In the Pleistocene, climatic changes resulted in cycles of sea‐level fluctuation that periodically fragmented islands into aggregate island complexes. These temporary saltwater barriers between islands within an island bank had the potential to decrease migration between populations on separate islands, resulting in increased genetic divergence and potentially speciation. In the Lesser Antilles, Anolis lizards (anoles) are dis...

Seagrass beds provide essential habitat for many fish species. This study utilized over a decade (2009 to 2022) of annual seagrass monitoring data to investigate trends in seagrass composition with the introduction of the non-native species, Halophila stipulacea . Fish community surveys, as well as benthic community surveys, were also conducted within soft bottom habitat of two Caribbean bays in 2023. Seagrass composition saw...

Declines in insect abundance are a cause for concern, with potential downstream impacts on ecosystem function. Insects are key food resources for insectivorous vertebrates, with evidence that reductions in prey availability may influence population dynamics. Yet quantifying direct effects at large spatial scales is difficult, both due to data limitations and because correlations may reflect shared responses to environmental ch...

A 60-day feeding trial was performed to determine the effects of diets with two levels of protein (35 and 40%) and three lipids to carbohydrate ratios (L:C ratios 2:1, 1:2, and 1:6) in the gene expression of lipid (acetyl-coA carboxylase, acc ; fatty acid synthetase, fas ; carnitine palmitoyl transferase-1, ctp1 ), carbohydrate (hexokinase, hk ; glucose-6-phosphatase, g6p ; phosphoenol pyruvate carboxylkinase, pepck ), and the...

The cinnamon river shrimp ( Macrobrachium acanthurus ) is distributed along the Atlantic Ocean, from the United States to Brazil. This species represents important resources for local communities of fishermen, but natural populations are facing a progressive decline. For several years, the aquaculture supplementation of this species has been suggested as an alternative to fisheries. M. acanthurus presents several characteristi...