THE EFFECT OF TEMPERATURE CONDITIONS ON EMBRYONIC AND LARVAL DEVELOPMENT OF THE CAUCASIAN BROWN FROG, RANA MACROCNEMIS BOULENGER, 1885 IN CAPTIVITY

AbstractWe provide the first description of development for a species belonging to Odontophrynus genus by describing all external changes of embryonic and larval stages for Odontophrynus cordobae. External morphological changes through development were analyzed on specimens bred in captivity. Embryonic and larval development, from fertilization to metamorphosis, was completed in 62 days and 46 stages were defined. We split the staging series into ten developmental groups: fertilization (stages 1 and 2); segmentation (stages 3–9); gastrulation (stages 10–12); neurulation (stages 13–16); elongation (stages 17–19); external gill larva (stages 20–24); internal gill larva (stage 25); pre-metamorphosis (stages 26–41); pro-metamorphosis (stage 42); metamorphic climax (stages 43–46). Marked increases in total length were evidenced during elongation and during stage 25, when the tadpole begins to feed. Stage 25 was the longest one (8 days) and it was related to organs rearrangement, morphological progression and body mass increment typical of free life larval form. Similar studies on related species are needed to compare different developmental stages at different taxonomic levels.

Download Full-text

Induced Ovulation, Embryonic and Larval Development of Malaysian Mahseer, Tor tambroides (Bleeker, 1854) in Captivity

Asian Journal of Animal and Veterinary Advances ◽

10.3923/ajava.2013.761.774 ◽

2013 ◽

Vol 8 (6) ◽

pp. 761-774 ◽

Cited By ~ 2

Author(s):

N.M. Azuadi ◽

S.S. Siraj ◽

S.K. Daud ◽

A. Christianu ◽

S.A. Harmin ◽

...

Keyword(s):

Larval Development ◽

Induced Ovulation ◽

In Captivity ◽

Embryonic And Larval Development

Download Full-text

Effect of temperature on embryonic and larval development of bream (

Aquatic Sciences ◽

10.1007/s000270050009 ◽

1997 ◽

Vol 59 (3) ◽

pp. 214 ◽

Cited By ~ 4

Author(s):

Dariusz Kucharczyk ◽

Miroslaw Luczynski ◽

Roman Kujawa ◽

Piotr Czerkies

Keyword(s):

Larval Development ◽

Effect Of Temperature ◽

Embryonic And Larval Development

Download Full-text

Effect of temperature during embryonic development and first feeding of Trichogaster leeri larvae

Zygote ◽

10.1017/s0967199416000046 ◽

2016 ◽

Vol 24 (5) ◽

pp. 733-741

Author(s):

Samuel Louzada Pereira ◽

Dalcio Ricardo de Andrade ◽

Marcella Costa Radael ◽

João Carlos Fosse Filho ◽

Rafael Vieira de Azevedo ◽

...

Keyword(s):

Embryonic Development ◽

Water Temperature ◽

Larval Development ◽

Environmental Factor ◽

Effect Of Temperature ◽

Hatching Rate ◽

Egg Incubation ◽

First Feeding ◽

Incubation Temperatures ◽

Embryonic And Larval Development

SummaryTemperature is an environmental factor that influences the development of fish, and when changed abruptly can lead to high mortality. Some species of fish are influenced by this factor, exhibiting a longer time for embryonic development and time to first feeding. This study aims to evaluate the effect of water temperature on embryonic and larval development up to first feeding, to describe the time in hours post fertilization (hpf) of the emergence of different structures and to determine the best hatching rate and survival of animals under different treatments. Five different egg incubation temperatures were used (24, 26, 28, 30 or 32°C, respectively). The eggs were observed at regular intervals of 30 min up to 24 h, every 2 h until 48 h and every 4 h until the display of first feeding in all treatments. Embryonic development was longer for eggs incubated at 24°C and the best results for hatching rate and survival of spawning efficiency were at 28°C. We recommend that incubation of Trichogaster leeri eggs is carried out at 28°C up to the first feeding of larvae.

Download Full-text