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Transposable elements are one of the major contributors to genome-size differences in metazoans. Despite this, relatively little is known about the evolutionary patterns of element expansions and the element families involved. Here we report a broad genomic sampling within the genus Hydra, a freshwater cnidarian at the focal point of diverse research in regeneration, symbiosis, biogeography, and aging. We find that the genome of Hydra is the result of an expansion event involving long interspersed nuclear elements and in particular a single family of the chicken repeat 1 (CR1) class. This expansion is unique to a subgroup of the genus Hydra, the brown hydras, and is absent in the green hydra, which has a repeat landscape similar to that of other cnidarians. These features of the genome make Hydra attractive for studies of transposon-driven genome expansions and speciation.

Executive Summary: The International Organization of Migration has characterized the US-Mexico border as the world's deadliest land migration route. By August 2024, a minimum of 5,405 persons had died or gone missing along this border since 2014, with record high numbers since 2021. Migrant deaths occur despite decades of: US Border Patrol search and rescue initiatives; public education campaigns targeting potential migrants on the dangers of irregular migration; dozens of academic publications and reports highlighting the root causes of these deaths; efforts by consular officials, local communities, and humanitarian agencies to locate, identify, and repatriate human remains; and desperate attempts by families to learn the fate of their missing loved ones. This paper introduces a special edition of the Journal on Migration and Human Security (JMHS), which draws on original research and the expertise of medical examiners, forensic anthropologists, social scientists, and humanitarian organizations to examine this persistent human tragedy. Many of the authors investigate migrant deaths in their professional capacities. They identify the dead, return remains to family members, and champion reforms to prevent deaths and better account for the dead and missing. This JMHS special edition represents a collaboration between the University of Arizona's Binational Migration Institute, the Center for Migration Studies of New York (CMSNY), and the Working Group on Mapping Migrant Deaths along the US Southwest Border. The Working Group includes scholars and practitioners from California, Arizona, New Mexico, Texas, and New York who have met monthly since October of 2021. The special edition examines in granular detail the causes of migrant deaths, US border enforcement strategies and tactics, migrant death statistics, and the resource and capacity challenges faced by US counties along and leading from the US-Mexico border in investigating these deaths. The US Department of Homeland Security (DHS) and many public officials attribute the deaths to the predations of human smugglers, the victims' ignorance or assumption of risk, and the harsh "natural" conditions to which migrants finally succumb. This special issue also documents the underlying non-natural causes of this enduring tragedy, and offers both overarching and more targeted solutions to preventing and minimizing migrant deaths. The issue builds upon and extends seminal research on migrant deaths first featured in CMSNY publications more than two decades ago. Section I introduces the issue of migrant deaths by posing the question: Why should we care? Section II describes the genesis of "prevention through deterrence"—a border enforcement theory and strategy—and its evolution through subsequent Customs and Border Protection (CBP) and US Border Patrol strategic plans. It describes the immense enforcement infrastructure built around this idea by successive administrations and Congresses, and it explains why it has failed to stem irregular migration and how it has contributed to migrant deaths. Section III reviews the main causes of migrant deaths—forced migration, the combined effects of prevention through deterrence and border enforcement tactics, the denial of access to asylum, the border wall, the "naturalization" of migrant deaths, and the dominant vision of the border as a site of danger and exclusion. Section IV reviews the legislative standards for identifying, investigating, and reporting on migrant decedents. It also details the deficiencies of Border Patrol and county-level sources of data on deaths, and it outlines ways to strengthen data collection. Section V discusses the burdens placed on communities along and leading from the border in investigating deaths and their need for greater resources and capacity to address this problem. Section VI outlines the anomalies and challenges related to the Border Patrol's migrant rescue program. Section VII describes international legal standards to guide the investigation of migrant deaths and two model programs. Section VIII sets forth policy recommendations to prevent migrant deaths and to honor and account for the dead. [ABSTRACT FROM AUTHOR]

