Effect of Temperature on Development Time in Egg Masses of the Intertidal Nudibranch, Dendronotus frondosus (Ascanius 1774) (Opisthobranchia, Dendronotacea)

2003 ◽  
Vol 10 (1) ◽  
pp. 17
Author(s):  
Janet L. Watt ◽  
Ronald B. Aiken
Keyword(s):  
Development Time ◽  
Effect Of Temperature ◽  
Egg Masses

Effect of temperature on the development time and life‐time fecundity of Trichopria anastrephae parasitizing Drosophila suzukii

2020 ◽  
Vol 144 (10) ◽  
pp. 857-865
Author(s):  
Julia G. A. Vieira ◽  
Alexandra P. Krüger ◽  
Tiago Scheuneumann ◽  
Amanda M. Garcez ◽  
Maira C. Morais ◽  
...  
Keyword(s):  
Development Time ◽  
Life Time ◽  
Effect Of Temperature ◽  
Drosophila Suzukii

Effect of temperature and inoculum size on reproduction and development of Heterorhabditis heliothidis and Steinernema glaseri (Nematoda: Rhabditoidea) in Galleria mellonella

1991 ◽  
Vol 69 (5) ◽  
pp. 1261-1264 ◽  
Author(s):  
S. Zervos ◽  
S. C. Johnson ◽  
J. M. Webster
Keyword(s):  
High Temperatures ◽  
Low Temperatures ◽  
Development Time ◽  
Galleria Mellonella ◽  
Inoculum Size ◽  
Effect Of Temperature ◽  
Inoculum Level ◽  
Steinernema Glaseri

Larvae of Galleria mellonella were kept at temperatures of 5, 10, 15, 20, 25, and 30 °C, and exposed to six levels of inocula (5, 10, 25, 50, 100, and 500 infective juveniles/larva) of Heterorhabditis heliothidis and Steinernema glaseri. Temperature and inoculum level significantly affected time to first emergence, duration of emergence, and yield of juveniles. All parameters except emergence of H. heliothidis showed significant interactions between temperature and inoculum level. No juveniles emerged at 5 or 10 °C and development time was most rapid at 25 °C. No juvenile H. heliothidis emerged at 30 °C or with 500 infective juveniles/host, but duration of emergence was shortest at high temperatures with large inocula; yield per host and yield per inoculum were greatest at 20 °C with small inocula. Yields of S. glaseri were half those of H. heliothidis; duration of emergence was shortest at low temperatures; yield per host was greatest at 20 and 25 °C from large inocula; and yield per inoculum level was greatest when the numbers inoculated were small (5–50/host).

Empirical analysis of the effect of temperature on marine harpacticoid copepod development time

1988 ◽  
Vol 66 (6) ◽  
pp. 1376-1381 ◽  
Author(s):  
Donald G. Webb ◽  
Timothy R. Parsons
Keyword(s):  
Development Time ◽  
Environmental Temperature ◽  
Harpacticoid Copepod ◽  
Effect Of Temperature ◽  
Data Set ◽  
Predictive Equations ◽  
Harpacticoid Copepods ◽  
Power Curves ◽  
Juvenile Development ◽  
Copepod Development

Predictive equations to estimate development time from environmental temperature for marine harpacticoid copepods were developed from data extracted from the literature. Separate equations were constructed for egg, nauplius, copepodite, and total juvenile development, as well as for generation time. Power curves adequately described the data and each regression was significant (P < 0.001). Approximately 50% of the variance in each data set was explained by regression on temperature. Predictions of development time generally were precise, with the upper 95% confidence limit 39–65% greater than the prediction at low temperatures (4–5 °C), 7–13% greater at mean temperatures (17.6–19.3 °C), and 13–31% greater at high temperatures (28–40 °C). Application of these predictive equations will facilitate analysis of the population dynamics and production of marine harpacticoid copepods.

EFFECT OF TEMPERATURE ON THE EMERGENCE OF OVERWINTERING PHYLLONORYCTER BLANCARDELLA (LEPIDOPTERA: GRACILLARIIDAE) AND ITS PARASITE APANTELES ORNIGIS (HYMENOPTERA: BRACONIDAE) IN NOVA SCOTIA

1983 ◽  
Vol 115 (9) ◽  
pp. 1203-1208 ◽  
Author(s):  
H. J. Herbert ◽  
K. B. McRae
Keyword(s):  
Nova Scotia ◽  
Development Time ◽  
Adult Emergence ◽  
Management Program ◽  
Effect Of Temperature ◽  
Pupal Development ◽  
Temperature Regimes ◽  
Phyllonorycter Blancardella ◽  
The Difference ◽  
Threshold Of Development

