Diet and Gut Morphology in Fishes, with Special Reference to the Monkeyface Prickleback, Cebidichthys violaceus (Stichaeidae: Blennioidei)

Montgomery, W. Linn

doi:10.2307/1443527

Cited by 70 publications

(60 citation statements)

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“…Yet, this number could not be considered as low, taken into account that relations between length and weight, the most well studied parameters of the biology of fish (e.g., Anderson and Gutreuter 1983), are given for approximately over 2000 species (Binohlan and Pauly 2000). All the information presented here was either given in a few gut-related papers (such as those of e.g., Al-Hussaini 1947, Zihler 1982, Kramer and Bryant 1995a and publications on fish morphology (e.g., Montgomery andSunders 1985, Kassam et al 2002) or usually provided as a by-product of research on feeding habits (e.g., Beumer 1978, Rosecchi 1983, Pölzer and Patzner 2000.…”

Section: Discussionmentioning

confidence: 99%

“…(Kramer and Bryant 1995a, b). The fact that this species grouped along with the plant-feeders, could be attributed to its body form, which, in general, seems to define the general form and structure of gut (e.g., Montgomery 1977, Verigina 1991, Cleveland and Montgomery 2003, Karachle 2008. Its elongated body, therefore, might allow the species to have a gut longer than its body, assuming that it possesses folds and loops.…”

Section: Discussionmentioning

confidence: 99%

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Intestine Morphometrics of Fishes: A Compilation and Analysis of Bibliographic Data

Karachle¹,

Στεργίου²

2010

Acta Icth et Piscat

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In fishes, both external (e.g., shape, size and position of mouth, shape of caudal fin) and internal morphology (e.g., stomach shape and size, gut length: GL) provide important information on a species' feeding ecology (e.g., Keast and Webb 1966, Schmitt and Holbrook 1984, Kaiser and Hughes 1993, Juanes 1994, Juanes and Conover 1994, Hart 1997, Wootton 1998. Exploration of the relations between various feeding-related morphological characteristics with body length ** , such as body girth (e.g., Stergiou and Karpouzi 2003), mouth dimensions (horizontal and vertical mouth opening, gape area; e.g., Karpouzi and Stergiou 2003), and GL (e.g., Karachle and Stergiou 2006, 2007), are of great importance for understanding the biology and ecology of fishes (e.g., Peters 1983, Kramer and Bryant 1995a, b, Wootton 1998, Froese and Pauly 2000, as well as pinpointing the ecological role of a species in the aquatic food webs (e.g., Stergiou 2003, Froese and Pauly 2008).Gut length, in particular, provides important information on species' feeding habits in almost all vertebrate classes, e.g., fishes (Kramer and Bryant 1995a); reptiles (O'Grady et al. 2005); birds (e.g., Ricklefs 1996); and mammals (e.g., Chivers and Hladik 1980). In fishes, it can also be used as a reference point for interspecific comparisons (e.g., Al-Hussaini 1947). In this work, information on intestinal indices and relations between GL and body length and weight were compiled from the available bibliography. This data was related to species' feeding habits, fractional trophic level values (TROPHs) and taxonomy, as provided in FishBase (Froese and Pauly 2008), in order to identify possible patterns and correlations of feeding habits and evolutionary traits with intestinal growth. Background. The examination of morphological features related to feeding in fish, as well as their relation with body length, are of increasing scientific interest. In the present study, information on intestine (gut) morphometrics that appear in the relevant literature has been compiled, analysed, and discussed. Materials and Methods. Search of gut-related bibliography was conducted, using online literature databases on fish feeding and ecomorphology. The resulted data was tabulated. Relationships between mean, minimum, and maximum relative gut length (RGL) and intestine length weight index (ILW, Zihler's index), as provided by the original author, with species' fractional trophic levels (TROPHs; extracted from FishBase) were explored. Finally, using the relations between gut length (GL) and body length (L) provided by the original authors, regressions were reconstructed and compared based on species' feeding habits and taxonomy.Results. The amount of information related to gut morphometrics referred to 498 species. The relations between GL and L referred to 71 species, but four species were omitted from the analyses. Mean, minimum, and maximum RLG and ILW values were negatively related (for all cases: P < 0.01) with TROPH. The GL-L regressions performed for 67 species revealed ...

