La chèvre Draa est la seule des populations caprines marocaines qui peut être considérée comme une race bien distincte. C'est une sorte d'isolat génétique qui est localisée et élevée principalement dans les oasis de la vallée du Draa à un climat aride. Il ressort des études réalisées que le potentiel laitier de la chèvre Draa est satisfaisant (142 litres sur 150j de lactation). De même, l’évaluation des ses performances de reproduction en station a montré une prolificité de 158 % avec une aptitude à réaliser deux mises bas par an.

De plus, la chèvre Draa présente quelques capacités adaptatives pour produire et survivre dans les conditions arides. En effet, son turnover de l'eau corporelle est relativement faible comparativement aux races caprines européennes étudiées dans les mêmes conditions expérimentales. Enfin, la chèvre Draa présente une bonne capacité à préserver l'appétit en cas de privation d'eau. Ces caractéristiques de production et d'adaptation, prises ensemble, font d'elle un bon candidat pour le développement d'une race caprine laitière marocaine et pour continuer les efforts pour sa préservation, son amélioration et la connaissance de ses caractéristiques physiologiques.

Diet change in the cotton stainers, Dysdercus cardinalis and D.fasciatus, occasioned by their migration from Gossypium hirsutum (cotton) to alternate hosts Sterculia rhynchocarpa and Adansonia digitata, was overall beneficial to their bionomics. Only the host Abutilon mauritianum appeared to possess antibiotic effects against the fecundity, fertility and longevity of the stainers. The occurrence in tropical natural ecosystems of both suitable and unsuitable hosts appears to constitute a vital and a viable stainer population-regulatory mechanism. Overall, D. cardinalis exhibited superior reproductive parameters on a variety of diets than did D. fasciatus. The latter apparently suffered profound negative effects on its bionomics when feeding on certain hosts.

Adults of the Caribbean fruit fly, Anastrepha suspensa (Loew) were fed on three diets in order to identify one that was optimal for adult longevity, fecundity and egg viability. The diets were a dry mixture of Brewer's (hydrolysed) yeast and sugar (Diet A); Brewer's yeast, sugar, agar, and water (Diet B); and a dry commercial diet (BioServ) with Brewer's yeast, sugar and casein (Diet C). There were no significant differences in per cent adult mortality among the three diets. However, the longevity of females in Diet C was significantly reduced in comparison to that of females fed the other two diets. Diet C was also suboptimal for fecundity and egg viability. Diets A and B were optimal for and had similar effects on all parameters evaluated in this study. However, Diet A appeared to be the best if preparation time and ingredient costs are considered along with biological effects.

The effects of various exposure to irradiation from cesium 137 in nitrogen and air on survival and fecundity of Glossina palpalis palpalis were compared. With doses from 3 to 21 krad in nitrogen atmosphere, male fertility was inversely correlated with dose, above 15 krad male survival was inversely correlated with dose. All males subjected to either 21 krad in nitrogen or 15 krad in air were sterilized. Females appeared to be more sensitive to gamma-irradiation than males; a dose of 6 krad in nitrogen resulted in 100% sterility and arrested further development of the ovaries after the ovulation of follicles A1 and C1. In males, this dose caused 70.3% sterility. Approximately 97 and 98% sterility were obtained when males were treated with 15 krad in nitrogen and 12 krad in air respectively. No fly emerged from irradiated puparia younger than 15 days. Irradiation of 15 or 20 days old puparia killed the insect either before or shortly after eclosion, whereas the normal patterns of emergence, survival and reproduction were observed from puparia that were irradiated when 25 days old or older.

Effects of temperature on female longevity, fecundity and fertility of the sorghum shootfly, Atherigona seccata Rondani, were investigated. The longevity, preoviposition and oviposition periods, eggs per female per day, mean eggs per female and fertility (per cent eggs hatched), for the shootflies maintained at constant temperatures of 20, 25 and 30°C and alternating temperatures of 30°C (photophase) and 20°C (scotophase) referred to as 20–30°C were determined. At lower temperature (20°C), the longevity, preoviposition and oviposition periods were prolonged considerably, while daily egg production, mean fecundity and fertility were decreased. Higher temperature (30°C) had the reverse effect on preoviposition and oviposition periods as well as daily egg production. There was a significant positive correlation between the pupal weight and the number of eggs laid by the fly at 20°C. Egg mortality increased with advance in maternal age. The rate of increase in egg mortality was faster at 30°C than at lower temperatures.