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Cadra cautella (Walker) (Lepidoptera: Pyralidae) is a pest in barn, and its eggs are often utilized as an alternative prey or as hosts for mass production of insect predators and parasitoids. To aid in developing a mass-rearing system for C. castella, the suitability of using an artificial diet based on brown rice flour and whole brown rice was compared using the age-stage, 2-sex life table. Compared with those reared on brown rice, the insects reared on an artificial diet had a shorter preadult period (32.08 vs 37.38 d), higher fecundity (468.14 vs 356.20 eggs/female), greater intrinsic rate of increase (0.1509 vs 0.1145 d–1), and higher net reproductive rate (199.28 vs 103.52 offspring). Small populations were required to rear the moth on an artificial diet to achieve the same daily production of C. cautella. Still, the food expense was only 60.2% of that of C. cautella reared on brown rice. Approximately 99.44% of the eggs in each rearing procedure could be supplied as alternative prey for predators, with the remainder served to maintain the colonies for subsequent batches. Only eggs laid within 6 d would be utilized to ensure the high quality of alternative prey for the mass production of predacious bugs. Additionally, a multifunctional device was designed for moth rearing and egg collection, reducing labor input and minimizing health risks for workers coping with inhaled scales. To encourage the production of natural enemies, a cost-effective diet for maintaining a sustainable colony, and a system for daily egg-harvesting of alternative prey were proposed.

Bactrocera latifrons (Hendel) is a serious pest requiring quarantine in many countries worldwide. It has caused huge economic losses to the cultivation of solanaceous plants, such as peppers and eggplants. In this study, we constructed an age-stage, two-sex life table using eggplant as the host to clarify the occurrence and damage patterns of B. latifrons on this crop for better field prevention and control in the laboratory. The results showed that the egg, larval, and pupal stages lasted 4.3, 11.3, and 9.3 days, respectively. The average lifespan of adult females and males was 101 and 102 days, respectively. The egg hatching rate, larval survival rate, and pupal emergence rate were 96%, 88%, and 84%, respectively. The average generation time was 43.96 days, with an intrinsic rate of increase of 0.097 d−1 and a net reproductive rate of 73.4. We established the life table based on group rearing. The research findings provide essential data for rearing B. latifrons in the laboratory, offer a reference for the dynamic prediction of field population dynamics, and offer a theoretical foundation for developing pest control strategies for B. latifrons.

The aim of this study was to determine whether behaviour problems in indoor cats depend on the number of cats in a household or rearing one or more cats in a household together with a dog. The study was carried out on animals which were divided for the purpose of this study into 4 groups: (1) households with one cat; (2) households with two cats; (3) households with three or more cats; (4) households with one or more cats and a dog. Altogether 91 cats were included in the study. The practical part of this investigation was based on a questionnaire. It was observed that the probability of behaviour problems was not related unambiguously to the number of cats in a household or the company of a dog. The percentage of the occurrence of changed behaviour did not differ significantly between the groups.

The influence of solitary versus group rearing on the development and survival of the three-striped ladybird beetle Brumoides suturalis (Fabricius) was studied using two aphid species, Acyrthosiphon pisum (Harris) and Aphis gossypii Glover, as diet. Rearing pattern (solitary or group) had no significant influence on the success of rearing, but prey species did. While immature stages developed faster on A. pisum, the survival of early instars was higher on A. gossypii. Diet had no effect on pupal survival.

This book is the first comprehensive history of the development of child study during the early part of the twentieth century. Most nineteenth-century scientists deemed children unsuitable subjects for study, and parents were hostile to the idea. But by 1935, the study of the child was a thriving scientific and professional field. Here, Alice Boardman Smuts shows how interrelated movements-social and scientific-combined to transform the study of the child. Drawing on nationwide archives and extensive interviews with child study pioneers, Smuts recounts the role of social reformers, philanthropists, and progressive scientists who established new institutions with new ways of studying children. Part history of science and part social history, this book describes a fascinating era when the normal child was studied for the first time, a child guidance movement emerged, and the newly created federal Children's Bureau conducted pathbreaking sociological studies of children.

