scholarly journals Grey seal diet analysis in Ireland highlights the importance of using multiple diagnostic features

2014 ◽  
Vol 20 (2) ◽  
pp. 155-167 ◽  
Author(s):  
M Gosch ◽  
G Hernandez-Milian ◽  
E Rogan ◽  
M Jessopp ◽  
M Cronin
Keyword(s):  
Diet Analysis ◽  
Grey Seal ◽  
Diagnostic Features ◽  
Seal Diet

Utilizing next-generation sequencing to identify prey DNA in western North Atlantic grey seal Halichoerus grypus diet

2020 ◽  
Vol 655 ◽  
pp. 227-240
Author(s):  
KR Flanders ◽  
ZH Olson ◽  
KA Ono
Keyword(s):  
Next Generation Sequencing ◽  
Feeding Habits ◽  
Atlantic Menhaden ◽  
Halichoerus Grypus ◽  
Frequency Of Occurrence ◽  
Grey Seal ◽  
Next Generation ◽  
Significant Difference ◽  
Generation Sequencing ◽  
Seal Diet

Increasing grey seal Halichoerus grypus abundance in coastal New England is leading to social, political, economic, and ecological controversies. Central to these issues is the foraging ecology and diet composition of the seals. We studied grey seal feeding habits through next-generation sequencing of prey DNA using 16S amplicons from seal scat (n = 74) collected from a breeding colony on Monomoy Island in Massachusetts, USA, and report frequency of occurrence and relative read abundance. We also assigned seal sex to scat samples using a revised PCR assay. In contrast to current understanding of grey seal diet from hard parts and fatty acid analysis, we found no significant difference between male and female diet measured by alpha and beta diversity. Overall, we detected 24 prey groups, 18 of which resolved to species. Sand lance Ammodytes spp. were the most frequently consumed prey group, with a frequency of occurrence (FO) of 97.3%, consistent with previous studies, but Atlantic menhaden Brevoortia tyrannus, the second most frequently consumed species (FO = 60.8%), has not previously been documented in US grey seal diet. Our results suggest that a metabarcoding approach to seal food habits can yield important new ecological insights, but that traditional hard parts analysis does not underestimate consumption of Atlantic cod Gadus morhua (FO = 6.7%, Gadidae spp.) and salmon Salmo salar (FO = 0%), 2 particularly valuable species of concern.

scholarly journals Diet of harbour seals and great cormorants in Limfjord, Denmark: interspecific competition and interaction with fishery

2007 ◽  
Vol 64 (6) ◽  
pp. 1235-1245 ◽  
Author(s):  
Signe M. Andersen ◽  
Jonas Teilmann ◽  
Pernille B. Harders ◽  
Else H. Hansen ◽  
Dorthe Hjøllund
Keyword(s):  
Interspecific Competition ◽  
Prey Species ◽  
Water System ◽  
Open Water ◽  
Diet Analysis ◽  
Atlantic Herring ◽  
Harbour Seals ◽  
Closed Water ◽  
Great Cormorants ◽  
Seal Diet

Abstract Andersen, S. M., Teilmann, J., Harders, P. B., Hansen, E. H., and Hjøllund, D. 2007. Diet of harbour seals and great cormorants in Limfjord, Denmark: interspecific competition and interaction with fishery. – ICES Journal of Marine Science, 64: 1235–1245. Comparative studies on seasonal and regional variation in the diet of harbour seals and great cormorants were conducted in Limfjord, a semi-closed water system in northwest Denmark. To compare harbour seal diet from an open water system containing similar prey species, a small diet analysis from the western Baltic is included. Seal diet during spring reflected the abundance of Atlantic herring entering Limfjord to spawn (90% of the weight consumed), whereas during summer and autumn, seal diet was rather more mixed. The diet of seals in the Rødsand area and cormorants in Limfjord showed no marked seasonal trends. During spring, there was little overlap between seal and cormorant diets in Limfjord because seals fed almost exclusively on Atlantic herring, and they consumed significantly larger herring than did the cormorants. During summer and autumn, seal and cormorant diets overlapped markedly, although the fish items consumed by seals were generally larger. Few commercially targeted species were found in the stomachs and scats of seals and casts of great cormorants, but Atlantic herring were taken by the seals at a size greater than that allowed by the fishery.

