Geographic and ontogenetic patterns of chaetotaxy variation in glacial relict Saduria entomon (L.) (Crustacea, Isopoda): Inter-population, inter-individual and intra-individual variations (fluctuating asymmetry)

Dmitry Lajus, Monika Ciostek, Małgorzata Makowiecka, Tadeusz Sywula

Результат исследований: Научные публикации в периодических изданияхстатья

5 Цитирования (Scopus)

Аннотация

We studied the variation in the number of chaetae of 15 characters in Saduria entomon (L.) (Crustacea, Isopoda) from the Baltic (2 samples), White, and south-eastern Barents Seas. The following parameters were analysed: (i) means, (ii) inter-individual variance, (iii) intra-individual or stochastic variance measured by fluctuating asymmetry, i.e. random deviations from perfect bilateral symmetry, which is a measure of developmental instability. The samples from the Baltic Sea were characterised by a greater number of chaetae than those from the White and Barents Seas in almost all characters. Inter-individual variance in the Barents Sea sample was lower than in the other samples, possibly because of low genetic variation. Fluctuating asymmetry was the least in the sample from the Baltic Sea (Gulf of Gdańsk), indicating that environmental conditions in this location are the most favourable. In juveniles the magnitude of the fluctuating asymmetry and its contribution to the total variance was higher than in adults.

Язык оригиналаанглийский
Страницы (с-по)411-429
Число страниц19
ЖурналAnnales Zoologici Fennici
Том40
Номер выпуска5
СостояниеОпубликовано - 9 дек 2003

Предметные области Scopus

  • Экология, эволюция поведение и систематика
  • Экология
  • Зоология и животноводство
  • Природа и охрана ландшафта

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