Comparative morphology and development of bony elements in the head region in three species of Japanese catfishes (Silurus: Siluridae; Siluriformes)

Kobayakawa, Midori

doi:10.1007/bf02905631

Cited by 17 publications

(20 citation statements)

References 11 publications

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“…In Chrysichthys auratus, ossification of the skull begins with the dentaries, the operculars, and two pairs of branchiostegal rays, followed by the maxillaries and operculars (Vandewalle et al, 1995); the pharyngeal tooth plates do not appear until the next stage along with the first buccal teeth. In three Silurus species, the maxillaries and premaxillaries appear first (Kobayakawa, 1992). The pharyngeal jaws come first in Rutilus rutilus (after Hubendick, 1942).…”

Section: Osteocraniummentioning

confidence: 99%

“…The dentaries and maxillaries are particularly well developed. In H. longifilis, as in Silurus sp., Clarias gariepinus, and Chrysichthys auratus, the maxillary is placed, at the outset, at the base of the barbel as in the adult, and thus does not contribute to forming the contour of the mouth (David, 1936;Poll, 1942;Tilak, 1963;Schaefer, 1990;Surlemont & Vandewalle, 1991;Kobayakawa, 1992;Vandewalle et al, 1995). This means there is no transient primitive state where the premaxillaries and maxillaries are juxtaposed.…”

Section: Osteocraniummentioning

confidence: 99%

“…: (32) 43665040;fax: (32) 43665010;email: p.vandewalle@ulg.ac.bc. 1987;Surlemont & Vandewalle, 1991;Kobayakawa, 1992). Reports describing the close timing of the events that mark the postembryonic development of a teleost skull are rare (Vandewalle et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

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Postembryonic development of the cephalic region in Heterobranchus longifilis

Vandewalle

Gluckmann

Baras³

et al. 1997

Journal of Fish Biology

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At hatching, Heterobranchus longifilis does not display any primordia of the cephalic skeleton. The latter appears 12 h post-hatching and develops in three stages up to day 16. The first stage (12 h to 2 days) involves almost exclusively the development of the chondrocranium. During the second period (days 3-8), dermal elements of the splanchnocranium appear. The final stage is marked by resorption of the cartilages, progressively replaced by ossifications (days 10-16). At their appearance the elements of the splanchnocranium are fused together, as are the first neurocranial elements. Later, the splanchnocranium splits up. By the time the yolk sac is completely resorbed, the buccal and pharyngeal jaws are present, the suspensoria and hyoid bars are partially developed, and the parasphenoid partially closes the hypophyseal fenestra. These structures delimit a buccal cavity that is probably functional, i.e. capable of participating in the intake of exogenous food. Next to continue its development is principally the splanchnocranium, completing the walls of the buccal cavity. Cartilage resorption parallels the appearance of endochondral ossifications (except for the trabecular bars). Braincase closure begins to accelerate once the buccal system is complete. 1997 The Fisheries Society of the British Isles No cephalic skeletal structure is visible. Day 1The first cartilaginous structures have appeared [ Fig. 1(a)]. They all belong to the splanchnocranium. These structures are: the hyosymplectic, the interhyal, the hyoid bar, the pars quadrata of the palato-quadrate, and Meckel's cartilage.    

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Section: Osteocraniummentioning

confidence: 99%

Section: Osteocraniummentioning

confidence: 99%

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Postembryonic development of the cephalic region in Heterobranchus longifilis

Vandewalle

Gluckmann

Baras³

et al. 1997

Journal of Fish Biology

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“…Those studies dealing with the ontogeny of the skull, frequently focus on the development of the osteological components of the fish skull, with little or no attention paid to the relation with the chondrocranium (e.g. Kobayakawa, 1992;Vandewalle et al, 1995). A compilation of studies, made on the ontogeny of the cartilaginous skull of fishes, has been given by de Beer (1937) and Daget (1964).…”

