Scale morphology in Malawian cichlids

Kuusipalo, Liisa

doi:10.1006/jfbi.1997.0623

Cited by 11 publications

(15 citation statements)

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“…Lepidological observations using light microscopy were performed following the methods of Takagi (1953), Roberts (1993), Lippitsch (1993), Kuusipalo (1998, 2000) and Jawad (2005 a , b ). For the purpose of this study, the fish body was divided into eight regions (Fig.…”

Section: Methodsmentioning

confidence: 99%

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Scale morphology of greater lizardfish Saurida tumbil (Bloch, 1795) (Pisces: Synodontidae)

Jawad¹,

Jufaili²

2007

Journal of Fish Biology

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A comparative study comprising scale morphology and squamation of Saurida tumbil was conducted to identify the most useful scale and squamation characters within the different body regions and length groups and to clarify their significance for future systematic studies. The presence of the caudal pores is documented for the first time in teleosts. In addition, the presence of crenae and spines formed by posterior orientation and projection of circuli is recorded for the first time in a member of the Synodontidae. Scales of S. tumbil show some characters that are either never seen or they are exceedingly rare in scales of other teleosts. These are: two types of scalar denticles, denticles in the inter-circular area, and twin or Siamese scales. Several other scale characters have shown a consistent variation in different body regions and in fishes from different length groups. These are: focus position; bilobate rostral field edge; presence of three radii; long, narrow and separated crenae; papillae-form, crowded scalar denticles with posterior directed spines; the number of scale rows between anterior end of the dorsal fin and the lateral line.

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Section: Methodsmentioning

confidence: 99%

“…The squamation pattern was recorded following Lippitsch (1990, 1992). SEM was used to investigate scale ultrastructure following Lanzing & Higginbotham (1974), Lippitsch (1992), Roberts (1993), Kuusipalo (1998) and Jawad (2005 a , b ). Scales to be used for SEM were air‐dried and mounted on an aluminium stub using double‐sided carbon tape.…”

Section: Methodsmentioning

confidence: 99%

Scale morphology of greater lizardfish Saurida tumbil (Bloch, 1795) (Pisces: Synodontidae)

Jawad¹,

Jufaili²

2007

Journal of Fish Biology

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“…Scanning electron microscopy was used to investigate scale ultrastructure following the methods of Lanzing & Higginbotham (1974), Lippitsch (1992), Roberts (1993), and Kuusipalo (1998). The scales to be used for SEM were air-dried and mounted on aluminium specimen stubs using double-sided sticky tape.…”

Section: Methodsmentioning

confidence: 99%

“…This included the description of scale distribution over different parts of the body. A lepidological study using light microscopy was performed following the methods of Takagi (1953), Roberts (1993), Lippitsch (1993), and Kuusipalo (1998). The scales were removed from each region using forceps and bleached in 1% KOH solution.…”

Section: Methodsmentioning

confidence: 99%

Matanui,a new genus of deepwater triplefin fishes (Pisces: Tripterygiidae) from New Zealand

Jawad

Clements

2004

Journal of the Royal Society of New Zealand

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Matanui new genus is proposed for two New Zealand species, Forsterygion bathytaton Hardy, 1989 and F. profundum Fricke and Roberts, 1994, which are redescribed. Matanui differs uniquely from other tripterygiid genera in having lateral line scales with a notch at the upper posterior corner, two procurrent rays between the posterior epural and 5th hypural bone (HU5), one procurrent ray anterior to haemal spine of the 3rd preural vertebra (PU3), dorsal fin formula IV-1N-0-1 -0-1, pterygiophores of the first three segmented anal fin rays anterior to the haemal spine of the first caudal vertebra, the urohyal triangular ventrally with a narrow posterior end, suborbital sensory canal not extending over premaxilla, supratemporal canals not meeting mid-dorsally, and large sensory pores. The genus is endemic to New Zealand, occurring in continental shelf waters from 12 to 550 m.

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“…The morphology of the scales and in particular the ornamentation of their outer surface (circuli, lepidonts, tubercles, spines, cteni) has been examined by various authors in studies on taxonomy and on the evolution of the Teleostea (De Lamater & Courtenay 1973;Hollander 1986;Roberts 1993;Mekkawy et al 1999;Miranda & Escala 2000;Sire & Arnulf 2000;Kaur & Dua 2004;Jawad 2005). Lippitsch (1990Lippitsch ( , 1992Lippitsch ( , 1993Lippitsch ( , 1995 and Kuusipalo (1998Kuusipalo ( , 2000 showed that in cichlids the morphology of scales and the characteristics of their distribution were useful in the investigation of phyletic relationships. Jawad and Al-Jufaili (2007) recently carried out a comparative study on scale morphology and squamation of Saurida tumbil (Bloch, 1795) to identify the most useful characters for future systematic studies.…”

Section: Introductionmentioning

confidence: 99%

Morphology of scale lepidonts in the genusAphanius(Teleostei, Cyprinodontidae) using SEM

Ferrito

Pappalardo

Fruciano

et al. 2009

Italian Journal of Zoology

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The microstructure of the anterior region of the scales in several species of the genus Aphanius was studied by SEM with the aim of determining whether scale morphology could be used to discriminate between the species of this genus. The characters examined concern the morphology of lepidonts, or ''scale-teeth'', their distribution and mode of implantation on the circuli. These characters were also subjected to UPGMA cluster analysis. Results from phenetic analysis of scale-teeth characters agree overall with those of previously published morphological and biogeographical studies and in part with molecular analysis of the phylogenetic relationships between species of Aphanius. An affinity between A. danfordii and A. mento (found previously in studies based on osteological observations) was seen. The separation of A. apodus from the other species of the fasciatus group, which had also been noticed from molecular observations, was also observed, as well as the affinity of A. ginaonis with the group of A. dispar+A. sirhani. This study demonstrates that scale morphology can provide useful information on the relationships among species of the genus Aphanius encouraging the use of scale characters, combined with other traits, in phylogenetic analyses.

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Scale morphology in Malawian cichlids

Cited by 11 publications

References 0 publications

Scale morphology of greater lizardfish Saurida tumbil (Bloch, 1795) (Pisces: Synodontidae)

Scale morphology of greater lizardfish Saurida tumbil (Bloch, 1795) (Pisces: Synodontidae)

Matanui,a new genus of deepwater triplefin fishes (Pisces: Tripterygiidae) from New Zealand

Morphology of scale lepidonts in the genusAphanius(Teleostei, Cyprinodontidae) using SEM

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