| Full text | |
| Author(s): |
Panarelli, Eliana A.
[1]
;
Kawamura, Helen A. O.
[1]
;
Elmoor-Loureiro, Lourdes M. A.
[2]
;
Sousa, Francisco D. R.
[2, 3]
;
Corgosinho, Paulo H. C.
[4]
;
Previattelli, Daniel
[5]
;
Rocha, Carlos E. F.
[5]
Total Authors: 7
|
| Affiliation: | [1] Univ Estado Minas Gerais, Rua Mario Palmerio 1001, BR-38200000 Frutal, MG - Brazil
[2] Univ Fed Jatai, GEEA, BR 364 Km 195 3800, BR-75801615 Jatai, Go - Brazil
[3] Univ Fed Jatai, Unidade Acad Especial Ciencias Biol, BR 364 Km 195 3800, BR-75801615 Jatai, Go - Brazil
[4] Campus Univ Prof Darcy Ribeiro, UNIMONTES, Dept Gen Biol, BR-39401089 Montes Claros, MG - Brazil
[5] Univ Sao Paulo, Inst Biociencias, Rua Matao 321, BR-05508090 Sao Paulo, SP - Brazil
Total Affiliations: 5
|
| Document type: | Journal article |
| Source: | JOURNAL OF LIMNOLOGY; v. 78, n. 3, p. 323-335, 2019. |
| Web of Science Citations: | 0 |
| Abstract | |
Many taxonoinic issues still need to be solved for the family Chydoridae, but mainly in the subfamily Aloninae. The species Karualona muelleri is an example of a recent taxonomic redefinition, since it was decoupled from the genus Alona and translocated to another genus. In order to expand our knowledge on the species, we investigated population growth and compared the morphometry of the first and second instars, male, parthenogenetic female, ephippial female, and ephippium. An experimental population was obtained by hatching resting eggs collected from the sediment in a temporary lake located in the Serra da Canastra National Park (Minas Gerais. Brazil). The hatched individuals were subjected to morphometric analyses and used in experiments to assess population growth and fecundity. Reproductive age and lifespan were also monitored in two groups of females in different life stages: parthenogenetic and gamogenetic. The reproductive age occurred between the 1th and 15th days of life, and the greatest longevity was 17 days. The start of gamogenetic reproduction was stimulated by elevated population densities and it characterized the slowdown of exponential population growth. Morphometric analyses detected differences between the development phases, as well as similarities in the morphological features of the male. first and second instars, and the two types of females. (AU) | |