Genetic and morphological analysis of Tunisian populations of<i>Porcellio variabilis</i>Lucas (Crustacea, Isopoda, Oniscidea)

Medini-Bouaziz, Lamia; Montesanto, Giuseppe; Charfi‐Cheikhrouha, Faouzia; Caruso, Domenico; Lombardo, Bianca Maria

doi:10.1080/11250000600679991

Cited by 12 publications

(11 citation statements)

References 9 publications

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“…These differences were a response to environmental variables rather than being a species-specific trait [33]. In order to better understand the importance of these factors in affecting breeding patterns, it would be interesting to study other populations of P. variabilis, especially the Ain Drahem population which seemed to be the most morphologically and genetically distinct [34].…”

Section: Identification Life Span and Recruitment Of Cohortsmentioning

confidence: 99%

Reproductive traits of Porcellio variabilis Lucas, 1946 (Isopoda, Oniscidea) from Tunisia

2015

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Abstract:The breeding phenology and reproductive strategies of Porcellio variabilis were investigated, both in field and laboratory, in the population of Béja (North of Tunisia). P. variabilis Lucas, 1946 is characterized by a seasonal reproduction period followed by a sexual rest phase during November, December and January. Mean fecundity showed a great seasonal variation ranging between 29.612 eggs for females caught in the late summer, and 125.920 eggs for those collected in the spring. P. variabilis is an iteroparous species; females were able to produce one (95% of females), two (40% of females) or three broods (20% of females) during their reproduction period. The duration of the gestation period ranged from 34 days in the first brood to 14 days in the third one. Energy allocated to reproduction decreased from the first brood (26.29%) to the last one (4.618%). During the sampling period, eight cohorts were identified, each exhibiting a variable life span estimated around 6 months for cohorts born in early spring, and 12 months for those born in the fall. According to our present results and previous studies in another population of P. variabilis in Tunisia, we discuss factors of variability in breeding phenology in this species.

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Section: Identification Life Span and Recruitment Of Cohortsmentioning

confidence: 99%

Reproductive traits of Porcellio variabilis Lucas, 1946 (Isopoda, Oniscidea) from Tunisia

2015

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“…Some illustrations made with the method of the present paper, were already published in other articles about terrestrial isopods: figure 1 in Medini-Bouaziz et al (2006); figure 2 in Montesanto et al (2007); figures 2, 3 in Montesanto et al (2008); figures 1–5 in Montesanto et al (2011); figures 1, 2 in Messina et al (2011); figure 1 in Messina et al (2012); figures 6, 7, and 9 in Montesanto et al (2012); figure 1 in Lupetti et al (2013); figures 2, 3 in Montesanto et al (2013); figures 1–6 in Messina et al (2014). Some indications about drawing terrestrial isopods for taxomomic papers are reported in Figure 7, whereas magnifications show the differences of the brush size for different anatomical parts.…”

Section: Resultsmentioning

confidence: 93%

A fast GNU method to draw accurate scientific illustrations for taxonomy

Montesanto¹

2015

Self Cite

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Nowadays only digital figures are accepted by the most important journals of taxonomy. These may be produced by scanning conventional drawings, made with high precision technical ink-pens, which normally use capillary cartridge and various line widths. Digital drawing techniques that use vector graphics, have already been described in literature to support scientists in drawing figures and plates for scientific illustrations; these techniques use many different software and hardware devices. The present work gives step-by-step instructions on how to make accurate line drawings with a new procedure that uses bitmap graphics with the GNU Image Manipulation Program (GIMP). This method is noteworthy: it is very accurate, producing detailed lines at the highest resolution; the raster lines appear as realistic ink-made drawings; it is faster than the traditional way of making illustrations; everyone can use this simple technique; this method is completely free as it does not use expensive and licensed software and it can be used with different operating systems. The method has been developed drawing figures of terrestrial isopods and some examples are here given.

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“…In this last mentioned country, some studies were performed on reproductive behaviour, systematics, and geographical distribution of species of Hemilepistus, Porcellio, Porcellionides, and Armadillidium (cf. Rezig & Nasri, 1992;Nasri et al, 1996;Medini & Charfi-Cheikhrouha, 1998Achouri & Charfi-Cheikhrouha, 2000, 2001a, b, 2002, 2005, 2006Medini et al, , 2006Achouri et al, 2003;Hamaied & Charfi-Cheikhrouha, 2007).…”

Section: Introductionmentioning

confidence: 99%

The diversity of terrestrial Isopoda in the Berkoukech area, Kroumirie, Tunisia

Achouri¹,

Hamaïed²,

Charfi‐Cheikhrouha³

2008

Crustac

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Until now, no investigations have been made on the diversity of woodlice in any region of Tunisia. In the framework of the "MEDCORE" project, particular emphasis has been put on the study of terrestrial isopod diversity in the Berkoukech area (north-west of Tunisia). Two sites were selected for this study: the beach dune system and an inland site located in Rabouet Bou Ali.In the beach dune system, isopods were studied in three biotopes: a grazed meadow (biotope 1), a maquis of Pistacia lentiscus, Quercus coccifera, Erica arborea, Phylleria angustifolia, and Callycotome villosa (biotope 2), and a climax forest of Quercus coccifera, Juniperus oxycedrus, Juniperus phoenicea, and Callycotome villosa (biotope 3). In Rabouet Bou Ali, a Quercus suber forest (biotope 4) was chosen for study.In the Berkoukech area, 12 species of terrestrial isopods belonging to five families were collected: Tylidae, Porcellionidae, Philosciidae, Platyarthridae, and Armadillidiidae. Among these, two species are reported as new for Tunisia. Furthermore, this study indicates that isopods are not evenly distributed in the various biotopes: they vary in number of species as well as in number of specimens. Biotope 2 shows the highest diversity and is the most homogeneous (Is = 3.16; H = 1.76; J = 0.88), while biotope 4 exhibits the lowest values (Is = 1.2; H = 0.475; J = 0.3). The similarity between the various communities, estimated by the Bray-Curtis index, shows that the biotopes cluster according to their plant associations. RÉSUMÉJusqu'à présent aucune investigation relative à la diversité des isopodes terrestres n'a été réalisée en Tunisie. Dans le cadre du projet «MEDCORE», une étude sur la diversité des isopodes terrestres dans le bassin versant de Berkoukech, localisé au Nord-Ouest de la Tunisie, a été effectuée. On a échantillonnée une zone littorale ainsi qu'une zone plus intérieure, cette derniére localisée á Rabouet Bou Ali.Pour ceci quatre habitats (biotopes) ont été sélectionnés. Dans la zone littorale, la diversité des isopodes terrestres a été étudiée dans trois biotopes différents: une prairie dégradée (biotope 3 )

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Genetic and morphological analysis of Tunisian populations ofPorcellio variabilisLucas (Crustacea, Isopoda, Oniscidea)

Abstract: Specimens of Porcellio variabilis coming from Tunisian populations were genetically and morphologically examined.

Cited by 12 publications

References 9 publications

Reproductive traits of Porcellio variabilis Lucas, 1946 (Isopoda, Oniscidea) from Tunisia

Reproductive traits of Porcellio variabilis Lucas, 1946 (Isopoda, Oniscidea) from Tunisia

A fast GNU method to draw accurate scientific illustrations for taxonomy

The diversity of terrestrial Isopoda in the Berkoukech area, Kroumirie, Tunisia

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