Food Preference of Juvenile Siganus rostratus and S. spinus in Guam

Tsuda, Roy T.; Bryan, Patrick G.

doi:10.2307/1443134

Cited by 64 publications

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“…The structure of not been reported in the literature but is closely related to malyngamide A. Both metabolites are present in Microcoleus lyngbyaceus on Guam the food habits of Siganus spinus and S. argenteus (Tsuda & Bryan 1973, Bryan 1975 and other rabbitfishes (Hiatt & Strasburg 1960, Westernhagen 1973a, b, Lundberg & Lipkin 1979 in the western Pacific and Red Sea. These studies have suggested that there are differences in dietary preferences anlong species of siganids as well as between juvenile and adult forms.…”

Section: %mentioning

confidence: 79%

“…These studies have suggested that there are differences in dietary preferences anlong species of siganids as well as between juvenile and adult forms. For instance, Tsuda & Bryan (1973) reported that, on Guam, Chlorodesmis fastigiata is rejected by S. spinus but is readily consumed by S. argenteus. Hay et al (in press) also found that S. doliatus on the Great Barrier reef readily consumed algae coated with the major Chlorodesmis metabolite chlorodesmin.…”

Section: %mentioning

confidence: 99%

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Feeding preferences of adult and juvenile rabbitfish Siganus argenteus in relation to chemical defenses of tropical seaweeds

Vj¹,

Nelson²,

Sanger³

1990

Mar. Ecol. Prog. Ser.

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ABSTRACT. The role of algal secondary metabolites in determining feeding preferences of adult and juvenile rabbitfish Siganus argenteus was examined in outdoor tanks on Guam. Secondary metabolites could not explain the preferences of these herbivores, although the presence of secondary metabolites appeared to account for the low palatability of some seaweeds, such as Tydemania expeditionis and Microcoleus lyngbyaceus. Other species, including Desmla hornemanni and Halimeda discoidea, that contained secondary metabolites with feeding-deterrent properties were of medium preference. Further species that produced secondary metabolites, including Asparagopsis taxiformis, Caulerpa spp., Chlorodesmis fastigiata, Dictyota spp., and Lragora fannosa were rapidly eaten, and neither their extracts nor their isolated metabolites significantly deterred grazing. Responses to algal chemistry differed between adults and juveniles. Juvenile S. argenteus were not deterred by extracts of T. expeditionis, Halymenia durvillaei, H. discoidea, and Enhalus acoroides, or the isolated metabolites chlorodesmin and flexihn that deterred the adults. As regards morphological defenses, several calcified seaweeds were of mehum preference for both adult and juvenile rabbitfish; however, none of the highpreference seaweeds were calcified, and calcification and toughness were associated with low feeding preference.

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Section: %mentioning

confidence: 79%

Section: %mentioning

confidence: 99%

Feeding preferences of adult and juvenile rabbitfish Siganus argenteus in relation to chemical defenses of tropical seaweeds

Vj¹,

Nelson²,

Sanger³

1990

Mar. Ecol. Prog. Ser.

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“…Zebrason~a flavescens was significantly deterred by this algal extract and by ochtodene (Table 3). The whole alga D. hornemanni was also avoided by mixed species of juvenile rabbitfish Siganus spinus and S. argenteus in studies by Tsuda & Bryan (1973) on Guam. The 5 low-preference algae with extracts that were deterrent yet had no secondary metabolites (by TLC and NMR) were Codium geppii, Padina tenuis (both forms), Galaxaura oblongata, and Halymenia durvillaei.…”

Section: Halogenated Monoterpenes Have Been Isolated Frommentioning

confidence: 99%

“…These herbivorous fishes can exert profound influences on coral reef algal communities (RandalJ 1961, Vine 1974, Ogden & Lobel 1978, Hay 1981a, Lewis 1985, Carpenter 1986. Some algae survive the intense herbivory of fishes, and it is known that certain algae are consumed while others are avoided by fishes (Hiatt & Strasburg 1960, Randall 1967, Earle 1972, Tsuda & Bryan 1973, Hobson 1974, Bryan 1975, Ogden 1976, Ogden & Lobel 1978, Lobel & Ogden 1981, Hay 1981a, b, 1984, Littler et al 1983, Lewis 1985, Wolf 1985, Paul & Hay 1986). Jones (1968) noted that of 160 algal genera available to fishes of the family Acanthuridae in Hawaii, only 40 were ' Addressee for correspondence O Inter-Research/Printed in F. R. Germany found in the fishes' stomachs.…”

Section: Introductionmentioning

confidence: 99%

Feeding preferences of the surgeonfish Zebrasoma flavescens in relation to chemical defenses of tropical algae

Wylie¹,

Paul²

1988

Mar. Ecol. Prog. Ser.

