Assessing morphological differences in an adaptive trait: A landmark‐based morphometric approach
| العنوان: | Assessing morphological differences in an adaptive trait: A landmark‐based morphometric approach |
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| المؤلفون: | R. Craig Albertson, Thomas D. Kocher |
| المصدر: | Journal of Experimental Zoology. 289:385-403 |
| بيانات النشر: | Wiley, 2001. |
| سنة النشر: | 2001 |
| مصطلحات موضوعية: | Male, Biometry, Premaxilla, Labeotropheus fuelleborni, stomatognathic system, Cichlid, medicine, Animals, Selection, Genetic, biology, Feeding Behavior, General Medicine, Labeotropheus, Anatomy, biology.organism_classification, Adaptation, Physiological, Biological Evolution, Diet, stomatognathic diseases, Phenotype, medicine.anatomical_structure, Biting, Jaw, Perches, Evolutionary biology, Neurocranium, Morphological analysis, Trait, Hybridization, Genetic, Female, Animal Science and Zoology |
| الوصف: | East African cichlid fishes have evolved a stunning array of oral jaw morphologies. To better understand the adaptive evolution of this trait, we performed a morphological analysis of the jaws of two closely related species from Lake Malawi that have very different modes of feeding. Labeotropheus fuelleborni forages along the substrate with a "biting" mode of feeding, while Metriaclima zebra feeds in the water column with a "sucking" mode. We analyzed each of the four skeletal elements that make up the oral jaws: the dentary, articular, premaxilla, and maxilla. In addition, we performed the same analysis on the neurocranium, an element closely associated with the oral jaws. We used the thin-plate spline method to quantify morphological differences, which allowed us to relate our results to the functional biology of the species. We find many aspects of shape change that relate directly to the functional design of the cichlid head. The same series of measurements was made on hybrids between Labeotropheus and Metriaclima. For every character, hybrid progeny are statistically different from both parental species. These results suggest an additive mode of action of the alleles responsible for these phenotypes. |
| تدمد: | 1097-010X 0022-104X |
| DOI: | 10.1002/jez.1020 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c76774a8ad6f567b75ec7ed68236937f https://doi.org/10.1002/jez.1020 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....c76774a8ad6f567b75ec7ed68236937f |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1097010X 0022104X |
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| DOI: | 10.1002/jez.1020 |