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Title (Primary) Methodological recommendations for studying the causes of anomalies in natural populations of amphibians
Title (Secondary) Studies on anomalies in natural populations of amphibians = Untersuchungen zu Anomalien in natürlichen Populationen von Amphibien
Author Dubois, A.; Henle, K.;
Publisher Henle, K.; Dubois, A.;
Journal Mertensiella
Year 2017
Department NSF;
Volume 25 (Suppl. zu Salamandra)
Language englisch;
POF III (all) T12;
Keywords Amphibia; anomaly; experimental teratogenesis; field protocols; inheritance experiments; methodology; pattern analysis; regeneration experiments
UFZ wide themes RU1;
UFZ inventory Leipzig, Bibliothek, Hauptlesesaal, 00521048, 17-0740 DK: 597.6 Stu
Abstract The study of anomalies in natural populations of amphibians is a research field of its own, requiring a rigorous, careful and complex methodology. In order to draw reliable conclusions about the distribution, frequency, cause and conditions of appearance of a given anomaly in a population, data must be gathered at all stages of the study, both in the field and in the laboratory, and on both abnormal and normal specimens of all amphibian species occurring on a particular study site. The field survey protocol should involve a careful examination of all specimens and all ages of all amphibian species collected in the studied locations, and not only of those showing gross anomalies. Only then, will one obtain reliable data on the frequency of anomalies, on their distribution among sexes and age classes, on their variation in time and space and on their morpho-anatomy, including data on bilaterality and symmetry, degree of severity and association with syndromes. Specimens showing morphological, pigmentary or other anomalies should be brought back to the laboratory for long-term study on their evolutionary potential, regeneration and hybridization experiments, experimental gynogenesis and other surveys that will enable reliable conclusions to be drawn about their causes. If elevated frequencies of abnormal individuals are found, sites should be investigated for the presence and association of potential causes of the observed anomalies with patterns observed in the field. Field and laboratory experiments should be designed to test the effect(s) of hypothesized causes. Moreover, we stress the importance of differentiating between mutagenic factors (inducing hereditary mutations) and mere teratogenic factors (causing anomalies that are not hereditary). This is a point that is often overlooked and yet it is so important because the subsequent fate of the anomaly in a population can be very different in both cases.
ID 19689
Persistent UFZ Identifier http://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=19689
Dubois, A., Henle, K. (2017):
Methodological recommendations for studying the causes of anomalies in natural populations of amphibians
In: Henle, K., Dubois, A. (eds.)
Studies on anomalies in natural populations of amphibians = Untersuchungen zu Anomalien in natürlichen Populationen von Amphibien
Mertensiella 25 (Suppl. zu Salamandra)
Deutsche Gesellschaft für Herpetologie und Terrarienkunde (DGHT), Mannheim, p. 243 - 260