The influence of geographic heterogeneity in predation pressure on sexual signal divergence in an Amazonian frog species complex

2012 ◽  
Vol 26 (1) ◽  
pp. 216-222 ◽  
Author(s):  
P. A. Trillo ◽  
K. A. Athanas ◽  
D. H. Goldhill ◽  
K. L. Hoke ◽  
W. C. Funk
Keyword(s):  
Species Complex ◽  
Predation Pressure ◽  
Sexual Signal ◽  
Frog Species ◽  
Signal Divergence

A new species of the Spinomantis bertini species complex (Anura: Mantellidae) from Pic d’Ivohibe Special Reserve (Madagascar)

Zootaxa ◽  
2019 ◽  
Vol 4656 (1) ◽  
pp. 133-142 ◽  
Author(s):  
JOANA SABINO-PINTO ◽  
ANDOLALAO RAKOTOARISON ◽  
MOLLY C. BLETZ ◽  
DEVIN EDMONDS ◽  
FRANK GLAW ◽  
...  
Keyword(s):  
New Species ◽  
Dna Sequences ◽  
Species Complex ◽  
Nuclear Dna ◽  
The Other ◽  
Rrna Gene ◽  
Frog Species ◽  
Mitochondrial 16S Rrna Gene ◽  
Morphological Differences ◽  
A New Species

We describe a new frog species of the Spinomantis bertini species complex based on congruent genetic evidence from mitochondrial and nuclear DNA sequences as well as minor morphological differences. A molecular phylogeny derived from the mitochondrial 16S rRNA gene revealed that Spinomantis mirus sp. nov. is sister to a clade containing the other two described species of the species complex, S. bertini and S. beckei, but strongly differentiated from these two species by 8.1–9.8% pairwise distances in this gene. DNA sequences from two nuclear genes revealed that S. mirus sp. nov. shares no alleles with these two species. Phenotypically, S. mirus sp. nov. differs from the other species of the complex by its larger size and some aspects of its coloration, including clear mottling on the flanks, tri-color banding on the legs, and distinct brown dots on the dorsum. The new species is so far only known from Pic d’Ivohibe Special Reserve. Its distribution thus appears to not overlap with those of the other two species, which as far as known are restricted to the Andohahela Massif in the extreme South-East of Madagascar, at a distance of about 250 km from Ivohibe. 

scholarly journals Anthropogenic ecosystem fragmentation drives shared and unique patterns of sexual signal divergence among three species of Bahamian mosquitofish

2015 ◽  
Vol 8 (7) ◽  
pp. 679-691 ◽  
Author(s):  
Sean T. Giery ◽  
Craig A. Layman ◽  
R. Brian Langerhans
Keyword(s):  
Sexual Signal ◽  
Ecosystem Fragmentation ◽  
Signal Divergence

scholarly journals Vicariance and Its Impact on the Molecular Ecology of a Chinese Ranid Frog Species-Complex (Odorrana schmackeri, Ranidae)

PLoS ONE ◽  
2015 ◽  
Vol 10 (9) ◽  
pp. e0138757 ◽  
Author(s):  
Yongmin Li ◽  
Xiaoyou Wu ◽  
Huabin Zhang ◽  
Peng Yan ◽  
Hui Xue ◽  
...  
Keyword(s):  
Species Complex ◽  
Molecular Ecology ◽  
Frog Species

Sympatric sexual signal divergence among North American Calopteryx damselflies is correlated with increased intra- and interspecific male–male aggression

2013 ◽  
Vol 68 (2) ◽  
pp. 275-282 ◽  
Author(s):  
Vikram K. Iyengar ◽  
Thomas Castle ◽  
Sean P. Mullen
Keyword(s):  
North American ◽  
Male Aggression ◽  
Sexual Signal ◽  
Signal Divergence

Hiding in the highlands: Evolution of a frog species complex of the genus Ptychadena in the Ethiopian highlands

2014 ◽  
Vol 71 ◽  
pp. 157-169 ◽  
Author(s):  
Xenia Freilich ◽  
Marc Tollis ◽  
Stéphane Boissinot
Keyword(s):  
Species Complex ◽  
Ethiopian Highlands ◽  
Frog Species

Phylogeographic inference using Bayesian model comparison across a fragmented chorus frog species complex

2015 ◽  
Vol 24 (18) ◽  
pp. 4739-4758 ◽  
Author(s):  
Lisa N. Barrow ◽  
Alyssa T. Bigelow ◽  
Christopher A. Phillips ◽  
Emily Moriarty Lemmon
Keyword(s):  
Bayesian Model ◽  
Species Complex ◽  
Model Comparison ◽  
Bayesian Model Comparison ◽  
Frog Species ◽  
Chorus Frog

Does predation pressure affect learning and memory?

