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Teng Y, Ren C, Chen X, Shen Y, Zhang Z, Chai L, Wang H. Effects of cadmium exposure on thyroid gland and endochondral ossification in Rana zhenhaiensis. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2022; 92:103860. [PMID: 35367624 DOI: 10.1016/j.etap.2022.103860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 03/28/2022] [Accepted: 03/29/2022] [Indexed: 06/14/2023]
Abstract
Discovery of elevated concentrations of cadmium in the natural environment has increased awareness because of their potential threats. Amphibians are negatively affected due to their moderate sensitivity to cadmium. Here, we conduct acute and subchronic toxicity tests to examine whether, and to what extent, cadmium exposure disturbs metamorphosis, growth, and kinetic ability of Rana zhenhaiensis. We set different concentration treatment groups for the subchronic toxicity test (0, 10, 40, 160 μg Cd L-1). Our findings demonstrate that cadmium exposure reduces growth parameters and the cumulative metamorphosis percent of R. zhenhaiensis. Decreases in follicular size and follicular epithelial cell thickness of thyroid gland are found in the treatment group. Further, subchronic exposure to cadmium decreases ossification ratio of hindlimbs in all treatment. Also, adverse effects of cadmium exposure on aquatic tadpoles can result in the reduced physical parameters and weak jumping ability in adult frogs. In this sense, our study suggests that cadmium adversely influences body condition and metamorphosis of R. zhenhaiensis, damages thyroid gland and impairs endochondral ossification. Meanwhile, we speculated that cadmium-damaged thyroid hormones inhibit skeletal development, resulting in the poor jumping ability, which probably leads to reduced survival of R. zhenhaiensis.
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Affiliation(s)
- Yiran Teng
- College of Life Science, Shaanxi Normal University, Xi'an 710119, China
| | - Chaolu Ren
- College of Life Science, Shaanxi Normal University, Xi'an 710119, China
| | - Xiaoyan Chen
- College of Life Science, Shaanxi Normal University, Xi'an 710119, China
| | - Yujia Shen
- College of Life Science, Shaanxi Normal University, Xi'an 710119, China
| | - Zhiyi Zhang
- College of Life Science, Shaanxi Normal University, Xi'an 710119, China
| | - Lihong Chai
- School of Water and Environment, Chang'an University, Xi'an 710054, China; Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Chang'an University, Xi'an 710062, China
| | - Hongyuan Wang
- College of Life Science, Shaanxi Normal University, Xi'an 710119, China.
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Vassilieva AB, Smirnov SV. Increasing Hormonal Control of Skeletal Development: An Evolutionary Trend in Amphibians. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.733947] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The biphasic life history of amphibians includes metamorphosis, a complex developmental event that involves drastic changes in the morphology, physiology and biochemistry accompanying the transition from the larval to adult stage of development. Thyroid hormones (THs) are widely known to orchestrate this remodeling and, in particular, to mediate the development of the bony skeleton, which is a model system in evolutionary morphological studies of amphibians. Detailed experimental studies of the role of THs in the craniogenesis of diverse urodelan amphibians revealed that (i) these hormones affect both the timing and sequence of bone formation, (ii) TH involvement increases in parallel with the increase in divergence between larval and adult skull morphology, and (iii) among urodelans, TH-involvement in skull development changes from a minimum in basal salamanders (Hynobiidae) to the most pronounced in derived ones (Salamandridae and Plethodontidae). Given the increasing regulatory function of THs in urodelan evolution, we hypothesized a stronger involvement of THs in the control of skeletogenesis in anurans with their most complex and dramatic metamorphosis among all amphibians. Our experimental study of skeletal development in the hypo- and hyperthyroid yellow-bellied toad (Bombina variegata: Bombinatoridae) supports the greater involvement of THs in the mediation of all stages of anuran cranial and postcranial bones formation. Similar to urodelans, B. variegata displays enhancing TH involvement in the development of cranial bones that arise during larval ontogeny: while the hormonal impact on early larval ossifications is minimal, the skull bones forming during metamorphosis are strictly TH-inducible. However, in contrast to urodelans, all cranial bones, including the earliest to form, are TH-dependent in B. variegata; moreover, the development of all elements of the axial and limb skeleton is affected by THs. The more accentuated hormonal control of skeletogenesis in B. variegata demonstrates the advanced regulatory and inductive function of THs in the orchestration of anuran metamorphosis. Based on these findings, we discuss (i) changes in THs function in amphibian evolution and (ii) the role of THs in the evolution of life histories in amphibians.
