Use of otolith chemistry and acoustic telemetry to elucidate migratory contingents in barramundi Lates calcarifer

2017 ◽  
Vol 68 (8) ◽  
pp. 1554 ◽  
Author(s):  
D. A. Crook ◽  
D. J. Buckle ◽  
Q. Allsop ◽  
W. Baldwin ◽  
T. M. Saunders ◽  
...  
Keyword(s):  
Life History ◽  
Acoustic Telemetry ◽  
Fundamental Aspect ◽  
Otolith Chemistry ◽  
Wet Season ◽  
Lates Calcarifer ◽  
River Hydrology ◽  
History Of ◽  
High Flows ◽  
Dry Seasons

Migration is a fundamental aspect of the life history of many fish and must be well understood for targeted conservation and management. We used acoustic telemetry and otolith 87Sr/86Sr analysis, in conjunction with annual ageing, to study intraspecific variation in barramundi Lates calcarifer migration in the Northern Territory, Australia. Acoustic transmitters were implanted into 25 barramundi (420–1010-mm total length (TL); median 510mm TL) from freshwater reaches of the South Alligator River and their movements tracked over >2 years. 87Sr/86Sr transect analysis was also conducted on otoliths of 67 barramundi from the Daly, Mary, South Alligator and Roper rivers. Acoustic telemetry showed that most fish remained in fresh water across wet and dry seasons. Higher rates of movement occurred during the wet season and a minority of fish moved into the estuary during high flows. Otolith chemistry analyses revealed high diversity in salinity histories among individuals. We integrated the telemetry and otolith chemistry data to examine migration as a function of the stage of sexual development, and have proposed a revised life history model that identifies three migratory contingents. We conclude that anthropogenic disturbance, including modified river hydrology, has the potential to alter the frequency of life history contingents in barramundi populations.

The life history of a tropical dragonfly: Cora marina (Odonata: Polythoridae) in Guanacaste, Costa Rica

1996 ◽  
Vol 12 (4) ◽  
pp. 573-581 ◽  
Author(s):  
Gordon Pritchard
Keyword(s):  
Life History ◽  
Costa Rica ◽  
Hyporheic Zone ◽  
Flight Period ◽  
Low Oxygen ◽  
Wet Season ◽  
Oxygen Conditions ◽  
History Of ◽  
One Year ◽  
Oviposition Sites

ABSTRACTThe life history of Cora marina was followed for one year in two permanent streams at 600 m elevation in Guanacaste National Park; Costa Rica. The water temperature was c. 21°C year-round, but there was a distinct wet-dry seasonality, very little rain falling from January to May. In both streams, C. marina was univoltine. Adults first appeared at the beginning of May and the flight period coincided with the wet season. The availability of water-soaked logs as oviposition sites probably restricts reproduction to the wet season. Eggs hatched from mid-July to December. Recruitment to subsequent larval instars was slow during the wet season but increased at the start of the dry season. Final-instar larvae were collected from March to October. Oviposition in logs above the stream and the ability to live in the low oxygen conditions of the hyporheic zone probably allow eggs and small larvae to survive wet season spates.El ciclo biológico de una libelula tropical: Cora marina (Odonata: Polythoridae) en Guanacaste, Costa Rica.

Population dynamics and life history of Paratya australiensis Kemp, 1917 (Decapoda: Atyidae) in upland rainforest streams, south-eastern Queensland, Australia

1997 ◽  
Vol 48 (4) ◽  
pp. 361 ◽  
Author(s):  
Marty A. Hancock ◽  
Stuart E. Bunn
Keyword(s):  
Population Dynamics ◽  
Life History ◽  
Spatial And Temporal Variation ◽  
Tropical Species ◽  
Breeding Period ◽  
Wet Season ◽  
Lower Altitude ◽  
South Eastern ◽  
History Of ◽  
Paratya Australiensis

Aspects of the life history and population dynamics of Paratya australiensis were examined in headwater streams of the Conondale Range, south-eastern Queensland, particularly in relation to spatial and temporal variation in temperature and flow dynamics. Breeding period and population structure at nine sites in three subcatchments were examined during three years of monthly sampling using a non-destructive, photographic method. Breeding was restricted to the warmer months of late spring and summer. Peak abundances of ovigerous females and release of larvae occurred earlier at warmer, lower-altitude sites than at cooler, upper-altitude sites. This is consistent with the general trend for seasonal breeding in temperate and subtropical species of atyids, and perennial breeding in tropical species, and suggests that the summer breeding period of P. australiensis was strongly influenced by temperature. In subtropical, south-eastern Queensland, larvae were released just before and during the wet season. Although populations were quite resilient, disturbance from high-flow events also shaped the life history. Hydrology modified the breeding period by influencing overall abundance and recruitment success and by favouring the early release of larvae before peak flows. The reasonably well defined seasonal cycle and synchronized development appear to result from the combined effects of temperature and hydrology.

