A Multivariate Study of the Relationship of Parental Age to Reproductive Success in California Gulls

Ecology ◽  
1983 ◽  
Vol 64 (4) ◽  
pp. 829-839 ◽  
Author(s):  
Bruce H. Pugesek ◽  
Kenneth L. Diem
Keyword(s):  
Reproductive Success ◽  
Parental Age ◽  
Multivariate Study ◽  
Relationship Of ◽  
The Relationship

The relationship of the female reproductive success of Eucalyptus globulus to the endogenous properties of the flower

2008 ◽  
Vol 22 (1) ◽  
pp. 37-44 ◽  
Author(s):  
Shaun Suitor ◽  
B. M. Potts ◽  
P. H. Brown ◽  
A. J. Gracie ◽  
P. L. Gore
Keyword(s):  
Reproductive Success ◽  
Eucalyptus Globulus ◽  
Female Reproductive Success ◽  
Relationship Of ◽  
The Relationship

DDE and reproductive success in some Alberta common terns

1973 ◽  
Vol 51 (10) ◽  
pp. 1081-1086 ◽  
Author(s):  
Bruce Switzer ◽  
Victor Lewin ◽  
Fred H. Wolfe
Keyword(s):  
Reproductive Success ◽  
Breeding Population ◽  
Sterna Hirundo ◽  
Eggshell Thickness ◽  
Common Terns ◽  
Relationship Of ◽  
The Relationship

A study of the relationship of DDE to reproductive success of an inland breeding population of common terns. Sterna hirundo, had been carried out in 1969 and 1970 at Chip Lake, Alberta. Although a continuing decrease of DDE residues in eggs bad occurred, eggshell thickness remained unchanged. In addition, reproductive success markedly increased in 1970; however, the percentage of eggs suffering breakage did not change between years. Low correlations between DDE and eggshell thickness or weight in both years suggest that DDE is unrelated to these eggshell parameters, which in turn are not related to reproductive success in this population.

Comparative effects of mites and lice on the reproductive success of rock doves (Columba livia)

Parasitology ◽  
1995 ◽  
Vol 110 (2) ◽  
pp. 195-206 ◽  
Author(s):  
D. H. Clayton ◽  
D. M. Tompkins
Keyword(s):  
Reproductive Success ◽  
Body Mass ◽  
Growth Rates ◽  
Columba Livia ◽  
Nestling Growth ◽  
Adult Body Mass ◽  
Evolution Of Virulence ◽  
Relationship Of ◽  
The Impact ◽  
The Relationship

SUMMARYWe report experimental data comparing the effects of Mesostigmatid mites and Ischnoceran lice on the reproductive performance of a single group of captive rock doves (Columba livia). Several components of host reproductive success were compared for the two groups, including number of eggs laid, hatching success, nestling growth rates, fledging success, post-fledging body mass and survival. Adult body mass and survival were also compared. There was a dramatic difference in the effects of the mites and lice. The former drove host reproductive success to zero, mainly by agitating adults and causing them to incubate eggs less faithfully. Nestling growth rates and post-fledging survival were also significantly reduced by mites. Lice showed no effect on reproductive success whatsoever, even though the feather damage they cause is known to have energetic consequences (Booth, Clayton & Block, 1993). Neither parasite had a significant effect on adult birds. Although Ischnocera are found on most species of birds, our results for lice constitute the first experimental test of the impact of Ischnocera on avian reproductive success (preliminary report by Clayton & Tompkins, 1994). We discuss reasons for the different effects of mites and lice, including the relationship of horizontal (mites) and vertical (lice) transmission to the evolution of virulence.

The relationship of seminal transforming growth factor-β1 and interleukin-18 with reproductive success in women exposed to seminal plasma during IVF/ICSI treatment

2016 ◽  
Vol 117 ◽  
pp. 45-51 ◽  
Author(s):  
Marina A. Nikolaeva ◽  
Alina A. Babayan ◽  
Elena O. Stepanova ◽  
Veronika Y. Smolnikova ◽  
Elena A. Kalinina ◽  
...  
Keyword(s):  
Growth Factor ◽  
Reproductive Success ◽  
Seminal Plasma ◽  
Transforming Growth Factor ◽  
Transforming Growth Factor Β1 ◽  
Interleukin 18 ◽  
Relationship Of ◽  
The Relationship

The Relationship of Pair-Bond Formation and Duration to Reproductive Success in Short-Tailed Shearwaters Puffinus tenuirostris

10.2307/5825 ◽  
1995 ◽  
Vol 64 (1) ◽  
pp. 31 ◽  
Author(s):  
J. S. Bradley ◽  
R. D. Wooller ◽  
I. J. Skira
Keyword(s):  
Reproductive Success ◽  
Bond Formation ◽  
Pair Bond ◽  
Puffinus Tenuirostris ◽  
Relationship Of ◽  
The Relationship

scholarly journals BREEDING SUCCESS OF BUFF-NECKED IBIS (Theristicus caudatus) (PELECANIFORMES: THRESKIORNITHIDAE) IN ARAUCARIA PLATEAU, RIO GRANDE DO SUL, BRAZIL.

