scholarly journals Evidence for high inter-generational individual quality in yellow-eyed penguins

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e2935 ◽  
Author(s):  
Aviva M. Stein ◽  
Melanie J. Young ◽  
John T. Darby ◽  
Philip J. Seddon ◽  
Yolanda van Heezik
Keyword(s):  
First Generation ◽  
Second Generation ◽  
Lifetime Reproductive Success ◽  
Breeding Performance ◽  
High Performing ◽  
The Face ◽  
Age At First Breeding ◽  
Endangered Population ◽  
Successive Generations ◽  
Generation Offspring

Longitudinal studies focusing on lifetime reproductive success (LRS) have been used to measure individual breeding performance and identify commonalities among successful breeders. By extending the focus to subsequent generations we identify a proportion of high-quality individuals that contribute disproportionately to the population over multiple generations. We used 23 years of yellow-eyed penguin (Megadyptes antipodes) breeding data from one breeding area to identify the proportion of individual birds that raised successful breeders, which in turn raised offspring. We explored which life-history components influenced LRS, as this knowledge would enable conservation resources to be focused on high-performing individuals in this endangered population. From 2,147 birds marked as chicks, 370 (17.2%) survived to adulthood and recruited to their natal location, of which 219 (10.2%) fledged offspring: 124 (56.6%) of the 219 birds produced offspring that recruited as breeders. Only 102 birds (4.8% of 2,147) fledged first-generation offspring that in turn fledged offspring (second-generation offspring, or grand-offspring). We found that ∼25% of the birds that survived to breed had above-average LRS as well as above-average numbers of grand-offspring, and were more likely to have produced first-generation chicks that recruited and also produced above-average numbers of second-generation chicks. Our findings suggest that there is a core of “super-breeders” that contribute disproportionately to the population over successive generations. Lifespan and age-at-first-breeding were correlated with LRS. We suggest that traits of birds relating to longevity, health (e.g., immunocompetence) and fitness could be examined to identify potential links with high LRS and inter-generational fecundity. “Super-breeders” appear to consistently achieve high LRS and long lifespans in a stochastic environment, demonstrating greater resilience in the face of extreme events.

scholarly journals Evidence for high inter-generational individual quality in yellow-eyed penguins

2016 ◽  
Author(s):  
Aviva M Stein ◽  
Melanie J. Young ◽  
John Darby ◽  
Philip John Seddon ◽  
Yolanda van Heezik
Keyword(s):  
Reproductive Success ◽  
First Generation ◽  
Second Generation ◽  
Lifetime Reproductive Success ◽  
High Performing ◽  
The Face ◽  
Age At First Breeding ◽  
Endangered Population ◽  
Successive Generations ◽  
Generation Offspring

Longitudinal studies focusing on lifetime reproductive success (LRS) have been used to measure individual breeding performance and identify commonalities among successful breeders. By extending the focus to subsequent generations we identify a proportion of high-quality individuals that contribute disproportionately to the population over multiple generations. We used 23 years of yellow-eyed penguin (Megadyptes antipodes) breeding data from one breeding area to identify the proportion of individual birds that raised successful breeders, which in turn raised offspring that bred successfully. We explored which life-history components influenced lifetime reproductive success, as this knowledge would enable conservation resources to be focused on high-performing individuals in this endangered population. From 2147 birds marked as chicks, 370 (17.2%) survived to adulthood and recruited to their natal location, of which 219 (10.2%) fledged offspring: 124 (56.6%) of the 219 birds produced offspring that recruited as breeders. Only 102 birds (4.8% of 2147) fledged first-generation offspring that in turn fledged offspring (second-generation offspring, or grand-offspring). We found that c. 26% of the birds that survived to breed had above-average LRS as well as above-average numbers of grand-offspring, and were more likely to have produced first-generation chicks that recruited and also produced above-average numbers of second-generation chicks. Our findings suggest that there is a core of “super-breeders” that contribute disproportionately to the population over successive generations. Lifespan and age-at-first-breeding were correlated with LRS. We suggest that traits of birds relating to longevity, health (e.g. immunocompetence) and fitness could be examined to identify potential links with high LRS and inter-generational fecundity. “Super-breeders” appear to consistently balance high LRS with long- life-span in a stochastic environment, demonstrating greater resilience in the face of extreme events.

scholarly journals Evidence for high inter-generational individual quality in yellow-eyed penguins

