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Article . 2023 . Peer-reviewed
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First approach to the study of atresia in the ovary of sardine, Sardina pilchardus (Walb.)

Authors: Pérez-Contreras, M.N. (María Nélida); Figueiredo, I. (Ivone);

First approach to the study of atresia in the ovary of sardine, Sardina pilchardus (Walb.)

Abstract

Se describen las cararteristicas del proceso de atresia en el ovario de Sardina pilchardus, de la península Ibérica, usando los mismos criterios adoptados para la anchoa, Engraulis mordax J., por Hunter and Macewicz (1985a). Los datos utilizados proceden de experimentos realizados en cultivo de laboratorio y de las muestras de campaña del Método de Producción Diaria de Huevos (DEPM) de 1988. La presencia de atresia en los ovarios de sardinas mantenidas en laboratorio es baja y la mayoría de los estados de atresia son del tipo de a-atresia. Se produjo un incremento del número de hembras con estados más avanzados de atresia al ser mantenidas éstas en inanición. Los datos de sardinas de la población demuestran que el porcentaje de ovarios con ouocitos vitelados atrésicos se incrementa después de la completa degeneración de los folículos postovulatorios. El proceso completo de degeneración de estos folículos no supera el período de 6 días.

The ovary atresia characteristics of sardine, Sardina pilchardus, on the Iberian Peninsula were described using the same nomenclature and criteria adopted for the northern anchovy, Engraulis mordax J., by Hunter and Maceuncz (1985a). The data used were based on sardine biological information obtained from laboratory experiments and Daily Egg Production Method (DEPM) survey samples. In the laboratory, the occurrence of atresia was low, and most atresia stages corresponded to a-stage. An increase in the number of females in more advanced degeneration stages was noted as starvation time increased. In the natural population, atresia stages mostly appeared after the complete degeneration or postovulatory follicles. The complete yolked oocyte atresia process took no more than 6 days.

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Spain
Keywords

Sardina, Atresia, Centro Oceanográfico de Vigo, Sardine, Pesquerías, Península Ibérica, Iberian Peninsula

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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