Influence of temperature and conductivity on the life-history characteristics of a pampean strain of Brachionus plicatilis
| Autor: | Nestor Adrian Gabellone, Hernan Hugo Benitez, Maria Cristina Claps, Noelia Soledad Ferrando |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Male rotifero eurihalino Salinity Temperature salinity diagrams Lowest temperature recorded on Earth Argentina Rotifera salinidad Conductivity 010603 evolutionary biology 01 natural sciences Zooplankton salinity purl.org/becyt/ford/1 [https] Ciencias Biológicas Animal science cultivos en laboratorio Abundance (ecology) Dominance (ecology) Ciencias Naturales Animals purl.org/becyt/ford/1.6 [https] Experimental Culture lcsh:Science experimental cultures Population Density Multidisciplinary euryhaline rotifer biology temperatura 010604 marine biology & hydrobiology tasa de crecimiento poblacional Reproduction Temperature temperature Brachionus Biología Marina Limnología biology.organism_classification Environmental science growth rate lcsh:Q Female Seasons CIENCIAS NATURALES Y EXACTAS |
| Zdroj: | Anais da Academia Brasileira de Ciências, Iss 0 (2018) Anais da Academia Brasileira de Ciências, Volume: 90, Issue: 2, Pages: 1431-1444, Published: 14 MAY 2018 Anais da Academia Brasileira de Ciências, Issue: ahead, Published: 14 MAY 2018 Anais da Academia Brasileira de Ciências v.90 n.2 2018 Anais da Academia Brasileira de Ciências Academia Brasileira de Ciências (ABC) instacron:ABC SEDICI (UNLP) Universidad Nacional de La Plata instacron:UNLP CIC Digital (CICBA) Comisión de Investigaciones Científicas de la Provincia de Buenos Aires instacron:CICBA CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
| ISSN: | 1678-2690 |
| Popis: | In the present work, we provide the first approach about the life-history of Brachionus plicatilis in South America. We tested with laboratory experiments the response of the pampean strain of B. plicatilis for two of its main stressors (conductivity and temperature). We evaluated the effects of eight conductivity values from 1 to 17 mS.cm-1 and two temperatures (15 and 25 °C) to compare its abundance with those obtained in the pampean lotic and lentic environments, where this rotifer is frequent or dominant. The results demonstrated that the increase in population-growth rate and the peak of abundance occurred at the highest temperature and at medium conductivity. Minimum values were obtained at the lowest temperature and conductivities analyzed, but the final density attained was nevertheless similar to those recorded in the pampean environments at the optimum conductivity and during the spring and summer seasons. Males, mictic females, and resting eggs were observed at the minimum and maximum conductivities, revealing the strategy of this species for maintaining dominance in environments with fluctuating salinity. The experiments also indicated the possible behavior of this relevant member of the zooplankton community within a scenario of increasing temperature and salinity related to the climate changes occurring in the pampean region. Instituto de Limnología "Raúl A. Ringuelet" |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|