M. Hernández, P. Casanueva, Javier Oscoz, L. F. Sánchez-Sastre, M. Ferreras‐Romero, Francisco Campos
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引用次数: 0
摘要
研究人员对伊比利亚五个种群的 Cordulegaster boltonii 雌雄幼虫标本(头宽和后翅鞘长)进行了两变量分析,目的是确定不同种群之间这些特征是否存在差异。结果表明,最南端的种群(安达卢西亚的 Los Alcornocales)两个变量的尺寸都较大,倒数第二阶段和最后阶段之间的生长率较低。冬季水温可能导致北方种群的幼虫生长停滞时间更长,幼虫期数的差异也可能是造成体型差异的原因。
Geographical variation in size of the three final stadia of Cordulegaster boltonii (Donovan, 1807) larvae in the Iberian Peninsula (Odonata: Cordulegastridae)
A two-variable analysis of male and female Cordulegaster boltonii larvae (head width and hindwing sheath length) in specimens from five Iberian populations was carried out with the objective of ascertaining whether these traits differ between populations. The results indicate that the southernmost population (Los Alcornocales, Andalusia) have larger sizes for both variables and a lower growth rate between the penultimate and final stadia. Winter water temperatures, which may cause a longer arrest of larval growth in northern populations, and possible differences in the number of larval stadia could be the origin of the size divergences.
期刊介绍:
International Journal of Odonatology (IJO) is aimed at providing a publication outlet for the growing number of students of Odonata. It will address subjects such as the ecology, ethology, physiology, genetics, taxonomy, phylogeny and geographic distribution of species. Reviews will be by invitation, but authors who plan to write a review on a subject of interest to the journal are encouraged to contact the editor.