In the current decade, the U.S. population reached historically high levels of ethnic-racial diversity and reelected the nation's first Black-White biracial President. Simultaneously, scholars also documented significant ethnic-racial inequities in education, increased xenophobia, and a racial climate that revealed deep-seated ethnic-racial tensions. Given this backdrop and acknowledging the significant role that families play in youths' abilities to navigate their social contexts, the current review focused on the literature on families' ethnic-racial socialization efforts with youth from the 2010 decade. Our review of 259 empirical articles revealed that there has been an exponential increase in research on family ethnic-racial socialization in this decade. Furthermore, although it is clear that family ethnic-racial socialization is a robust predictor of youths' adjustment, the associations between socialization and adjustment must be considered with attention to specific socialization strategies, the confluence of strategies used, and the unique contexts within which families' lives are embedded.

This study examined whether the longitudinal links between mothers' use of spanking and children's externalizing behaviors are moderated by family race/ethnicity, as would be predicted by cultural normativeness theory, once mean differences in frequency of use are controlled. A nationally representative sample of White, Black, Hispanic, and Asian American families (n = 11,044) was used to test a cross-lagged path model from 5 to 8 years old. While race/ethnic differences were observed in the frequency of spanking, no differences were found in the associations of spanking and externalizing over time: Early spanking predicted increases in children's externalizing while early child externalizing elicited more spanking over time across all race/ethnic groups.

Amid growing controversy about the oft-cited \"30-million-word gap,\" this investigation uses language data from five American communities across the socioeconomic spectrum to test, for the first time, Hart and Risley's (1995) claim that poor children hear 30 million fewer words than their middle-class counterparts during the early years of life. The five studies combined ethnographic fieldwork with longitudinal home observations of 42 children (18-48 months) interacting with family members in everyday life contexts. Results do not support Hart and Risley's claim, reveal substantial variation in vocabulary environments within each socioeconomic stratum, and suggest that definitions of verbal environments that exclude multiple caregivers and bystander talk disproportionately underestimate the number of words to which low-income children are exposed.

Prior research highlights how mothers across social classes express similar beliefs that good parenting adheres to the tenets of intensive mothering by being child-centered, time-consuming, and self-sacrificing. Yet intensive mothering ideologies emphasize parenting tactics that assume children’s basic needs are met, while ignoring how mothers in poverty devise distinctive childrearing strategies and logics to perform carework demanded by deprivation, discrimination, and a meager social safety net. I theorize inventive mothering that instead highlights the complexity and agency of poor mothers’ innovative efforts to ensure children’s access to resources, protect children from the harms of poverty and racism, and present themselves as fit parents in the context of intersecting gender, class, and race stigma. Drawing on in-depth interviews with 70 mothers who experienced diaper need, I conceptualize diaper work as a case of inventive mothering that involves extensive physical, cognitive, and emotional labor. These findings show how focusing on childrearing practices experienced as “intense” from the point of view of more affluent, white mothers perpetuates inequalities by obscuring the complex labor poor mothers, especially poor mothers of color, perform when there is limited public support for fundamental aspects of childcare.

The persistence of elevated subtypes of aggression beginning in childhood have been associated with long-term maladaptive outcomes. Yet it remains unclear to what extent there are clusters of individuals following similar developmental trajectories across forms (i.e., physical and indirect) and functions (i.e., proactive and reactive) of aggression. We aimed to identify groups of children with distinct profiles of the joint development of forms and functions of aggression and to identify risk factors for group membership. A sample of 787 children was followed from birth to adolescence. Parent and teacher reports, and standardised assessments were used to measure two forms and two functions of aggressive behaviour, between six and 13 years of age along with preceding child, maternal, and family-level risk-factors. Analyses were conducted using a group-based multi-trajectory modelling approach. Five trajectory groups emerged: non-aggressors, low-stable, moderate-engagers, high-desisting, and high-chronic. Coercive parenting increased membership risk in the moderate-engagers and high-chronic groups. Lower maternal IQ increased membership risk in both high-desisting and high-chronic groups, whereas maternal depression increased membership risk in the high-desisting group only. Never being breastfed increased membership risk in the moderate-engagers group. Boys were at greater risk for belonging to groups displaying elevated aggression. Individuals with chronic aggression problems use all subtypes of aggression. Risk factors suggest that prevention programs should start early in life and target mothers with lower IQ. Strategies to deal with maternal depression and enhance positive parenting while replacing coercive parenting tactics should be highlighted in programming efforts.