A New Species of Eugenia subg. Pseudeugenia (Myrtaceae, Myrteae) from Brazilian Atlantic Forest

2020 ◽  
Vol 45 (3) ◽  
pp. 537-543
Author(s):  
Karinne Sampaio Valdemarin ◽  
Jair Eustáquio Quintino Faria ◽  
Fiorella Fernanda Mazine ◽  
Vinicius Castro Souza
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Conservation Status ◽  
Forest Vegetation ◽  
Vegetation Types ◽  
Flower Buds ◽  
Diagnostic Features ◽  
Closely Related Species ◽  
Lowland Forests ◽  
A New Species

Abstract—A new species of Eugenia from the Atlantic forest of Brazil is described and illustrated. Eugenia flavicarpa is restricted to the Floresta de Tabuleiro (lowland forests) of Espírito Santo state and is nested in Eugenia subg. Pseudeugenia. Considering all other species of the subgenus that occur in forest vegetation types of the Atlantic forest phytogeographic domain, Eugenia flavicarpa can be distinguished mainly by the combination of smooth leaves with indumentum on both surfaces, with two marginal veins, usually ramiflorous inflorescences, pedicels 4.5‐9.7 mm long, flower buds 3.5‐4 mm in diameter, and by the calyx lobes that are 2‐3 mm long with rounded to obtuse apices. Morphological analyses were performed to explore the significance of quantitative diagnostic features between the new species and the closely related species, Eugenia farneyi. Notes on the habitat, distribution, phenology, and conservation status of Eugenia flavicarpa are provided, as well as a key for all species of Eugenia subg. Pseudeugenia from forest vegetation of the Atlantic forest phytogeographic domain.

Using stomach contents for diet analysis of carnivores through DNA barcoding

2015 ◽  
Vol 11 (1) ◽  
Author(s):  
Teresa Santos ◽  
Carlos Fonseca ◽  
Tânia Barros ◽  
Raquel Godinho ◽  
Cristiane Bastos-Silveira ◽  
...  
Keyword(s):  
Dna Barcoding ◽  
Stomach Contents ◽  
Diet Analysis

Diagnostic features of pancreatitis in chronic kidney disease in children

Pediatru ro ◽  
2018 ◽  
Vol 4 (52) ◽  
pp. 33
Author(s):  
Felicia Galoş ◽  
Anca Orzan ◽  
Cătălin Boboc ◽  
Mălina Anghel ◽  
Mihai Munteanu ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Kidney Disease ◽  
Diagnostic Features

Cesarean scar defects: diagnosis and treatment in non-pregnant women

GYNECOLOGY ◽  
2020 ◽  
Vol 22 (3) ◽  
pp. 6-10
Author(s):  
Sergey A. Martynov
Keyword(s):  
Magnetic Resonance Imaging ◽  
Surgical Treatment ◽  
Magnetic Resonance ◽  
Genital Tract ◽  
Conservative Therapy ◽  
Clinical Manifestations ◽  
Subsequent Pregnancy ◽  
Resonance Imaging ◽  
Diagnostic Features ◽  
Pregnancy And Childbirth

The aim of the review was to summarize information on clinical manifestations, diagnostic features, as well as methods for correction of scar defects after cesarean section (CS) outside pregnancy. Lack of the scar after CS, niche, isthmocele are a myometrium defect in the area of scar after CS, which is most often detected by ultrasound, sonohysterography or magnetic resonance imaging and is manifested by postmenstrual bleeding from the genital tract. In some cases, it can cause menorrhagia, dyspareunia, pelvic pain, infertility, uterine rupture during subsequent pregnancy and childbirth. Conservative therapy or surgical treatment with laparoscopy, laparotomy or vaginal approach is carried out depending on the symptoms, size of the defect, the thickness of the residual myometrium, as well as the womans reproductive plans.

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