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Seaweed preferences of the tropical herbivorous surgeonfish Zebrasorna flavescens were examined in aquarium assays on Guam, in order to examine the role of secondary metabolites in determining its preferences. Of 55 species of macrophytes examined (49 algae, 5 cyanobactena, l seagrass), only 7 species were highly preferred. Seaweed extracts were examined by thin-layer chromatography (TLC) and proton nuclear magnetic resonance (NMR) spectroscopy to determine the presence or absence of secondary metabolites. Extracts from the non-preferred seaweeds and several pure major metabolites from these seaweeds were tested as feeding deterrents by applying them to the surface of Enterornorpha clathrata, a preferred alga. Extracts that contained secondary metabolites and were the most deterrent were from Bryopsis pennata, Chlorodesmis fastigiata, Desmia hornernanni, Microcoleus lyngbyaceus, Liagora farinosa, and Dictyota bartayresii. The deterrent pure metabolites were malygamide A (from M. lyngbyaceus), chlorodesmin (from C. fastigiata), pachydictyol A (from D. bartayresii), ochtodene (from D. hornernanni), and a fatty acid metabolite isolated from L. farinosa. Several extracts which did not contain metabolites based on our chemical analyses were also significantly deterrent including those from Codiurn geppii, Padina tenuis, Galaxaura oblongata, and Halyrnenia durvlllaei. Extracts from Caulerpa racernosa, Avrainvillea obscura, and Asparagopsis taxiformis contained secondary metabolites yet were non-deterrent. The pure metabolites caulerpin, caulerpenyne, and avrainvilleol from C, racernosa and A. obscura were also non-deterrent. Secondary metabolites appear to account for the low palatabhty of many of the seaweeds examined. However, not all secondary metabolites were effective deterrents toward this herbivore.

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“…It is worth mentioning that we also examined specimens identified as M. mouwoi from S. spinus and collected off Guam (BMNH 1976.2. 17.1-60) by Tsuda et al (1976) [specimens deposited in the BMNH by W.J. Tobias] that also could not be morphologically differentiated from current specimens of P. cf.…”

Section: Figs 1-3mentioning

confidence: 97%

Polylabris lingaoensis sp. n. and Polylabris cf. mamaevi Ogawa et Egusa, 1980 (Monogenoidea: Microcotylidae) from perciform fishes in the Gulf of Tonkin, South China Sea

Tingbao¹,

Kritsky²,

Pan³

2007

FOLIA PARASIT

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Abstract. Polylabris lingaoensis sp. n. is described from the gills of the bald glassy, Ambassis gymnocephalus (Chandidae), from the Gulf of Tonkin (South China Sea), near Lingao, Hainan Province, China. The new species is characterized by a midventral vaginal pore, comparatively few (5-7) testes, and 2 parallel rows each comprised of 30-43 microcotylid clamps in the haptor. Polylabris lingaoensis is the only member of the genus known to parasitize a chandid host. Polylabris cf. mamaevi is described from the gills of the mottled spinefoot, Siganus fuscescens (Siganidae), from the South China Sea, which represents new host and locality records for the helminth. The gill parasites from S. fuscescens are tentatively assigned to P. mamaevi pending new collections and restudy of microcotylid species from siganid fishes. Hayward (1996) Ogawa and Egusa (1980) were uncertain whether or not these forms were conspecific with the form from S. stellatus. Polylabris diplodi Euzet et Cauwet, 1967, type species of the genus, was placed in subjective junior synonymy with P. tubicirrus by Santos et al. (1996). Polylabris halichoeres Wang et Zhang, 1998 was subsequently described from Halichoeres nigrescens (Bloch et Schneider) (Labridae)

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Food Preference of Juvenile Siganus rostratus and S. spinus in Guam

Cited by 64 publications

References 0 publications

Feeding preferences of adult and juvenile rabbitfish Siganus argenteus in relation to chemical defenses of tropical seaweeds

Feeding preferences of adult and juvenile rabbitfish Siganus argenteus in relation to chemical defenses of tropical seaweeds

Feeding preferences of the surgeonfish Zebrasoma flavescens in relation to chemical defenses of tropical algae

Polylabris lingaoensis sp. n. and Polylabris cf. mamaevi Ogawa et Egusa, 1980 (Monogenoidea: Microcotylidae) from perciform fishes in the Gulf of Tonkin, South China Sea

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