2016 ◽  
Author(s):  
Aviva M Stein ◽  
Melanie J. Young ◽  
John Darby ◽  
Philip John Seddon ◽  
Yolanda van Heezik
Keyword(s):  
Reproductive Success ◽  
First Generation ◽  
Second Generation ◽  
Lifetime Reproductive Success ◽  
High Performing ◽  
The Face ◽  
Age At First Breeding ◽  
Endangered Population ◽  
Successive Generations ◽  
Generation Offspring

Longitudinal studies focusing on lifetime reproductive success (LRS) have been used to measure individual breeding performance and identify commonalities among successful breeders. By extending the focus to subsequent generations we identify a proportion of high-quality individuals that contribute disproportionately to the population over multiple generations. We used 23 years of yellow-eyed penguin (Megadyptes antipodes) breeding data from one breeding area to identify the proportion of individual birds that raised successful breeders, which in turn raised offspring that bred successfully. We explored which life-history components influenced lifetime reproductive success, as this knowledge would enable conservation resources to be focused on high-performing individuals in this endangered population. From 2147 birds marked as chicks, 370 (17.2%) survived to adulthood and recruited to their natal location, of which 219 (10.2%) fledged offspring: 124 (56.6%) of the 219 birds produced offspring that recruited as breeders. Only 102 birds (4.8% of 2147) fledged first-generation offspring that in turn fledged offspring (second-generation offspring, or grand-offspring). We found that c. 26% of the birds that survived to breed had above-average LRS as well as above-average numbers of grand-offspring, and were more likely to have produced first-generation chicks that recruited and also produced above-average numbers of second-generation chicks. Our findings suggest that there is a core of “super-breeders” that contribute disproportionately to the population over successive generations. Lifespan and age-at-first-breeding were correlated with LRS. We suggest that traits of birds relating to longevity, health (e.g. immunocompetence) and fitness could be examined to identify potential links with high LRS and inter-generational fecundity. “Super-breeders” appear to consistently balance high LRS with long- life-span in a stochastic environment, demonstrating greater resilience in the face of extreme events.

Muslims and the Crisis of British National Identity

2019 ◽  
pp. 221-243
Author(s):  
Martin Pugh
Keyword(s):  
National Identity ◽  
First Generation ◽  
Second Generation ◽  
Language Skills ◽  
Gradual Process ◽  
The World ◽  
The Face ◽  
British Muslims ◽  
Secular Society ◽  
Mainstream Society

This chapter demonstrates how, despite their experience of prejudice, Muslims became involved in a gradual process of integration into mainstream society; in this period they largely thought of themselves as ‘black’ or as Asians, rather than as Muslims. First-generation British Muslims had been fairly relaxed about social behaviour and religious observation. Meanwhile, the second generation of Muslims were not in Britain as temporary economic migrants, and consequently were less passive than their predecessors, more confident and aware of their opportunities and rights in Britain. For them, integration into mainstream society went hand in hand with an increasing assertiveness in the face of prejudice and an awareness of their identity as Anglo-Asians. By the 1980s and 1990s, the younger generation were becoming alienated from their parents due to familiarity with a secular society; many regarded the world of the mosque as boring. Muslims also began to reflect mainstream practice in other ways: more women in their twenties remained unmarried and, with their better language skills and qualifications, they were more likely to be in paid employment.

Reassessing the Generational Disparity in Immigrant Offending: A Within-family Comparison of Involvement in Crime

2019 ◽  
Vol 56 (6) ◽  
pp. 851-887 ◽  
Author(s):  
Bianca E. Bersani ◽  
Adam W. Pittman
Keyword(s):  
First Generation ◽  
Second Generation ◽  
Well Being ◽  
Foreign Born ◽  
Data Set ◽  
The Difference ◽  
Successive Generations ◽  
Offending Patterns ◽  
High Degree ◽  
Parent Child

