Genetic diversity and life-history traits of bonefish Albula spp. from the Red Sea.

The management of bonefishes Albula spp. has been hindered by unresolved species distributions and a general lack of life-history information. This study provides the first genetic species identifications of Albula spp. from the northern Indian Ocean. The roundjaw bonefish Albula glossodonta was documented in the Red Sea, and the smallscale bonefish A. oligolepis was identified in the Gulf of Aden with no evidence supporting sympatry. Estimates of genetic differentiation indicate three closely related lineages of A. glossodonta in the Red Sea, Indian Ocean and Pacific Ocean (Red Sea-Pacific Ocean, Fst = 0.295; Red Sea-Seychelles, Fst = 0.193; Pacific Ocean-Seychelles, Fst = 0.141). In addition, the authors provide the first life-history information of Albula spp. in the Indian Ocean. Age-based growth models of A. glossodonta from the Red Sea demonstrated statistically significant differences compared to previously published data from the Pacific Ocean. Spawning activity during winter months was derived from gonado-somatic index values of A. glossodonta from the Red Sea and corresponded with spawning seasonality previously documented for the species in the Pacific Ocean. The results of this study aid in refining biogeographical uncertainties of Albula spp. and illustrate the importance of collecting regional growth information for subsequent management of A. glossodonta.

Peculiar citric acid cycle of hydrothermal vent chemolithoautotroph Hydrogenovibrio crunogenus, and insights into carbon metabolism by obligate autotrophs.

The genome sequence of the obligate chemolithoautotroph Hydrogenovibrio crunogenus paradoxically predicts a complete oxidative citric acid cycle (CAC). This prediction was tested by multiple approaches including whole cell carbon assimilation to verify obligate autotrophy, phylogenetic analysis of CAC enzyme sequences and enzyme assays. Hydrogenovibrio crunogenus did not assimilate any of the organic compounds provided (acetate, succinate, glucose, yeast extract, tryptone). Enzyme activities confirmed that its CAC is mostly uncoupled from the NADH pool. 2-Oxoglutarate:ferredoxin oxidoreductase activity is absent, though pyruvate:ferredoxin oxidoreductase is present, indicating that sequence-based predictions of substrate for this oxidoreductase were incorrect, and that H. crunogenus may have an incomplete CAC. Though the H. crunogenus CAC genes encode uncommon enzymes, the taxonomic distribution of their top matches suggests that they were not horizontally acquired. Comparison of H. crunogenus CAC genes to those present in other 'Proteobacteria' reveals that H. crunogenus and other obligate autotrophs lack the functional redundancy for the steps of the CAC typical for facultative autotrophs and heterotrophs, providing another possible mechanism for obligate autotrophy.

A dispersal-dependent zone of introgressive hybridization between weakfish, Cynoscion regalis, and sand seatrout, C. arenarius, (Sciaenidae) in the Florida Atlantic.

Five diagnostic codominant nuclear DNA markers and a diagnostic mitochondrial DNA marker were used to survey weakfish (Cynoscion regalis) and sand seatrout (C. arenarius), with particular focus on heretofore uncharacterized juvenile populations along the Florida (FL) Atlantic coast. Geographic and reproductive ranges of weakfish and sand seatrout were shown to overlap on the Atlantic coast along north and central FL. An active bidirectional zone of introgressive hybridization exists between these taxa, centered in the St Johns River, FL. Strong patterns of Hardy-Weinberg, linkage, and cytonuclear disequilibrium and a bimodal hybrid index distribution were observed for juvenile cohorts in the zone center, coupled with narrow (∼240 km) concordant clines. Parental forms had disparate habitat preferences; hybrid forms occurred predominantly in intermediate habitats. All genetic data were consistent with the hypothesis that the C. arenarius-C. regalis hybrid zone is maintained by a dynamic equilibrium between continued interspecific gene flow and one or more opposing forces. Cytonuclear analyses indicated that parental forms mate assortatively in the zone but that mate recognition was imperfect. Ethological mating dynamics are likely stabilized by some form of endogenous or exogenous postfertilization selection against hybrids such that parental taxa will likely continue to evolve independently.

PERMANENT GENETIC RESOURCES: Twelve polymorphic microsatellite markers for the bonefish, Albula vulpes and two congeners.

Twelve polymorphic microsatellite loci were isolated for the bonefish, Albula vulpes using a polymerase chain reaction-based procedure. The number of alleles ranged from two to 23 (mean = 8.8) in 37 specimens from south Florida. Observed and expected heterozygosities ranged from 0.07 to 0.77 (mean = 0.42) and from 0.07 to 0.84 (mean = 0.48), respectively. There were no significant departures from Hardy-Weinberg equilibrium and no evidence of genotypic disequilibrium between any pair of loci. In a cross-amplification test, all markers yielded appropriately sized alleles for specimens of the provisional Albula sp. B and 11 of the 12 loci amplified for those of Albula glossodonta.

Losing a training analyst for ethical violations: a candidate's perspective.

The author presents her experience as the analysand of a training analyst who was investigated and expelled for ethical violations with another patient, including sexual-boundary violations, during her analytic training. While boundary violations by training analysts are not uncommon, the particular trauma experienced by 'bystanders' such as candidates and supervisees is not discussed in the literature, nor the response of institutes to the educational problems that are generated. The author illustrates the complications for candidates that arise from the dual roles of training analyst as educator and analyst when he or she faces investigation or censure, including isolation and secrecy, which promote various splits in the candidate, analytic dyad and group, as well as loyalty conflicts. The discussion covers three phases of the author's experience as a candidate-analysand, namely the period encompassing the institute's ethics investigation, the announcement of findings to her and to the institute as a group, and the ensuing individual and group dynamics generated by her analyst's expulsion from the institute and revocation of his medical license. Theoretical perspectives are utilized to understand the group regression, including contamination and contagion fears, which occurred in the wake of the training analyst's expulsion, and the impact of these processes on the candidate, including the pressure to function as a 'container' for projections of the group. Implications and recommendations for candidates and institutes are made for dealing helpfully with trainees who are affected by the process of dealing with a training analyst's ethical violations. Short-term and longer-term outcomes of the experience are considered.