|
|
|
|
|
| Koperski, P.; Milanowski, R.; Krzyk, A.. |
| The main aim of this study was to reveal reproduction barriers and potentially cryptic radiation within the very common and morphologically variable leech species - Erpobdella octoculata (L., 1758). The differences in reproductive success of the morphological forms were compared experimentally. The data based on the results of field sampling and analysis of ITS and COI sequences is also presented. The results of the analysis of DNA sequences clearly show lack of reproduction barriers between the analysed morphological forms. Subtle differences in DNA sequences between individuals, found with the use of the arbitrary primers method, seem to be related mainly to geographical distance between sub-populations. On the basis of these results, E. octoculata... |
| Tipo: Article / Letter to the editor |
Palavras-chave: COI; Cryptic species; Discordance; Hirudinea; ITS; Molecular taxonomy; 42.76. |
| Ano: 2011 |
URL: http://www.repository.naturalis.nl/record/369712 |
| |
|
|
| Bloom,Devin D.; Egan,Joshua P.. |
| ABSTRACT Clupeiformes (herring, sardines, shad, anchovies and allies) are a globally distributed clade with nearly 400 marine, freshwater, and diadromous species. Although best known as filter feeding fishes that form large schools, this group occupies a diverse array of trophic guilds and habitats. Theory suggests that species richness in clades is modulated by ecological limits, which results in diversity-dependent clade growth, a pattern that most clades exhibit. As a trans-marine/freshwater clade that has undergone repeated transitions between marine and freshwaters, Clupeiformes are an excellent system for investigating the interplay between ecological diversity and macroevolutionary dynamics. In this study we review the systematics of Clupeiformes... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Congruence; Comparative methods; Discordance; Diversification; Diversity-dependent. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000300201 |
| |
|
|
|