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Fabrezi M, Cruz JC. Phenotypic Variation Through Ontogeny: Thyroid Axis Disruption During Larval Development in the Frog Pleurodema borellii. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.715988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Studies of the effects of thyroid hormones on larval development in the frog Xenopus spp. have provided baseline information to identify developmental constraints and elucidate genetic and hormonal mechanisms driving development, growth, and life history transitions. However, this knowledge requires data based on other anurans to complete a comprehensive approach to the understanding of larval developmental diversity and phenotypic variation through ontogeny. Mesocosm experiments provide realistic data about environmental conditions and timing; this information is useful to describe anuran larval development and/or analyze endocrine disruption. In this study, mesocosm experiments of the larval development of the frog Pleurodema borellii were conducted to explore the consequences of thyroid axis disruption; the sensitivity of tadpoles to the methimazole (2.66 mg/l) and thyroxine (T4) (1.66 μg/l) was compared. These concentrations were selected based on previous studies in Pleurodema borellii. We test the effects of methimazole and thyroxine on development in early exposure (from beginning of larval development) and late exposure, 18 days after hatching, with doses administered every 48 h. Tadpoles were evaluated 31 days after hatching. Methimazole caused moderate hypertrophy of the thyroid gland, alteration in the growth rates, differentiation without inhibition of development, and an increase of developmental variability. Thyroxine produced slight atrophy of the thyroid gland, accelerated growth rates and differentiation, and minor developmental variability. In tadpoles at stages previous to metamorphose, skull development (differentiation of olfactory capsules, appearance of dermal bones, and cartilage remodeling) seemed to be unaltered by the disruptors. Moreover, similar abnormal morphogenesis converged in specimens under methimazole and thyroxine exposures. Abnormalities occurred in pelvic and pectoral girdles, and vent tube, and could have been originated at the time of differentiation of musculoskeletal tissues of girdles. Our results indicate that premetamorphic stages (Gosner Stages 25–35) are sensitive to minimal thyroid axis disruption, which produces changes in developmental rates; these stages would also be critical for appendicular musculoskeletal morphogenesis to achieve the optimal condition to start metamorphosis.
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Cruz JC. Histo‐morphology of the thyroid gland during the larval development of
Pleurodema borellii
(Anura, Leptodactylidae). ACTA ZOOL-STOCKHOLM 2020. [DOI: 10.1111/azo.12354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Julio César Cruz
- Instituto de Bio y Geociencias del NOA CCT CONICET Salta‐Jujuy Salta Argentina
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Fabrezi M, Cruz JC. Evolutionary and developmental considerations of the diet and gut morphology in ceratophryid tadpoles (Anura). BMC DEVELOPMENTAL BIOLOGY 2020; 20:16. [PMID: 32723314 PMCID: PMC7388516 DOI: 10.1186/s12861-020-00221-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Accepted: 06/29/2020] [Indexed: 11/15/2022]
Abstract
BACKGROUND Before metamorphosis, almost all anuran tadpoles are omnivores. Larval carnivory occurs in some species and, it is associated with distinctive morphotypes. Obligatory carnivorous tadpoles exhibit structural changes in the gastrointestinal tract compared to larvae that are predominately omnivores. The most distinctive feature of the anuran family Ceratophyridae (three genera) overall is the enormous gape of adults. This feature increases their ability to capture extremely large and active prey. The larvae of Ceratophyrid genera are remarkably distinct from each other and carnivory has diversified in a manner unseen in other anurans. The larvae of one genus, Lepidobatrachus, has a massive gape like the adult. Herein, we report on larval developmental variation, diet, gross morphology of the gastrointestinal tract, and histology of the cranial segment of the gut before, during and after metamorphosis in larval series for the following ceratophryid species: Chacophrys pierottii, Ceratophrys cranwelli, Lepidobatrachus laevis and Lepidobatrachus llanensis. RESULTS We described patterns of larval development with variation in growth with consequence to the final size at the end of metamorphosis. These patterns seem to be influenced by food quantity/quality, and most predominant by animal protein. Prey items found in pre and post-metamorphic Lepidobatrachus spp. are similar. Tadpoles of Ceratophrys and Chacophrys (and other anurans) share a short cranial segment of the gut with an internal glandular, mucous secreting epithelium, a double coiled intestine and the sequence of metamorphic changes (tract is empty, the stomach differentiates and the intestine shortens abruptly). In contrast, Lepidobatrachus tadpoles have a true stomach that acquires thickness and increased glandular complexity through development. As larvae they have a short intestine without double coils, and the absence of intestine shortening during metamorphosis. CONCLUSIONS The larval development of the gastrointestinal tract of Lepidobatrachus is unique compared with that of other free-living anuran larvae. An abrupt metamorphic transformation is missing and most of the adult structural features start to differentiate gradually at the beginning of larval stages.
