Potential Spawning Strategy and Fecundity of Alabama Shad (Alosa alabamae) from the Apalachicola River, Florida

Alabama shad (Alosa alabamae), classified as a Species of Concern by the National Marine Fisheries Service, are native to the northern Gulf of Mexico drainages. Our study estimated the fecundity of 39 female Alabama shad from the Apalachicola River, Florida. Individuals ranged in age from 2-4 years with an average weight of 729 g. Samples (1 g) were cut from the center of each ovary, and oocytes present were counted. Diameters of 50 randomly-sampled oocytes were measured per sample. Oocyte diameters ranged from 0.3-2.7 mm, with a mode of 1.5 mm. The unimodal oocyte diameter percent frequency distribution suggests that Alabama shad spawn multiple times in a spawning season. Total mean ovary weight was 67.88 ± 25.90 (s.d.) g/individual, with average annual fecundity estimated to be 79,420 ± 26,896 (s.d.) oocytes/individual. Our results were consistent with previous Alabama shad fecundity studies out of the Apalachicola River

Regioselective magnesiation of N-heterocyclic molecules: securing insecure cyclic anions by a β-diketiminate-magnesium clamp

Using a specially designed magnesium metallating manifold, combining kinetically activated TMP amide base with a sterically amplified β-diketiminate ligand, this study has established a new regioselective strategy for magnesiation of challenging N-heterocyclic molecules. The broad scope of the approach is illustrated through reactions of pyrazine, triazoles and substituted pyridines through isolation and structural elucidation of their magnesiated intermediates

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Issue Subtitle: "Stress!!

Reporter

Issue Subtitled: "The Abortion Debate Returns to Western New York

ESMValTool

ESMValTool: A community diagnostic and performance metrics tool for routine evaluation of Earth system models in CMIP