Life in the trees: the ecology and life history of Kentropyx striatus (Teiidae) in the lavrado area of Roraima, Brazil, with comments on the life histories of tropical teiid lizards

1992 ◽  
Vol 70 (10) ◽  
pp. 1995-2006 ◽  
Author(s):  
Laurie J. Vitt ◽  
Celso Morato de Carvalho
Keyword(s):  
Life History ◽  
Body Size ◽  
Sexual Dimorphism ◽  
Prey Size ◽  
Annual Rainfall ◽  
Activity Period ◽  
Body Temperatures ◽  
Wet Season ◽  
Reproductive Characteristics ◽  
History Of

The ecology and life history of the tropical teiid lizard Kentropyx striatus were studied in a grassland of northern Brazil, the lavrado area. The area, located nearly at the equator, experiences a prolonged dry season with a wet season extending from May to September. Total annual rainfall averages 1750 mm. Lizards were nonrandomly distributed among habitat patches and microhabitats. Most individuals were in trees and shrubs surrounding temporary and permanent water. Most individuals were observed active during late morning, the time period during which feeding and social interactions were observed. Lizards bask to achieve active body temperatures averaging 35.7 ± 0.23 °C. Body temperature is correlated with both substrate and air temperatures; foraging lizards maintained higher temperatures than basking lizards regardless of whether they were in sun, and lizards sampled when there was cloud cover had lower body temperatures than those sampled when sun was available. Females reach sexual maturity at 74 mm snout–vent length (SVL), produce 3–9 eggs per clutch, reproduce more than once per season, and commence reproduction during the wet season. Lizards hatch from eggs at 31 mm SVL. Maturity appears to be reached in 1 year or less. Overall, female reproductive characteristics are similar to those of other tropical teiid lizards that have been studied, with body size explaining much of the variance in reproductive characteristics across species. There is pronounced sexual dimorphism, with males larger in body size as well as certain other characteristics independent of body size. Sexual dimorphism appears to be a consequence of sexual selection. The diet is varied, but is dominated volumetrically by frogs, eruciform larvae, and spiders. Lizard body size accounted for only 5.5% of the variance in prey size and there was no difference in prey size due to sex. The occurrence of frogs and lizards in K. striatus stomachs suggests that teiid lizards may influence the structure of lizard and frog assemblages. The similarity of K. striatus to other studied tropical teiids in reproductive characteristics, morphology, activity period, activity temperatures, and diet underscore the conservative nature of the ecology of teiid lizards, presumably a consequence of their mode of prey acquisition.

The usefulness of otolith chemistry to determine the life history of the honeycomb grouper around Reunion Island (SW Indian Ocean)

2016 ◽  
Vol 179 ◽  
pp. 104-114 ◽  
Author(s):  
A. Riou ◽  
G. Bareille ◽  
F. Morat ◽  
K. Pothin ◽  
N. Bru ◽  
...  
Keyword(s):  
Life History ◽  
Indian Ocean ◽  
Otolith Chemistry ◽  
Reunion Island ◽  
Réunion Island ◽  
History Of ◽  
Sw Indian Ocean ◽  
Honeycomb Grouper

Resolution of the early life history of a reef fish using otolith chemistry

Coral Reefs ◽  
2005 ◽  
Vol 24 (2) ◽  
pp. 222-229 ◽  
Author(s):  
Heather M. Patterson ◽  
Michael J. Kingsford ◽  
Malcolm T. McCulloch
Keyword(s):  
Life History ◽  
Reef Fish ◽  
Early Life ◽  
Early Life History ◽  
Otolith Chemistry ◽  
History Of

Importance of the natural flow regime to an amphidromous shrimp: a case study

2017 ◽  
Vol 68 (5) ◽  
pp. 909 ◽  
Author(s):  
Peter A. Novak ◽  
Erica A. Garcia ◽  
Bradley J. Pusey ◽  
Michael M. Douglas
Keyword(s):  
Life History ◽  
Life History Strategy ◽  
Early Life History ◽  
Large River ◽  
Wet Season ◽  
Reproductive Condition ◽  
Natural Flow ◽  
History Of ◽  
River Reach

Amphidromous shrimp inhabiting large river systems are thought to migrate downstream to hatch larvae close to the estuary or sea. Recent work on Macrobrachium spinipes in northern Australia challenged this hypothesis, with the discovery of abundant females in reproductive condition over 400km upstream. We investigated the early life history of M. spinipes by using a combination of field sampling, laboratory experiments and modelling. We determined the spatial and temporal production of larvae, larval salinity requirements, and, finally, the potential for transport of larvae to the estuary during the wet season. Larvae occurred in high abundances across a 400-km river reach. However, successful larval development was contingent on access, by drift, to saltwater within 7 days. This interval is longer than that found for the majority of amphidromous shrimp species and we propose that larvae in the study river are able to successfully moult through the early stages in freshwater. Large, wet-season discharge events were critical for transporting larvae from all sampled sites to the estuary. The present study confirmed the amphidromous life history of M. spinipes, highlighted the importance of natural flows for maintaining existing populations and provided evidence of a novel type of amphidromous life-history strategy.

scholarly journals Corrigenda - Early life history of barramundi, Lates calcarifer (Bloch), in north-eastern Queensland

1985 ◽  
Vol 36 (2) ◽  
pp. 191
Author(s):  
DJ Russell ◽  
RN Garrett
Keyword(s):  
Life History ◽  
Early Life ◽  
Early Life History ◽  
Lates Calcarifer ◽  
North Eastern ◽  
History Of

Life history of Spodoptera exigua (Lepidoptera: Noctuidae) on various host plants

2006 ◽  
Vol 96 (6) ◽  
pp. 613-618 ◽  
Author(s):  
A.A. Azidah ◽  
M. Sofian-Azirun
Keyword(s):  
Life History ◽  
Host Plants ◽  
Spodoptera Exigua ◽  
History Of ◽  
Lepidoptera Noctuidae
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