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Affiliation(s)
- Marissa Fabrezi
- Instituto de Bio y Geociencias del NOA, CCT CONICET Salta-Jujuy, Rosario de Lerma, Salta, República Argentina.
| | - Julio César Cruz
- Instituto de Bio y Geociencias del NOA, CCT CONICET Salta-Jujuy, Rosario de Lerma, Salta, República Argentina
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Cruz JC, Fabrezi M. Histology and microscopic anatomy of the thyroid gland during the larval development of
Pseudis platensis
(Anura, Hylidae). J Morphol 2019; 281:122-134. [DOI: 10.1002/jmor.21085] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 10/28/2019] [Accepted: 11/08/2019] [Indexed: 01/17/2023]
Affiliation(s)
- Julio César Cruz
- Instituto de Bio y Geociencias del NOACCT CONICET Salta‐Jujuy Salta Argentina
| | - Marissa Fabrezi
- Instituto de Bio y Geociencias del NOACCT CONICET Salta‐Jujuy Salta Argentina
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Grosso J, Baldo D, Costa CS, Natale GS, Candioti FV. Embryonic ontogeny of three species of Horned Frogs, with a review of early development in Ceratophryidae. J Morphol 2019; 281:17-32. [PMID: 31705582 DOI: 10.1002/jmor.21076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/17/2019] [Accepted: 10/11/2019] [Indexed: 01/06/2023]
Abstract
Horned Frogs of the family Ceratophryidae are conspicuous anurans represented by three endemic South American genera. Most ceratophryids inhabit semiarid environments, but three species of Ceratophrys occupy tropical or temperate humid areas. Several morphological and behavioral characters of larvae and adults are conserved across the family. Based on examination of specimens and accounts in the literature, the embryonic development of C. ornata, C. cranwelli, and the monotypic genus Chacophrys are described and compared with that of species of Lepidobatrachus. Ceratophryid embryos share a suite of morphological features and heterochronic shifts during development. Most features, such as gill structure, ciliation, early hatching, and precocious differentiation of the gut and hind limbs, are shared by all the species regardless the differences in the habitats that occupy. This is consistent with previous observations of some adult characters, and likely supports the hypothesis of an early diversification of ceratophryids in semiarid environments. Other embryonic features, such as the morphology and ontogeny of the oral disc and digestive tract, are correlated with larval feeding habits and vary within the family. The evolutionary and ecological significance of some conserved characters (e.g., gastrulation pattern, Type-A adhesive glands) and other taxon-specific features (e.g., nasal appendix) remain to be explored in the group.
