Patterns of morphological traits shaping the feeding guilds in the intertidal mudflat fishes of Indian Sundarbans

2021 ◽  
Author(s):  
Anupam Podder ◽  
Soumyadip Panja ◽  
Atreyee Chaudhuri ◽  
Anwesha Roy ◽  
Missidona Biswas ◽  
...  
Keyword(s):  
Morphological Traits ◽  
Feeding Guilds ◽  
Intertidal Mudflat ◽  
Indian Sundarbans

Observations on the Feeding Ecology of Estuarine Nematodes

1997 ◽  
Vol 77 (1) ◽  
pp. 211-227 ◽  
Author(s):  
Tom Moens ◽  
Magda Vincx
Keyword(s):  
Prey Capture ◽  
Sensu Stricto ◽  
Food Sources ◽  
Feeding Strategies ◽  
Feeding Guilds ◽  
Intertidal Mudflat ◽  
Predatory Behaviour ◽  
Aquatic Nematodes ◽  
Predatory Strategy ◽  
Estuarine Nematodes

Observations on living estuarine nematodes show that previous feeding type classifications do not accurately represent the trophic structure of an intertidal mudflat in the Westerschelde Estuary (Netherlands). A new scheme with six major nematode feeding guilds is proposed: (1) microvores; (2) ciliate feeders; and (3) deposit feeders sensu stricto are all nematodes without a distinct buccal armature. In the first two groups bacteria and protozoa, respectively are the major particulate food sources, while other items are included in the diet of the third. The three other categories are recognized among the nematodes with a buccal armature: (4) epigrowth feeders; (5) facultative predators; and (6) predators. Diatoms and other microalgae are an important particulate food for many epigrowth feeders. The importance of bacteria as a food source for these nematodes remains poorly documented. A strictly or mainly predatory behaviour has been described for only few species from the study area. Several nematodes, however, are facultative predators. The predatory strategy of Calyptronema maxweberi, as described in this paper, suggests the use of a paralysing or lethal secretion in prey capture, which, to our knowledge, is the first report for aquatic nematodes. Furthermore, the importance of sources other than particulate food in free-living aquatic nematodes is stressed. Our observations show that many aquatic nematodes are in fact opportunistic feeders, which may change feeding strategies in response to available food.

scholarly journals Functional, size and taxonomic diversity of fish along a depth gradient in the deep sea

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e2387 ◽  
Author(s):  
Beth L. Mindel ◽  
Francis C. Neat ◽  
Clive N. Trueman ◽  
Thomas J. Webb ◽  
Julia L. Blanchard
Keyword(s):  
Species Richness ◽  
Continental Slope ◽  
Functional Diversity ◽  
Deep Sea ◽  
Morphological Traits ◽  
Fish Assemblages ◽  
Functional Divergence ◽  
Feeding Guilds ◽  
Functional Richness ◽  
Size Diversity

Biodiversity is well studied in ecology and the concept has been developed to include traits of species, rather than solely taxonomy, to better reflect the functional diversity of a system. The deep sea provides a natural environmental gradient within which to study changes in different diversity metrics, but traits of deep-sea fish are not widely known, hampering the application of functional diversity to this globally important system. We used morphological traits to determine the functional richness and functional divergence of demersal fish assemblages along the continental slope in the Northeast Atlantic, at depths of 300–2,000 m. We compared these metrics to size diversity based on individual body size and species richness. Functional richness and size diversity showed similar patterns, with the highest diversity at intermediate depths; functional divergence showed the opposite pattern, with the highest values at the shallowest and deepest parts of the study site. Species richness increased with depth. The functional implications of these patterns were deduced by examining depth-related changes in morphological traits and the dominance of feeding guilds as illustrated by stable isotope analyses. The patterns in diversity and the variation in certain morphological traits can potentially be explained by changes in the relative dominance of pelagic and benthic feeding guilds. All measures of diversity examined here suggest that the deep areas of the continental slope may be equally or more diverse than assemblages just beyond the continental shelf.

scholarly journals Seasonal dynamics of fish assemblages in an intertidal mudflat of Indian Sundarbans

2013 ◽  
Vol 77 (2) ◽  
pp. 301-311 ◽  
Author(s):  
Sumit Homechaudhuri ◽  
Atreyee Chaudhuri ◽  
Sudeshna Mukherjee
Keyword(s):  
Seasonal Dynamics ◽  
Fish Assemblages ◽  
Intertidal Mudflat ◽  
Indian Sundarbans

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.

