Jacob Barnett

University of Massachusetts Amherst | UMass Amherst · Department of Biology

Tomato domestication history has been revealed to be a highly complex story. A major contributor to this complexity is an evolutionary intermediate group (Solanum lycopersicum var. cerasiforme; SLC) between the cultivated tomato (Solanum lycopersicum var. lycopersicum; SLL) and its wild relative (Solanum pimpinellifolium; SP). SLC includes accessio...

Premise: The scents of volatile organic compounds (VOCs) are an important component of ripe fleshy fruit attractiveness, yet their variation across closely related wild species is poorly understood. Phylogenetic patterns in these compounds and their biochemical pathways offer insight into the evolutionary drivers of fruit diversity, including whet...

Societal Impact Statement Fleshy fruits provide humans with many flavorful and nutritious crops. Understanding the diversity of these plants is fundamental to managing agriculture and food security in a changing world. This study surveyed fruit trait variation across species of tomato wild relatives and explored associations among color, size, shap...

Tomato domestication history has been revealed to be a highly complex story. A major contributor to this complexity is an evolutionary intermediate group ( Solanum lycopersicum var. cerasiforme (Alef.) Voss; SLC) between the domesticated tomato ( Solanum lycopersicum var. lycopersicum L.; SLL) and its wild relative ( Solanum pimpinellifolium L.; SP...

We explored the effects of recent forest fragmentation on fine-scale patterns of population structuring and genetic diversity in populations of White-ruffed Manakins (Corapipo altera) inhabiting premontane forest fragments of varying size in southwestern Costa Rica. Habitat fragmentation is a major conservation concern for avian populations worldwi...

Many ecological relationships that are inherently reciprocal are often studied from one perspective only (Agrawal et al . 2007). One example is the interaction between tropical forests and nearctic-neotropical migratory songbirds (hereafter migrants). Several studies have determined that some migrant populations are limited by conditions at their t...

We describe 15 polymorphic microsatellite loci from the white-ruffed manakin Corapipo altera, a common understory bird of Neotropical lowland and montane evergreen forests from eastern Honduras to northwestern Colombia. These markers were developed in order to assess population structure and genetic diversity in a fragmented landscape, and to study...

We describe nine microsatellite loci from the chestnut-backed antbird ( Myrmeciza exsul ), and one locus from the spotted antbird ( Hylophylax naevioides ) that cross-amplifies in chestnut-backed antbirds. The chestnut-backed antbird is a common understorey insectivore in Neotropical lowland rain forests ranging from eastern Nicaragua to western Ec...