Elevation of vitellogenin expression in Sunn pest is associated with pre‐migration and migration phases of the life cycle

2021 ◽  
Vol 46 (1) ◽  
pp. 94-104
Author(s):  
Asli Dageri ◽  
Nurper Guz ◽  
Mehmet Oktay Gurkan
Keyword(s):  
Life Cycle ◽  
Sunn Pest ◽  
And Migration

scholarly journals Hard times for catadromous fish: the case of the European eel (Anguilla anguilla, L. 1758)

2021 ◽  
Vol 12 (2) ◽  
Author(s):  
Cinzia Podda ◽  
Andrea Sabatini ◽  
Francesco Palmas ◽  
Antonio Pusceddu
Keyword(s):  
Life Cycle ◽  
Anguilla Anguilla ◽  
Cultural Value ◽  
European Eel ◽  
Migration Patterns ◽  
Habitat Occupancy ◽  
Hard Times ◽  
Ancient Times ◽  
And Migration ◽  
Anthropogenic Threats

Catadromous fish species are very important organisms for their ecological, economical, and cultural value. For its complex life species catadromous fish result in worldwide decline since the beginning of the 20th century. Among the most iconic catadromous species, the European eel Anguilla anguilla L. 1758 has aroused considerable interest since very ancient times. Because, to date, many aspects of their life cycle remain relatively unknown, to implement our knowledge about the main natural and anthropogenic threats to its survivorship and identify possible solutions to preserve it, in this narrative review, we present the state of the knowledge about the life cycle, habitat occupancy, recruitment, and migration patterns of the European eel and about the major threats most likely have contributed to the decline of eels’ populations.

Amenities and Migration over the Life-Cycle

1982 ◽  
pp. 211-221 ◽  
Author(s):  
PHILIP E. GRAVES ◽  
JOANNA REGULSKA
Keyword(s):  
Life Cycle ◽  
And Migration

scholarly journals DIFFERENTIATION OF MONOCYTES

1971 ◽  
Vol 50 (2) ◽  
pp. 498-515 ◽  
Author(s):  
Barbara A. Nichols ◽  
Dorothy Ford Bainton ◽  
Marilyn G. Farquhar
Keyword(s):  
Bone Marrow ◽  
Life Cycle ◽  
Guinea Pig ◽  
Golgi Complex ◽  
Lysosomal Enzymes ◽  
Coated Vesicles ◽  
Blood Monocytes ◽  
Rough Er ◽  
Secretory Products ◽  
And Migration

The origin, content, and fate of azurophil granules of blood monocytes were investigated in several species (rabbit, guinea pig, human) by electron microscopy and cytochemistry. The life cycle of monocytes consists of maturation in bone marrow, transit in blood, and migration into tissues where they function as macrophages. Cells were examined from all three phases. It was found that: azurophil granules originate in the Golgi complex of the developing monocyte of bone marrow and blood, and ultimately fuse with phagosomes during phagocytosis upon arrival of monocytes in the tissues. They contain lysosomal enzymes in all species studied and peroxidase in the guinea pig and human. These enzymes are produced by the same pathway as other secretory products (i.e., they are segregated in the rough ER and packaged into granules in the Golgi complex). The findings demonstrate that the azurophil granules of monocytes are primary lysosomes or storage granules comparable to the azurophils of polymorphonuclear leukocytes and the specific granules of eosinophils. Macrophages from peritoneal exudates (72–96 hr after endotoxin injection) contain large quantities of lysosomal enzymes throughout the secretory apparatus (rough ER and Golgi complex), in digestive vacuoles, and in numerous coated vesicles; however, they lack forming or mature azurophil granules. Hence it appears that the monocyte produces two types of primary lysosomes during different phases of its life cycle—azurophil granules made by developing monocytes in bone marrow or blood, and coated vesicles made by macrophages in tissues and body cavities.

Moult intensity and chronology of Tundra Swans during spring and fall migration at Long Point, Lake Erie, Ontario

2003 ◽  
Vol 81 (6) ◽  
pp. 1057-1062 ◽  
Author(s):  
G Eoin Craigie ◽  
Scott A Petrie
Keyword(s):  
Life Cycle ◽  
Annual Cycle ◽  
Lake Erie ◽  
Age Classes ◽  
Seasonal Differences ◽  
Brood Rearing ◽  
Cygnus Columbianus ◽  
Males And Females ◽  
Breeding Plumage ◽  
And Migration

Moult intensity and chronology in staging Eastern-Population (EP) Tundra Swans (Cygnus columbianus columbianus) were studied during spring in 1999 and 2000 (n = 35) and during fall in 1999, 2000, and 2001 (n = 47) at Long Point, Lake Erie, Ontario. To test for age, sex, and seasonal differences in moult intensity, 20 feather regions were scored according to the proportion of growing feathers. Adult, subadult, and juvenile Tundra Swans moulted contour feathers at low intensities during spring and fall. Males and females of all three age classes had similar patterns and intensities of moult during spring and fall. Shared costs of incubation and brood rearing, perennial monogamy, and lack of a breeding plumage could be some of the pressures selecting for intersexual similarities in feather replacement during migration. Adult, subadult, and juvenile Tundra Swans moulted more intensively during fall than spring. Larger lipid reserves and seasonal dietary differences may allow fall-staging Tundra Swans to moult more intensively than spring-staging birds at Long Point. Overlap of nutritionally costly events (moult and migration) may be necessary as Tundra Swans spend half of their annual cycle on spring and fall staging areas. However, reduced daily nutritional costs associated with moulting at low intensities and migrating slowly apparently permits the overlap of these two life-cycle events.

LIFE CYCLE AND MIGRATION TO URBAN AND RURAL AREAS: ESTIMATION OF A MIXED LOGIT MODEL ON FRENCH DATA*

2008 ◽  
Vol 48 (4) ◽  
pp. 789-824 ◽  
Author(s):  
Cécile Détang-Dessendre ◽  
Florence Goffette-Nagot ◽  
Virginie Piguet
Keyword(s):  
Life Cycle ◽  
Rural Areas ◽  
Logit Model ◽  
Mixed Logit ◽  
Mixed Logit Model ◽  
Urban And Rural Areas ◽  
And Migration

Constructing a sense of home: Place affiliation and migration across the life cycle

1993 ◽  
Vol 8 (4) ◽  
pp. 547-572 ◽  
Author(s):  
Lee Cuba ◽  
David M. Hummon
Keyword(s):  
Life Cycle ◽  
And Migration ◽  
Sense Of Home
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