INTRA- AND INTERPOPULATION VARIABILITY OF SOME PARTS OF THE COPULATIVE APPARATUS OF TERRESTRIAL MOLLUSC BREPHULOPSIS CYLINDRICA FROM THE NORTHERN BLACK SEA COAST REGION
Abstract
During the study of the first detected local population of Brephulopsis cylindrica (Menke, 1828) on the adjacent territory of Lake Solonets-Tuzla, which is located in the Berezansky district of the Mykolaiv region, morphological features of the copulative apparatus structure were revealed. The nature of the distribution of features and their variability were analyzed. The elements of the copulative apparatus, the most significant in copulation, vary the least in linear terms. The appendages of the copulative apparatus tend to reduce. The specificity of the indicators of the copulative apparatus of individuals of the population is proved, which is a significant addition to the complex approach in the identification of the species of terrestrial mollusks B. cylindrica.
The average values of the elements of the copulative apparatus of individuals of the species from the population of the adjacent territory of Lake Solonets-Tuzla were lower than in other studied populations. In most cases, these differences are statistically reliable (р˂0.05). The length and thickness of the epiphalus differ significantly from almost all populations of the Northern Black Sea Coast, as a specific feature that within the population acquires certain stability due to the function of spermatophore formation.
Microevolutionary processes in the population of B. cylindrica from the adjacent territory of Lake Solonets-Tuzla are active, specific and depend on the localization factor. The presence of a full-fledged local population on saline soil confirms the high level of ecological plasticity of the studied species of mollusks. Meristic and plastic indicators of flagellum are under a significant level of genetic control. The elements of the reproductive system vary the least, the most important in the implementation of copulation. The appendages of the genitals tend to reduce.
References
2. Крамаренко СС. Фенотипическая изменчивость крымских моллюсков рода Brephulopsis Lindholm (Gastropoda, Pulmonata, Buliminidae) [диссертация]. К.; 1995. 125 с.
3. Пузанов ИИ. Моллюски степного Крыма. Бюллетень МОИП: Материалы к познанию наземных моллюсков Крыма. Отд. биол. 1926;35(ІІ):84-101.
4. Лихарев ИМ. Наземные моллюски [горного Крыма] М.; Л.: Изд-во АН СССР, 1958;5. 656 с.
5. Шилейко АА. Наземные моллюски подотряда Pupillina фауны СССР (Gastropoda, Pulmonata, Geophila). Л.: Наука, 1984;3(3) №35. 399 с.
6. Крамаренко СС, Сверлова НВ. До вивчення внутрішньовидової мінливості Chondrula tridens (Gastropoda, Pulmonata, Buliminidae) на заході України та з’ясування таксономічного статусу окремих форм. Наук. зап. держ. природ. музею. 2003;18:93-110.
7. Лакин ГФ. Биометрия. М.:Высш. шк., 1980. 293 с.
8. Хохуткин ИМ. Структура изменчивости видов на примере наземных моллюсков. Екатеринбург: УрО РАН, 1997. 176 с.
9. Вычалковская НВ. Внутри- и межпопуляционная изменчивость полового аппарата наземного моллюска Brephulopsis cylindrica (Pulmonata, Buliminidae). Вісник проблем біології та медицини: Український науково-практичний журнал. Полтава: ВДНЗУ «УМСА»; 2011. Вип. 3, Т 1(87): 28-31.
10. Вычалковская НВ. Полиморфизм в строении полового аппарата наземного моллюска Brephulopsis cylindrica. Науковий вісник Миколаївського державного університету імені В.О. Сухомлинського. Серія «Біологічні науки». Миколаїв: МНУ імені В.О. Сухомлинського; 2014. Вип. 6.2(107): 111-115.
11. Вычалковская НВ. Наземные моллюски Brephulopsis cylindrica (Menke,1828) в Северном Причерноморье (распространение, морфологическая изменчивость и аутэкология): дис. …канд. биол. наук: 03.00.08 - К.; 2009. 156 с.
12. Croll RP. Gastropod chemoreception. Biological Reviews. 1983;58:293-319.
13. Chase R. Lessons from snail tentacles. Chemical Senses. 1986;11:411-426.
14. Baur B. Random mating by size in the simultaneously hermaphroditic land snail Arianta arbustorum: experiments and an explanation. Animal Behaviour. 1992;43:511-518.