Mouth Allometry and Feeding Habits of Some Mediterranean Fishes

Karachle, Paraskevi K.; Στεργίου, Κωνσταντίνος Ι.

doi:10.3750/aip2011.41.4.02

Cited by 25 publications

(24 citation statements)

References 30 publications

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“…it allows the detection of morphologic changes in shape, which is the basic hypothesis in the study of morphometrics (Lleonart et al 2002) 2. in contrast with the other types of models, the allometric one is the only one for which when X=0, then Y=0, a fact that is meaningful in morphometrics (Lleonart et al 2002), and 3. especially in the case of feeding related characteristics, it is the only one that can explain changes in the morphology such as required for a growing fish to meet its increasing energetic demands, while the energy spent for the acquisition of food is minimized (Karachle & Stergiou 2010b, 2011a.…”

Section: Methodsmentioning

confidence: 99%

“…The relationships of mouth area (MA) with total body length (TL), which are given in Karpouzi & Stergiou (2003) and Karachle & Stergiou (2011a), were used. They were again grouped according to FTGs and habitat type (see section 2.1).…”

Section: Mouth Characteristicsmentioning

confidence: 99%

“…Number of species per functional trophic group and habitat, for which weight (W), mouth area (MA) and intestine length (GL) relationships with body length were retrieved from the literature (W: Karachle & Stergiou (2008b); MA: Karpouzi & Stergiou (2003) and Karachle & Stergiou (2011a); GL: Karachle & Stergiou (2010a, b)). …”

Section: Weight-length Relationshipsmentioning

confidence: 99%

“…Only benthopelagic species seemed to largely differentiate from the remaining three habitatrelated groups, at lengths >20cm. Regressions between total length and mouth area based on literature data for 68 fish species (from Karpouzi & Stergiou (2003) and Karachle & Stergiou (2011a)) grouped by: (a) functional trophic group, as identified by Stergiou & Karpouzi (2002), and (b) habitat type. OV: omnivores with preference to vegetable material; OA: omnivores with preference to animal material; CD: carnivores with preference to decapods and fish; CC: carnivores with preference to fish and cephalopods; P: pelagic; BP: benthopelagic; D: demersal; RA: reef-associated.…”

Section: Mouth Characteristicsmentioning

confidence: 99%

“…In recent years, attempts have been made to relate other morphological characteristics of fishes, such as mouth (e.g., Karpouzi & Stergiou 2003, Chalkia & Bobori 2006, Karachle & Stergiou 2011a, intestine (e.g., Kramer & Bryant 1995a, b, Karachle & Stergiou 2010) and tail (Karachle & Stergiou 2004), to TL, and as well as to feeding habits and fractional trophic Intestine (or gut) length (GL) is considered to be an indicator of diet (Kramer & Bryant 1995a) and, particularly in fishes, can be used for interspecific dietary comparisons (e.g., AlHussaini 1947, Karachle & Stergiou 2010a). For a given body length, intestine in herbivorous species is longer than in omnivorous ones, and in omnivorous species longer than in carnivorous ones (e.g., Kapoor et al 1975, Kramer & Bryant 1995b, Karachle & Stergiou 2010a.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Morphometrics and Allometry in Fishes

Karachle¹,

Στεργίου²

2012

Morphometrics

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Section: Methodsmentioning

confidence: 99%

Section: Mouth Characteristicsmentioning

confidence: 99%

Section: Weight-length Relationshipsmentioning

confidence: 99%

Section: Mouth Characteristicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Morphometrics and Allometry in Fishes

Karachle¹,

Στεργίου²

2012

Morphometrics

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Understanding the relative roles of local environmental, geo‐climatic and spatial factors for taxonomic, functional and phylogenetic β‐diversity of stream fishes in a large basin, Northeast China

Zhang

Wang

et al. 2022

Ecology and Evolution

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The primary objective of this study was to determine the relative roles of local environmental ( Local ), geo‐climatic ( Geo ), and spatial ( Spatial ) factors to taxonomic, functional, and phylogenetic β ‐diversity of stream fish in a large basin in Northeast China. We quantified the current biodiversity patterns of fish communities in the Hun‐Tai River using β ‐diversity. We assessed (i) corresponding contributions of turnover and nestedness within the taxonomic, functional, and phylogenetic β ‐diversity of fishes; (ii) correlations among β ‐diversity facets (i.e., taxonomic, functional, and phylogenetic facets); (iii) relative contributions of Local , Geo , and Spatial factors to β ‐diversity. We collected fish communities from 171 sampling sites. Mantel tests were used to examine the correlation of three facets of β ‐diversity and their components (i.e., total, nestedness, and turnover). Distance‐based redundancy analysis and variation partitioning assess the relative contributions of Local , Geo , and Spatial factors to β ‐diversity. We found that turnover is the main driving mechanism for β ‐diversity in fish. Among the facets of β ‐diversity, taxonomic and phylogenetic facets have strong ecological information association. Spatial factors have a general contribution to various facets of β ‐diversity and its components. From aspects of fish β ‐diversity conservation, connectivity and habitat heterogeneity need to be maintained in the entire aquatic environment. In addition, protecting taxonomic β ‐diversity is helpful for maintaining phylogenetic β ‐diversity.

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Negative allometric growth during ontogeny in the large pelagic filter-feeding basking shark

et al. 2019

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Many pelagic shark species change body and fin shape isometrically or by positive allometry during ontogeny. But some large apex predators such as the white shark Carcharodon carcharias or the tiger shark Galeocerdo cuvier show distinct negative allometry, especially in traits related to feeding (head) or propulsion (caudal fin). In particular, changes in propulsion are attributed to a shift in swimming mode. The more heterocercal caudal fin of younger individuals with its large caudal fin span seemingly aids in hunting small, agile prey. In contrast, the less heterocercal caudal fin with a larger fin area in larger individuals aids a long-distance slow swimming mode. We were interested if negative allometric effects can be observed in a planktivorous shark, the basking shark Cetorhinus maximus, a large species adapted to long-distance slow swimming. To address this question, we compared three size classes, specifically < 260 cm (juveniles), 299-490 cm (subadults), and from adults > 541 cm total length. Comparing literature data, we found negative allometric growth of the head and of the caudal fin, but a more rapid decrease of relative caudal fin size than of relative head length. Hereby, we provide the first evidence for early negative allometric growth of the caudal fin in a large pelagic filter-feeding shark. Our study further demonstrates that ecomorphological approaches may add valuable insight into the life history of animals that are challenging to study in their natural habitat, including large roving sharks such as the basking shark.

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Mouth Allometry and Feeding Habits of Some Mediterranean Fishes

Cited by 25 publications

References 30 publications

Morphometrics and Allometry in Fishes

Morphometrics and Allometry in Fishes

Understanding the relative roles of local environmental, geo‐climatic and spatial factors for taxonomic, functional and phylogenetic β‐diversity of stream fishes in a large basin, Northeast China

Negative allometric growth during ontogeny in the large pelagic filter-feeding basking shark

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