Data/hora: 09/06/2024 13:55:13

Provedor de dados: 	16	
País: 	Netherlands	
Título: 	Searching for cryptic species in Erpobdella octoculata (L.) (Hirudinea: Clitellata): discordance between the results of genetic analysis and cross-breeding experiments	
Autores: 	Koperski, P.; Milanowski, R.; Krzyk, A.	
Data: 	2011	
Ano: 	2011	
Palavras-chave: 	COI; Cryptic species; Discordance; Hirudinea; ITS; Molecular taxonomy; 42.76.	
Resumo: 	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 should be treated as one, valid species, in spite of its great morphological variability. However, experimentally confirmed differences in reproductive success of individuals belonging to morphologically divergent forms may be explained by the presence of reproductive barriers between them. Visible incongruity between the results of DNA sequences and the experimental results is not easy to explain - this question definitely needs further studies. Different percentages of morphological forms noted in field samples, suggests an adaptive value for divergent colour patterns in different habitats. Such differences may be a result of diverse mortality of individuals differing in colour dwelling on different bottom substrate, caused by predation by benthivorous fish.	
Tipo: 	Article / Letter to the editor	
Identificador: 	http://www.repository.naturalis.nl/record/369712

http://www.repository.naturalis.nl/document/207765	
Formato: 	application/pdf	
Fonte: 	Contributions to Zoology (1383-4517) vol.80 (2011) nr.1 p.85	
Fonte: 	(c) Naturalis