The roles of morphological traits, resource variation and resource partitioning associated with the dietary niche expansion in the fish‐eating bat Myotis pilosus

2019 ◽  
Author(s):  
Yang Chang ◽  
Shengjing Song ◽  
Aoqiang Li ◽  
Yu Zhang ◽  
Zhongle Li ◽  
...  
Keyword(s):  
Resource Partitioning ◽  
Morphological Traits ◽  
Niche Expansion ◽  
Dietary Niche ◽  
Resource Variation

Dietary niche expansion and niche shift in native marble trout (Salmo marmoratus) living in sympatry with introduced rainbow trout (Oncorhynchus mykiss)

2017 ◽  
Vol 27 (3) ◽  
pp. 720-731 ◽  
Author(s):  
Camille Musseau ◽  
Simone Vincenzi ◽  
Dušan Jesenšek ◽  
Stéphanie Boulêtreau ◽  
Frédéric Santoul ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Oncorhynchus Mykiss ◽  
Niche Shift ◽  
Marble Trout ◽  
Niche Expansion ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Dietary Niche ◽  
Salmo Marmoratus

Dietary niche expansion of a kelp forest predator recovering from intense commercial exploitation

Ecology ◽  
2014 ◽  
Vol 95 (1) ◽  
pp. 164-172 ◽  
Author(s):  
Scott L. Hamilton ◽  
Seth D. Newsome ◽  
Jennifer E. Caselle
Keyword(s):  
Kelp Forest ◽  
Commercial Exploitation ◽  
Niche Expansion ◽  
Dietary Niche

Diets of two congeneric species of crayfish worm (Annelida: Clitellata: Branchiobdellidae) from western Canada

2011 ◽  
Vol 89 (4) ◽  
pp. 289-296 ◽  
Author(s):  
K.S.P. Gale ◽  
H.C. Proctor
Keyword(s):  
Statistical Difference ◽  
Niche Partitioning ◽  
Gut Contents ◽  
Western Canada ◽  
Congeneric Species ◽  
Limited Evidence ◽  
Orconectes Virilis ◽  
Age Classes ◽  
Niche Expansion ◽  
Dietary Niche

Crayfish worms (Branchiobdellidae) are obligatory ectosymbionts of crustaceans, primarily crayfish. Little is known about their diets or ecology. A single crayfish can host several species and age classes of branchiobdellidans at one time, creating the potential for intra- and inter-specific competition. Coexistence of competitors can be promoted through dietary differences; therefore, we examined gut contents of Cambarincola chirocephalus Ellis, 1919 and Cambarincola vitreus Ellis, 1919, two species of branchiobdellidan occasionally found on the same host (the crayfish Orconectes virilis (Hagen, 1870) in Western Canada) to assess evidence of dietary niche partitioning. We also compared gut contents of conspecific adults and juveniles to determine whether diets differed with age. We found a range of diatoms and invertebrates, particularly rotifers, in the guts of both Cambarincola species. The species appear to have different diets, in that guts of C. chirocephalus contained more invertebrate material than did those of C. vitreus. There was no statistical difference in composition of gut contents between adult and juvenile conspecifics. We found very limited evidence of dietary niche expansion in C. vitreus in the absence of C. chirocephalus. The observed dietary differences between species may promote their continued coexistence in areas where their ranges overlap.

scholarly journals The role of the gut microbiota in the dietary niche expansion of fishing bats

2021 ◽  
Author(s):  
Ostaizka Aizpurua ◽  
Lasse Nyholm ◽  
Evie Morris ◽  
Gloriana Chaverri ◽  
Luis Gerardo Herrera Montalvo ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Amplicon Sequencing ◽  
Fish Prey ◽  
Niche Expansion ◽  
Niche Shifts ◽  
Dietary Transition ◽  
Dietary Niche ◽  
Functional Features ◽  
Gut Microorganisms ◽  
The Impact

