scholarly journals Divergence in Life History Traits between Two Populations of a Seed-Dimorphic Halophyte in Response to Soil Salinity

2017 ◽  
Vol 8 ◽  
Author(s):  
Fan Yang ◽  
Jerry M. Baskin ◽  
Carol C. Baskin ◽  
Xuejun Yang ◽  
Dechang Cao ◽  
...  
Keyword(s):  
Life History ◽  
Soil Salinity ◽  
Life History Traits ◽  
Two Populations

Divergent patterns of impact of environmental conditions on life history traits in two populations of a long-distance migratory bird

Oecologia ◽  
2009 ◽  
Vol 159 (4) ◽  
pp. 859-872 ◽  
Author(s):  
Javier Balbontín ◽  
Anders P. Møller ◽  
Ignacio G. Hermosell ◽  
Alfonso Marzal ◽  
Maribel Reviriego ◽  
...  
Keyword(s):  
Life History ◽  
Environmental Conditions ◽  
Life History Traits ◽  
Migratory Bird ◽  
Long Distance ◽  
Two Populations

scholarly journals Phenotypic Plasticity and Parental Effect on Rearing of Two Diverse Habitat Environment for Laboratory Reared Sympetrum Meridionale

2021 ◽  
Vol 8 (2) ◽  
pp. 120-130
Author(s):  
Imane Halassi ◽  
Ali Elafri ◽  
Ismahan Halassi ◽  
Hichem Amari ◽  
Moussa Houhamdi
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Environmental Changes ◽  
Temporary Pond ◽  
Parental Effect ◽  
North Eastern ◽  
Ramsar Wetland ◽  
Eastern Algeria ◽  
Two Populations

Laboratory observations on rearing experiment of Odonata serve to answer many evolutionary and ecological questions. In order to evidences the role of species parental habitat provenience in the development behaviour of their offspring, we surveyed several life history traits of two rearing populations of Sympetrum meridionale (Anisoptera: Sympetrinae), coming from two different habitats across north-eastern Algeria. The first one is a RAMSAR wetland called ‘Mekhada’ (a perennial water body), and the second one is a temporary pond located at “Maouna” Mountain (1400 m altitude). Overall, the development patterns of the two populations of dragonflies vary with the type of habitat the parental generation of the species occupy (Factorial ANCOVA: all p < 0.05). Firstly, egg mortality was very low in dragonfly population inhabiting the RAMSAR wetland compared of those belonging to Maouna Mountain. Secondly new-borne larvae stemming from females inhabiting the Mekhada wetland develop more slowly than did those coming from the “Maouna” Mountain pond. Finally, larvae of Sympetrum meridionale stemming from females inhabiting the temporary wetland were heavier than those inhabiting the perennial wetland. Such studies will ads considerably to our understanding of the mechanisms that are responsible for possible effects of environmental changes on life history traits of dragonflies across the southern part of their distribution range.

scholarly journals Evolution of life-history traits and mating strategy in males: a case study on two populations of aDrosophilaparasitoid

2015 ◽  
Vol 117 (2) ◽  
pp. 231-240 ◽  
Author(s):  
Joan van Baaren ◽  
Claire M.-S. Dufour ◽  
Jean-Sébastien Pierre ◽  
Véronique Martel ◽  
Philippe Louâpre
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Mating Strategy ◽  
Evolution Of Life ◽  
Two Populations

Life history traits of Aedes caspius (Diptera: Culicidae): a laboratory study of larval stages

2008 ◽  
Vol 98 (5) ◽  
pp. 431-436 ◽  
Author(s):  
A. Carron ◽  
L. Bichaud ◽  
N. Platz ◽  
D.J. Bicout
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Larval Density ◽  
Survival Rates ◽  
Control Program ◽  
Larval Survival ◽  
Fourth Instar ◽  
Aedes Caspius ◽  
Development Times ◽  
Two Populations

AbstractThe larval survival and development times of Aedes caspius (Diptera: Culicidae) were examined in the laboratory. These life history traits were estimated using life tables constructed for two populations, one of which had been subjected to a long-term larvicide control program. Traits were evaluated for eight different population densities. The effects of population, larval stage and larval density were investigated using a general linear model. Density was positively correlated with larval survival but did not affect development time. The fourth instar and pupae had the lowest larval survival rates. First and fourth instar larvae had the longest development times. These traits were not significantly different between the two populations. The effect of larvicide control on these traits is discussed.