Executive Summary: Immigration at the US-México border has drastically changed since the mid-2010s. Instead of adult undocumented Mexican men, generally migrating for economic purposes, there are now large numbers of men, women, unaccompanied minors, and families from diverse countries seeking asylum in the United States, as they are allowed to do under US and international law. In response to these changes, the US federal government leveraged multiple strategies to impede access to the country's asylum system, including relying on Title 42 "expulsions." Title 42, a COVID-19-era health measure, prevented migrants from initiating an asylum claim. Instead, asylum-seekers were typically immediately expelled to the closest port of entry in México. The use of public health as a pretext to control the border placed these migrants at risk and led many to attempt repeat border crossings. Given this policy context, we ask: what, if any, is the association between Title 42 expulsions and migrant deaths in southern Arizona? We address this question by drawing on records of recovered undocumented border crosser (UBC) remains investigated by the Pima County Office of the Medical Examiner (PCOME) in Tucson, Arizona. We examined differences in the number and demographic characteristics of UBC remains recovered between what prior studies have characterized as the "Localized Funnel Effect" Era of border enforcement in southern Arizona (i.e., October 1, 2013–March 19, 2020; N = 851), and the "Title 42" Era (i.e., March 20, 2021–September 30, 2023; N = 709). We also assessed how, if at all, the geography of recovered UBC remains shifted between these eras. We found that migrant deaths rose from an annual mean of 133 during the Localized Funnel Effect (LFE) Era to 198 in the Title 42 (T42) Era, representing a 48 percent increase. Compared to the earlier era, remains recovered during the T42 Era clustered closer to the border and near the cities of Nogales and Agua Prieta, Sonora, having shifted from west to east in southern Arizona. Additionally, we found that Title 42 disproportionately affected Mexican and Guatemalan nationals both in terms of expulsions as well as deaths. We propose several policy recommendations based on our study's findings intended to reduce unnecessary suffering and increase human security: • The US federal government should not impede or limit migrants' access to the asylum system. Policymakers should instead create clear pathways and procedures that obviate the need for migrants to undertake dangerous journeys and overcome barriers to fair consideration of their claims. • The US government must expand its ability to address these claims, as continued attempts to block asylum seekers will result in additional loss of life and increased violence. It should increase its capacity to screen asylum seekers at the US-México border. We propose an increase in USCIS Asylum Officers to carry out this duty. US Customs and Border Protection agents should not screen asylum seekers, nor should they assume the responsibility of serving as asylum officers, given the agency's extensively documented record of persistently dehumanizing and mistreating migrants. • The US federal government must take measures to eliminate the backlog of asylum cases in the immigration courts. These measures need to include reforms in the underlying immigration system and in the removal adjudication system, such as greater access to legal counsel and changes to the law that offer legal pathways to imperiled migrants who do not meet the narrow definition of asylum. Absent these reforms, the asylum case backlog will grow, and many asylum seekers with strong claims to remain will be removed after living for years in the United States. [ABSTRACT FROM AUTHOR]

Copyright of Boletín Geológico y Minero is the property of Instituto Tecnologico Geominero De Espana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

US public officials frequently argue that high temperatures are responsible for increasing mortality of undocumented border crossers (UBCs) in southern Arizona. In this article, we suggest that these kinds of assertions are not only empirically misleading, they also serve to naturalise UBC deaths in the region by helping to obscure their structural causes. Indeed, although heat exposure is a primary cause of death in the region, prior studies have also shown that migration patterns have shifted toward more remote and rugged terrain, characterised by higher elevations and greater shade cover. Using physiological modelling and a spatiotemporal forensic analysis, we assess whether the distribution of recovered human remains has shifted toward locations characterised by environments where the human body is more or less capable of regulating core temperature, and thus succumbing to heat stress. We find that the distribution of recovered UBC remains has consistently trended toward locations where the potential for heat stress is lower, rather than higher. This demonstrates that UBC mortality is not principally a function of ambient or regional temperature, but rather is a result of specific policy decisions that lead to cumulative stress and prolonged exposure due to factors like difficulty and distance of travel. To contextualise these findings, we discuss the evolution of the US Border Patrol's policy of Prevention Through Deterrence, and apply the concepts of structural and cultural violence to theorize its consistently deadly outcomes. [ABSTRACT FROM AUTHOR]