Abstract BackgroundDue to its central role in animal nutrition, the gut microbiota is likely a relevant factor shaping dietary niche shifts. We analysed both the impact and contribution of the gut microbiota to the dietary niche expansion of the only four bat species that have incorporated fish into their primarily arthropodophage diet.ResultsWe first compared the taxonomic and functional features of the gut microbiota of the four piscivorous bats to that of 11 strictly arthropodophagous species using 16S rRNA targeted amplicon sequencing. Second, we increased the resolution of our analyses for one of the piscivorous bat species, namely Myotis capaccinii , and analysed multiple populations combining targeted approaches with shotgun sequencing. To better understand the origin of gut microorganisms, we also analysed the gut microbiota of their fish prey ( Gambusia holbrooki ). Our analyses showed that piscivorous bats carry a characteristic gut microbiota that differs from that of their strict arthropodophagous counterparts, in which the most relevant bacteria have been directly acquired from their fish prey. This characteristic microbiota exhibits enrichment of genes involved in vitamin biosynthesis, as well as complex carbohydrate and lipid metabolism, likely providing their hosts with an enhanced capacity to metabolise the glycosphingolipids and long-chain fatty acids that are particularly abundant in fish.ConclusionsOur results depict the gut microbiota as a relevant element in facilitating the dietary transition from arthropodophagy to piscivory.

scholarly journals Influences of dietary niche expansion and Pliocene environmental changes on the origins of stone tool making

2021 ◽  
Vol 562 ◽  
pp. 110074 ◽  
Author(s):  
Rhonda L. Quinn ◽  
Jason Lewis ◽  
Jean-Philip Brugal ◽  
Christopher J. Lepre ◽  
Alexandr Trifonov ◽  
...  
Keyword(s):  
Environmental Changes ◽  
Stone Tool ◽  
Niche Expansion ◽  
Dietary Niche

scholarly journals The role of the gut microbiota in the dietary niche expansion of fishing bats

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Ostaizka Aizpurua ◽  
Lasse Nyholm ◽  
Evie Morris ◽  
Gloriana Chaverri ◽  
L. Gerardo Herrera Montalvo ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Amplicon Sequencing ◽  
Fish Prey ◽  
Niche Expansion ◽  
Niche Shifts ◽  
Dietary Transition ◽  
Dietary Niche ◽  
Functional Features ◽  
Gut Microorganisms ◽  
The Impact

Abstract Background Due to its central role in animal nutrition, the gut microbiota is likely a relevant factor shaping dietary niche shifts. We analysed both the impact and contribution of the gut microbiota to the dietary niche expansion of the only four bat species that have incorporated fish into their primarily arthropodophage diet. Results We first compared the taxonomic and functional features of the gut microbiota of the four piscivorous bats to that of 11 strictly arthropodophagous species using 16S rRNA targeted amplicon sequencing. Second, we increased the resolution of our analyses for one of the piscivorous bat species, namely Myotis capaccinii, and analysed multiple populations combining targeted approaches with shotgun sequencing. To better understand the origin of gut microorganisms, we also analysed the gut microbiota of their fish prey (Gambusia holbrooki). Our analyses showed that piscivorous bats carry a characteristic gut microbiota that differs from that of their strict arthropodophagous counterparts, in which the most relevant bacteria have been directly acquired from their fish prey. This characteristic microbiota exhibits enrichment of genes involved in vitamin biosynthesis, as well as complex carbohydrate and lipid metabolism, likely providing their hosts with an enhanced capacity to metabolise the glycosphingolipids and long-chain fatty acids that are particularly abundant in fish. Conclusions Our results depict the gut microbiota as a relevant element in facilitating the dietary transition from arthropodophagy to piscivory.

PROFILING OF GUAVA GENOTYPES GROWN IN VIDARBHA CONDITIONS ON THE BASIS OF MORPHOLOGICAL TRAITS

2017 ◽  
Vol 23 (1) ◽  
Author(s):  
R.A. PATIL ◽  
S.G. BHARAD ◽  
S.N. SAWANT
Keyword(s):  
Genetic Diversity ◽  
Genetic Variability ◽  
Morphological Traits ◽  
Considerable Extent ◽  
Fruit Traits ◽  
Breeding Programmes ◽  
Tree Leaf ◽  
Qualitative Characteristics ◽  
Intrapopulation Diversity

Assessment of genetic diversity in the available germplasm is the prerequisite for development of improved genotypes through planned breeding programmes. In the view of this Forty-eight genotypes of seedling origin guava along with 1 check (L-49/Sardar) collected and conserved at germplasm block, Main Garden, Department of Horticulture, Dr. P. D. A. University, Akola were evaluated for genetic variability and diversity based on the qualitative characteristics. The genotypes were evaluated for sixteen morphological traitsviz. tree, leaf, floral and fruit traits. Results Show considerable extent of variability amongst the 49 genotypes in each traits. A sizeable amount of intrapopulation diversity recorded can be used to identify diverse parents which can be utilized in hybridization programmes.

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