2002 ◽  
Author(s):  
Victoria Braithwaite
Keyword(s):  
Learning And Memory ◽  
Predation Pressure

Identification of sibling species in the genus Eucyclops from water-bodies of Ukraine and Russia using crossbreeding studies

2014 ◽  
Vol 25 (1-2) ◽  
pp. 61-68 ◽  
Author(s):  
V. I. Monchenko ◽  
L. P. Gaponova ◽  
V. R. Alekseev
Keyword(s):  
Cryptic Species ◽  
River Basin ◽  
Black Sea ◽  
Species Complex ◽  
River Basins ◽  
Water Bodies ◽  
Similar Species ◽  
Basin Water ◽  
Different Populations ◽  
Baltic Sea Basin

Crossbreeding experiments were used to estimate cryptic species in water bodies of Ukraine and Russia because the most useful criterion in species independence is reproductive isolation. The problem of cryptic species in the genus Eucyclops was examined using interpopulation crosses of populations collected from Baltic Sea basin (pond of Strelka river basin) and Black Sea basin (water-reservoires of Dnieper, Dniester and Danube rivers basins). The results of reciprocal crosses in Eucyclops serrulatus-group are shown that E. serrulatus from different populations but from water bodies belonging to the same river basin crossed each others successfully. The interpopulation crosses of E. serrulatus populations collected from different river basins (Dnipro, Danube and Dniester river basins) were sterile. In this group of experiments we assigned evidence of sterility to four categories: 1) incomplete copulation or absence of copulation; 2) nonviable eggs; 3) absence of egg membranes or egg sacs 4) empty egg membranes. These crossbreeding studies suggest the presence of cryptic species in the E. serrulatus inhabiting ecologically different populations in many parts of its range. The same crossbreeding experiments were carries out between Eucyclops serrulatus and morphological similar species – Eucyclops macruroides from Baltic and Black Sea basins. The reciprocal crossings between these two species were sterile. Thus taxonomic heterogeneity among species of genus Eucyclops lower in E. macruroides than in E. serrulatus. The interpopulation crosses of E. macruroides populations collected from distant part of range were fertile. These crossbreeding studies suggest that E. macruroides species complex was evaluated as more stable than E. serrulatus species complex.

Colletotrichum Gloeosporioides Species Complex: Pathogen Causing Anthracnose, Gummosis and Die-Back Diseases of Cashew (Anacardium Occidentale L.) In Ghana

2020 ◽  
Vol 2 (6) ◽  
Author(s):  
A. Muntala ◽  
P. M. Norshie ◽  
K. G. Santo ◽  
C. K. S. Saba
Keyword(s):  
Species Complex ◽  
Colletotrichum Gloeosporioides ◽  
Potato Dextrose Agar ◽  
Causal Agent ◽  
Anacardium Occidentale ◽  
Causative Organism ◽  
Pathogenicity Test ◽  
Small Water ◽  
Colletotrichum Gloeosporioides Species Complex

A survey was conducted in twenty-five cashew (Anacardium occidentale) orchards in five communities in the Dormaa-Central Municipality of Bono Region of Ghana to assess the incidence and severity of anthracnose, gummosis and die-back diseases on cashew. Cashew diseased samples of leaves, stem, inflorescences, twigs, flowers, nuts and apples showing symptoms (e. g. small, water-soaked, circular or irregular yellow, dark or brown spots or lesions on leaves, fruits and flowers, sunken surface, especially on the apples, blight, gum exudates) were collected for isolation of presumptive causative organism. The pathogen was isolated after disinfecting the excised diseased pieces in 70% ethanol, plated on potato dextrose agar (PDA) and incubated at 28 oC for 3 to 7 days. The identity of the putative pathogen was morphologically and culturally confirmed as belonging to Colletotrichum gloeosporioides species complex using standard mycological identification protocols. The pathogen had varied conidia sizes of between 9-15 up to 20 μm in length and diameter of 3-6 μm. The conidia were straight and cylindrically shaped with rounded or obtuse ends. The septate mycelium was whitish-grey, velvety and cotton-like in appearance from the top. The results confirmed the presence of the pathogen in the orchards with incidence ranging from 6.9% and 14.0% for gummosis and averaged 22.9% for anthracnose infected orchards. The result of the pathogenicity test confirmed the isolates to be pathogenic on inoculated cashew seedlings and were consistently re-isolated, thereby establishing the pathogen as the true causal agent of the said diseases in cashew trees and thus completed the Koch’s postulate.

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