Effects of mating, nutritional condition, and mouthpart separation on ingestion and destination of sugar and water by the mosquito Culiseta inornata

1985 ◽  
Vol 10 (2) ◽  
pp. 137-144 ◽  
Author(s):  
W. G. FRIEND
Keyword(s):  
Nutritional Condition ◽  
Culiseta Inornata

Diagnosing the nutritional condition of chestnut groves by soil and leaf analyses

2018 ◽  
Vol 228 ◽  
pp. 113-121 ◽  
Author(s):  
Margarida Arrobas ◽  
Sandra Afonso ◽  
M. Ângelo Rodrigues
Keyword(s):  
Nutritional Condition

Influence of environmental conditions on insect reproduction and chemical composition of escamoles (Liometopum apiculatum M)

2016 ◽  
Vol 2 (1) ◽  
pp. 61-65 ◽  
Author(s):  
V. Melo-Ruíz ◽  
K. Sánchez-Herrera ◽  
H. Sandoval-Trujillo ◽  
R. Díaz-García ◽  
T. Quirino-Barreda
Keyword(s):  
Nutritional Value ◽  
Nutritional Condition ◽  
Soluble Carbohydrates ◽  
Soluble Carbohydrate ◽  
Arid Zones ◽  
Good Source ◽  
Rural People ◽  
Abiotic Conditions ◽  
Carbohydrate Levels ◽  
Insect Reproduction

Escamoles, ant eggs (Liometopum apiculatum M), are edible insects consumed in great numbers and appreciated for their sensory characteristics, but not for their nutritional value. In Mexico, they reproduce in arid and semi-arid zones of Mexico and several states (Puebla, Tlaxcala, Hidalgo). Samples were gathered to determine reproduction conditions and perform an insect analysis to generate data composition in macronutrients, on dry basis, according to AOAC methods. The obtained data were: proteins: 42.12-50.63%; lipids: 30.27-34.96%; minerals: 6.53-7.85%; fibres: 1.91-2.56%; and soluble carbohydrates: 6.80-18.27%. Entomological material was collected in spring 2014, 3 nests for each zone, all from different altitudes and agroclimatic regions. Samples were representative for the insect supply in the areas studied. Insects are high in proteins and lipids, compared with most of the commonly consumed food, due to their high content of fatty acids; they must be refrigerated for later consumption. Minerals are moderated. Fibre and soluble carbohydrate levels are low, but an excess of proteins can be converted into carbohydrates via gluconeogenesis. Escamoles reproduce once a year in the spring, but sometimes one nest can provide escamoles eggs twice in the same season, once at the beginning and again at the end, depending on the biotic and abiotic conditions of their environment. Escamoles are a good source of nutrients; however, some rural people sell them to obtain extra income rather than consume them to improve their nutritional condition and welfare.

scholarly journals Casitas: a location-dependent ecological trap for juvenile Caribbean spiny lobsters, Panulirus argus

2015 ◽  
Vol 72 (suppl_1) ◽  
pp. i177-i184 ◽  
Author(s):  
Benjamin C. Gutzler ◽  
Mark J. Butler ◽  
Donald C. Behringer
Keyword(s):  
Florida Keys ◽  
Nutritional Condition ◽  
Ecological Trap ◽  
Habitat Modification ◽  
Panulirus Argus ◽  
Risk Of Predation ◽  
Spiny Lobsters ◽  
Nursery Habitats ◽  
Animal Size ◽  
Fisheries Enhancement

Abstract Casitas are artificial shelters used by fishers to aggregate Caribbean spiny lobsters (Panulirus argus) for ease of capture. However, casitas may function as an ecological trap for juvenile lobsters if they are attracted to casitas and their growth or mortality is poorer compared with natural shelters. We hypothesized that juvenile lobsters may be at particular risk if attracted to casitas because they are less able than larger individuals to defend themselves, and do not forage far from shelter. We compared the nutritional condition, relative mortality, and activity of lobsters of various sizes in casitas and natural shelters in adult and juvenile lobster-dominated habitats in the Florida Keys (United States). We found that the ecological effects of casitas are complex and location-dependent. Lobsters collected from casitas and natural shelters did not differ in nutritional condition. However, juvenile lobsters in casitas experienced higher rates of mortality than did individuals in natural shelters; the mortality of large lobsters did not differ between casitas and natural shelters. Thus, casitas only function as ecological traps when deployed in nursery habitats where juvenile lobsters are lured by conspecifics to casitas where their risk of predation is higher. These results highlight the importance of accounting for animal size and location-dependent effects when considering the consequences of habitat modification for fisheries enhancement.

Comparison of Methods for Determining Nutritional Condition in Spiny Lobsters

2017 ◽  
Vol 36 (1) ◽  
pp. 175-179 ◽  
Author(s):  
Benjamin C. Gutzler ◽  
Mark J. Butler
Keyword(s):  
Nutritional Condition ◽  
Comparison Of Methods ◽  
Spiny Lobsters

Resource partitioning by two syntopic sister species of butterflyfish (Chaetodontidae)

2017 ◽  
Vol 98 (7) ◽  
pp. 1767-1773 ◽  
Author(s):  
Ana M.R. Liedke ◽  
Roberta M. Bonaldo ◽  
Bárbara Segal ◽  
Carlos E.L. Ferreira ◽  
Lucas T. Nunes ◽  
...  
Keyword(s):  
Puerto Rico ◽  
Resource Partitioning ◽  
Diet Composition ◽  
Foraging Behaviour ◽  
Nutritional Condition ◽  
Ecological Communities ◽  
Substrate Selection ◽  
Feeding Rates ◽  
Bite Rate ◽  
Close Phylogenetic Relationship

Resource partitioning is considered one of the main processes driving diversification in ecological communities because it allows coexistence among closely related and ecologically equivalent species. We combined three complementary approaches, i.e. the evaluation of foraging behaviour, diet composition and nutritional condition (RNA:DNA ratio), to assess feeding by two closely related (sister) butterflyfishes that are syntopic in Puerto Rico. Chaetodon capistratus had a higher abundance and higher bite rate and selected octocorals and hard corals for feeding, whereas Chaetodon striatus fed preferentially on sandy substrates. Cnidarians and polychaetes were the most representative diet items for both species, but C. capistratus preferred the former (Feeding Index of 74.3%) and C. striatus the latter (Feeding Index of 60.4%). Similar RNA:DNA ratios for both species suggest that, although they differ in feeding rates and diet, C. capistratus and C. striatus have similar nutritional fitness. Therefore, these species are both zoobenthivores but show clear differences in their substrate selection. The differences in the use of foraging substrate by C. capistratus and C. striatus, despite their close phylogenetic relationship and similar diets, suggest that these species coexist by resource partitioning.

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