Section: Introductionmentioning

confidence: 99%

The ontogeny of the chondrocranium in Clarias gariepinus: trends in siluroids

Adriaens

Verraes

1997

Journal of Fish Biology

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The ontogeny of the chondrocranium of 31 different stages of the African catfish Clarias gariepinus (Siluroidei: Clariidae) was studied, both from cleared and stained, and sectioned material. The fish ranged from 4.1 (1 day post‐hatching) to 127.0 mm SL (100 days post‐hatching). The chondrocranium of C. gariepinus seemed to correspond to the general adaptive trends in siluroids, especially in relation to the reduction of eye size and the dorso‐ventral flattening of the skull. The platybasic neurocranium involved several modifications related to the trabecular bars, the hypophyseal fenestra, the ethmoid region and even the olfactory nerves. Certain reductions were present, which have been observed in all siluroids (e.g. absence of the pila lateralis, the commissura lateralis, the myodomes) or are part of a variable trend within siluroids (e.g. reduction of the taenia marginalis anterior and the tectum synoticum). Compared with some other siluroid species, the neurocranium of C. gariepinus is well developed, for example in the otic region. The same was observed in the splanchnocranium where some general siluroid trends persist (e.g. isolation of palatine from pterygoquadrate, presence of ‘hyo‐symplectic‐pterygoquadrate’ plate). Some trends, as observed in other siluroids, were present also (e.g. interhyal continuous with suspensorium and ceratohyal, Meckel's cartilage initially continuous with the suspensorium). The branchial basket is well developed as all expected elements are present (basibranchials I‐IV, hypobranchials I‐IV, ceratobranchials I‐V, epibranchials I‐IV). Based on the observed ontogeny of C. gariepinus and data from the literature, a hypothesis was formulated which indicated the presence of a general reductional trend within siluroids. In C. gariepinus, all four (I‐IV) infrapharyngobranchials develop, although the anterior two are much reduced and fused with each other.

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“…Finding intraspecific variability in development in turn requires a large sample size, which is difficult or impractical to obtain in developmental studies of many organisms. Thus, in studies where the relative timing of developmental events is examined, typically a single, linear (with respect to time) developmental sequence is reported for a species (e.g., Trueb 1985;Arratia 1990Arratia , 1992Arratia andSchultze 1990, 1991;Kobayakawa 1992;Hanken et al 1992;Clark and Smith 1993;Smith 1997). Although the lack of reported variability may be due to small sample size, in a number of studies in which a moderate number of specimens have been examined (Hanken and Hall 1984Hall , 1988Hanken et al 1992), variability in ossification sequence appears to be low.…”

mentioning

confidence: 99%

An Experimental Study of Intraspecific Variation, Developmental Timing, and Heterochrony in Fishes

Mabee

Olmstead

Cubbage

2000

Evol

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Heterochrony is widely regarded as an important evolutionary mechanism, one that may underlie most, if not all, morphological evolution, yet relatively few studies have examined variation in the sequence of development. Even fewer studies have been designed so that intraspecific variation in the relative sequence of developmental events can be assessed, although this variation must be the basis for evolutionary change. Intraspecific variation in developmental ossification sequences was documented from the zebrafish (Danio rerio) by Cubbage and Mabee (1996) and from the Siamese fighting fish (Betta splendens) by Mabee and Trendler (1996), but a quantitative analysis of the patterns within this variation was not made. Here, we quantify the effect of rearing temperature on the sequence of ossification and characterize the levels and patterns of intraspecific variation in these fishes. For Danio, there were no temperature effects on the sequence of bone development across the cranium, cranial region development, cartilage versus dermal bones, or lateral line bone versus nonassociated bones. Likewise the level of variation in relative sequence (position) of ossification was low, about two ranks, across temperatures. At higher temperatures, we found higher levels of variation in iterated cranial bones and less in bones forming early in the sequence. No temperature effects on variation were found among regions, between lateral line-associated bones and nonassociated bones, between median and paired bones, or across the entire sequence, indicating concordant variability among the three temperatures. Individual bones with the highest levels of variability were not consistent among temperatures.Baseline patterns of intraspecific variation in Danio were compared to those of Betta. For both species, the level of intraspecific variation in sequence position was low and the variability of cranial bones was concordant. Individual bones with the highest levels of variability were not consistent between species. In both species, variation was widespread (distributed evenly across the sequence). We used comparisons (among regions, between dermal and cartilage bones, between lateral line-associated and other bones, between median and paired bones, between iterated and noniterated bones, between feeding-associated bones and others) to see which subsets were most variable and thus potentially useful in predicting high levels of evolutionary change. The only subset of bones that was significantly more variable than others was cartilage bones. If interspecific patterns are parallel to these intraspecific differences, cartilage bones would be expected to show higher levels of heterochrony. Although concordance across the cranial ossification sequence and among regions in Danio, Betta, and two other teleosts, Oryzias and Barbus, suggests an evolutionarily conserved pattern of ossification, identity in sequence position across taxa was not observed for any bone. Thus, variation existed in sequence position across temperatures and species....

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Comparative morphology and development of bony elements in the head region in three species of Japanese catfishes (Silurus: Siluridae; Siluriformes)

Cited by 17 publications

References 11 publications

Postembryonic development of the cephalic region in Heterobranchus longifilis

Postembryonic development of the cephalic region in Heterobranchus longifilis

The ontogeny of the chondrocranium in Clarias gariepinus: trends in siluroids

An Experimental Study of Intraspecific Variation, Developmental Timing, and Heterochrony in Fishes

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