Latinos and Asian-Americans constitute the largest recent immigrant groups in the United States. Upon arrival, immigrants from these groups generally identify with their national origin despite being categorized as "Asian" or "Latino" for state enumeration. While both are racialized and excluded from mainstream identities, they differ in their internal linguistic and religious diversities, socioeconomic status, and immigration experiences. Sociologists theorized that Asian-American panethnicity is based on structural commonalities while Latino panethnicity is built upon cultural commonalities. We elaborate the theoretical understanding of contexts associated with this identification and find alternative underpinnings that shape both groups' panethnic identification. We find generation since immigration is a common basis for elevated likelihood of panethnic identification for both groups. However, among Asian-Americans, we find English proficiency and age increase people's odds of identifying with a panethnic identity over a national origin term, whereas for Latinos, political affiliation and religiosity increase these odds. [ABSTRACT FROM AUTHOR]

Objectives: We examine the prevalence and sociodemographic risk factors of skeletal indicators of stress in forensic samples of undocumented migrants from Mexico and Central America. Materials and methods: Cranial and dental remains of 319 migrants recovered in the Arizona and Texas borderlands were assessed for porotic hyperostosis (PH), cribra orbitalia (CO), and linear enamel hypoplasias (LEH). Logistic regression models for each condition were estimated to test for associations with biological sex, age, recovery location, and whether individuals were identified. Additional models estimated for a subsample of identified migrants included region of origin, residential context, and community indigeneity. Results: The full sample shows moderate crude prevalence of CO (9.6%) and LEH (34.1%), and a high prevalence of PH (49.6%). Significantly higher odds of PH are associated with being male (2.16 times higher), unidentified (1.89 times higher), and recovered in Arizona (3.76 times higher). Among identified migrants, we fail to find associations significant at the p < 0.05 level between skeletal stress and all sociodemographic variables except age. Discussion The factors associated with PH may be related to influences on decisions to migrate and diversity among migrant sending regions. The skeletal evidence for early life stress is generally consistent with common public health concerns among impoverished communities in the region. The lesions themselves are viewed as embodied risk of physiological disturbance when resource access is structured by higher‐level social, economic, and political forces. Forensic anthropologists would benefit from increased sensitivity to embodied structural violence among the vulnerable individuals and communities they serve. [ABSTRACT FROM AUTHOR]

Despite different origins, "Hispanic" and "Latino" are often used interchangeably to describe people with Latin American ancestry in the United States. Nevertheless, research consistently finds around half of U.S. Latinos/Hispanics prefer one term over the other. What factors explain these differences and account for no preference at all? Drawing on the 2013 National Survey of Latinos, we find college graduates, non-Mexicans, and first- and second-generation immigrants, and respondents in the western United States have higher relative odds of preferring "Latino" over "Hispanic." Those who identify racially as "Hispanic/Latino" also opt for "Latino," suggesting it is associated with racialization in the U.S. context. Conversely, gender, citizenship status, language use, and political affiliation do not explain specific panethnic label preference. We employ several theoretical approaches to provide insight on these findings, including (neo)colonization and internal colonialism, assimilation and racialization, and consciousness-raising. [ABSTRACT FROM AUTHOR]

Drawing on random surveys of over 1,100 recently repatriated unauthorized Mexican migrants (the Migrant Border Crossing Study), we examine the relationships between individual-level factors and unauthorized migrants' intended US destinations. We offer a novel approach for measuring a qualitatively distinct dimension of social ties relevant to the migration process: ties to family members with US citizenship. We find that social ties in respondents' intended destinations and familial connections to US citizens are both significantly associated with variations in destination intentions. Ultimately, our results reveal how characteristics of social ties can differentially pattern a migration-related outcome. [ABSTRACT FROM AUTHOR]

Research finds willingness to identify on panethnic terms is increasing among people of Latin American descent in the United States, as is the assertion of Latino-Hispanic panethnicity as a primary identity. The 2013 National Survey of Latinos found that one-fifth of respondents identified most often as "Hispanic/Latino" rather than with a "Hispanic origin term" or as "American". Drawing on these data, we examine the sociodemographic factors associated with primary panethnic identification (PPI). We find that Democratic Party affiliation and Mexican heritage increase the overall likelihood of PPI. Having less than a high school education, identifying racially as "Hispanic/Latino" or "other race", Spanish fluency, being a first-generation immigrant, and non-citizenship increase the likelihood of PPI over "American". These results suggest Latino-Hispanic panethnicity may represent a reactive identity associated with politicization, marginalization, and racialization. Many Latino-Hispanics in the United States are opting for a racialized primary panethnic identity over an "American" identity. [ABSTRACT FROM AUTHOR]

