Micropyle of some salmonins and coregonins

Riehl, R.

doi:10.1007/bf00000950

Cited by 43 publications

(16 citation statements)

References 4 publications

(4 reference statements)

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“…The ultrastructure of the micropylar canals, as well as the diameters of the micropyles, were the most significant characters for distinguishing between E. malabaricus and E. coioides. This is also consistent with the observation that while the outer surface of the zona radiata may be useful for distinguishing among fishes from different families or orders, the ultrastructural features of the micropyle can serve as taxonomic characters that are species-specific (Riehl & Schulte, 1978;Riehl, 1980Riehl, , 1993.…”

Section: Discussionsupporting

confidence: 83%

Comparative ultrastructural studies of the zona radiata of marine fish eggs in three genera in Perciformes

Yang

2000

Journal of Fish Biology

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The eggs of Mugil cephalus were significantly larger than those of Epinephelus malabaricus, and E. coioides, while those of Sciaenops ocellatus were intermediate between E. coioides and M. cephalus. The distribution density of pores in the egg envelope of S. ocellatus was significantly different from that of E. malabaricus and E. coioides. The micropyle diameters were significantly different in the four species. The ultrastructure of the zona radiata surface, the distribution density of pores and the size of eggs were also useful characters for distinguishing among the four species, but the ultrastructural features of the micropyles were the most important of all for egg identification. 2000 The Fisheries Society of the British Isles

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Section: Discussionsupporting

confidence: 83%

Comparative ultrastructural studies of the zona radiata of marine fish eggs in three genera in Perciformes

Yang

2000

Journal of Fish Biology

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“…During oogenesis glucose and amino acids are incorporated in developing oocytes via the follicular epithelium (Riehl, 1978;Nagahama, 1983;Guraya, 1986) (Nomura, 1964;Matsubara et al, 1985) and a positive influence on sperm motility was also discussed (Yoshida and Nomura, 1972 Oshiro and Hibiya, 1982;Berndtson and Goetz, 1990) and may be liberated during this process. They also occur in the multivesicular bodies of the oocytes (Sire et al, 1994 Riehl (1980) found the micropylar structure to be a species-specific characteristic in salmonid eggs.…”

Section: Organic Components Metabolitesmentioning

confidence: 97%

Composition of the ovarian fluid in 4 salmonid species: Oncorhynchus mykiss, Salmo trutta f lacustris, Saivelinus alpinus and Hucho hucho

Lahnsteiner¹,

Weismann²,

Patzner³

1995

Reprod. Nutr. Dev.

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Summary ― The ovarian fluid of rainbow trout (Oncorhynchus mykiss), charr (Salvelinus alpinus), lake trout (Salmo trutta f lacustris) and Danube salmon (Hucho hucho) was analyzed for its inorganic and organic composition. The qualitative composition of the ovarian fluid of the investigated species was similar, but significant quantitative differences were found. The following components were determined: sodium 106.6-142.2 mmol/I, potassium 1.7-2.7 mmol/I, calcium 0.45-0.61 mmola, osmolality 256.4-291.6 mosmol/kg, pH 8.4-8.8, glucose 1 698-4 195 wmol/I, fructose 17-399 pmol/I, lactate 34-227 gmol/l, cholesterol 650-1 230 pmolfl, phosphatidylcholine 0.25-3.0 pmoUl, lysophosphatidylcholine 10-100 Jl mol/l, choline 0-1.1 pmol/I, protein 95.0-278.4 mg/100 ml. Arginine, cystine, glycine, histidine, lysine, proline, serine, tyrosine and valine were the free amino acids occurring in concentrations of more than 10 0 pmolfl. Activities of alkaline phosphatase (200-6 000 pmol substrate/I/h), lactate dehydrogenase (9-690 gmol substrate/I/h), p-D -giucuronidase (70-410 pmol substrate/I/h), proteases pmolfl, fructose 17-399 pmolfl, lactate 34-227 pmolfl, cholesterol 650-1230 pmolfl, phosphatidylcholine 0,25-3,0 pmolll, lysophosphatidylcholine 10-100 pmol/1, choline 0-1,1 1 gmoili, protéines 95,4-278,4 mgl100 mL Arginine, cystine, glycine, histidine, lysine, proline, sérine, tyrosine et valine étaient les acides aminés libres dont la concentration excédait 10 pmolll. Des activités phosphatase alcaline (200-6000 pmol substratlllh), lactate déhydrogénase (9-690 gmoi substratlilh), /3-o-glucuronidase (70-410 0 pmol substrat/I/h), protéases (140-215 gmoilllh avec le collagène, 25-90 pmollllh avec la gélatine) et phosphatase acide (100-130 pmol subsiratlllh) étaient détectables, mais la glucose-6-phosphate déhydrogénase et l'a-glucosidase étaient absentes.

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“…The micropyle and surface pattern of fish eggs are important characteristic criteria for identification of different teleosts (Riehl & Schulte 1978, Riehl 1980, Riehl & Koleoscha 1993, Chen et al 1999, Vorobyeva & Markov 1999, Breining & Britz 2000. Shape, number, size of micropyle and also reinforcement type in the micropyle canal; the diameter, number, and arrangement of the accessory openings; the modes of egg attachment to the substrate and the thickness of the membrane have been used for taxonomic purpose (Riehl 1993, Giulianini et al 1994, Chen et al 1999, Li et al 2000, Bless & Riehl 2002.…”

Section: Introductionmentioning

confidence: 99%

Ultrastructural features of the egg envelope of silver carp, Hypophthalmichthys molitrix (Osteichthyes, Cyprinidae)

Esmaeili

Johal

2005

Environ Biol Fish

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SynopsisWe investigated the ultrastructure of the egg membrane surface (unfertilized egg) of Hypophthalmichthys molitrix using scanning electron microscopy. The eggs of silver carp like most other teleosts are surrounded by a relatively thick egg membrane, and have a type III micropyle at the animal pole. The micropyle is almost circular in shape and the micropyle canal is located in its center. The micropyle region is not flat. Round or oval accessory pores are also observed in the canal. The surface of zona radiata is wavy and uneven with a uniform distribution of almost round pores with lips. Microvilli like structure are found in the pore opening region.

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Micropyle of some salmonins and coregonins

Cited by 43 publications

References 4 publications

Comparative ultrastructural studies of the zona radiata of marine fish eggs in three genera in Perciformes

Comparative ultrastructural studies of the zona radiata of marine fish eggs in three genera in Perciformes

Composition of the ovarian fluid in 4 salmonid species: Oncorhynchus mykiss, Salmo trutta f lacustris, Saivelinus alpinus and Hucho hucho

Ultrastructural features of the egg envelope of silver carp, Hypophthalmichthys molitrix (Osteichthyes, Cyprinidae)

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