@article {2528, title = {Growth and reproduction of horse mackerel, Trachurus trachurus (Carangidae)}, journal = {Reviews in Fish Biology and Fisheries}, volume = {13}, number = {1}, year = {2003}, pages = {27-61}, publisher = {Springer}, abstract = {

There is a broad knowledge of the growth and reproduction of Trachurus trachurus, although important\ gaps still exist. Horse mackerel are a long-lived species, reaching up to 40 years of age. They have isometric\ growth, although the alometric parameter b may vary throughout the year and in relation to latitude. Growth to age\ 3 is rapid compared to slower growth later in life. Phenomena of density dependent growth have been observed\ in the northeast Atlantic. Horse mackerel are an asynchronous species. The following stages of atresia have been\ validated in horse mackerel: alpha, beta, and delta. The transition in females from the spawning state to post\ spawning is very fast. The spawning fraction in horse mackerel is estimated to be between 8.3\% and 20.9\%. Horse\ mackerel have a long spawning season (up to 8 months), which varies according to geography. Length at first\ 28\ maturity is between 16 and 25 cm, most commonly around 21 cm. Males mature at a slightly smaller length\ than females. The age at first maturity for females has been estimated to range from 2 to 4 years, depending on\ the geography. Batch fecundity has been estimated to range between 172\–209 oocytes per gram-female-weight.\ Female spawning lasts between 65 and 94 days. An individual female can release from 5 to 16 batches during\ the spawning period. The estimated potential annual relative fecundity ranges from 1040 to 3280 oocytes per\ gram-female-weight.

}, keywords = {growth, reproduction, αναπαραγωγή, ανάπτυξη}, url = {https://www.researchgate.net/publication/226117829_Growth_and_reproduction_of_horse_mackerel_Trachurus_trachurus_Carangidae}, author = {Abaunza, P. and Gordo, L. and Karlou-Riga, C. and Murta, A. and Eltink, A. and Garc{\'\i}a Santamar{\'\i}a, M. T. and Zimmermann, C. and Hammer, C. and Lucio, P. and Iversen, S. A.} } @article {2525, title = {Effects of salinity and temperature on reproductive and life span characteristics of clonal Artemia. (International Study on Artemia. LXVI)}, journal = {Hydrobiologia}, volume = {492}, year = {2003}, note = {Using Smart Source Parsing1 February; Record 662 of 2858 in Zoological Record v.139 2003}, pages = {191-199}, abstract = {

An apomictic clone of the tetraploid parthenogenetic Artemia population from M. Embolon (Thessaloniki, Greece) was assayed for 10 reproductive and life span characteristics under laboratory conditions (in various salinity and temperature regimes). Salinity was proved to have significant impact on the majority of the characters used in this study. Discriminant function analysis gave an overall prediction of 97.32\% over the three salinities (50, 80 and 120 ppt). The temperature of 30\ \°C seemed to be an extreme one affecting significantly nearly all of the studied variables. The overall prediction according to the discriminant analysis was 94.69\% among the three temperatures (22, 26 and 30\ \°C). The clone performed best at 80 ppt and 22\ \°C. The data presented in this study may generate useful suggestions to investigate the potentiality of using a single genetic lineage in order to visualize the effects of different environmental cues on a specific clone.

}, keywords = {life span, reproduction, salinity, temperature, αλατότητα, αναπαραγωγή, διάρκεια ζωής, θερμοκρασία}, url = {https://link.springer.com/article/10.1023/A:1024826702830}, author = {Theodoros J. Abatzopoulos and El Bermawi, N. and Vasdekis, Christos and Baxevanis, Athanasios D. and Sorgeloos, Patrick} }