Search for dissertations about: "cryptic species"
Showing result 11 - 15 of 50 swedish dissertations containing the words cryptic species.
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11. Systematics of Marionina (Annelida: Clitellata: Enchytraeidae)
Abstract : This thesis is about species of segmented worms that previously were placed in the genus Marionina Michaelsen, 1890, within the family Enchytraeidae, class Clitellata and phylum Annelida. These species are closely related to earthworms, but are much smaller and many of them are found between the sand grains in marine beaches. READ MORE
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12. Taxonomy and phylogeny of polychaetes
Abstract : Polychaetes are a large group of segmented worms that display an enormous morphological diversity. Molecular data has shown in recent years that groups previously thought to be separate from polychaetes are actually part of the group. READ MORE
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13. Hidden Creatures – systematics of the Euphorinae (Hymenoptera)
Abstract : Parasitic wasps constitute one of the last remaining frontiers in the charting of animal diversity. The Braconidae is the second most species-rich family of parasitic wasps; the world fauna has been estimated at 40 000 species and the Swedish fauna is believed to include a little more than 2 000 species, 1 200 of which are currently documented. READ MORE
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14. Systematics of Grania (Clitellata: Enchytraeidae), an interstitial annelid taxon
Abstract : In between the grains of sand on the ocean floor, there exists a world which few people are aware of. Representatives of almost all animal phyla can be found here. READ MORE
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15. Evolution of annelid diversity at whale-falls and other marine ephemeral habitats
Abstract : When whales die and sink to the sea-floor, they provide a sudden, enormous food supply to organisms in the vicinity. At first, larger mobile scavengers remove the flesh, but also when only the bones remain, the whale-fall can still sustain macrofauna communities for several years. READ MORE