Кариотип талышской жабы, Bufo eichwaldi (Amphibia: Bufonidae)

Д.В. Скоринов, Е.А. Березина, А.А. Кидов, К.А. Матушкина, Р.А. Пасынкова и С.Н. Литвинчук

Труды Зоологического института РАН, 2014, 318(4): 424–432 · https://doi.org/10.31610/trudyzin/2014.318.4.424

Резюме

Впервые дается описание кариотипа Bufo eichwaldi (2n = 22). В кариотипе присутствуют 12 крупных метацентриков (V), 8 мелких метацентриков (v) и 2 мелких субметацентрика (sv): 12 V + 8 v + 2 sv, NF = 44. По количеству хромосом и расположению ядрышкового организатора (на конце длинного плеча хромосом шестой пары) кариотип B. eichwaldi не отличается от таковых у близкородственных B. bufo и B. verrucosissimus. Основное различие – широкий гетерохроматиновый С-блок на длинных плечах хромосом десятой пары, который присутствует у B. eichwaldi и отсутствует у B. bufo и B. verrucosissimus. Кроме того, у талышской жабы хромосомы первой пары, как правило, крупнее по размеру, чем у двух других видов. Помимо этого, в кариотипе B. eichwaldi только хромосомы седьмой пары являются субметацентрическими, тогда как у B. bufo и B. verrucosissimus – четвёртой и седьмой.

Ключевые слова

кариотип, талышская жаба, центромерный индекс, Bufo eichwaldi, Bufo bufo, Bufo verrucosissimus

Поступила в редакцию 21 ноября 2014 г. · Принята в печать 15 декабря 2014 г. · Опубликована 25 декабря 2014 г.

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