Consulta: subjectFacets:"Sibling species"
Registros recuperados: 5
Data/hora: 09/06/2024 02:40:34

Population structure of the Monocelis lineata (Proseriata, Monocelididae) species complex assessed by phylogenetic analysis of the mitochondrial Cytochrome c Oxidase subunit I (COI) gene
Provedor de dados: 74
Autores: Sanna,Daria; Lai,Tiziana; Francalacci,Paolo; Curini-Galletti,Marco; Casu,Marco.
Monocelis lineata consists of a complex of sibling species, widespread in the Mediterranean and Atlantic Ocean. Previous genetic analysis placed in evidence at least four sibling species. Nevertheless, this research was not conclusive enough to fully resolve the complex or to infer the phylogeny/phylogeography of the group. We designed specific primers aiming at obtaining partial sequences of the mtDNA gene Cytochrome c Oxidase subunit I (COI) of M. lineata, and have identified 25 different haplotypes in 32 analyzed individuals. The dendrogram generated by Neighbor-Joining analysis confirmed the differentiation between Atlantic and Mediterranean siblings, as well as the occurrence of at least two Mediterranean sibling species. Thus validated, the method...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microturbellaria; Sequencing; Sibling species; Phylogeography; Phylogeny.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000400031

Morphometric variability in populations of Palaemonetes spp. (Crustacea, Decapoda, Palaemonidae) from the Peruvian and Brazilian Amazon Basin
Provedor de dados: 76
Autores: García-Dávila,Carmen Rosa; Magalhães,Célio; Guerrero,José Camilo Hurtado.
Morphometric variability among shrimp populations of the genus Palaemonetes Heller, 1869 from seven lakes (Huanayo and Urcococha, in Peru; Amanã, Mamirauá, Camaleão, Cristalino e Iruçanga, in Brasil) in the Amazon Basin, presumably belonging to Palaemonetes carteri Gordon, 1935 and Palaemonetes ivonicus Holthuis, 1950, were studied. The morphometric studies were carried out from the ratios obtained from the morphometric characters. Multivariated analysis (Principal Components Analysis-PCA, Discriminant Function Analysis and Cluster Analysis) were applied over the ratios. Intra- and interpopulation variations of the rostrum teeth, and the number of spines in the male appendix, were analyzed through descriptive statistics and bivariate analysis (Spearman...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Palaemonetes; Morphometry; Amazon Basin; Sibling species; Freshwater shrimp.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212005000300013

The Holarctic species of the subgenus Allodorus Foerster s.s. of the genus Eubazus Nees (Hymenoptera: Braconidae)ae)
Provedor de dados: 16
Autores: Achterberg, C. van; Kenis, M.
Four new species of the subgenus Allodorus Foerster s.s. (= Eubazus semirugosus (Nees)-group s.s.; Braconidae: Helconinae) are described and illustrated: E. abieticola spec. nov. from France, Austria, Switzerland and Germany, E. elongatus spec. nov., E. ochyrus spec. nov., and E. heothinus spec. nov. from Canada. E. abieticola spec. nov. has been reared from Pissodes piceae (Illiger) (Coleoptera: Curculionidae) in the cambium layer of Abies alba Linnaeus, and E. heothinus spec. nov. from P. striatulus (Fabricius) in the trunk of Abies balsemea (Linnaeus). A key to the Holarctic species of the subgenus Allodorus s.s. is added. New synonyms are: Brachistes noctua Ratzeburg, 1844, B. firmus Ratzeburg, 1844, Sigalphus tenthredinum Hartig, 1847, and Calyptus...
Tipo: Article / Letter to the editor
Palavras-chave: Hymenoptera; Braconidae; Helconinae; Brachistini; Eubazus; Allodorus; Palaearctic; Nearctic; Holarctic; Key; Coleoptera; Curculionidae; Pissodes; Biology; Sibling species; 42.75.
Ano: 2000
URL: http://www.repository.naturalis.nl/record/216186

A Clarification of the Status of Four Taxa in the Ectoedemia Angulifasciella Group (Nepticulidae: Lepidoptera)
Provedor de dados: 16
Autores: Wilkinson, C.; Bryan, G.; Menken, S.B.J.; Nieukerken, E.J. van.
The status of the four taxa Ectoedemia angulifasciella, E. atricollis, E. rubivora and E. arcuatella, has always been in debate. They have now been studied using several different systematic methods, relating to morphology, gel electrophoresis, host plant differentiation, life histories and distribution. Evidence is given here which demonstrates that they should be regarded as two pairs of sibling species.
Tipo: Article / Letter to the editor
Palavras-chave: Ectoedemia angulifasciella; E. atricollis; E. rubivora; E. arcuatella; Sibling species; 42.75.
Ano: 1983
URL: http://www.repository.naturalis.nl/record/365073

Competition between the sibling species &lt;i&gt;Tisbe holothuriae&lt;/i&gt; and &lt;i&gt;T. battagliai&lt;/i&gt; (Harpacticoida)
Provedor de dados: 27
Autores: Bergmans, M.; Janssens, P.P.M.
The influence of the salinity on the performance of the sibling species &lt;i&gt;Tisbe holothuriae&lt;/i&gt; and &lt;i&gt;T. battagliai&lt;/i&gt; in pure and mixed cultures was studied, using laboratory stocks adapted to 32 pro mille for over 175 generations. Cohort studies show that &lt;i&gt;T. holothuriae&lt;/i&gt; has higher growth rates (R&lt;sub&gt;0&lt;/sub&gt; and r) at 32 pro mille, &lt;i&gt;T. battagliai&lt;/i&gt; at 20 pro mille. The latter's life cycle is much less affected by the difference in salinity. 'De Wit' replacement series were used to study competitive interactions. Without water renewal, &lt;i&gt;T. holothuriae&lt;/i&gt; eliminates its sibling species in less than 2 generations, apparently through chemical interference. With water...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Competition; Growth; Marine crustaceans; Phenology; Salinity; Sexual reproduction; Sibling species; Harpacticoida; Tisbe battagliai; Tisbe holothuriae.
Ano: 1988
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3121