'BTB and Xv'Z3 in the last larval instar of males are bimodal, with some males expressing 3X greater levels of Xv'br than fourth instar femlaes. Taken together, these data suggest that Neoteny (and endoparasitism) in females of Strepsiptera Stylopidia could be linked to the suppression of pupal determination. Our work identifies a difference in metamorphic gene expression that is associated with Neoteny, and thus provides insights into the relationship between metamorphic and neotenic development.Leverhulme Trust Research Grant to JK (no. No. F/08 502/G) (http://www.leverhulme.ac.uk), Stony Brook University startup funds to DE (http://www. stonybrook.edu). The funders had no role in the study design, data collection and analysis, decision to publish, or preparation of the manuscript

  • Expression of the Pupal Determinant broad during Metamorphic and Neotenic Development of the
    2016
    Co-Authors: Strepsipteran Xenos Vesparum Rossi, Juan A Delgado, Francisco Collantes, Jordi Paps, Deniz F. Erezyilmaz, Yan Huang, Alex Hayward, Zoltan Acs, Jeyaraney Kathirithamby
    Abstract:

    Derived members of the endoparasitic order Strepsiptera have acquired an extreme form of sexual dimorphism whereby males undergo metamorphosis and exist as free-living adults while females remain larviform, reaching sexual maturity within their hosts. Expression of the transcription factor, broad (br) has been shown to be required for pupal development in insects in which both sexes progress through metamorphosis. A surge of br expression appears in the last larval instar, as the epidermis begins pupal development. Here we ask if br is also up-regulated in the last larval instar of male Xenos vesparum Rossi (Stylopidae), and whether such expression is lost in neotenic larviform females. We clone three isoforms of br from X. vesparum (Xv’br), and show that they share greatest similarity to the Z1, Z3 and Z4 isoforms of other insect species. By monitoring Xv’br expression throughout development, we detect elevated levels of total br expression and the Xv’Z1, Xv’Z3, and Xv’Z4 isoforms in the last larval instar of males, but not females. By focusing on Xv’br expression in individual samples, we show that the levels of Xv’BTB and Xv’Z3 in the last larval instar of males are bimodal, with some males expressing 3X greater levels of Xv’br than fourth instar femlaes. Taken together, these data suggest that Neoteny (and endoparasitism) in females of Strepsiptera Stylopidia could be linked to the suppression of pupal determination. Our work identifies a difference in metamorphic gene expression that is associated with Neoteny, and thus provides insights into th

  • expression of the pupal determinant broad during metamorphic and neotenic development of the strepsipteran xenos vesparum rossi
    PLOS ONE, 2014
    Co-Authors: Deniz F. Erezyilmaz, Juan A Delgado, Francisco Collantes, Jordi Paps, Alexander Hayward, Yan Huang, Jeyaraney Kathirithamby
    Abstract:

    Derived members of the endoparasitic order Strepsiptera have acquired an extreme form of sexual dimorphism whereby males undergo metamorphosis and exist as free-living adults while females remain larviform, reaching sexual maturity within their hosts. Expression of the transcription factor, broad (br) has been shown to be required for pupal development in insects in which both sexes progress through metamorphosis. A surge of br expression appears in the last larval instar, as the epidermis begins pupal development. Here we ask if br is also up-regulated in the last larval instar of male Xenos vesparum Rossi (Stylopidae), and whether such expression is lost in neotenic larviform females. We clone three isoforms of br from X. vesparum (Xv’br), and show that they share greatest similarity to the Z1, Z3 and Z4 isoforms of other insect species. By monitoring Xv’br expression throughout development, we detect elevated levels of total br expression and the Xv’Z1, Xv’Z3, and Xv’Z4 isoforms in the last larval instar of males, but not females. By focusing on Xv’br expression in individual samples, we show that the levels of Xv’BTB and Xv’Z3 in the last larval instar of males are bimodal, with some males expressing 3X greater levels of Xv’br than fourth instar femlaes. Taken together, these data suggest that Neoteny (and endoparasitism) in females of Strepsiptera Stylopidia could be linked to the suppression of pupal determination. Our work identifies a difference in metamorphic gene expression that is associated with Neoteny, and thus provides insights into the relationship between metamorphic and neotenic development.

  • expression of the pupal determinant broad during metamorphic and neotenic development of the strepsipteran xenos vesparum rossi
    PLOS ONE, 2014
    Co-Authors: Deniz F. Erezyilmaz, Juan A Delgado, Francisco Collantes, Jordi Paps, Alexander Hayward, Yan Huang, Jeyaraney Kathirithamby
    Abstract:

