Search Results - "SAPORITO, Ralph A"

Linking Predator Responses to Alkaloid Variability in Poison Frogs by Lawrence, J. P., Rojas, Bibiana, Blanchette, Annelise, Saporito, Ralph A., Mappes, Johanna, Fouquet, Antoine, Noonan, Brice P.

“…Many chemically-defended/aposematic species rely on diet for sequestering the toxins with which they defend themselves. This dietary acquisition can lead to…”
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Maternal chemical defenses predict offspring defenses in a dendrobatid poison frog by Brooks, Olivia L., James, Jessie J., Saporito, Ralph A.

“…Within and among populations, alkaloid defenses of the strawberry poison frog ( Oophaga pumilio ) vary spatially, temporally, and with life history stage…”
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Evidence of maternal provisioning of alkaloid-based chemical defenses in the strawberry poison frog Oophaga pumilio by Stynoski, Jennifer L, Torres-Mendoza, Yaritbel, Sasa-Marin, Mahmood, Saporito, Ralph A

“…Many organisms use chemical defenses to reduce predation risk. Aposematic dendrobatid frogs sequester alkaloid-based chemical defenses from a diet of…”
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review of chemical ecology in poison frogs by Saporito, Ralph A, Donnelly, Maureen A, Spande, Thomas F, Garraffo, H. Martin

“…Herein we review what is known about the chemical ecology of poison frogs with a focus on dendrobatid poison frogs. While five anuran families are known to…”
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Maternal Provisioning of Alkaloid Defenses are Present in Obligate but not Facultative Egg Feeding Dendrobatids by Villanueva, Emily D., Brooks, Olivia L., Bolton, Sarah K., Savastano, Nina, Schulte, Lisa M., Saporito, Ralph A.

“…Poison frogs sequester alkaloid defenses from a diet of largely mites and ants. As a result, frogs are defended against certain predators and microbial…”
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Use of whole‐body cryosectioning and desorption electrospray ionization mass spectrometry imaging to visualize alkaloid distribution in poison frogs by Jeckel, Adriana M., Matsumura, Kunihiro, Nishikawa, Keisuke, Morimoto, Yoshiki, Saporito, Ralph A., Grant, Taran, Ifa, Demian R.

“…Ambient mass spectrometry is useful for analyzing compounds that would be affected by other chemical procedures. Poison frogs are known to sequester alkaloids…”
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A Test of Aposematism in the Dendrobatid Poison Frog Oophaga pumilio: The Importance of Movement in Clay Model Experiments by Paluh, Daniel J, Hantak, Maggie M, Saporito, Ralph A

“…Brightly colored frogs of Dendrobatidae contain alkaloid-based chemical defenses which appear to be utilized as a deterrent to predators. The conspicuous…”
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Sequestered and Synthesized Chemical Defenses in the Poison Frog Melanophryniscus moreirae by Jeckel, Adriana M., Grant, Taran, Saporito, Ralph A.

“…Bufonid poison frogs of the genus Melanophryniscus contain alkaloid-based chemical defenses that are derived from a diet of alkaloid-containing arthropods. In…”
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Dietary Alkaloid Sequestration in a Poison Frog: An Experimental Test of Alkaloid Uptake in Melanophryniscus stelzneri (Bufonidae) by Hantak, Maggie M., Grant, Taran, Reinsch, Sherri, Mcginnity, Dale, Loring, Marjorie, Toyooka, Naoki, Saporito, Ralph A.

“…Several lineages of brightly colored anurans independently evolved the ability to secrete alkaloid-containing defensive chemicals from granular glands in the…”
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Total Synthesis of Decahydroquinoline Poison Frog Alkaloids ent- cis -195A and cis -211A by Okada, Takuya, Wu, Naizhen, Takashima, Katsuki, Ishimura, Jungoh, Morita, Hiroyuki, Ito, Takuya, Kodama, Takeshi, Yamasaki, Yuhei, Akanuma, Shin-Ichi, Kubo, Yoshiyuki, Hosoya, Ken-Ichi, Tsuneki, Hiroshi, Wada, Tsutomu, Sasaoka, Toshiyasu, Shimizu, Takahiro, Sakai, Hideki, Dwoskin, Linda P, Hussaini, Syed R, Saporito, Ralph A, Toyooka, Naoki