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Intestine Morphometrics of Fishes: A Compilation and Analysis of Bibliographic Data

Karachle¹,

Στεργίου²

2010

Acta Icth et Piscat

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“…We also calculated the average intestinal circumference, using the diameter measurements, which we then multiplied by intestine length to determine gross surface area. These measurements provided a surface area estimate to detect broad qualitative trends in morphometrics (Montgomery 1977); possible differences in intestinal epithelium were not examined in this study. We estimated intestine volume as the volume of a cylinder with mean intestine diameter and measured intestine length.…”

Section: Measurements Of the Intestinementioning

confidence: 99%

“…In addition, the RIL of the threespot damselfish ($3) was also lower than that reported for other herbivorous pomacentrids (4.4-10.0; Horn 1989), at the low end of values suggested for other herbivores, and in the mid-range of values suggested for omnivores. In other instances of herbivorous fishes possessing relative intestine lengths <2, factors such as body form may impose morphological constraints on length or degree of coiling of the intestine (Montgomery 1977). Thus, the short relative intestine lengths of dusky and threespot damselfish are better illustrated by comparisons with other herbivores of similar shape.…”

Section: Gut Morphology and Dietmentioning

confidence: 99%

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Gut characteristics and assimilation efficiencies in two species of herbivorous damselfishes (Pomacentridae: Stegastes dorsopunicans and S. planifrons)

Cleveland

Montgomery

2003

Marine Biology

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The morphological and physiological mechanisms by which marine herbivores assimilate energy and nutrients from primary producers and transfer them to higher trophic levels of reef ecosystems are poorly understood. Two wide-ranging Caribbean fishes, the dusky damselfish, Stegastes dorsopunicans, and the threespot damselfish, S. planifrons, defend territories on patch reefs in the Archipelago de San Blas, Republic of Panama. We examined how relative intestine length and retention time influence digestion and absorption of energy and nutrients in these fishes. The dusky damselfish has a relative intestine length (RIL=intestine length/standard length) of 1.2 and a Zihler index {ZI=intestine length (mm)/10[mass(g) 1/3 ]} of 3.4. These values are significantly lower (P RIL =P ZI <0.0001) than those for the threespot damselfish (3.0 and 8.2, respectively). Both RIL and ZI for both species fall well below previously published values for other herbivorous pomacentrids, and may reflect their primary food resource at San Blas (diatoms). Energy-rich diatoms may be easier to digest than refractory macroalgae characteristic of diets of many herbivorous fishes (RIL range: 2-20). Despite differences in RIL and ZI between these two species, gut retention time is the same (P>0.05) for both dusky (6.6 h) and threespot damselfish (6.5 h). Thus, food travels the length of the threespot damselfish intestine $2.5 times faster than it does in the dusky damselfish intestine. Levels of protein, carbohydrate, and lipid are significantly (0.003

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Vertebrate Gastrointestinal System

Karasov

Hume

1997

Comprehensive Physiology

107

137

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Diet and Gut Morphology in Fishes, with Special Reference to the Monkeyface Prickleback, Cebidichthys violaceus (Stichaeidae: Blennioidei)

Cited by 70 publications

References 0 publications

Intestine Morphometrics of Fishes: A Compilation and Analysis of Bibliographic Data

Intestine Morphometrics of Fishes: A Compilation and Analysis of Bibliographic Data

Gut characteristics and assimilation efficiencies in two species of herbivorous damselfishes (Pomacentridae: Stegastes dorsopunicans and S. planifrons)

Vertebrate Gastrointestinal System

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