The mid-latitude coastal area at the western South-Atlantic out of the tropics is under the combined effect of different atmospheric circulation patterns at different temporal scales, which can be shown by the isotope composition of precipitation. This pattern effect is more changing and complex than that for the well-studied tropical areas, the isotope studies being an interesting proxy for identifying major processes. This study is focused on the isotope composition of precipitation at a mid-latitude zone, in the western South-Atlantic coastal area of Argentina. δ18O and d-excess were analysed in a data series of 14 years, obtained from the integration of three neighbouring rain collectors at 38°S. A seasonality is observed in both parameters, but with some differences in the extreme months. δ18O showed a seasonality according to the temperature effect, but with a displacement of high values to spring months. Significant linear links between δ18O and Southern Annular Mode (SAM) index and Southern Oscillation Index (SOI) were recognised for the summer and spring seasons, respectively. [ABSTRACT FROM AUTHOR]

Fluxes between fractured-karstified and detritic aquifers are commonly poorly understood in many environments. These two types of aquifers are in contact in the southeastern Pampean region in the Argentine Buenos Aires province, and the aim of this work is to analyze their relationship contributing to improve the hydrological model. A joint application of hydrochemical and multi-isotope (δ2H, δ18O, δ13C-TDIC, δ18O-TDIC, 87Sr/86Sr) tools was used. TDIC, δ2H, δ18O and δ13C-TDIC allowed differentiating two main end members. Water in the Pampeano aquifer (PA) which is transferred from the fractured-karstic aquifer (F-KA) is characterised by high TDIC around 500–700 mg/L, isotopically depleted in 18O (about −5.5 ‰) and high δ13C-TDIC (around −10.0 ‰). The other end member is direct recharge water infiltrated into the PA with TDIC ranging from 400 to 500 mg/L, slightly enriched in 18O (δ18O = −4.8 ‰), and δ13C-TDIC in the range of soil CO2 as a result of reactions with calcrete concretions (from −20.0 to −9.0 ‰). Dolomite dissolution is the main process controlling the chemistry of the low-mineralized (Mg–Ca-HCO3) waters, whereas high-mineralized (Na-HCO3) waters are strongly influenced by ion-exchange reactions with adsorbed Ca2+ and Mg2+ and by evaporation. [ABSTRACT FROM AUTHOR]

Copyright of Cirugía y Cirujanos is the property of Publicidad Permanyer SLU and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Despite the fact that Hydra has been studied for more than 200 years, we know surprisingly little about its life history. We show that Hydra vulgaris embryos hatch sporadically over a period ranging from a few days to nine months. We also report, for what seems to be the first time, the presence of Hydra in a vernal pool. Phylogenetic analysis and sexual crossing show that this Hydra is a member of the cosmopolitan Vulgaris clade and is not reproductively isolated from other members of the clade. Our findings lead us to hypothesize that Hydra evolved in an unstable freshwater habitat in which survival required that its life cycle include the use of a bet-hedging reproductive strategy and the formation of an embryo that is desiccation resistant and that can remain dormant for long periods of time. [ABSTRACT FROM AUTHOR]

Despite media coverage of isolated incidents of violent crime perpetuated by undocumented immigrants in cities with sanctuary policies, there is scant systematic research on the relationships between the adoption of sanctuary policies, unauthorized immigration, and crime. We compile city-level data from official sources and use fixed-effects negative binomial regression to examine whether the adoption of city-level sanctuary policies and the concentration of unauthorized Mexican immigrants are associated with homicide and robbery incidents in 107 U.S. cities, across three decades. We find evidence that the adoption of sanctuary policies is associated with a reduction in robberies but not homicide. In contrast, an increase in the relative size of a city's unauthorized Mexican immigrant population corresponds with a reduction in homicide; however, only in sanctuary cities. Lastly, shifts in violence during our study period are consistently related to social structural characteristics of cities, which are findings consistent with social disorganization theory. [ABSTRACT FROM AUTHOR]

Howard Campbell's I Downtown Juárez: Underworlds of Violence and Abuse i is a must-read for scholars interested in violence, the borderlands, and ethnographic methodologies. This takes serious commitment; the insights Campbell has gained on the underbelly of Downtown Juárez's informal economies stem from 30-plus years of ethnographic observation. In December of 2006, within days of taking office, former Mexican president Felipe Calderón publicly declared a war on drug trafficking organizations (DTOs). [Extracted from the article]