“…The total synthesis of two decahydroquinoline poison frog alkaloids ent- - and - were achieved in 16 steps (38% overall yield) and 19 steps (31% overall…”
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The relationship between poison frog chemical defenses and age, body size, and sex by Jeckel, Adriana M, Saporito, Ralph A, Grant, Taran

“…Amphibians secrete a wide diversity of chemicals from skin glands as defense against predators, parasites, and pathogens. Most defensive chemicals are produced…”
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Chemical characterization of the adhesive secretions of the salamander Plethodon shermani (Caudata, Plethodontidae) by von Byern, Janek, Grunwald, Ingo, Kosok, Max, Saporito, Ralph A., Dicke, Ursula, Wetjen, Oliver, Thiel, Karsten, Borcherding, Kai, Kowalik, Thomas, Marchetti-Deschmann, Martina

“…Salamanders have developed a wide variety of antipredator mechanisms, including tail autotomy, colour patterns, and noxious skin secretions. As an addition to…”
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Oribatid mites as a major dietary source for alkaloids in poison frogs by Saporito, Ralph A, Donnelly, Maureen A, Norton, Roy A, Garraffo, H. Martin, Spande, Thomas F, Daly, John W

“…Alkaloids in the skin glands of poison frogs serve as a chemical defense against predation, and almost all of these alkaloids appear to be sequestered from…”
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Dose‐dependent alkaloid sequestration and N‐methylation of decahydroquinoline in poison frogs by Jeckel, Adriana M., Bolton, Sarah K., Waters, Katherine R., Antoniazzi, Marta M., Jared, Carlos, Matsumura, Kunihiro, Nishikawa, Keisuke, Morimoto, Yoshiki, Grant, Taran, Saporito, Ralph A.

“…Sequestration of chemical defenses from dietary sources is dependent on the availability of compounds in the environment and the mechanism of sequestration…”
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Arthropod Alkaloids in Poison Frogs: A Review of the ‘Dietary Hypothesis’ by A. Saporito, Ralph, F. Spande, Thomas, Martin Garraffo, H., A. Donnelly, Maureen

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Taxonomic distribution of defensive alkaloids in Nearctic oribatid mites (Acari, Oribatida) by Saporito, Ralph A, Norton, Roy A, Garraffo, Martin H, Spande, Thomas F

“…The opisthonotal (oil) glands of oribatid mites are the source of a wide diversity of taxon-specific defensive chemicals, and are likely the location for the…”
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Alkaloid defenses of co-mimics in a putative Müllerian mimetic radiation by Stuckert, Adam M M, Saporito, Ralph A, Venegas, Pablo J, Summers, Kyle

“…Polytypism in aposematic species is unlikely according to theory, but commonly seen in nature. Ranitomeya imitator is a poison frog species exhibiting…”
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Spatial and temporal patterns of alkaloid variation in the poison frog Oophaga pumilio in Costa Rica and Panama over 30 years by Saporito, Ralph A., Donnelly, Maureen A., Jain, Poonam, Martin Garraffo, H., Spande, Thomas F., Daly, John W.

“…A total of 232 alkaloids, representing 21 structural classes were detected in skin extracts from the dendrobatid poison frog Oophaga pumilio, collected from 53…”
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occurrence of defensive alkaloids in non-integumentary tissues of the Brazilian red-belly toad Melanophryniscus simplex (Bufonidae) by Grant, Taran, Colombo, Patrick, Verrastro, Laura, Saporito, Ralph A

“…The red-belly toads (Melanophryniscus) of southern South America secrete defensive alkaloids from dermal granular glands. To date, all information on…”
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Formicine ants: An arthropod source for the pumiliotoxin alkaloids of dendrobatid poison frogs by Saporito, R.A, Garraffo, H.M, Donnelly, M.A, Edwards, A.L, Longino, J.T, Daly, J.W

“…A remarkable diversity of bioactive lipophilic alkaloids is present in the skin of poison frogs and toads worldwide. Originally discovered in neotropical…”
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