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Host-plant adaptation drives the parallel evolution of reproductive isolation
TLDR
It is reported that divergent selection for host adaptation, and not genetic drift, has promoted the parallel evolution of sexual isolation in this species, a clear demonstration that host-plant adaptation can play a crucial and repeatable role in the early stages of speciation.
THE EFFECTS OF THE RELATIVE GEOGRAPHIC SCALES OF GENE FLOW AND SELECTION ON MORPH FREQUENCIES IN THE WALKING‐STICK TIMEMA CRISTINAE
  • C. Sandoval
  • Biology, Medicine
    Evolution; international journal of organic…
  • 1 December 1994
TLDR
Two morphs of the walking‐stick Timema cristinae were each strongly associated with patches of distinct species of food plants on which they are most cryptic, and result (3) is consistent with Levene's multiple‐niche polymorphism model.
Reproductive isolation driven by the combined effects of ecological adaptation and reinforcement
TLDR
These findings demonstrate the joint effects of reinforcement, ecological adaptation and gene flow on progress towards speciation in the wild in Timema cristinae walking-stick insects.
Differential visual predation on morphs of Timema cristinae (Phasmatodeae:Timemidae) and its consequences for host range
TLDR
The striped and colour polymorphisms in T. cristinae appear to be an evolutionary consequence of differential predation on different backgrounds, and the implications of differentialpredation to food-plant utilization are discussed.
Molecular phylogenetics of sexual and parthenogenetic Timema walking–sticks
TLDR
COI divergence levels between each of the three parthenogens and their closest sexual relative suggest ancient origins of parthenogenesis, 1.5 to 3 million years ago, that may coincide with the extensive glaciation that formed the North American ice sheets.
Restoration of Breeding by Snowy Plovers Following Protection from Disturbance
Promoting recreation and preserving wildlife are often dual missions for land managers, yet recreation may impact wildlife. Because individual disturbances are seemingly inconsequential, it is
Plasticity in web design in the spider Parawixia bistriata : a response to variable prey type
TLDR
The spider Parawixia bistriata spun two types of webs in response to temporally fluctuating prey availability: small webs of fine mesh were spun daily at sunset and ceptured mainly small dipterans of the genus Dorhniphora.
Ecological Niche Dimensionality and the Evolutionary Diversification of Stick Insects
TLDR
It is shown that divergent selection on the single niche dimension of cryptic colouration can result in ecotype formation and intermediate levels of phenotypic and reproductive divergence between populations feeding on different hosts, suggesting that dimensionality of selection may complement genetic and geographic explanations for the degree of diversification in nature.
Transitions between phases of genomic differentiation during stick-insect speciation
TLDR
Intermediate phases of speciation are associated with genome-wide differentiation and mate choice, but not growth of a few genomic islands, and a gap in genomic differentiation between sympatric taxa that still exchange genes and those that do not is found.
Descriptions of three new species of Timema (Phasmatoptera: Timematodea: Timematidae) and notes on three other species
TLDR
A third new species, T. morongensis, received from a another researcher, also is described.
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