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  1. Article ; Online: NATURAL HISTORY OF THE BLACK IGUANA Ctenosaura similis (SQUAMATA

    Aaron García Rosales / Alicia Arriaga Noguez / Aurelio Ramírez-Bautista

    Acta Biológica Colombiana, Vol 25, Iss

    IGUANIDAE) IN ISLA CONTOY, QUINTANA ROO, MEXICO

    2020  Volume 3

    Abstract: The genera Iguanaand Ctenosaurabelong to the Iguanidae family, and populations of most species of these genera have decreased due to anthropogenic effects. The natural history of most species of this family is poorly known, including Ctenosaura similis. ... ...

    Abstract The genera Iguanaand Ctenosaurabelong to the Iguanidae family, and populations of most species of these genera have decreased due to anthropogenic effects. The natural history of most species of this family is poorly known, including Ctenosaura similis. Therefore, this study documents some ecological aspects of the species, such as its feeding habits, and habitat and microhabitat use in a population on Isla Contoy in Quintana Roo, Mexico. The data showed that even though C. similisis distributed throughout the island, individuals more commonly use human construction (buildings) of Parque Nacional Isla Contoy (PNIC) and mangrove areas. Microhabitats most used by all age classes and sexes were rocks and trees. The diet of the species is omnivorous; however, the frequency of prey type consumed changes with the age of the individuals (hatchlings, juveniles, and adults), as well as with the season of the year. The practice of cannibalism by some individuals is also reported, as well as coprophagy and scavenging. This work provides general information on the life history of C. similis, complementing the scarce information that is currently available.
    Keywords Animal ecology ; animal population ; feeding ; opportunistic species ; Reptilia ; Biology (General) ; QH301-705.5
    Subject code 590
    Language English
    Publishing date 2020-04-01T00:00:00Z
    Publisher Universidad Nacional de Colombia
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Comparative morphology and trophic ecology in a population of the polymorphic lizard Sceloporus minor (Squamata

    Aaron García-Rosales / Aurelio Ramírez-Bautista / Barry P. Stephenson

    PeerJ, Vol 7, p e

    Phrynosomatidae) from central Mexico

    2019  Volume 8099

    Abstract: Polymorphism among individuals of the same population has generally been linked to alternative reproductive tactics, where different morphs can exhibit differences in their morphological, ecological, and behavioral attributes. These differences may ... ...

    Abstract Polymorphism among individuals of the same population has generally been linked to alternative reproductive tactics, where different morphs can exhibit differences in their morphological, ecological, and behavioral attributes. These differences may result in a divergence in diet between morphs due to differential exploitation of habitat, morphological differences that influence prey selection, or differential energy expenditure that results in different nutritional needs. The present study analyzes the morphology (morphometry and body mass) and diet of red and yellow male morphs in a population (El Enzuelado) of the lizard Sceloporus minor from central Mexico. No differences between morphs were found for any of the morphometric variables analyzed (snout-vent length, tail length, jaw length, jaw width, head length, head width, head height, tibia length, femur length, forearm length and ventral patch length). In both morphs, allometric growth was observed in all body features analyzed, as well as in morphometric features of the head across seasons. Analysis of stomach contents showed that the diet of red males was composed of 12 categories of prey, while that of yellow males was composed of 10 categories; those categories of diet not shared between morphs (e.g., Isoptera, Psocoptera) were consumed by their respective morph in very low proportions. Categories of diet with the highest values of food importance for both groups were Coleoptera, Orthoptera, and leaves; a similar pattern was seen across seasons. This, in turn, is reflected in low niche breadth values for each morph and a very high niche overlap. There were no significant differences between morphs overall, or between morphs per season, in the weight and volume of stomach contents or in the number of prey items found in stomachs; however, differences in these variables across all males (independent of morph) were recorded between seasons. Likewise, no significant correlations were found between body size (snout-vent length) and the volume of stomach ...
    Keywords Polymorphism ; Diet ; Population ; Lizards ; Morphometry ; Medicine ; R ; Biology (General) ; QH301-705.5
    Subject code 590
    Language English
    Publishing date 2019-11-01T00:00:00Z
    Publisher PeerJ Inc.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Morphological evidence of sexual dimorphism in a Continental anole species of southeastern of Mexico

    Luis Manuel Badillo Saldaña / AARÓN GARCÍA-ROSALES / J. DANIEL LARA-TUFIÑO / AURELIO RAMÍREZ-BAUTISTA

    Biodiversitas, Vol 20, Iss

    2019  Volume 11

    Abstract: Abstract. Badillo-Saldaña LM, García-Rosales A, Lara-Tufiño JD, Ramírez-Bautista A. 2019. Morphological evidence of sexual dimorphism in a Continental anole species of southeastern Mexico. Biodiversitas 20: 3347-3351. Intersexual differences (sexual ... ...

