Artículo

Mensch, J.; Hurtado, J.; Zermoglio, P.F.; De La Vega, G.; Rolandi, C.; Schilman, P.E.; Markow, T.A.; Hasson, E. "Enhanced fertility and chill tolerance after cold-induced reproductive arrest in females of temperate species of the Drosophila buzzatii complex" (2017) Journal of Experimental Biology. 220(4):713-721
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Abstract:

Long-term exposure to low temperatures during adult maturation might decrease fertility after cold recovery as a consequence of carryover effects on reproductive tissues. This pattern should be more pronounced in tropical than in temperate species as protective mechanisms against chilling injuries are expected to be more effective in the latter. We initially determined the lower thermal thresholds to induce ovarian maturation in four closely related Drosophila species, two inhabiting temperate regions and the other two tropical areas of South America. As expected, only temperate species regularly experience cold-inducing conditions for reproductive arrest during winter in their natural environment. Subsequently, we exposed reproductively arrested and mature females to cold-inducing conditions for reproductive arrest over a long period. Following cold exposure, tropical species exhibited a dramatic fertility decline, irrespective of reproductive status. In contrast, not only were temperate females fecund and fertile but also fertility was superior in females that underwent cold-induced reproductive arrest, suggesting that it might act as a protecting mechanism ensuring fertility after cold recovery. Based on these findings, we decided to evaluate the extent to which reproductive status affects cold tolerance and energy metabolism at low temperature. We found a lower metabolic rate and a higher cold tolerance in reproductively arrested females, although only temperate species attained high levels of chill tolerance. These findings highlight the role of cold-induced reproductive arrest as part of an integrated mechanism of cold adaptation that could potentially contribute to the spread of temperate species into higher latitudes or altitudes. © 2017. Published by The Company of Biologists Ltd.

Registro:

Documento: Artículo
Título:Enhanced fertility and chill tolerance after cold-induced reproductive arrest in females of temperate species of the Drosophila buzzatii complex
Autor:Mensch, J.; Hurtado, J.; Zermoglio, P.F.; De La Vega, G.; Rolandi, C.; Schilman, P.E.; Markow, T.A.; Hasson, E.
Filiación:IEGEBA-CONICET-UBA, DEGE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, 1428, Argentina
IBBE-CONICET-UBA, DBBE, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, 1428, Argentina
Laboratorio Nacional de Genomica para la Biodiversidad, Guanajuato, 36824, Mexico
Division of Biological Sciences, University of California, San Diego, San Diego, CA 92093, United States
Palabras clave:Cold resistance; Insect; Metabolic rate; Ovarian arrest; Overwintering; Triglycerides; triacylglycerol; acclimatization; animal; basal metabolic rate; cold; Drosophila; energy metabolism; female; fertility; metabolism; ovary; physiology; season; South America; tropic climate; Acclimatization; Animals; Basal Metabolism; Cold Temperature; Drosophila; Energy Metabolism; Female; Fertility; Ovary; Seasons; South America; Triglycerides; Tropical Climate
Año:2017
Volumen:220
Número:4
Página de inicio:713
Página de fin:721
DOI: http://dx.doi.org/10.1242/jeb.150540
Título revista:Journal of Experimental Biology
Título revista abreviado:J. Exp. Biol.
ISSN:00220949
CODEN:JEBIA
CAS:Triglycerides
Registro:http://digital.bl.fcen.uba.ar/collection/paper/document/paper_00220949_v220_n4_p713_Mensch

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Citas:

---------- APA ----------
Mensch, J., Hurtado, J., Zermoglio, P.F., De La Vega, G., Rolandi, C., Schilman, P.E., Markow, T.A.,..., Hasson, E. (2017) . Enhanced fertility and chill tolerance after cold-induced reproductive arrest in females of temperate species of the Drosophila buzzatii complex. Journal of Experimental Biology, 220(4), 713-721.
http://dx.doi.org/10.1242/jeb.150540
---------- CHICAGO ----------
Mensch, J., Hurtado, J., Zermoglio, P.F., De La Vega, G., Rolandi, C., Schilman, P.E., et al. "Enhanced fertility and chill tolerance after cold-induced reproductive arrest in females of temperate species of the Drosophila buzzatii complex" . Journal of Experimental Biology 220, no. 4 (2017) : 713-721.
http://dx.doi.org/10.1242/jeb.150540
---------- MLA ----------
Mensch, J., Hurtado, J., Zermoglio, P.F., De La Vega, G., Rolandi, C., Schilman, P.E., et al. "Enhanced fertility and chill tolerance after cold-induced reproductive arrest in females of temperate species of the Drosophila buzzatii complex" . Journal of Experimental Biology, vol. 220, no. 4, 2017, pp. 713-721.
http://dx.doi.org/10.1242/jeb.150540
---------- VANCOUVER ----------
Mensch, J., Hurtado, J., Zermoglio, P.F., De La Vega, G., Rolandi, C., Schilman, P.E., et al. Enhanced fertility and chill tolerance after cold-induced reproductive arrest in females of temperate species of the Drosophila buzzatii complex. J. Exp. Biol. 2017;220(4):713-721.
http://dx.doi.org/10.1242/jeb.150540