Recent police killings of citizens in the United States have attracted massive coverage in the media, large-scale public protests, and demands for reform of police departments throughout the country. This study is based on a content analysis of newspaper coverage of recent high-profile incidents that resulted in a citizen's death in Ferguson, North Charleston, and Baltimore. We identify both incident-specific content as well as more general patterns that transcend the three cases. News media coverage of similar incidents in past decades tended to be episodic and favored the police perspective. Our findings point to some important departures from this paradigm. Reporting in our three cases was more likely to draw connections between discrete incidents, to attach blame to the police, and to raise questions about the systemic causes of police misconduct. These findings may be corroborated in future studies of news media representations of high-profile policing incidents elsewhere. [ABSTRACT FROM AUTHOR]

Abstract: Recent high‐profile, isolated incidents of violent crime committed by deportable noncitizens have led to increased public attention paid to so‐called “sanctuary” cities, with some policymakers calling for the eradication of policies limiting local officials' role in the enforcement of immigration law. This current public and political debate provides an opportunity to critically examine the existing literature on immigrant “sanctuaries.” We begin by offering a broad definition and description of “sanctuary” policies. We follow by discussing how and why such policies have evolved since the early 1980s. Considering the public safety concerns often articulated in contemporary political discourse, we then offer possible sociological explanations regarding how these policies might either be positively or negatively associated with crime. We subsequently highlight findings from existing empirical research that examines the relationship between the adoption or presence of “sanctuary” policies and crime. The few empirical studies that exist illustrate a “null” or negative relationship between these policies and crime. We conclude by offering possible directions for future research. [ABSTRACT FROM AUTHOR]

Recent studies and reports suggest an increased mortality rate of undocumented border crossers (UBCs) in Arizona is the result of heat extremes and climatic change. Conversely, others have shown that deaths have occurred in cooler environments than in previous years. We hypothesized that human locomotion plays a greater role in heat-related mortality and that such events are not simply the result of exposure. To test our hypothesis, we used a postmortem geographic application of the human heat balance equation for 2,746 UBC deaths between 1990 and 2022 and performed regression and cluster analyses to assess the impacts of ambient temperature and exertion. Results demonstrate exertion having greater explaining power, suggesting that heat-related mortality among UBCs is not simply a function of extreme temperatures, but more so a result of the required physical exertion. Additionally, the power of these variables is not static but changes with place, time, and policy. [ABSTRACT FROM AUTHOR]

This study examines the risk factors predicting non-prescribed stimulant use (NPSU) among adolescents, with an emphasis on whether such factors are reflective of instrumental (e.g., studying) and/or recreational (e.g., partying) drug consumption settings. Using data fromMonitoring the Future(2011), we employed a series of logistic regression models to establish predictors of 12-month self-reported Adderall or Ritalin use without a doctor’s note among eighth and tenth graders. Whereas studies of college students have found NPSU to correlate with instrumental motives and productivity-related demands, we find no association between NPSU and indicators of academic strain for this younger sample. Rather, we find that the age of onset and current use of alcohol, tobacco, and marijuana are most predictive of NPSU, which are substances generally associated with social and recreational consumption settings. These findings have potential implications for practitioners concerned with mitigating the harms of general prescription drug misuse, as intervention efforts informed by research conducted among college students may not readily apply to younger populations. Drawing from central tenets of developmental and life course criminology, we call for continued inquiry into the broader socialization and developmental processes that influence NPSU and other prescription drug use patternspriorto early adulthood. [ABSTRACT FROM PUBLISHER]

Transposable elements are one of the major contributors to genome-size differences in metazoans. Despite this, relatively little is known about the evolutionary patterns of element expansions and the element families involved. Here we report a broad genomic sampling within the genus Hydra, a freshwater cnidarian at the focal point of diverse research in regeneration, symbiosis, biogeography, and aging. We find that the genome of Hydra is the result of an expansion event involving long interspersed nuclear elements and in particular a single family of the chicken repeat 1 (CR1) class. This expansion is unique to a subgroup of the genus Hydra, the brown hydras, and is absent in the green hydra, which has a repeat landscape similar to that of other cnidarians. These features of the genome make Hydra attractive for studies of transposon-driven genome expansions and speciation. [ABSTRACT FROM AUTHOR]