Results 141 to 150 of about 1,879 (181)

Histoire naturelle des quadrupèdes-ovipares

openaire   +2 more sources

The archaeal class <i>Nitrososphaeria</i> is a key component of the reproductive microbiome in sponges during gametogenesis. [PDF]

mBio
Turon M, Koutsouveli V, Conejero M, Taboada S, Verdes A, Lorente-Sorolla JM, Díez-Vives C, Riesgo A.   +7 more
europepmc   +1 more source

Uncovering developmental diversity in the field.

Development
Brown FD, Ishengoma E, Mayer G, Pabón-Mora N, Santos ME, Sears KE, de Sena Oliveira I.   +6 more
europepmc   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Internal Fertilization in an Oviparous Frog

Science, 1981
Eleutherodactylus coqui , an oviparous frog, undergoes internal fertilization. If this mode of fertilization occurs in other species of anurans, interpretations of anuran reproductive strategies based on the assumption of external fertilization must be reviewed.
D S, Townsend, M M, Stewart, F H, Pough, P F, Brussard   +3 more
openaire   +2 more sources

Yolk utilization in Scyliorhinus canicula, an oviparous dogfish

Environmental Biology of Fishes, 1993
Using plastic embedding techniques and semithin sections, in order to overcome the difficult sectioning of yolky eggs, we have been able to carry out histological study of the external yolksac from fertilization until birth in the oviparous dogfish Scyliorhinus canicula.
Henri Lechenault, Francine Wrisez, Jean Mellinger   +2 more
openaire   +1 more source

Oviposition Cycle in the Oviparous Fish Xenopoecilus sarasinorum

Zoological Science, 2007
To clarify the reproduction of the oviparous teleost Xenopoecilus sarasinorum, changes in oocyte composition and oviposition cycle were investigated. After release, a batch of spawned eggs hung from the urogenital pore by attaching filaments (36.3+/-0.8 in number, n=31; about 4.3-7.8 mm in length, 5-8 microm in diameter) on the chorion (egg envelope ...
Takashi, Iwamatsu, Hirokuni, Kobayashi, Yasushi, Shibata, Masahiro, Sato, Nobuyoshi, Tsuji, Ken-Ichi, Takakura   +5 more
openaire   +2 more sources

Oviparity in Littorina saxatilis (Olivi)

Nature, 1947
It has always been believed in the past that all the sub-species and varieties ascribed to Littorina saxatilis (Olivi)1 are viviparous. Contrary to this, it has now been observed that some of these reproduce very much like L. littoralis (L.) by means of gelatinous egg masses2.
openaire   +2 more sources

Milk provisioning in oviparous caecilian amphibians

Science
Among vertebrates, the yolk is commonly the only form of nutritional investment offered by the female to the embryo. Some species, however, have developed parental care behaviors associated with specialized food provisioning essential for offspring survival, such as the production of lipidic-rich parental milk in mammals.
Pedro L. Mailho-Fontana, Marta M. Antoniazzi, Guilherme R. Coelho, Daniel C. Pimenta, Lígia P. Fernandes, Alexander Kupfer, Edmund D. Brodie, Carlos Jared   +7 more
openaire   +2 more sources

Biotin-binding proteins in eggs of oviparous vertebrates

Experientia, 1981
Biotin-binding was found in the egg whites and yolks of all 23 avian species studied, and in a turtle, but the amount varied considerably even in related species. There was no clear correlation in biotin-binding between egg white and yolk in various species.
J K, Korpela, M S, Kulomaa, H A, Elo, P J, Tuohimaa   +3 more
openaire   +2 more sources

Oviparity or viviparity? That is the question…

Reproductive Biology, 2012
The modes of reproduction undoubtedly represent one of the most critical life-history traits because they profoundly affect fitness and survival. The parent-offspring conflict over the degree of parental investment may be the main selective factor in the evolution of reproduction.
openaire   +4 more sources