Search results for "Introductions"

showing 2 items of 2 documents

Introduction of Mysis relicta (Mysida) reduces niche segregation between deep-water Arctic charr morphs

2019

This is a post-peer-review, pre-copyedit version of an article published in Hydrobiologia. The final authenticated version is available online at https://doi.org/10.1007/s10750-019-3953-4. Niche diversification of polymorphic Arctic charr can be altered by multiple anthropogenic stressors. The opossum-shrimp (Mysis relicta) was introduced to compensate for reduced food resources for fish following hydropower operations in Lake Limingen, central Norway. Based on habitat use, stomach contents, stable isotopes (δ13C, δ15N) and trophically transmitted parasites, the zooplanktivorous upper water-column dwelling ‘normal’ morph was clearly trophically separated from two sympatric deep-water morphs…

0106 biological sciencesHydrobiologiaanimal structuresgenetic structuresMysis relictaistutus (eläimet)stable isotopes:Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 [VDP]Aquatic Science010603 evolutionary biology01 natural sciencesZooplanktonäyriäisetpolymorphismnieriäeriytyminenhydropower effectsloisetVDP::Mathematics and natural scienses: 400::Zoology and botany: 48014. Life underwaterspecies introductionsecological divergencereproductive and urinary physiologySalvelinus alpinusbiologyEcology010604 marine biology & hydrobiologyfungiNiche segregationPlanktonbiology.organism_classificationDeep waterekologinen lokeroMysidaArcticVDP::Matematikk og naturvitenskap: 400::Zoologiske og botaniske fag: 480parasite communitypsychological phenomena and processes
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Trade and stowaways: molecular evidence for human-mediated translocation of eastern skinks into the western Mediterranean

2020

Human movements in the regions surrounding the Mediterranean Sea have caused a great impact in the composition of terrestrial fauna due to the introductions of several allochthonous species, intentionally or not. Reptiles are one of the groups where this anthropic impact is most evident, owing to the extensive intra-Mediterranean dispersals of recent chronologies. Chalcides ocellatus is a widespread skink with a natural distribution that covers almost the entire Mediterranean Basin. Two hypotheses have been proposed to explain its origin: natural dispersions and human translocations. Previous molecular data suggest the occurrence of a recent dispersal phenomenon across the Mediterranean Sea…

0106 biological sciencesMediterranean climateSkinkFaunaPopulation010607 zoologySpecies dispersal010603 evolutionary biology01 natural sciencesMediterranean BasinMediterranean seaMediterranean SeaeducationChalcides ocellatusEcology Evolution Behavior and Systematicseducation.field_of_studybiologyEcologyReptilesDNAbiology.organism_classificationChalcides ocellatusIntroductionsSpainBiological dispersalAnimal Science and ZoologyAmphibia - Reptilia
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