Objective:This study reassesses the generational disparity in immigrant offending. Patterns and predictors of offending are compared using traditional peer-based models and an alternative within-family (parent–child dyad) model.Method:The National Longitudinal Survey of Youth (1979; NLSY79) and NLSY-Child and Young Adult (NLSY_CYA) data are merged to create an intergenerational data set to compare generational disparities in immigrant offending across peers and within families. Differences in self-reported offending (prevalence and variety) by immigrant generation are assessed using a combination of descriptive analyses (χ2and analysis of variance) and regression models.Results:While NLSY_CYA children generally are at a greater risk of offending compared with the NLSY79 mothers, the difference in offending is greatest between first-generation mom and second-generation child dyads. Disparities in offending are driven in large part by exceedingly low levels of offending among first-generation immigrants.Conclusion:Although the factors driving an increase in offending between parent–child generations are not unique to immigrants, they are amplified in immigrant families. Whereas the second generation is remarkably similar to their U.S.-born counterparts in terms of their involvement in crime, suggesting a high degree of swift integration, the greater involvement in crime among the children of immigrants compared to their foreign-born mothers suggests a decline in well-being across successive generations.

scholarly journals Programmed aortic dysfunction and reduced Na+,K+-ATPase activity present in first generation offspring of lard-fed rats does not persist to the second generation

2007 ◽  
Vol 92 (3) ◽  
pp. 583-589 ◽  
Author(s):  
James A. Armitage ◽  
Asuka Ishibashi ◽  
Aswini A. Balachandran ◽  
Runa I. Jensen ◽  
Lucilla Poston ◽  
...  
Keyword(s):  
Atpase Activity ◽  
First Generation ◽  
Second Generation ◽  
Generation Offspring

Medication and aggressiveness in real-world schizophrenia. Results from the FACE-SZ dataset

2015 ◽  
Vol 30 (S2) ◽  
pp. S153-S154
Author(s):  
M. Favez ◽  
G. Fond ◽  
L. Boyer ◽  
P.M. Llorca ◽  
A. Pelissolo
Keyword(s):  
First Generation ◽  
Second Generation ◽  
Primary Objective ◽  
Mood Stabilizers ◽  
Significant Difference ◽  
Cannabis Consumption ◽  
The Face ◽  
Aggression Questionnaire ◽  
Axis I ◽  
Long Acting

The primary objective of this study was to determine if second generation antipsychotic (SGA) administration was associated with lower aggressiveness scores compared to first generation (FGA). The secondary objective was to determine if antidepressants, mood stabilizers and benzodiazepines administration were respectively associated with lower aggressiveness scores compared to patients who were not administered these medications. 331 patients with schizophrenia (n = 255) or schizoaffective disorder (n = 76) (mean age = 32.5 years, 75.5 % male gender) were systematically included in the network of FondaMental Expert Center for Schizophrenia and assessed with the Structured Clinical Interview for DSM-IV Axis I Disorders and validated scales for psychotic symptomatology, insight and compliance. Aggressiveness was measured by the Buss-Perry Aggression Questionnaire (BPAQ) score. Ongoing psychotropic treatment was recorded. Patients who received SGA had lower BPAQ scores than patients who did not (p = 0.01). More specifically, these patients had lower physical and verbal aggression scores. On the contrary, patients who received benzodiazepines had higher BPAQ scores than patients who did not (p = 0.04). No significant difference was found between BPAQ scores of patients respectively being administered mood stabilizers (including valproate), antidepressant, and the patients who were not. These results were found independently of socio-demographical variables, psychotic symptomatology, insight, compliance into treatment, daily-administered antipsychotic dose, the way of antipsychotic administration (oral vs long acting), current alcohol disorder and daily cannabis consumption. The results of the present study are in favor of a superior efficacy of second-generation antipsychotics in aggressiveness in patients with schizophrenia, but these results need further investigation in longitudinal studies. Given the potent side effects of benzodiazepines (especially dependency and cognitive impairment) and the results of the present study, their long-term prescription is not recommended in patients with schizophrenia and aggressive behavior.

scholarly journals Inter-generational transmission in a minority language setting: Stop consonant production by Bangladeshi heritage children and adults

2016 ◽  
Vol 22 (3) ◽  
pp. 255-284 ◽  
Author(s):  
Robert Mayr ◽  
Aysha Siddika
Keyword(s):  
Heritage Language ◽  
First Generation ◽  
Second Generation ◽  
Voice Onset Time ◽  
Onset Time ◽  
Stop Consonant ◽  
Speech Development ◽  
Third Generation ◽  
Term Survival ◽  
Successive Generations