Comparison of two methods of measuring the depth of the redox potential discontinuity in intertidal mudflat sediments

2013 ◽  
Vol 487 ◽  
pp. 7-13 ◽  
Author(s):  
TG Gerwing ◽  
AMA Gerwing ◽  
D Drolet ◽  
DJ Hamilton ◽  
MA Barbeau
Keyword(s):  
Redox Potential ◽  
Intertidal Mudflat ◽  
Mudflat Sediments

The Medieval Population of Mountainous Ingushetia According to Odontological Data

2019 ◽  
Vol 48 (4) ◽  
pp. 178-196
Author(s):  
Natalya A. Lejbova ◽  
Umalat B. Gadiev
Keyword(s):  
Morphological Traits ◽  
Dental Anthropology ◽  
Deep Roots ◽  
The Caucasus ◽  
New Material ◽  
The Republic ◽  
The Village ◽  
Medieval Population

Although population of the Caucasus has been studied in a rather detailed way, there are peoples whose anthropological portrait is still incomplete. Among them are the Ingush, one of the oldest autochthonous peoples of the Caucasus. This work presents new material on the dental anthropology of medieval Ingush, collected in 2017 during expeditions to the Jairakh and Sunzhen districts of the Republic of Ingushetia. In the Jairakh district, the investigations were carried out in the crypt complexes of the 15th–18th centuries – Targim, Agikal, Tsori, Salgi, and in Sunzhen region - in crypts near the village of Muzgan. The craniological series of medieval Ingush studied according to the dental anthropology program can be described as belonging to the western range of odontological complexes. Unlike most modern Caucasian groups, it does not belong to gracile forms, but rather to a maturized odontological variant, which has deep roots in the Caucasus. The results once again demonstrate a certain conservatism and stability of the dental system, which preserves morphological traits of ancestral groups longer than other anthropological systems.

Some morphological traits of Tarsus Çatalburun breed of Turkish hunting dog

2014 ◽  
Vol 30 (1) ◽  
pp. 25-25 ◽  
Author(s):  
Yusuf Ziya Oğrak ◽  
Atila Yoldaş ◽  
Milvoje Uroseviç ◽  
Darko Drobnjak
Keyword(s):  
Morphological Traits ◽  
Hunting Dog

COPPER AND ZINC INDUCED CHANGES IN SOYBEAN (Glycine max (L.) Merr.)

1970 ◽  
pp. 09
Author(s):  
K. SANKAR GANESH ◽  
P. SUNDARAMOORTHY
Keyword(s):  
Heavy Metals ◽  
Glycine Max ◽  
Aquatic Environment ◽  
Morphological Traits ◽  
Industrial Activities ◽  
Copper And Zinc ◽  
Glycine Max L ◽  
Zinc Concentrations ◽  
Induced Changes

Heavy metals are one of the most important pollutants released to the aquatic environment by the various industrial activities. The use of these wastewater for irrigation results accumulation of heavy metals in soil and plants. So, the present investigation deals with the various concentrations (0, 5, 10, 25, 50, 100, 200 and 300 mg/l) of copper and zinc on germination studies of soybean. The different concentrations of copper and zinc were used for germination studies. The seedlings were allowed to grow upto seven days. The studied morphological traits increased at 5 mg/l concentration and these parameters are gradually decreased with the increase of copper and zinc concentrations.

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