    Abstract Abstract. Badillo-Saldaña LM, García-Rosales A, Lara-Tufiño JD, Ramírez-Bautista A. 2019. Morphological evidence of sexual dimorphism in a Continental anole species of southeastern Mexico. Biodiversitas 20: 3347-3351. Intersexual differences (sexual dimorphism; SD) have been observed in many traits of vertebrate and invertebrate species. These differences evolved as a response to ecological factors, such as the display of morphological and behavioral attributes during reproduction, territorial defense, or differential use of resources. However, some species of lizards do not show high SD, as is the case of some slender small body-sized anoles of the Caribbean Islands. Despite extensive knowledge about SD in island anoles, SD has not been evaluated for most mainland species. Therefore, the goal of this study was to evaluate the SD of a small body-sized species (Anolis unilobatus) throughout its distribution in Mexico, making use of eight morphological characteristics and multivariate analyses. The results showed that snout-vent (SVL) and forearm (FAL) lengths of males are larger than those of females. This could be explained by males being more territorial, so larger size will make them more successful in defending their territory from other males. Therefore, the difference in SVL and FAL between males and females of this species could be related to defense of their territory. The differences observed in morphological structures between males and females could thus support the hypothesis of sexual selection.
    Keywords anolis unilobatus ; intersexual differences ; small-sized species ; tropical environment ; Biology (General) ; QH301-705.5
    Subject code 590
    Language English
    Publishing date 2019-10-01T00:00:00Z
    Publisher MBI & UNS Solo
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Role of epigenetics in unicellular to multicellular transition in Dictyostelium

    Simon Yuan Wang / Elizabeth Ann Pollina / I-Hao Wang / Lindsay Kristina Pino / Henry L. Bushnell / Ken Takashima / Colette Fritsche / George Sabin / Benjamin Aaron Garcia / Paul Lieberman Greer / Eric Lieberman Greer

    Genome Biology, Vol 22, Iss 1, Pp 1-

    2021  Volume 30

    Abstract: Abstract Background The evolution of multicellularity is a critical event that remains incompletely understood. We use the social amoeba, Dictyostelium discoideum, one of the rare organisms that readily transits back and forth between both unicellular ... ...

    Abstract Abstract Background The evolution of multicellularity is a critical event that remains incompletely understood. We use the social amoeba, Dictyostelium discoideum, one of the rare organisms that readily transits back and forth between both unicellular and multicellular stages, to examine the role of epigenetics in regulating multicellularity. Results While transitioning to multicellular states, patterns of H3K4 methylation and H3K27 acetylation significantly change. By combining transcriptomics, epigenomics, chromatin accessibility, and orthologous gene analyses with other unicellular and multicellular organisms, we identify 52 conserved genes, which are specifically accessible and expressed during multicellular states. We validated that four of these genes, including the H3K27 deacetylase hdaD, are necessary and that an SMC-like gene, smcl1, is sufficient for multicellularity in Dictyostelium. Conclusions These results highlight the importance of epigenetics in reorganizing chromatin architecture to facilitate multicellularity in Dictyostelium discoideum and raise exciting possibilities about the role of epigenetics in the evolution of multicellularity more broadly.
    Keywords Epigenetics ; Multicellularity ; Dictyostelium discoideum ; Methylation ; Acetylation ; hdaD ; Biology (General) ; QH301-705.5 ; Genetics ; QH426-470
    Language English
    Publishing date 2021-05-01T00:00:00Z
    Publisher BMC
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article: Morphological evidence of sexual dimorphism in a Continental anole species of southeastern of Mexico

    Luis Manuel Badillo Saldaña / AARÓN GARCÍA-ROSALES / J. DANIEL LARA-TUFIÑO / AURELIO RAMÍREZ-BAUTISTA

    Biodiversitas. 2019 Oct., v. 20, no. 11

    2019  

    Abstract: Badillo-Saldaña LM, García-Rosales A, Lara-Tufiño JD, Ramírez-Bautista A. 2019. Morphological evidence of sexual dimorphism in a Continental anole species of southeastern Mexico. Biodiversitas 20: 3347-3351. Intersexual differences (sexual dimorphism; SD) ...

    Abstract Badillo-Saldaña LM, García-Rosales A, Lara-Tufiño JD, Ramírez-Bautista A. 2019. Morphological evidence of sexual dimorphism in a Continental anole species of southeastern Mexico. Biodiversitas 20: 3347-3351. Intersexual differences (sexual dimorphism; SD) have been observed in many traits of vertebrate and invertebrate species. These differences evolved as a response to ecological factors, such as the display of morphological and behavioral attributes during reproduction, territorial defense, or differential use of resources. However, some species of lizards do not show high SD, as is the case of some slender small body-sized anoles of the Caribbean Islands. Despite extensive knowledge about SD in island anoles, SD has not been evaluated for most mainland species. Therefore, the goal of this study was to evaluate the SD of a small body-sized species (Anolis unilobatus) throughout its distribution in Mexico, making use of eight morphological characteristics and multivariate analyses. The results showed that snout-vent (SVL) and forearm (FAL) lengths of males are larger than those of females. This could be explained by males being more territorial, so larger size will make them more successful in defending their territory from other males. Therefore, the difference in SVL and FAL between males and females of this species could be related to defense of their territory. The differences observed in morphological structures between males and females could thus support the hypothesis of sexual selection.
    Keywords Anolis ; arms (limbs) ; invertebrates ; reproduction ; sexual dimorphism ; sexual selection ; territoriality ; Caribbean ; Mexico
    Language English
    Dates of publication 2019-10
    Publishing place MBI & UNS Solo
    Document type Article
    ZDB-ID 2660049-3
    ISSN 2085-4722
    ISSN 2085-4722
    DOI 10.13057/biodiv/d201130
    Database NAL-Catalogue (AGRICOLA)