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Affiliation(s)
- Jimena Grosso
- Unidad Ejecutora Lillo (CONICET-FML), San Miguel de Tucumán, Tucumán, Argentina
| | - Diego Baldo
- Instituto de Biología Subtropical (IBS, CONICET-UNaM), Laboratorio de Genética Evolutiva, Facultad de Ciencias Exactas, Universidad Nacional de Misiones, Posadas, Misiones, Argentina
| | - Carolina Salgado Costa
- Centro de Investigaciones del Medioambiente (CIM, UNLP-CONICET), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional La Plata, La Plata, Buenos Aires, Argentina
| | - Guillermo S Natale
- Centro de Investigaciones del Medioambiente (CIM, UNLP-CONICET), Departamento de Química, Facultad de Ciencias Exactas, Universidad Nacional La Plata, La Plata, Buenos Aires, Argentina
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Fabrezi M, Lozano VL, Cruz JC. Differences in responsiveness and sensitivity to exogenous disruptors of the thyroid gland in three anuran species. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 2019; 332:279-293. [PMID: 31613429 DOI: 10.1002/jez.b.22908] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 08/28/2019] [Accepted: 09/14/2019] [Indexed: 01/31/2023]
Abstract
Anuran larval development comprises tissues/organs/systems that are: exclusively of larvae, able to be remodelled, and those of postmetamorphic stages. Also, the anuran larval development is characterized by inter-related parameters: time, size and shape forming part of growth and differentiation. The anuran metamorphosis starts when growth and differentiation achieve a threshold that differs among species since it is regulated by a number of external (environmental) and internal (hormonal) processes. Here we explore the consequences of exogenous disruptors on the thyroid gland (e.g., methimazole and thyroxine as T4) of three species by immersing premetamorphic tadpoles in predetermined concentrations of the disruptors for short periods (10 or 16 days). The species were Pleurodema borellii, Leptodactylus chaquensis, and Dermatonotus muelleri, which all breed in small temporary ponds during the summer, but differ in their ecomorphology. The experiments were conducted to evaluate the effects of these substances on larval development (based in Gosner larval stages), morphometric variation in body parameters (snout-vent and total length by larval stages), and thyroid gland histopathology at the end of the assays. In P. borelli and L. chaquensis, methimazole produces significant increment of size measurements (nonparametric Kruskal-Wallis, p < .05) during stages of digit differentiation and induced thyroid gland hypertrophy. In the three species, T4 exposure accelerated limb development and caused atrophy of thyroid gland. Prolonged T4 exposure in L. chaquensis and D. muelleri triggered metamorphic transformation in the gut and skull cartilages. Discussion about interspecific differences in responsiveness and sensitivity elucidates the importance of hormonal signals to morphological evolution.
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Affiliation(s)
- Marissa Fabrezi
- Instituto de Bio y Geociencias del NOA, CCT CONICET Salta-Jujuy, Salta, República Argentina
| | - Verónica Laura Lozano
- Instituto de Bio y Geociencias del NOA, CCT CONICET Salta-Jujuy, Salta, República Argentina.,Depto. Ecología, Genética y Evolución, Facultad de Ciencias Exactas y Naturales and Instituto de Ecología, Genética y Evolución de Buenos Aires (IEGEBA) CONICET - Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Julio César Cruz
- Instituto de Bio y Geociencias del NOA, CCT CONICET Salta-Jujuy, Salta, República Argentina
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Fabrezi M, Quinzio SI, Goldberg J, Cruz JC, Pereyra MC, Wassersug RJ. Developmental changes and novelties in ceratophryid frogs. EvoDevo 2016; 7:5. [PMID: 26925212 PMCID: PMC4769514 DOI: 10.1186/s13227-016-0043-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 02/11/2016] [Indexed: 12/19/2022] Open
Abstract
The Neotropical frog genera Ceratophrys, Chacophrys and Lepidobatrachus form the monophyletic family Ceratophryidae. Although in- and out-group relationships are not fully resolved, the monophyly of the three genera is well supported by both morphological and molecular data. Much is known about the morphology of the ceratophryids, but there is little comparative information on how modification of a common ancestral developmental pathway played a role in shaping their particular body plans. Herein, we review morphological variation during ceratophryid ontogeny in order to explore the role of development in their evolution. The ceratophryids are collectively characterized by rapid larval development with respect to other anurans, yet the three genera differ in their postmetamorphic growth rates to sexual maturity. Derived traits in the group can be divided into many homoplastic features that evolved in parallel with those of anurans with fossorial/burrowing behaviors in semiarid environments, and apomorphies. Morphological novelties have evolved in their feeding mechanism, which makes them capable of feeding on exceptional large prey. Lepidobatrachus is unusual in having reduced the ecomorphological differences between its larvae and adults. As a result, both the larvae and the frog are similarly able to capture large prey underwater. Some unique features in Lepidobatrachus are differentiated in the tadpole and then exaggerated in the adult (e.g., the posterior displaced jaw articulation) in a manner unobserved in any other anurans.