AbstractAdult emergence of the spotted tentiform leafminer, Phyllonorycter blancardella (F.), and its primary endoparasite, Apanteles ornigis Weed, from overwintering pupae was studied at five constant temperatures. Days to 50% emergence for P. blancardella were 55.4, 24.4, 14.4, 10.8, and 8.3 and for A. ornigis were ∞, 47.8, 25.6, 17.6, and 15.1 at 8°, 12°, 16°, 20°, and 24 °C, respectively. The rate of pupal development was approximately a linear function of temperature for P. blancardella but was nonlinear for A. ornigis. The threshold of development, estimated from the 50% emergence data, was 4.4 ±.33 °C for the host and 9.6 ±.50 °C for the parasite. The development time for the host was approximately one half that for the parasite at temperatures 12°–24 °C. The difference in emergence dates between host and parasite under normal Nova Scotia conditions was predicted to be 35 days. The timing of chemical controls in an integrated pest management program could be predicted from the accumulation of daily development units based on the power function for both species, provided a field study is undertaken to confirm the extrapolation to diurnal temperature regimes.

scholarly journals Experimental study of the dependence of embryonic development of Trachurus trachurus eggs on temperature

2007 ◽  
Vol 65 (1) ◽  
pp. 17-24 ◽  
Author(s):  
M. Emília Cunha ◽  
Catarina Vendrell ◽  
Patrícia Gonçalves
Keyword(s):  
Experimental Study ◽  
Embryonic Development ◽  
Development Time ◽  
Incubation Temperature ◽  
Effect Of Temperature ◽  
Trachurus Trachurus ◽  
Sea Temperature ◽  
Stage 4 ◽  
Embryonic Shield ◽  
Lower Temperature

Abstract Cunha, M. E., Vendrell, C., and Gonçalves, P. 2008. Experimental study of the dependence of embryonic development of Trachurus trachurus eggs on temperature. – ICES Journal of Marine Science, 65: 17–24. To determine the effect of temperature on the development rates of artificially fertilized eggs of Trachurus trachurus, experiments were carried out at temperatures ranging from 10.5°C to 19°C. Egg development through to hatching only took place at 11.7–19°C. At lower temperature, eggs did not develop beyond the stage where the outline of the embryo was clearly discernible and a defined median line of the embryonic shield (stage 4 in this study) was apparent. Development time took from 46 h at 19°C to 126 h at 12°C. A generalized linear model of the stage-dependent development time (age) as a function of incubation temperature was developed. The data are also compared with those reported in the literature and related to sea temperature on the spawning grounds.

Effect of temperature on the development, oviposition, and mortality of Tribolium audax Halstead and Tribolium madens (Charpentier) (Coleoptera: Tenebrionidae)

1991 ◽  
Vol 69 (5) ◽  
pp. 1189-1193 ◽  
Author(s):  
L. B. Smith ◽  
P. S. Barker
Keyword(s):  
Development Time ◽  
Adult Stage ◽  
Adult Emergence ◽  
Oviposition Period ◽  
Effect Of Temperature ◽  
Complete Development ◽  
Development Times ◽  
The Mean ◽  
Pupal Mortality ◽  
Coleoptera Tenebrionidae

The effect of temperature on development time, oviposition, and mortality of the sibling species Tribolium audax Halstead and Tribolium madens (Charpentier) was investigated in the laboratory. The mean development times of T. madens, not including slow-developing larvae, ranged from 54 days at 25 °C and 75% RH to 24 days at 35 °C and 75% RH. The corresponding mean development times for T. audax were 50.5–27.4 days. At 25 °C and below, the larvae of each species separated into two groups, one continuing to the adult stage and the other entering a resting stage. The resting stage could not be broken by a period of 2 weeks at −5 °C. The slow-developing larvae required 4 to 5 times as long to complete their development as those that developed rapidly. Slow-developing larvae of T. madens that had been at 17.5 °C and 75% RH for 658 days, and of T. audax that had been in the same conditions for 908 days, could complete development when placed at 27.5 °C and 75% RH. Peak oviposition for T. madens occurred at 17 weeks after adult emergence at both 27.5 and 30 °C; the total oviposition period was 47 weeks at 30 °C and 60 weeks at 27.5 °C. Peak oviposition for T. audax occurred at 6 weeks at both 27.5 and 30 °C; the total oviposition period was 36 weeks at 30 °C and 59 weeks at 27.5 °C. Larval and pupal mortality was low at 25 °C or above in T. madens and T. audax. Below 25 °C the survival rate of T. madens was somewhat higher than that for T. audax.

Sign in / Sign up

Export Citation Format

Share Document