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  6. Article ; Online: Identification of parasites in dogs housed in temporary homes in Chihuahua, Chihuahua, Mexico

    Guillermo Aarón García-Hinojosa / Sandra Alejandra Ávila-Huerta / Guadalupe Virginia Nevárez-Moorillón / Jesús Francisco Rodríguez-Zapién / Martín Renato Hernández-Castaños / Jaime Raúl Adame-Gallegos

    Salud Pública de México, Vol 60, Iss 1, ene-feb, Pp 107-

    2017  Volume 108

    Abstract: Not available] ...

    Abstract [Not available]
    Keywords Public aspects of medicine ; RA1-1270
    Language English
    Publishing date 2017-12-01T00:00:00Z
    Publisher Instituto Nacional de Salud Pública
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Fifth Annual Summer Research Summit on Health Equity Organized by the Center of Excellence in Health Equity, Training and Research, Baylor College of Medicine, Houston, Texas 77030, USA on May 17, 2022

    Aaditya Arun / Abhijit Rao / Abigail Hecht / Aaron Garcia / Abiodun Oluyomi / Aaron Lapidus / Achilia Morrow / Adaeze Eze / Adedoyin Adesina / Ajeesh Sunny / Aleah Booker / Alejandra Duque / Aleksandr Tichter / Alexandra Alvarenga / Alexandra Fincher / Alexandra Regens / Alexandria Heinze / Alexis Batiste / Alice King /
    Alicia Bao / Alison Zill / Aliza Wong / Allison Teng / Alqassem Hakami / Amanda Barczyk / Amari Johnson / Amy Engler / Analisia Stewart / Anam Ahmed / Andrea Wallace / Andrew Anderson / Andrew Wapner / Angela Park / Anirudh Gadicherla / Anita Ramsetty / Anna Volerman / Anthony Duruewuru / Arkene Levy / Arlette Chavez / Armando Martinez / Ashley Alford / Ashly Paul / Asia Payne / Audrey Huang / Avery Allen / Ayleen Hernandez / Beau Meyer / Brian Downer / Brian Reed

    International Journal of Maternal and Child Health and AIDS, Vol 11, Iss 2s (2022)

    2022  

    Abstract: The fifth annual summer research summit organized by the Center of Excellence (COE) in Health Equity, Training and Research, Baylor College of Medicine (BCM), was held on May 17, 2022. The theme of this year’s summit was ‘Academic-Community Partnerships: ...

    Abstract The fifth annual summer research summit organized by the Center of Excellence (COE) in Health Equity, Training and Research, Baylor College of Medicine (BCM), was held on May 17, 2022. The theme of this year’s summit was ‘Academic-Community Partnerships: Change Agents for Advancing Health Equity.’ Given the ongoing pandemic, the summit was conducted virtually through digital platforms. This program was intended for both BCM and external audiences interested in advancing health equity, diversity, and inclusion in healthcare among healthcare providers and trainees, biomedical scientists, social workers, nurses, and individuals involved in talent acquisition and development, such as hiring managers (HR professionals), supervisors, college and hospital affiliate leadership and administrators, as well as diversity and inclusion excellence practitioners. We had attendees from all regions of the United States as well as from Saudi Arabia. The content in this Book of Abstracts encapsulates a summary of the research efforts by the BCM COE scholars (which includes post-baccalaureate students, medical students, clinical fellows, and junior faculty from BCM) as well as the external summit participants. The range of topics in this year’s summit was quite diverse, encompassing disparities in relation to maternal and child health (MCH), immigrant health, cancers, vaccination uptakes, and COVID-19 infections. Various solutions were ardently presented to address these disparities, including community engagement and partnerships, improvement in health literacy, and the development of novel technologies and therapeutics. With this summit, BCM continues to build on its long history of educational outreach initiatives to promote diversity in medicine by focusing on programs aimed at increasing the number of diverse and highly qualified medical professionals ready to introduce effective and innovative approaches to reduce or eliminate health disparities. These programs will improve information resources, clinical education, ...
    Keywords Public aspects of medicine ; RA1-1270
    Subject code 306
    Language English
    Publishing date 2022-09-01T00:00:00Z
    Publisher Global Health and Education Projects, Inc.
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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