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Affiliation(s)
- Marissa Fabrezi
- />Instituto de Bio y Geociencias (IBIGEO), Centro Científico Tecnológico CONICET-Salta, 9 de Julio 14, 4405 Rosario de Lerma, Salta Republic of Argentina
| | - Silvia Inés Quinzio
- />Instituto de Bio y Geociencias (IBIGEO), Centro Científico Tecnológico CONICET-Salta, 9 de Julio 14, 4405 Rosario de Lerma, Salta Republic of Argentina
| | - Javier Goldberg
- />Instituto de Bio y Geociencias (IBIGEO), Centro Científico Tecnológico CONICET-Salta, 9 de Julio 14, 4405 Rosario de Lerma, Salta Republic of Argentina
| | - Julio César Cruz
- />Instituto de Bio y Geociencias (IBIGEO), Centro Científico Tecnológico CONICET-Salta, 9 de Julio 14, 4405 Rosario de Lerma, Salta Republic of Argentina
| | - Mariana Chuliver Pereyra
- />Instituto de Bio y Geociencias (IBIGEO), Centro Científico Tecnológico CONICET-Salta, 9 de Julio 14, 4405 Rosario de Lerma, Salta Republic of Argentina
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Faivovich J, Nicoli L, Blotto BL, Pereyra MO, Baldo D, Barrionuevo JS, Fabrezi M, Wild ER, Haddad CF. Big, Bad, and Beautiful: Phylogenetic Relationships of the Horned Frogs (Anura: Ceratophryidae). SOUTH AMERICAN JOURNAL OF HERPETOLOGY 2014. [DOI: 10.2994/sajh-d-14-00032.1] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Julián Faivovich
- División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”—Consejo Nacional de Investigaciones Científicas y Técnicas, Ángel Gallardo 470, C1405DJR, Buenos Aires, Argentina
| | - Laura Nicoli
- División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”—Consejo Nacional de Investigaciones Científicas y Técnicas, Ángel Gallardo 470, C1405DJR, Buenos Aires, Argentina
| | - Boris L. Blotto
- División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”—Consejo Nacional de Investigaciones Científicas y Técnicas, Ángel Gallardo 470, C1405DJR, Buenos Aires, Argentina
| | - Martín O. Pereyra
- División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”—Consejo Nacional de Investigaciones Científicas y Técnicas, Ángel Gallardo 470, C1405DJR, Buenos Aires, Argentina
| | - Diego Baldo
- Laboratorio de Genética Evolutiva, Instituto de Biología Subtropical (Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional de Misiones), Facultad de Ciencias Exactas Químicas y Naturales, Universidad Nacional de Misiones, N
| | - J. Sebastián Barrionuevo
- División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”—Consejo Nacional de Investigaciones Científicas y Técnicas, Ángel Gallardo 470, C1405DJR, Buenos Aires, Argentina
| | - Marissa Fabrezi
- Instituto de Bio y Geociencias del NOA, Centro Científico Tecnológico-Salta, Consejo Nacional de Investigaciones Científicas y Técnicas, 9 de Julio 14, 4405, Rosario de Lerma, Salta, Argentina
| | - Erik R. Wild
- Department of Biology and Museum of Natural History, University of Wisconsin-Stevens Point. Stevens Point, Wisconsin, 54022, USA
| | - Célio F.B. Haddad
- Departamento de Zoologia, Instituto de Biociências, Universidade Estadual Paulista, Avenida 24A1515, CEP 13506-900, Rio Claro, São Paulo, Brazil
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