Ontogenetic Diet Shift, Feeding Ecology, and Trophic Niches of the Redspot Chub (Cypriniformes: Cyprinidae: Nocomis asper)

2021 ◽  
Vol 109 (3) ◽  
Author(s):  
Anthony W. Rodger ◽  
Trevor A. Starks
Keyword(s):  
Feeding Ecology ◽  
Diet Shift ◽  
Ontogenetic Diet Shift ◽  
Trophic Niches

scholarly journals Onychophorology, the study of velvet worms, historical trends, landmarks, and researchers from 1826 to 2020 (a literature review)

Uniciencia ◽  
2021 ◽  
Vol 35 (1) ◽  
pp. 210-230
Author(s):  
Julián Monge-Nájera
Keyword(s):  
Costa Rica ◽  
Conservation Status ◽  
Diet Shift ◽  
Mass Extinctions ◽  
Half Century ◽  
Ontogenetic Diet Shift ◽  
Velvet Worms ◽  
History Of ◽  
Experimental Taphonomy ◽  
New Research

Velvet worms, also known as peripatus or onychophorans, are a phylum of evolutionary importance that has survived all mass extinctions since the Cambrian period. They capture prey with an adhesive net that is formed in a fraction of a second. The first naturalist to formally describe them was Lansdown Guilding (1797-1831), a British priest from the Caribbean island of Saint Vincent. His life is as little known as the history of the field he initiated, Onychophorology. This is the first general history of Onychophorology, which has been divided into half-century periods. The beginning, 1826-1879, was characterized by studies from former students of famous naturalists like Cuvier and von Baer. This generation included Milne-Edwards and Blanchard, and studies were done mostly in France, Britain, and Germany. In the 1880-1929 period, research was concentrated on anatomy, behavior, biogeography, and ecology; and it is in this period when Bouvier published his mammoth monograph. The next half-century, 1930-1979, was important for the discovery of Cambrian species; Vachon’s explanation of how ancient distribution defined the existence of two families; DNA and electron microscopy from Brazil; and primitive attempts at systematics using embryology or isolated anatomical characteristics. Finally, the 1980-2020 period, with research centered in Australia, Brazil, Costa Rica, and Germany, is marked by an evolutionary approach: from body and behavior to geographic distribution; the discovery of how they form their adhesive net; the reconstruction of Cambrian onychophoran communities, the first experimental taphonomy; the first country-wide map of conservation status (in Costa Rica); the first model of why they survive in cities; the discovery of new phenomena like food hiding, parental feeding investment, and ontogenetic diet shift; and the birth of a new research branch, onychophoran ethnobiology. While a few names often appear in the literature, most knowledge was produced by a mass of researchers who entered the field only briefly.

scholarly journals Feeding behavior of Costa Rican velvet worms: food hiding, parental feeding investment and ontogenetic diet shift (Onychophora: Peripatidae)

2019 ◽  
Vol 11 (2) ◽  
pp. 85-88
Author(s):  
José Pablo Barquero González ◽  
Alvaro Vega-Hidalgo ◽  
Julián Monge-Nájera
Keyword(s):  
Feeding Behavior ◽  
Costa Rican ◽  
Diet Shift ◽  
Ontogenetic Diet Shift ◽  
Parental Feeding ◽  
Velvet Worms ◽  
First Time

We report, for the first time in onychophorans, food hiding, parental feeding investment and an ontogenetic diet shift two weeks after birth: from the parent’s adhesive used to capture prey, to the prey itself. 

Prey preferences and ontogenetic diet shift of European hake Merluccius merluccius (Linnaeus, 1758) in the central Mediterranean Sea

2019 ◽  
Vol 25 ◽  
pp. 100440 ◽  
Author(s):  
Virginia Carrozzi ◽  
Manfredi Di Lorenzo ◽  
Daniela Massi ◽  
Antonino Titone ◽  
Giandomenico Ardizzone ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Diet Shift ◽  
Central Mediterranean ◽  
Merluccius Merluccius ◽  
Ontogenetic Diet Shift ◽  
Prey Preferences ◽  
Central Mediterranean Sea ◽  
European Hake

Ontogenetic diet shift in the June sucker Chasmistes liorus (Cypriniformes, Catostomidae) in the early juvenile stage

2010 ◽  
Vol 19 (3) ◽  
pp. 433-438 ◽  
Author(s):  
J. D. Kreitzer ◽  
M. C. Belk ◽  
D. B. Gonzalez ◽  
R. C. Tuckfield ◽  
D. K. Shiozawa ◽  
...  
Keyword(s):  
Juvenile Stage ◽  
Diet Shift ◽  
Early Juvenile ◽  
Ontogenetic Diet Shift ◽  
Early Juvenile Stage ◽  
June Sucker ◽  
Chasmistes Liorus

Feeding habits and ontogenetic diet shift of the striped red mullet, Mullus surmuletus Linnaeus, 1758

1997 ◽  
Vol 31 (3) ◽  
pp. 257-267 ◽  
Author(s):  
M. Labropoulou ◽  
A. Machias ◽  
N. Tsimenides ◽  
A. Eleftheriou
Keyword(s):  
Feeding Habits ◽  
Diet Shift ◽  
Ontogenetic Diet Shift ◽  
Red Mullet ◽  
Mullus Surmuletus

Ontogenetic diet shift of age-0 year Pacific bluefin tunaThunnus orientalis

2012 ◽  
Vol 82 (1) ◽  
pp. 263-276 ◽  
Author(s):  
T. Shimose ◽  
H. Watanabe ◽  
T. Tanabe ◽  
T. Kubodera
Keyword(s):  
Diet Shift ◽  
Ontogenetic Diet Shift

Feeding habits of Urotrygon microphthalmum (Myliobatiformes: Urotrygonidae) caught off northeastern Brazil

2021 ◽  
Vol 19 (4) ◽  
Author(s):  
Jones Santander-Neto ◽  
Dante J. V. Freitas ◽  
Hugo Bornatowski ◽  
Rosângela Lessa
Keyword(s):  
Trophic Level ◽  
Feeding Habits ◽  
Stomach Contents ◽  
Critically Endangered ◽  
Northeastern Brazil ◽  
Diet Shift ◽  
Ontogenetic Diet Shift ◽  
Food Items ◽  
Males And Females ◽  
Stomach Contents Analysis

Abstract The feeding habits of Urotrygon microphthalmum, a Critically Endangered (CR) species, were investigated through stomach contents analysis from specimens caught on bottom double rigged otter trawls in Pernambuco state, Brazil, between March of 2010 and March of 2012. A total of 338 stomachs were analyzed, and 31 food items were identified in the diet of U. microphthalmum. The species ingests mainly shrimps. The diets between males and females were not different, and an ontogenetic diet shift was not observed. The estimated species’ trophic level is 3.5, classifying it as a secondary order consumer.

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