A5046838012- Evolution and Paleontology Studies
- Morphological variations and asymmetry
- Insect and Pesticide Research
- Plant and animal studies
- Marine Biology and Ecology Research
- Plant Parasitism and Resistance
- Coral and Marine Ecosystems Studies
- Developmental Biology and Gene Regulation
- Marine Sponges and Natural Products
- Philosophy and History of Science
- Ichthyology and Marine Biology
- Earth Systems and Cosmic Evolution
- Paranormal Experiences and Beliefs
- Echinoderm biology and ecology
- Wildlife Ecology and Conservation
- Marine Ecology and Invasive Species
- Genetics, Bioinformatics, and Biomedical Research
University of Groningen
2022
Naturalis Biodiversity Center
2010-2021
Mammals as a rule have seven cervical vertebrae, except for sloths and manatees. Bateson proposed that the change in number of vertebrae is due to homeotic transformations. A recent hypothesis proposes unchanged instead derived pattern abnormal primaxial/abaxial patterning.We test detailed predictions from both hypotheses skeletal patterns manatees hypotheses. We find strong support Bateson's homeosis hypothesis. The observed vertebral rib cannot be explained by changes patterning. Vertebral...
The mammalian vertebral column is highly variable, reflecting adaptations to a wide range of lifestyles, from burrowing in moles flying bats. However, many taxa, the number trunk vertebrae surprisingly constant. We argue that this constancy results strong selection against initial changes these numbers fast running and agile mammals, whereas such weak slower-running, sturdier mammals. rationale require homeotic transformations into sacral vertebrae, or vice versa, mutations toward generally...
The Phyllidiidae (Gastropoda, Heterobranchia, Nudibranchia) is a family of colourful nudibranchs found on Indo-Pacific coral reefs. Despite the abundant and widespread occurrence many species, their phylogenetic relationships are not well known. present study first contribution to fill gap in our knowledge phylogeny by combining morphological molecular data. For that purpose 99 specimens belonging 16 species were collected at two localities Indonesia. They photographed used make...
Sponges frequently produce toxic secondary metabolites, especially in tropical coral reefs.These metabolites are thought to have evolved as a chemically mediated defence mechanism and highly effective against potential predators (Proksch 1994).Nudibranchs of the family Phyllidiidae feed on sponges order Halichondrida exploit this adaptation: they selectively sequester toxins employ them for their own protection (Ritson-Williams Paul 2007;Cimino Ghiselin 2009).Other than most dorid...