Descriptions of eggs, larvae, and early juveniles of the Iowa darter, Etheostoma exile (Girard), from Lac Heney, Quebec

1987 ◽  
Vol 65 (5) ◽  
pp. 1264-1269 ◽  
Author(s):  
Thomas P. Simon ◽  
Daniel J. Faber
Keyword(s):  
Life History ◽  
Early Life ◽  
Yellow Perch ◽  
Aquatic Macrophytes ◽  
Morphological Characteristics ◽  
Early Life History ◽  
Tree Roots ◽  
Early Juvenile ◽  
Juvenile Stages

Descriptive morphology of egg, larval, and early juvenile stages of the Iowa darter, Etheostoma exile (Girard), from Lac Heney, Quebec, were examined using morphological, meristic, morphometric, and pigment characteristics. The Iowa darter is a phyto-lithophil spawning on aquatic macrophytes and exposed tree roots. Ova are weakly indented and range in diameter from 0.9 to 1.3 mm, with larvae presumably hatching at ca. 3.6 mmTL. The Iowa darter has 16–18 preanal myomeres (typically 17), and from 20–23 postanal myomeres. Pigmentation is superficially most similar to the yellow perch. A synopsis of the known aspects of the early life history is presented and distinctive morphological characteristics of syntopic percids are compared.

scholarly journals Ontogeny of Orientation during the Early Life History of the Pelagic Teleost Mahi-Mahi, Coryphaena hippurus Linnaeus, 1758

Oceans ◽  
2020 ◽  
Vol 1 (4) ◽  
pp. 237-250 ◽  
Author(s):  
Robin Faillettaz ◽  
Eve Johnson ◽  
Patrick Dahlmann ◽  
Alexandra Syunkova ◽  
John Stieglitz ◽  
...  
Keyword(s):  
Life History ◽  
Early Life ◽  
Early Life History ◽  
Early Juvenile ◽  
Pelagic Species ◽  
Larval Stages ◽  
Coryphaena Hippurus ◽  
Laboratory Setup ◽  
Early Juvenile Stage ◽  
The Individual

Understanding the orientation behavior and capabilities in early life history (ELH) of fishes is critical for studying their dispersal but has, surprisingly, never been tested in any pelagic species. We here investigate the ontogeny of orientation and swimming abilities of the pelagic Coryphaena hippurus Linnaeus, 1758 larvae, hereafter mahi-mahi, through their ELH stages using the Drifting In Situ Chamber (DISC) in a laboratory setup. The DISC was deployed in a large (3 m3) circular aquarium in order to control the stimulus perceived by the fish and to identify behavioral response at the individual, developmental stage, and population levels. A total of 79 individual ranging from 7 to 23 days post hatch and from preflexion to early juvenile stages were exposed to a directional light mimicking the sun’s position. Orientation towards the light direction was tested by switching the light by 180° among trials. To compare the orientation among development stages, we scaled the directionality by the swimming ability, therein defined as “directionality competence”. The results show that while mahi-mahi directionality competence increases through ontogeny, they acquire a positive and directional phototaxis behavior at the flexion stage. This potential solar orientation is kept through the early juvenile stage. Mahi-mahi may thus be able to use the sun as a compass in the open ocean as observed in the larval stages of demersal species seeking for settlement habitats. This ability notably develops before the improvement of their swimming capabilities, suggesting that early orientation—even at micro-scale—and swimming capabilities may be equally important for the survival of the ELH stages of pelagic species.

Early life history of oxudercine goby Pseudapocryptes elongatus in the Mekong Delta, Vietnam

2016 ◽  
Vol 98 (3) ◽  
pp. 597-604 ◽  
Author(s):  
Kazuki Yokouchi ◽  
Hieu Van Mai ◽  
Toan Thanh Vo ◽  
Ryoshiro Wakiya ◽  
Tatsuya Kawakami ◽  
...  
Keyword(s):  
Life History ◽  
Early Life ◽  
Mekong Delta ◽  
Early Life History ◽  
Larval Habitat ◽  
The Body ◽  
Morphological Observation ◽  
History Of ◽  
Juvenile Stages ◽  
Genetic Species

Pseudapocryptes elongatus is one of the oxudercine gobies, which show varying degrees of amphibious behaviour and capacities to breathe air. There is little information on the early life history of P. elongatus, particularly of their morphology and larval habitat and duration. This study focused on the life history of larval and juvenile stages of P. elongatus investigated by genetic species identification, morphological observation and otolith analyses using specimens collected in June and October 2012 from estuaries in Bac Liêu Province, southern Vietnam (09°14′N 105°43′E). Genetically identified juvenile P. elongatus were characterized by (1) a slender body form, (2) the anterior edges of both the anal and second dorsal fins located at the midpoint along the body axis, (3) scarce chromatophores over the body surface, (4) melanophores in the parietal region between the eyes, and (5) a single row of melanophores along the base of the anal fin. Mean age at recruitment to estuaries was 38.0 ± 4.1 days, and otolith Sr/Ca ratios ranged from 8.9 to 9.9 mmol mol−1, suggesting that larval migration from their spawning sites requires more than 1 month in saline environments.

Factors affecting the early life history of yellow perch,Perca flavescens

1985 ◽  
Vol 12 (1) ◽  
pp. 47-56 ◽  
Author(s):  
Melbourne C. Whiteside ◽  
C. Michael Swindoll ◽  
William L. Doolittle
Keyword(s):  
Life History ◽  
Early Life ◽  
Yellow Perch ◽  
Perca Flavescens ◽  
Early Life History ◽  
Factors Affecting ◽  
History Of

Factors Influencing Year-Class Strength of Percids: A Summary and a Model of Temperature Effects

1977 ◽  
Vol 34 (10) ◽  
pp. 1900-1909 ◽  
Author(s):  
J. F. Koonce ◽  
T. B. Bagenal ◽  
R. F. Carline ◽  
K. E. F. Hokanson ◽  
M. Nagięć
Keyword(s):  
Life History ◽  
Temperature Regime ◽  
Early Life ◽  
Yellow Perch ◽  
Lake Erie ◽  
Perca Flavescens ◽  
Early Life History ◽  
Direct Effects ◽  
Factors Influencing ◽  
Class Strength

Factors regulating year-class strength in the percid genera Stizostedion and Perca are summarized. Some index of water temperature regime correlates significantly with year-class strength of percids in many water bodies. Moderate synchrony of year-class strength is noted for walleye (Stizostedion vitreum vitreum) in several lakes in North America. A probablistic model is proposed to explain the basis of temperature dependence of year-class strength in percids, but tests of the model using Lake Erie data indicated that observed correlations between temperature and year-class strength of yellow perch (Perca flavescens) and walleye may not be the result of direct effects of the temperature regime on survivorship of early life-history phases. Key words: Percidae, year-class strength, temperature, probalistic model, early life history

Early life history of larvae and early juvenile Atlantic horse mackerel Trachurus trachurus off the Portuguese west coast

2016 ◽  
Vol 183 ◽  
pp. 111-118 ◽  
Author(s):  
Elisabeth Van Beveren ◽  
Maria Klein ◽  
Ester A. Serrão ◽  
Emanuel J. Gonçalves ◽  
Rita Borges
Keyword(s):  
Life History ◽  
West Coast ◽  
Early Life ◽  
Early Life History ◽  
Horse Mackerel ◽  
Trachurus Trachurus ◽  
Early Juvenile ◽  
History Of ◽  
Atlantic Horse Mackerel
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