Aims and objectives: The purpose of this study was to gain a better understanding of speech development across successive generations of heritage language users, examining how cross-linguistic, developmental and socio-cultural factors affect stop consonant production. Design: To this end, we recorded Sylheti and English stop productions of two sets of Bangladeshi heritage families: (1) first-generation adult migrants from Bangladesh and their (second-generation) UK-born children, and (2) second-generation UK-born adult heritage language users and their (third-generation) UK-born children. Data and analysis: The data were analysed auditorily, using whole-word transcription, and acoustically, examining voice onset time. Comparisons were then made in both languages across the four groups of participants, and cross-linguistically. Findings: The results revealed non-native productions of English stops by the first-generation migrants but largely target-like patterns by the remaining sets of participants. The Sylheti stops exhibited incremental changes across successive generations of speakers, with the third-generation children’s productions showing the greatest influence from English. Originality: This is one of few studies to examine both the host and heritage language in an ethnic minority setting, and the first to demonstrate substantial differences in heritage language accent between age-matched second- and third-generation children. The study shows that current theories of bilingual speech learning do not go far enough in explaining how speech develops in heritage language settings. Implications: These findings have important implications for the maintenance, transmission and long-term survival of heritage languages, and show that investigations need to go beyond second-generation speakers, in particular in communities that do not see a steady influx of new migrants.

Development of Paramphistomum sukari Dinnik, 1954 (Trematoda: Paramphistomidae) in a snail host

Parasitology ◽  
1957 ◽  
Vol 47 (1-2) ◽  
pp. 209-216 ◽  
Author(s):  
J. A. Dinnik ◽  
N. N. Dinnik
Keyword(s):  
Intermediate Host ◽  
First Generation ◽  
Second Generation ◽  
Infected Snail ◽  
Snail Host ◽  
Second Phase ◽  
Long Time ◽  
Two Phases ◽  
Successive Generations ◽  
First And Second Generation

The development of Paramphistomum sukari Dinnik in a snail host is described with the emphasis laid on the succession of redial generation.The sporocyst gives birth to about twenty to thirty rediae. These rediae of the first generation commence with the production of daughter rediae then enter the second phase of their productivity during which they produce cercariae. The daughter rediae, or the rediae of the second generation, repeat these two phases during their lives, commencing with redial production and after that changing to the production to cercariae. Both the first- and second-generation rediae are able to produce a few daughter rediae at the end of their life. There is evidence that the subsequent generations of rediae are also able to give birth to daughter rediae and cercariae.As a result the successive generations of rediae maintain the infection in an intermediate host for a long time, probably as long as the infected snail can survive.

scholarly journals Effects of Gestational Diabetes in Cognitive Behavior, Oxidative Stress and Metabolism on the Second-Generation Off-Spring of Rats

Nutrients ◽  
2021 ◽  
Vol 13 (5) ◽  
pp. 1575
Author(s):  
Maribel Huerta-Cervantes ◽  
Donovan J. Peña-Montes ◽  
Miguel Ángel López-Vázquez ◽  
Rocío Montoya-Pérez ◽  
Christian Cortés-Rojo ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Working Memory ◽  
Cerebral Cortex ◽  
Gestational Diabetes ◽  
First Generation ◽  
Second Generation ◽  
Spatial Working Memory ◽  
Negative Impact ◽  
Cognitive Behavior ◽  
Generation Offspring

Gestational diabetes (GD) has a negative impact on neurodevelopment, resulting in cognitive and neurological deficiencies. Oxidative stress (OS) has been reported in the brain of the first-generation offspring of GD rats. OS has been strongly associated with neurodegenerative diseases. In this work, we determined the effect of GD on the cognitive behavior, oxidative stress and metabolism of second-generation offspring. GD was induced with streptozotocin (STZ) in pregnant rats to obtain first-generation offspring (F1), next female F1 rats were mated with control males to obtain second-generation offspring (F2). Two and six-month-old F2 males and females were employed. Anxious-type behavior, spatial learning and spatial working memory were evaluated. In cerebral cortex and hippocampus, the oxidative stress and serum biochemical parameters were measured. Male F2 GD offspring presented the highest level of anxiety-type behavior, whilst females had the lowest level of anxiety-type behavior at juvenile age. In short-term memory, adult females presented deficiencies. The offspring F2 GD females presented modifications in oxidative stress biomarkers in the cerebral cortex as lipid-peroxidation, oxidized glutathione and catalase activity. We also observed metabolic disturbances, particularly in the lipid and insulin levels of male and female F2 GD offspring. Our results suggest a transgenerational effect of GD on metabolism, anxiety-like behavior, and spatial working memory.

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