    Derived members of the endoparasitic order Strepsiptera have acquired an extreme form of sexual dimorphism whereby males undergo metamorphosis and exist as free-living adults while females remain larviform, reaching sexual maturity within their hosts. Expression of the transcription factor, broad (br) has been shown to be required for pupal development in insects in which both sexes progress through metamorphosis. A surge of br expression appears in the last larval instar, as the epidermis begins pupal development. Here we ask if br is also up-regulated in the last larval instar of male Xenos vesparum Rossi (Stylopidae), and whether such expression is lost in neotenic larviform females. We clone three isoforms of br from X. vesparum (Xv’br), and show that they share greatest similarity to the Z1, Z3 and Z4 isoforms of other insect species. By monitoring Xv’br expression throughout development, we detect elevated levels of total br expression and the Xv’Z1, Xv’Z3, and Xv’Z4 isoforms in the last larval instar of males, but not females. By focusing on Xv’br expression in individual samples, we show that the levels of Xv’BTB and Xv’Z3 in the last larval instar of males are bimodal, with some males expressing 3X greater levels of Xv’br than fourth instar femlaes. Taken together, these data suggest that Neoteny (and endoparasitism) in females of Strepsiptera Stylopidia could be linked to the suppression of pupal determination. Our work identifies a difference in metamorphic gene expression that is associated with Neoteny, and thus provides insights into the relationship between metamorphic and neotenic development.

Rebecca J Huss - One of the best experts on this subject based on the ideXlab platform.

  • separation custody and estate planning issues relating to companion animals
    Social Science Research Network, 2007
    Co-Authors: Rebecca J Huss
    Abstract:

    This article first discusses the domestication of companion animals, including the impact of anthropomorphism and Neoteny on how animals are viewed in U.S. society. Second, it reviews the current legal status of animals. Third, it considers the voluntary and involuntary separation of companion animals from their human families. Fourth, it examines custody issues in the context of the placement of animals after the divorce of the human family members. Finally, it analyzes estate planning issues relating to companion animals.

  • separation custody and estate planning issues relating to companion animals
    University of Colorado Law Review, 2003
    Co-Authors: Rebecca J Huss
    Abstract:

    This article first discusses the domestication of companion animals, including the impact of anthropomorphism and Neoteny on how animals are viewed in U.S. society. Second, it reviews the current legal status of animals. Third, it considers the voluntary and involuntary separation of companion animals from their human families. Fourth, it examines custody issues in the context of the placement of animals after the divorce of the human family members. Finally, it analyzes estate planning issues …

Alfried P Vogler - One of the best experts on this subject based on the ideXlab platform.

  • molecular phylogenetics of elateriformia coleoptera evolution of bioluminescence and Neoteny
    Cladistics, 2007
    Co-Authors: Milada Bocakova, Ladislav Bocak, Toby Hunt, Marianna Teravainen, Alfried P Vogler
    Abstract:

    Phylogenetic relationships in the coleopteran Series Elateriformia (click beetles, jewel beetles, fireflies and allies) were investigated using > 3800 nucleotides of partial nuclear (small and large subunit rRNA genes) and mitochondrial (large subunit rRNA and cytochrome oxidase subunit I) gene sequences. The Elateriformia includes several soft-bodied lineages, some of which retain larviform features in the adult stage (Neoteny), and several major bioluminescent groups, including the families Lampyridae (fireflies), Phengodidae and Rhagophthalmidae whose relationships have been contentious. All recognized superfamilies (Elateroidea, Cantharoidea, Byrrhoidea, Buprestoidea, Dascilloidea, Scirtoidea) and 28 of the 37 families, represented in 112 individuals, were included in the analysis. Sequence alignment was based on static and dynamic homology assignments and partial removal of sequences of uncertain homology. Alignment variable regions caused a great deal of uncertainty but also contributed much of the phylogenetic signal that was insufficient to resolve deep relationships when these were removed. The main features of most analyses were the monophyly of Elateroidea + Cantharoidea (= Elateroidea sensu lato), with Omethidae + Telegeusidae frequently occupying the basal node in this group; the affinities of Dascilloidea, Buprestoidea and a (broadly paraphyletic) Byrrhoidea, with unclear relationships among them; and the monophyly of Scirtoidea (including Decliniidae) as a rather distant outgroup to all others. When mapped on the resulting trees, soft-bodied lineages were polyphyletic, contradicting the former Cantharoidea that had been united by this trait. Transitions to Neoteny were either simultaneous with, or subsequent to, the origin of soft-bodiedness in a minimum of seven lineages. The bioluminescent groups Lampyridae (including the enigmatic genus Drilaster) and the tightly allied Phengodidae + Rhagophthalmidae were never monophyletic. The former showed close relationship to the species-rich, soft-bodied families Lycidae and Cantharidae, while the latter grouped with poorly resolved lineages at the base of Elateridae (click beetles). Hence, although key features as soft-bodiedness, Neoteny and bioluminescence in Coleoptera are largely confined to the Elateriformia, they appear to result from multiple origins, showing the propensity of closely related lineages to acquire similar features independently. © The Willi Hennig Society 2007.

Juan A Delgado - One of the best experts on this subject based on the ideXlab platform.

