Information
Ecological parameter: reproduction according to Tachet
Parameter group: life & body related parameters
Explanation:
This trait provides information on the reproduction type of a species and primarily focuses on egg oviposition. Both, sexual and asexual reproduction are taken into account. Asexual reproduction is dominantly represented in primitive phyla, but no details are given due to a general lack of information on most genera. Oviposition tactics are included in the reproductive strategy. Eight categories are defined.
Tachet, H., Bournaud, M., Richoux, P. & Usseglio-Polatera, P. (2010): Invertébrés d'eau douce - systématique, biologie, écologie. CNRS Editions, Paris, 600 p.
Additional information:
Note that several classifications of the Tachet database are on higher taxonomic level than on species level. To display them in the list please enable "include higher taxonomic units" in the "advanced search".
Abbreviations:
| Category name: | Abbreviations: | Explanation: |
|---|---|---|
| ovoviviparity | ovo | eggs remain within the mother's body until they hatch |
| isolated eggs, free | fie | separate eggs are laid down in the water freely |
| isolated eggs, cemented | cie | separate eggs are laid down and fixed |
| clutches, cemented or fixed | fic | groups of eggs are laid down and fixed |
| clutches, free | frc | groups of eggs are laid down in the water freely |
| clutches, in vegetation | vec | groups of eggs are laid down in the vegetation |
| clutches, terrestrial | tec | groups of eggs are laid down in the riparian zone |
| asexual reproduction | ase | reproduction without fertilisation |
| Taxagroup | Number of assigned taxa / total number of taxa - percentage |
|---|---|
| Bivalvia | 3 / 77 - 3.8% |
| Bryozoa | 6 / 19 - 31.5% |
| Coelenterata | 2 / 13 - 15.3% |
| Coleoptera | 52 / 2678 - 1.9% |
| Crustacea | 11 / 270 - 4% |
| Diptera (excl. Chironomidae) | 2 / 2404 - 0% |
| Ephemeroptera | 16 / 353 - 4.5% |
| Gastropoda | 15 / 241 - 6.2% |
| Heteroptera | 10 / 124 - 8% |
| Hirudinea | 10 / 68 - 14.7% |
| Kamptozoa | 1 / 1 - 100% |
| Lepidoptera | 4 / 19 - 21% |
| Nemertini | 1 / 1 - 100% |
| Odonata | 17 / 174 - 9.7% |
| Oligochaeta | 16 / 240 - 6.6% |
| Planipennia | 1 / 12 - 8.3% |
| Plecoptera | 9 / 576 - 1.5% |
| Polychaeta | 1 / 13 - 7.6% |
| Porifera | 3 / 12 - 25% |
| Trichoptera | 38 / 1439 - 2.6% |
| Turbellaria | 4 / 61 - 6.5% |