Person:
Trigo Aza, María Dolores

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First Name
María Dolores
Last Name
Trigo Aza
URI
https://hdl.handle.net/20.500.14352/74440
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Biológicas
Department
Biodiversidad, Ecología y Evolución
Area
Zoología
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2020 - 20212
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    The lab In A box: A take-out practical experience for an online invertebrate biology course
    (Invertebrate Biology, 2021) Novo Rodríguez, Marta; Sánchez Santos, Nuria; Gutiérrez López, Mónica; Cánovas, Rosario G.; Pardos Martínez, Fernando; Trigo Aza, María Dolores; Díaz Cosín, Darío J.
    Hands-on experience is critical to teaching invertebrate zoology, as students are unfamiliar with many animals and theoretical concepts are sometimes difficult to assimilate. As part of a fully online course, we decided to give students a box of take-home materials so that they could do hands-on work in their homes under the guidance of the teacher or at their own pace following the lecture scripts and presentations. The box contained whole specimens fixed in ethanol for observation and dissection, dried material such as skeletons and shells, and microscope slides. We also included a USB digital microscope to facilitate visualization of details and slides. The experience was very satisfying and proved to be not only a good alternative for mandatory online classes in times of pandemic, but also an interesting resource to supplement face-toface classes.
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    Does sediment composition sort kinorhynch communities?. An ecomorphological approach through geometric morphometrics
    (Scientific reports, 2020) Cepeda Gómez, Diego; Trigo Aza, María Dolores; Pardos Martínez, Fernando; Sánchez Santos, Nuria
    Ecomorphology studies the relationship between organisms’ morphology and environment features. To better understand whether the shape of the body and the appendages involved in the movement is correlated to sediment composition in meiofaunal organisms, we study the evolved morphological adaptations to environment in selected taxa of the phylum Kinorhyncha: the allomalorhagid families Dracoderidae and Pycnophyidae, and the cyclorhagid genus Echinoderes. The selected taxa include the most diverse groups of Kinorhyncha worldwide, representing the 75.5% of the total phylum diversity. Widened, plump bodies and lateral terminal spines may be adaptive for species living in coarse, more heterogeneous sediments, as they could maintain a more powerful musculature to actively displace the sediment grains applying a greater force. Conversely, slender, vermiform bodies and lateral terminal spines would represent an adaptation of species inhabiting fne, more homogeneous sediments where there would not be much need to exert a high force to displace the sediment particles, and a more vermiform shape would even favour the burrowing of the animal through the smaller interstices. The studied kinorhynch taxa would also be adapted to the higher velocity of the sea-water and the intense erosion and transportation of heterogeneous sediments by possessing more robust bodies, avoiding getting laid of substratum under these conditions. These fndings provide evolutionary evidence that body shape in the studied kinorhynch groups is adapted to environment.