2019 ◽  
Vol 16 (31) ◽  
pp. 831-836
Author(s):  
Renata De Boni DAL CORNO ◽  
Gustavo Francisco AVER ◽  
Maria Virginia PETRY
Keyword(s):  
Reproductive Success ◽  
Environmental Changes ◽  
Reproductive Period ◽  
Hatching Rate ◽  
History Of ◽  
Different Populations ◽  
Group B ◽  
Relationship Of ◽  
The Relationship ◽  
Source Of Information

The life history of a species can be considered the main source of information about it, parameters such as incubation period, number of eggs and chicks, may represent the aptitude of individuals in relation to the environment, modified or not. Thus information from the reproductive success of a species allows evaluating the relationship of individuals to environmental changes. This study aimed to assess the reproductive success of three different populations of Buff-necked ibis, Theristicus caudatus, in Araucaria Plateau. The groups were followed in the reproductive season of 2011, three breeding which had environmental characteristics different from each other. We used three methods to determine the reproductive success: apparent success, hatching rate of eggs and protocol of Mayfield. In 600 hours of observation during the reproductive period, approximately 200 hours for each group, there was an average of 1.87 ± 0.74 eggs per nest. The apparent success and the protocol of Mayfield showed proportional differences between the groups. The environment where individuals were nesting in group B can be considered a compromise between the characteristics of other groups, with anthropogenic characteristics that draw predators away from nests and feeding areas, while feeding sites has reduced external influences.

The relationship of the scleractinian corals to the rugose corals

Paleobiology ◽  
1980 ◽  
Vol 6 (02) ◽  
pp. 146-160 ◽  
Author(s):  
William A. Oliver
Keyword(s):  
Critical Points ◽  
Scleractinian Corals ◽  
Convincing Evidence ◽  
Early Triassic ◽  
Rugose Corals ◽  
History Of ◽  
The Subject ◽  
Relationship Of ◽  
The Relationship ◽  
Biologic Factors

The Mesozoic-Cenozoic coral Order Scleractinia has been suggested to have originated or evolved (1) by direct descent from the Paleozoic Order Rugosa or (2) by the development of a skeleton in members of one of the anemone groups that probably have existed throughout Phanerozoic time. In spite of much work on the subject, advocates of the direct descent hypothesis have failed to find convincing evidence of this relationship. Critical points are:(1) Rugosan septal insertion is serial; Scleractinian insertion is cyclic; no intermediate stages have been demonstrated. Apparent intermediates are Scleractinia having bilateral cyclic insertion or teratological Rugosa.(2) There is convincing evidence that the skeletons of many Rugosa were calcitic and none are known to be or to have been aragonitic. In contrast, the skeletons of all living Scleractinia are aragonitic and there is evidence that fossil Scleractinia were aragonitic also. The mineralogic difference is almost certainly due to intrinsic biologic factors.(3) No early Triassic corals of either group are known. This fact is not compelling (by itself) but is important in connection with points 1 and 2, because, given direct descent, both changes took place during this only stage in the history of the two groups in which there are no known corals.

Skeletal elements of crinoid echinoderms: High-resolution structural and microanalytical results

1983 ◽  
Vol 41 ◽  
pp. 194-195
Author(s):  
D. F. Blake ◽  
L. F. Allard ◽  
D. R. Peacor
Keyword(s):  
High Resolution ◽  
Marine Invertebrates ◽  
Sea Urchins ◽  
Structural Features ◽  
Sea Stars ◽  
High Resolution Tem ◽  
Relationship Of ◽  
The Relationship ◽  
Insight Into

Echinodermata is a phylum of marine invertebrates which has been extant since Cambrian time (c.a. 500 m.y. before the present). Modern examples of echinoderms include sea urchins, sea stars, and sea lilies (crinoids). The endoskeletons of echinoderms are composed of plates or ossicles (Fig. 1) which are with few exceptions, porous, single crystals of high-magnesian calcite. Despite their single crystal nature, fracture surfaces do not exhibit the near-perfect {10.4} cleavage characteristic of inorganic calcite. This paradoxical mix of biogenic and inorganic features has prompted much recent work on echinoderm skeletal crystallography. Furthermore, fossil echinoderm hard parts comprise a volumetrically significant portion of some marine limestones sequences. The ultrastructural and microchemical characterization of modern skeletal material should lend insight into: 1). The nature of the biogenic processes involved, for example, the relationship of Mg heterogeneity to morphological and structural features in modern echinoderm material, and 2). The nature of the diagenetic changes undergone by their ancient, fossilized counterparts. In this study, high resolution TEM (HRTEM), high voltage TEM (HVTEM), and STEM microanalysis are used to characterize tha ultrastructural and microchemical composition of skeletal elements of the modern crinoid Neocrinus blakei.

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