Patterns and consequences of selective processes in teleost early life histories

1997 ◽  
pp. 173-196 ◽  
Author(s):  
Edward D. Houde
Keyword(s):  
Early Life ◽  
Life Histories

Early life histories of the London poor using δ13C and δ15N stable isotope incremental dentine sampling

2014 ◽  
Vol 154 (4) ◽  
pp. 585-593 ◽  
Author(s):  
Rowena C. Henderson ◽  
Julia Lee-Thorp ◽  
Louise Loe
Keyword(s):  
Stable Isotope ◽  
Early Life ◽  
Life Histories ◽  
Δ13c And Δ15n

Spatially dynamic maternal control of migratory fish recruitment pulses triggered by shifting seasonal cues

2018 ◽  
Vol 69 (6) ◽  
pp. 942 ◽  
Author(s):  
Daisuke Goto ◽  
Martin J. Hamel ◽  
Mark A. Pegg ◽  
Jeremy J. Hammen ◽  
Matthew L. Rugg ◽  
...  
Keyword(s):  
Life History ◽  
Early Life ◽  
Life Histories ◽  
Egg Production ◽  
Local Density ◽  
Early Life History ◽  
Biophysical Model ◽  
Larval Stages ◽  
Predation Mortality ◽  
Stability And Resilience

Environmental regimes set the timing and location of early life-history events of migratory species with synchronised reproduction. However, modified habitats in human-dominated landscapes may amplify uncertainty in predicting recruitment pulses, impeding efforts to restore habitats invaluable to endemic species. The present study assessed how environmental and spawner influences modulate recruitment variability and persistence of the Missouri River shovelnose sturgeon (Scaphirhynchus platorynchus) under modified seasonal spawning and nursery habitat conditions. Using a spatially explicit individual-based biophysical model, spawning cycle, early life-history processes (dispersal, energetics and survival) and prey production were simulated under incrementally perturbed flow (from –10 to –30%) and temperature (+1 and +2°C) regimes over 50 years. Simulated flow reduction and warming synergistically contracted spring spawning habitats (by up to 51%) and periods (by 19%). Under these conditions, fewer mature females entered a reproductive cycle, and more females skipped spawning, reducing spawning biomass by 20–50%. Many spawners migrated further to avoid increasingly unfavourable habitats, intensifying local density dependence in larval stages and, in turn, increasing size-dependent predation mortality. Diminished egg production (by 20–97%) and weakened recruitment pulses (by 46–95%) ultimately reduced population size by 21–74%. These simulations illustrate that environmentally amplified maternal influences on early life histories can lower sturgeon population stability and resilience to ever-increasing perturbations.

scholarly journals Erratum to: Comparison of the early life histories of two Cynoglossus species in the inner estuary of Ariake Bay, Japan

2009 ◽  
Vol 56 (4) ◽  
pp. 372-372
Author(s):  
Yuta Yagi ◽  
Izumi Kinoshita ◽  
Shinji Fujita ◽  
Hiroshi Ueda ◽  
Daisuke Aoyoma
Keyword(s):  
Early Life ◽  
Life Histories ◽  
Ariake Bay

scholarly journals The influence of weather conditions during gestation on life histories in a wild Arctic ungulate

2016 ◽  
Vol 283 (1841) ◽  
pp. 20161760 ◽  
Author(s):  
Mathieu Douhard ◽  
Leif Egil Loe ◽  
Audun Stien ◽  
Christophe Bonenfant ◽  
R. Justin Irvine ◽  
...  
Keyword(s):  
Life History ◽  
Reproductive Success ◽  
Environmental Conditions ◽  
Early Life ◽  
Life Histories ◽  
Weather Conditions ◽  
Later Life ◽  
Svalbard Reindeer ◽  
Long Term Study ◽  
Age Related

The internal predictive adaptive response (internal PAR) hypothesis predicts that individuals born in poor conditions should start to reproduce earlier if they are likely to have reduced performance in later life. However, whether this is the case remains unexplored in wild populations. Here, we use longitudinal data from a long-term study of Svalbard reindeer to examine age-related changes in adult female life-history responses to environmental conditions experienced in utero as indexed by rain-on-snow (ROS utero ). We show that females experiencing high ROS utero had reduced reproductive success only from 7 years of age, independent of early reproduction. These individuals were able to maintain the same annual reproductive success between 2 and 6 years as phenotypically superior conspecifics that experienced low ROS utero . Young females born after high ROS utero engage in reproductive events at lower body mass (about 2.5 kg less) than those born after low ROS utero . The mean fitness of females that experienced poor environmental conditions in early life was comparable with that of females exposed to good environmental conditions in early life. These results are consistent with the idea of internal PAR and suggest that the life-history responses to early-life conditions can buffer the delayed effects of weather on population dynamics.

Early life histories of three sympatric sticklebacks in a salt-marsh

1989 ◽  
Vol 34 (2) ◽  
pp. 207-221 ◽  
Author(s):  
R. Poulin ◽  
G. J. Fitzgerald
Keyword(s):  
Salt Marsh ◽  
Early Life ◽  
Life Histories

scholarly journals A Field Guide to Australian Butterflies

1995 ◽  
Vol 2 (2) ◽  
pp. 201
Author(s):  
Damon Oliver
Keyword(s):  
Geographic Distribution ◽  
Early Life ◽  
Life Histories ◽  
Morphological Characters ◽  
Natural World ◽  
Biological Information ◽  
Butterfly Species ◽  
Life Stages ◽  
Early Life Stages ◽  
Field Guide

Robert Fisher believes that an increased awareness about conserving the remaining unique biota of Australia has created a desire in many people to identify and understand the biology of organisms. A Field Guide to Australian Butterflies is a useful way to impart such biological information to those who wish to explore the natural world around them. The objective of this field guide is to provide a book of photographs which aid in the identification and appreciation of some two hundred Australian butterfly species, about half of the total described species in this country. The field guide provides a brief but adequate introduction explaining the classification, life histories, morphology and geographic distribution of Australian butterflies. It is then divided into sections corresponding to the six families of butterflies represented in Australia. Each section gives a brief overview of the unique morphological characters, geographic distribution and life cycle of that family. A noteworthy feature of this guide is the inclusion of several pages of excellent photographs of early life stages at the beginning of each family section. Ideally, though, it would have been desirable to have photographs of the early life stages for all species presented, to complement the adult photographs.

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