Inheritance of key life-history traits in crosses between northern and southern populations of the cabbage beetle Colaphellus bowringi (Coleoptera: Chrysomelidae)

2021 ◽  
pp. 1-9
Author(s):  
Hai-Min He ◽  
Jian-Jun Tang ◽  
Li-Li Huang ◽  
Shao-Hui Wu ◽  
Yuan Peng ◽  
...  
Keyword(s):  
Growth Rate ◽  
Weight Loss ◽  
Body Weight ◽  
Life History ◽  
Development Time ◽  
Life History Traits ◽  
Weight Growth ◽  
Almost All ◽  
Two Populations ◽  
Two Hybrid

Abstract A southern population (S) from Xiushui County (29°1′N, 114°4′E) and a northern population (N) from Shenyang city (41°48′N, 123°23′E) of the cabbage beetle, Colaphellus bowringi vary greatly in their life-history traits, and may serve as an excellent model with which to study the inheritance of life-history traits. In the present study, we performed intraspecific hybridization using the two populations, comparing the key life-history traits (fecundity, development time, body weight, growth rate, and sexual size dimorphism (SDD)) between the two populations (S♀ × S♂ and N♀ × N♂) and their two hybrid populations (S♀ × N♂ and N♀ × S♂ populations) at 19, 22, 25, and 28°C. Our results showed that there were significant differences in life-history traits between the two parental populations, with the S population having a significantly higher fecundity, shorter larval development time, larger body weight, higher growth rate, and greater weight loss during metamorphosis than the N population at almost all temperatures. However, these life-history traits in the two hybrid populations were intermediate between those of their parents. The life-history traits in the S × N and N × S populations more closely resembled those of the maternal S population and N population, respectively, showing maternal effects. Weight loss for both sexes was highest in the S population, followed by the S × N, N × S, and N populations at all temperatures, suggesting that larger pupae lost more weight during metamorphosis. The changes in SSD with temperature were similar between the S and the S × N populations and between the N and the N × S populations, also suggesting a maternal effect. Overall, our results showed no drastic effect of hybridization on C. bowringi, being neither negative (hybrid inferiority) nor positive (heterosis). Rather, the phenotypes of hybrids were intermediate between the phenotypes of their parents.

Variation in Reproductive Life History Traits between Two Populations of Blackbanded Darters (Percina nigrofasciata)

Copeia ◽  
2012 ◽  
Vol 2012 (4) ◽  
pp. 714-721 ◽  
Author(s):  
Myra C. Hughey ◽  
David C. Heins ◽  
Howard L. Jelks ◽  
Bridget A. Ory ◽  
Frank Jordan
Keyword(s):  
Life History ◽  
Life History Traits ◽  
Reproductive Life ◽  
Two Populations ◽  
Reproductive Life History

Sexual dimorphism and age structure of the Montseny newt (Calotriton arnoldi)

2015 ◽  
Vol 36 (3) ◽  
pp. 245-252 ◽  
Author(s):  
Fèlix Amat ◽  
Neus Oromí ◽  
Delfí Sanuy ◽  
Salvador Carranza
Keyword(s):  
Life History ◽  
Sexual Dimorphism ◽  
Age Structure ◽  
Sexual Maturity ◽  
Life History Traits ◽  
Geographic Scale ◽  
Total Body ◽  
Similar Body ◽  
Two Populations ◽  
Small Geographic Scale

Patterns of sexual dimorphism and age structure were investigated in two populations of the newtCalotriton arnoldi, endemic of the Montseny Massif (NE of the Iberian Peninsula). In contrast to the Pyrenean newt (Calotriton asper) sexual dimorphism in the Montseny brook newt is characterized by slightly larger females (60.3 ± 0.3 mm; maximum: 68 mm) than males (59.5 ± 0.2 mm; maximum: 64 mm) and more similar body shape between sexes. Both populations and sexes mature at the same age (3 years), show the same age structure and achieve similar longevity (8-9 years). Comparing our results with the framework of the variation of life-history traits inCalotriton, the Montseny newts exhibit fast sexual maturity and short longevity. Curiously, we have found a lack of covariation between age at sexual maturity, longevity and total body size in the populations ofCalotritonspecies. Only in males, age at sexual maturity seems to be affected by altitude, but in an unexpected way: sexual maturation is delayed in populations at low altitudes. Moreover, the age at sexual maturity does not differs between the populations where immatures are terrestrial vs. those where they remain aquatic. Our results suggest that life-history traits inCalotritonnewts could be determined by selective factors that play their role at small geographic scale.

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