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Biodiversity of rodents in the agro-systems of Southeastern Tunisia: case of olive groves and fields of barley

Biodiversité des rongeurs dans les agrosystèmes du sud est Tunisien : cas des Oliveraies et des champs d’Orge

 

K. ETTISS 1,2

M. CHAMMEM 1

T. KHORCHANI 1

 

1 Laboratory of Livestock and Wildlife, Institute of Arid Regions of Medenine, Medenine 4119 – Tunisia

2 National Agricultural Institute of Tunis - University of Carthage, 43 Avenue Charles Nicolle, Tunis 1082- Tunisia.



Abstract – Our study presents an inventory of rodents in southeastern Tunisia. The species were caught in two agro-systems: The olive groves and the barley fields. Sampling period coincides with fructification phases which are marqued by the importane of rodents impact. The random trapping method was performed using 20 snap traps installed in the selected sites. Six species were captured and they belong to one family: it is the family of Muridea. Two species of Murinae were caught in olive groves (Meriones libycus and Psammomys obesus) and six species were found in barley fields: two Murinae (Meriones libycus, Psammomys obesus) and four Gerbillinae (Gerbillus henleyi, Gerbillus nanus, Gerbillus pyramidium and Gerbillus tarabuli).

Keywords : Rodents, trapping, olive groves, barley fields, Tunisia

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Fruit and oil Characteristics of Tunisian olive progenies obtained by controlled crosses

J. DRIDI1, 2

M. FENDRI2

M. AYADI3

F. JENDOUBI1, 2

M. MSALLEM2

A. LARBI2

 

National Institute of Agronomy of Tunis, University of Carthage, 43, Avenue Charles Nicolle, 1082 Tunis, Tunisia

Olive Tree Institute, 286, El Mahrajene City, 1082 Tunis, Tunisia

Olive Tree Institute, 1087, 3000 Sfax, Tunisia



Abstract – Thirteen olive progenies coming from controlled crosses on Tunisian olive cultivars (Meski and Chetoui) with autochthones and foreign cultivars were selected among 200 olive genotypes on the basis of their agronomic characteristics in a breeding program initiated in 1994. In this study, weight and flesh to seed ratio, oil content, specific absorption at ultraviolet light, free acid content, chlorophyll and carotenoid contents, total phenols and fatty acid composition of these progenies were determined and compared to their parents. The analysis of variance revealed significant differences among genotypes for all traits (p<0.01) except for UV extinction coefficients (K232 and K270). Some progenies showed superior features compared to their genitors.

Keywords: Fruit, oil characteristics, olive progenies, cross breeding

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Copyright

This article is published under license to Journal of New Sciences. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

CC BY 4.0