Effects of water temperature on the larval parasitic stage of the thick-shelled river mussel(Unio crassus)

The preliminary estimation of composition and structure of diatoms in the benthos of the Oka River allowed to determine the clear spatiotemporal confinedness of structure in such communities of them which has the most diverse composition in the low water period while water temperature decreasing.

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Incubation Temperature Influences the Duration of Egg Hatching and Early Development in the Boreal Digging Frog, Kaloula Borealis

Journal of Zoo Biology ◽

10.33687/zoobiol.003.01.2267 ◽

2020 ◽

Vol 3 (1) ◽

pp. ACCEPTED

Author(s):

Rho-Jeong Rae

Keyword(s):

Water Temperature ◽

Early Life ◽

Rainy Season ◽

Incubation Temperature ◽

Life Stages ◽

Early Life Stages ◽

Egg Hatching ◽

Significant Difference ◽

The Mean ◽

Hatching Rates

This study investigated the boreal digging frog, Kaloula borealis, to determine the egg hatching period and whether the hatching period is affected by incubation temperature. The results of this study showed that all the eggs hatched within 48 h after spawning, with 28.1% (±10.8, n=52) hatching within 24 h and 99.9% (±0.23, n=49) within 48 h after spawning. A significant difference was noted in the mean hatching proportion of tadpoles at different water temperatures. The mean hatching rates between 15 and 24 h after spawning was higher at a water temperature of 21.1 (±0.2) °C than at 24.1 (±0.2) °C. These results suggest that incubation temperature affected the early life stages of the boreal digging frog, since they spawn in ponds or puddles that form during the rainy season.

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Development of a Sensor Network for Continuous Water-temperature Evaluation

IEEJ Transactions on Electronics Information and Systems ◽

10.1541/ieejeiss.134.411 ◽

2014 ◽

Vol 134 (3) ◽

pp. 411-417

Author(s):

Teruichi Ogata ◽

Shinichi Sugawara ◽

Yoshinobu Maeda ◽

Hideo Makino

Keyword(s):

Water Temperature ◽

Sensor Network

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The Effects of Reproductive Status and Water Temperature on the Caloric Intake of Tursiops truncatus

Aquatic Mammals ◽

10.1578/am.46.4.2020.382 ◽

2020 ◽

Vol 46 (4) ◽

pp. 382-394

Author(s):

Holli C. Eskelinen ◽

Jill L. Richardson ◽

Juliana K. Wendt

Keyword(s):

Water Temperature ◽

Tursiops Truncatus ◽

Caloric Intake ◽

Reproductive Status

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Linking fish and crustacean taxonomic composition with seasonal contrasts in the soft-bottom intertidal zone

Brazilian Journal of Biology ◽

10.1590/1519-6984.234129 ◽

2020 ◽

Author(s):

M. A. Gondal ◽

S. Iqbal ◽

U. Atique ◽

N. U. Saher ◽

N. A. Qureshi ◽

...

Keyword(s):

Species Richness ◽

Water Temperature ◽

Fish Species ◽

Diversity Index ◽

Taxonomic Composition ◽

Primary Objective ◽

Negative Effect ◽

Fish Species Composition ◽

One Year ◽

Sw Monsoon

Abstract The primary objective of this study was to investigate the seasonal fish and crustacean variations concerning taxonomic composition, species richness, and diversity in sandy beach habitat. For this purpose, we investigated the Sonmiani Hor lagoon area during four distinct seasons, i.e., northeast (NE) monsoon, pre-monsoon, south-west (SW) monsoon, and post-monsoon for one year. During each haul, the net was pulled about 100m along the beach in 0.5m depth. The results showed a strong linear correlation between the diversity index and equitability in fishes (r = 0.978). The diversity index was strong negatively correlated with the abundance and biomass (r = -0.978, -0.972, respectively). The physical attributes like sea surface water temperature and salinity showed a strong negative effect on species assemblages (r = -0.981 and -0.943, respectively). The mean air and water temperature illustrated approximately 3°C difference during NE and pre-monsoon seasons. However, salinity, pH, and electrical conductivity did not show any significant seasonal variabilities. Under the ecological indices, the fish species displayed higher diversity (H’ = 3.19) during SW monsoon, whereas the lowest diversity was observed during pre-monsoon (H’ = 1.58). The equitability and species richness, however, remained more noticeable during SW monsoon (J’ = 0.81). The total number of individuals of fish and crustaceans reached 4799 with 3813 fish individuals and 986 individuals of crustaceans. A total of 27 families of fish while five crustacean families comprising of 30 genera and 38 fish species while ten genera and 17 species of crustaceans were recorded. Liza subviridis displayed the highest abundance among the sampled fish species. In conclusion, fish species constituted a significant part of the coastal fauna in the study area. The seasonal variations displayed distinct variations in fish species composition and diversity.

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