Results 161 to 170 of about 7,835 (214)

Osteichthyes

2018
Jeffrey C Wolf, Alvin Camus, Michael J Kinsel   +2 more
exaly   +2 more sources

Agnata, Osteichthyes

2022
Definizione dello Status delle specie di Agnati e Osteitti in territorio ...
Nonnis Marzano F., Duchi A., Lorenzoni M., Pizzul E., Sabatini A., Tancioni L.   +5 more
openaire   +1 more source

Origin of Osteichthyes and Radiation of Actinopterygians

2022
This chapter covers the origin of Osteichthyes and the radiation of actinoptergians. It details the key differences between actinopterygians and sarcopterygians before turning to actinopterygian evolution, diversity, swimming, reproduction, and ecology.
F. Harvey Pough, William E. Bemis, Betty Mcguire, Christine M. Janis   +3 more
openaire   +1 more source

Cytogenetic Analysis of the Pufferfish Tetraodon Fluviatilis (Osteichthyes)

Chromosome Research, 2000
Because of their compact genome, pufferfish (Tetraodontiformes) have been proposed as a model for the study of the vertebrate genome. The genome of pufferfish is peculiar as it has the structural complexity of the genomes of higher vertebrates, but has small introns and lacks large clusters of highly repetitive sequences.
MANDRIOLI, Mauro, CUOGHI, Barbara, MARINI, Milena, MANICARDI, Gian Carlo   +3 more
openaire   +2 more sources

Agnatha, Osteichthyes.

2005
Dall'esame di 145 pubblicazioni riguardanti l'ittofauna delle acque dolci e salmastre italiane sono state tratte 15.300 segnalazioni poi archiviate nella banca dati faunistica del Servizo Conservazione Natura del Ministero Ambiente e Difesa del Territorio.Sulla tale base informativa è stato tracciato un quadro dell'attuale composizione e distribuzione
BOBBIO L., SALA, Luigi
openaire   +1 more source

Chromosome Cytology of the Osteichthyes

The Progressive Fish-Culturist, 1967
(1967). Chromosome Cytology of the Osteichthyes. The Progressive Fish-Culturist: Vol. 29, No. 2, pp. 75-83.
openaire   +1 more source

Myoglobin polymorphism in the pollan (Osteichthyes: Coregoninae)

Animal Blood Groups and Biochemical Genetics, 1975
SummaryThree electrophoretically separable phenotypes of heart and lateral line muscle myoglobin were found in the Irish pollan (Coregonus pollan). This polymorphism appears to be under the control of two co‐dominant alleles. The allele frequencies were found to be virtually identical in samples from two lakes which have probably been isolated since ...
openaire   +2 more sources

?? ?????????????? ???????????????????? ?? ?????????????????????? ???????????????? ???????? Perca (Osteichthyes, Percidae)

2023
Perea fluvialilis aucl. from the Pleistocene Eastern Europe (Likhvin) is identified with P. lepidosoma of the Miocene Western Siberia. Together with recent P. schrenkii of Balkhash lake they are assigned to the subgenus Dengizperca. Recent Euro-Asiatic and North-American perches are suggested to belong to the genus Perea s. str.
openaire   +1 more source

Karyotypes and nuclear DNA contents of Polypteridae (Osteichthyes)

Experientia, 1980
Calamoichthys calabaricus, Polypterus palmas, P. weeksii, P. delhezi and P. ornatipinnis have the same amount of DNA per erythrocyte nucleus. The karyotype of P. weeksii has 38 chromosomes and differs from the karyotypes of the other species, all with 36 chromosomes, by a Robertsonian chromosomal rearrangement.
openaire   +2 more sources

Osteichthyes: Immune Systems of Teleosts (Actinopterygii)

2018
Teleosts and elasmobranchs are the lowest vertebrates that possess adaptive immunity akin to mammalian ones. However, the fish immune system is different from that of mammals, that is, a lack of bone marrow, lymph nodes and germinal center. Their immune system is also characterized by the fact that their surface is covered by live cells with mucus in ...
Teruyuki Nakanishi, Jun-ichi Hikima, Takashi Yada   +2 more
openaire   +1 more source