  • Expression of the Pupal Determinant broad during Metamorphic and Neotenic Development of the
    2016
    Co-Authors: Strepsipteran Xenos Vesparum Rossi, Juan A Delgado, Francisco Collantes, Jordi Paps, Deniz F. Erezyilmaz, Yan Huang, Alex Hayward, Zoltan Acs, Jeyaraney Kathirithamby
    Abstract:

    Derived members of the endoparasitic order Strepsiptera have acquired an extreme form of sexual dimorphism whereby males undergo metamorphosis and exist as free-living adults while females remain larviform, reaching sexual maturity within their hosts. Expression of the transcription factor, broad (br) has been shown to be required for pupal development in insects in which both sexes progress through metamorphosis. A surge of br expression appears in the last larval instar, as the epidermis begins pupal development. Here we ask if br is also up-regulated in the last larval instar of male Xenos vesparum Rossi (Stylopidae), and whether such expression is lost in neotenic larviform females. We clone three isoforms of br from X. vesparum (Xv’br), and show that they share greatest similarity to the Z1, Z3 and Z4 isoforms of other insect species. By monitoring Xv’br expression throughout development, we detect elevated levels of total br expression and the Xv’Z1, Xv’Z3, and Xv’Z4 isoforms in the last larval instar of males, but not females. By focusing on Xv’br expression in individual samples, we show that the levels of Xv’BTB and Xv’Z3 in the last larval instar of males are bimodal, with some males expressing 3X greater levels of Xv’br than fourth instar femlaes. Taken together, these data suggest that Neoteny (and endoparasitism) in females of Strepsiptera Stylopidia could be linked to the suppression of pupal determination. Our work identifies a difference in metamorphic gene expression that is associated with Neoteny, and thus provides insights into th

  • expression of the pupal determinant broad during metamorphic and neotenic development of the strepsipteran xenos vesparum rossi
    PLOS ONE, 2014
    Co-Authors: Deniz F. Erezyilmaz, Juan A Delgado, Francisco Collantes, Jordi Paps, Alexander Hayward, Yan Huang, Jeyaraney Kathirithamby
    Abstract:

    Derived members of the endoparasitic order Strepsiptera have acquired an extreme form of sexual dimorphism whereby males undergo metamorphosis and exist as free-living adults while females remain larviform, reaching sexual maturity within their hosts. Expression of the transcription factor, broad (br) has been shown to be required for pupal development in insects in which both sexes progress through metamorphosis. A surge of br expression appears in the last larval instar, as the epidermis begins pupal development. Here we ask if br is also up-regulated in the last larval instar of male Xenos vesparum Rossi (Stylopidae), and whether such expression is lost in neotenic larviform females. We clone three isoforms of br from X. vesparum (Xv’br), and show that they share greatest similarity to the Z1, Z3 and Z4 isoforms of other insect species. By monitoring Xv’br expression throughout development, we detect elevated levels of total br expression and the Xv’Z1, Xv’Z3, and Xv’Z4 isoforms in the last larval instar of males, but not females. By focusing on Xv’br expression in individual samples, we show that the levels of Xv’BTB and Xv’Z3 in the last larval instar of males are bimodal, with some males expressing 3X greater levels of Xv’br than fourth instar femlaes. Taken together, these data suggest that Neoteny (and endoparasitism) in females of Strepsiptera Stylopidia could be linked to the suppression of pupal determination. Our work identifies a difference in metamorphic gene expression that is associated with Neoteny, and thus provides insights into the relationship between metamorphic and neotenic development.

  • expression of the pupal determinant broad during metamorphic and neotenic development of the strepsipteran xenos vesparum rossi
    PLOS ONE, 2014
    Co-Authors: Deniz F. Erezyilmaz, Juan A Delgado, Francisco Collantes, Jordi Paps, Alexander Hayward, Yan Huang, Jeyaraney Kathirithamby
    Abstract:

    Derived members of the endoparasitic order Strepsiptera have acquired an extreme form of sexual dimorphism whereby males undergo metamorphosis and exist as free-living adults while females remain larviform, reaching sexual maturity within their hosts. Expression of the transcription factor, broad (br) has been shown to be required for pupal development in insects in which both sexes progress through metamorphosis. A surge of br expression appears in the last larval instar, as the epidermis begins pupal development. Here we ask if br is also up-regulated in the last larval instar of male Xenos vesparum Rossi (Stylopidae), and whether such expression is lost in neotenic larviform females. We clone three isoforms of br from X. vesparum (Xv’br), and show that they share greatest similarity to the Z1, Z3 and Z4 isoforms of other insect species. By monitoring Xv’br expression throughout development, we detect elevated levels of total br expression and the Xv’Z1, Xv’Z3, and Xv’Z4 isoforms in the last larval instar of males, but not females. By focusing on Xv’br expression in individual samples, we show that the levels of Xv’BTB and Xv’Z3 in the last larval instar of males are bimodal, with some males expressing 3X greater levels of Xv’br than fourth instar femlaes. Taken together, these data suggest that Neoteny (and endoparasitism) in females of Strepsiptera Stylopidia could be linked to the suppression of pupal determination. Our work identifies a difference in metamorphic gene expression that is associated with Neoteny, and thus provides insights into the relationship between metamorphic and neotenic development.