The hand of man first then Santa Rosalia’s blessing: a critical examination of the supposed criticism by Samraoui (2017)

Khelifa, Rassim; Zebsa, Rabah; Amari, Hichem; Mellal, Mohammed Khalil; Zouaimia, Abdelheq; Bensouilah, Soufyane; Laouar, Abdeldjalil; Houhamdi, Moussa

doi:10.1007/s10841-018-0045-0

Cited by 6 publications

(7 citation statements)

References 49 publications

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“…The El Graeate pond is 15 times larger than Lake Bleu, which suggests that the local community composition is different (Doi et al, 2009). In addition, the El Graeate site is also thought to host a larger population of U. edwardsii (Khelifa et al, 2018), suggesting distinct intraspecific competition. EM50 of U. edwardsii was quite different than those estimated for other Libellulidae studied in Northeast-Algeria, namely Sympetrum meridionale (Selys, 1841) (16 days) (Hadjadji et al, 2019), the Afrotropical Acisoma inflatum (25 days) (Baaloudj, 2020), and Orthetrum cancellatum (Linnaeus, 1758) (20 days) (Hadjoudj et al, 2014).…”

Section: Discussionmentioning

confidence: 99%

“…Prior to the start of the emergence season, we performed weekly visits to the site in May to determine whether the emergence/flight season had started. We selected the southern part of the wetland which was previously shown to host the emerging population (Khelifa et al, 2018). We chose a 15 × 2 m 2 stretch that was carefully checked for exuviae at each visit.…”

Section: Sampling Protocol Of Exuviaementioning

confidence: 99%

“…Urothemis edwardsii, in particular, is restricted to the northeast of Algeria. A decade ago, the distribution of the species was limited to a single location, but more recently, the species was recorded in different locations locally (Khelifa et al, 2016(Khelifa et al, , 2018. Although some aspects of the behaviour and ecology of U. edwardsii have been studied (Khelifa et al, 2013a,b), studies on its emergence are still very limited (Baaloudj, 2019).…”

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confidence: 99%

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Phenology of the regionally Critically Endangered dragonfly Urothemis edwardsii in the National Park of El Kala, Northeast of Algeria

Zouaimia¹,

Adjami²,

Zebsa³

et al. 2022

Nat. Conserv. Res.

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In the Mediterranean, Urothemis edwardsii is one of the most threatened dragonfly species with a relict population restricted to the northeast of Algeria. Despite the recent subtle local expansion in the geographic distribution of the species during the past decade, studies on the life history of the species are still lacking. We carried out a study on the phenology of emergence and flight season on Lake Bleu, Northeast-Algeria. Using repeated sampling of exuviae and marking of adults during two seasons (2018 and 2019), we estimated the population size, sex ratio, and the temporal pattern of emergence and flight season. The first year (2018) was considerably drier than the second year (2019). We collected a total of 576 and 887 exuviae and 711 and 655 adults in 2018 and 2019, respectively. The sex ratio at emergence was slightly female-biased with 57.1% in the first year and equal to unity (50.5%) in the second year, respectively. The species started its emergence earlier in the dry year (2018). The emergence of the species was quite asynchronous where 50% of the population emerged after 11 days and 16 days in 2018 and 2019, respectively. The difference in population size (based on exuviae) and the temporal pattern of emergence and flight season were likely due to differences in weather between the two years. The current study provides useful information on the life history and plasticity of U. edwardsii, which could be used for the management of this locally Critically Endangered dragonfly.

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Section: Discussionmentioning

confidence: 99%

Section: Sampling Protocol Of Exuviaementioning

confidence: 99%

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confidence: 99%

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Phenology of the regionally Critically Endangered dragonfly Urothemis edwardsii in the National Park of El Kala, Northeast of Algeria

Zouaimia¹,

Adjami²,

Zebsa³

et al. 2022

Nat. Conserv. Res.

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“…Thus when the support is long, it is risky to be at higher strata because of the potential detection by predators and being blown away by wind, so larger larvae occupy relatively low heights. However, when support is short and thus stable, it is better to stay in higher positions to avoid terrestrial predators (Mellal, Zebsa et al 2018). These hypotheses should be tested with experiments, which manipulate abiotic and biotic characteristics of the microhabitat to pinpoint the main factors that influence vertical stratification of odonates.…”

Section: Discussionmentioning

confidence: 99%

“…Thus, odonates have developed antipredatory strategies as to where and when to emerge in order to reduce the likelihood of predation, and intraspecific competition for the best microhabitat might happen. In addition, the left-over material of emergence, exuvia, is used as a conservation tool to indirectly assess the distribution of species, taxonomy, ecology, and behavioral plasticity (Raebel et al 2010;Foster and Soluk 2004;Khelifa 2012;Khelifa et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Emergence ecology and body size dimorphism in Sympetrum fonscolombii and S. meridionale (Odonata: Libellulidae)

Hadjadji¹,

Amari²,

Bouiedda³

et al. 2019

Zoology and Ecology

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The study of dragonfly emergence provides insights into the understanding of their life history, ecology, and adaptation to abiotic and biotic factors. Here we investigate the emergence ecology and body size of two congeneric dragonflies (Sympetrum fonscolombii Selys, and S. meridionale Selys) in Northeast Algeria, highlighting the seasonal pattern, sex ratio at emergence, sexual size dimorphism (SSD), and vertical stratification. We found that both species, S. fonscolombii in particular, showed quite asynchronous emergence. In both species, and especially in the larger S. meridionale, sex ratio was found to be female-biased, which is in line with the hypothesis of a negative relationship between SSD and sex ratio. There was no seasonal pattern of body size observed in both species. In S. meridionale, SSD with regard to both body and wing sheath length was male-biased, while in S. fonscolombii, it was male-biased with regard to body length and female-biased with regard to wing length. Vertical stratification depended on support height (the higher the support, the higher the height of exuvia fixation) but had a complex relationship with the body size. The biological significance and implications of the vertical stratification-body size relationship are discussed.

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Aspects of life history of the Afrotropical endangered Acisoma inflatum (Selys, 1889) (Odonata: Libellulidae) in Northeast Algeria

Baaloudj

2020

Annales de la Société entomologique de France (N.S.)

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The hand of man first then Santa Rosalia’s blessing: a critical examination of the supposed criticism by Samraoui (2017)

Cited by 6 publications

References 49 publications

Phenology of the regionally Critically Endangered dragonfly Urothemis edwardsii in the National Park of El Kala, Northeast of Algeria

Phenology of the regionally Critically Endangered dragonfly Urothemis edwardsii in the National Park of El Kala, Northeast of Algeria

Emergence ecology and body size dimorphism in Sympetrum fonscolombii and S. meridionale (Odonata: Libellulidae)

Aspects of life history of the Afrotropical endangered Acisoma inflatum (Selys, 1889) (Odonata: Libellulidae) in Northeast Algeria

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