Influence of Maternal Size on Offspring Traits in a Marine Gastropod with Direct Development and without Sibling Interaction

2021 ◽  
pp. 000-000
Author(s):  
María Soledad Avaca ◽  
Lorena Storero ◽  
Pablo Martín ◽  
Maite Narvarte
Keyword(s):  
Direct Development ◽  
Marine Gastropod ◽  
Maternal Size ◽  
Sibling Interaction

Invasion by the marine gastropod Ocinebrellus inornatus in France. II. Expansion along the Atlantic coast

2004 ◽  
Vol 273 ◽  
pp. 163-172 ◽  
Author(s):  
C Martel ◽  
F Viard ◽  
D Bourguet ◽  
P Garcia-Meunier
Keyword(s):  
Atlantic Coast ◽  
Marine Gastropod

Phylogeography of the Marine Gastropod Reticunassa festiva Complex (Nassariidae) in the Coast of China

2020 ◽  
Vol 39 (2) ◽  
pp. 419
Author(s):  
Yi Yang ◽  
Lu Qi ◽  
Lingfeng Kong ◽  
Qi Li
Keyword(s):  
Marine Gastropod

Lactation, maternal behavior and infant growth in common marmoset monkeys ( Callithrix jacchus ): effects of maternal size and litter size

2001 ◽  
Vol 51 (1) ◽  
pp. 17-25 ◽  
Author(s):  
Olav Oftedal ◽  
Rachel Power ◽  
Donna Layne ◽  
Suzette Tardif ◽  
Michael Power
Keyword(s):  
Litter Size ◽  
Maternal Behavior ◽  
Common Marmoset ◽  
Callithrix Jacchus ◽  
Infant Growth ◽  
Maternal Size ◽  
Marmoset Monkeys

scholarly journals The complete mitochondrial genome of a marine gastropod: Umbonium thomasi (Trochida, Trochidae)

2018 ◽  
Vol 4 (1) ◽  
pp. 37-38
Author(s):  
Hana Kim ◽  
Cheol Yu ◽  
Hyung June Kim ◽  
Yun-Hwan Jung
Keyword(s):  
Mitochondrial Genome ◽  
Complete Mitochondrial Genome ◽  
Marine Gastropod

The Reproductive Biology of Ophiacantha Bidentata (Echinodermata: Ophiuroidea) From The Rockall Trough

1982 ◽  
Vol 62 (1) ◽  
pp. 45-55 ◽  
Author(s):  
P. A. Tyler ◽  
J. D. Gage
Keyword(s):  
Reproductive Biology ◽  
Deep Water ◽  
Larval Stage ◽  
North Pacific ◽  
Deep Sea ◽  
Direct Development ◽  
The Arctic ◽  
Shallow Waters ◽  
Arctic Seas ◽  
Rockall Trough

INTRODUCTIONOphiacantha bidentata (Retzius) is a widespread arctic-boreal ophiuroid with a circumpolar distribution in the shallow waters of the Arctic seas and penetrating into the deep sea of the.North Atlantic and North Pacific (Mortensen, 1927, 1933a; D'yakonov, 1954). Early observations of this species were confined to defining zoogeo-graphical and taxonomic criteria including the separation of deep water specimens as the variety fraterna (Farran, 1912; Grieg, 1921; Mortensen, 1933a). Mortensen (1910) and Thorson (1936, pp. 18–26) noted the large eggs (o.8 mm diameter) in specimens from Greenland and Thorson (1936) proposed that this species had ‘big eggs rich in yolk, shed directly into the sea. Much reduced larval stage or direct development’. This evidence is supported by observations of O. bidentata from the White and Barents Seas (Semenova, Mileikovsky & Nesis, 1964; Kaufman, 1974)..

scholarly journals Enzymic degradation of keratosulphates

1970 ◽  
Vol 119 (1) ◽  
pp. 39-47 ◽  
Author(s):  
Michiko Nishida-Fukuda ◽  
Fujio Egami
Keyword(s):  
Column Chromatography ◽  
Liver Extract ◽  
Concerted Action ◽  
Sephadex Column ◽  
Marine Gastropod ◽  
Multienzyme System ◽  
Shark Cartilage

1. A multienzyme system capable of degrading keratosulphates to yield galactose, N-acetylglucosamine and sulphate was found in the liver extract of a marine gastropod, Charonia lampas. 2. During the degradation, neither oligosaccharides nor sulphated sugars were produced. 3. It is suggested that the degradation could be attributed to the concerted action of β-galactosidase, β-N-acetylglucosaminidase and a sulphatase (sulphohydrolase), tentatively designated keratosulphatase. 4. Two forms of keratosulphatase (I and II) were separated by DEAE-Sephadex column chromatography. Both forms could release all the sulphate from keratosulphates and neither appeared to be identical with glycosulphatase or chondrosulphatase, both of which are also present in Charonia lampas. 5. β-Galactosidase and β-N-acetylglucosaminidase could degrade keratopolysulphate to a greater extent in the presence of keratosulphatase than in its absence. 6. It is suggested that keratosulphate was first desulphated by the action of keratosulphatase, and the desulphated polymer was then degraded to galactose and N-acetylglucosamine by the action of β-galactosidase and β-N-acetylglucosaminidase. 7. β-Galactosidase alone released a small amount of galactose from shark cartilage keratopolysulphate, but β-N-acetylglucosaminidase alone did not release N-acetylglucosamine. This indicates that unsulphated galactose residues occupy all the non-reducing terminal positions in keratopolysulphate chains.

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