Reproduction in the curly-tailed lizard Leiocephalus psammodromus from the Caicos Islands

1993 ◽  
Vol 71 (11) ◽  
pp. 2147-2151 ◽  
Author(s):  
Geoffrey R. Smith ◽  
John B. Iverson
Keyword(s):  
West Indies ◽  
Fat Body ◽  
Size Structure ◽  
Egg Laying ◽  
Egg Mass ◽  
British West Indies ◽  
Female Reproduction ◽  
Wet Season ◽  
Males And Females ◽  
Fat Body Mass

Reproduction and population structure were examined for the curly-tailed lizard Leiocephalus psammodromus from the Caicos Islands, British West Indies, from 1973 to 1978. Females and males mature at about 65–70 and 75–80 mm snout–vent length, respectively, and at about 1.5–2 years of age. Both male and female reproduction were seasonal, with egg-laying beginning late in the dry season (late April) and ending well into the wet season (September), with hatching during the wet season (late June to December). Multiple annual clutches are probably produced. Clutch size was typically two eggs (mean = 1.72 for 42 clutches). Eggs (preserved) averaged 19.9 × 9.2 mm, and mean preserved egg mass was 1.04 g. Fat-body mass in both males and females decreases with the onset of the reproductive season. The age/size structure of the population varied from month to month, depending on recruitment of hatchlings. Reproduction in Leiocephalus psammodromus is similar to that of other tropical lizards in seasonal environments.

Reproductive tactics of Ameiva ameiva (Lacertilia: Teiidae) in a seasonally fluctuating tropical habitat

1982 ◽  
Vol 60 (12) ◽  
pp. 3113-3120 ◽  
Author(s):  
Laurie J. Vitt
Keyword(s):  
Body Mass ◽  
Egg Size ◽  
Fat Body ◽  
Reproductive Activity ◽  
Female Size ◽  
Northeast Brazil ◽  
Reproductive Tactics ◽  
Males And Females ◽  
Fat Bodies ◽  
Fat Body Mass

The reproductive ecology of Ameiva ameiva was studied for 12 months in a caatinga habitat of northeast Brazil. Even though rainfall was seasonal, the female reproductive cycle was not associated with this seasonality. Females reproduced year-round, with peak reproductive periods during August–October and January–February. Clutch size ranged from one to nine and was correlated to female size but egg size was constant. Males showed evidence of reproductive activity throughout the year. Fat body mass of males and females varied greatly among individuals. There was no association between fat storage and wet–dry seasonality. In females, fat body mass tended to decrease during peak reproductive periods. Most striking was the observation that 97.8% of all adult Ameiva possessed enlarged fat bodies, suggesting that resource periods low enough to affect reproduction did not exist during 1977–1978. The reproductive tactics of Ameiva were similar to those of other tropical macroteiids, regardless of their distribution, but very different than reproductive tactics of sympatric iguanid lizards. Compared with iguanid lizards, resources may be less limiting for macroteiids because their widely foraging behavior for prey acquisition may allow them to find rich patches of resources which would be unavailable to habitat specific sit-and-wait foragers, like most iguanid lizards.

Studies on the maize stem borer, Busseola fusca (Lepidoptera: Noctuidae) and its major parasitoid, Dolichogenidea fuscivora (Hymenoptera: Braconidae), in eastern Ethiopia

1997 ◽  
Vol 87 (3) ◽  
pp. 319-324 ◽  
Author(s):  
K. Yitaferu ◽  
A. K. Walker
Keyword(s):  
Sex Ratio ◽  
Busseola Fusca ◽  
Stem Borer ◽  
Egg Laying ◽  
Wet Season ◽  
Single Female ◽  
Eastern Ethiopia ◽  
Larval Parasitoid ◽  
Males And Females ◽  
Lepidoptera Noctuidae

AbstractStudies on the lepidopterous stem borer, Busseola fusca (Fuller) and its major larval parasitoid, Dolichogenidea fuscivora Walker were carried out in the field and the laboratory in eastern Ethiopia. Larvae of B. fusca are also parasitized in the field by the braconid, Bracon sesamiae Cameron and the sarcophagid, Sarcophaga sp., but in low numbers. Parasitism of B. fusca by D. fuscivora is as high as 71% during the dry season (November-March) and approximately 18% in the wet season (June-September). Dolichogenidea fuscivora is active throughout the year. In the laboratory it requires nearly 26 days at 24 ± 1°C to complete the development of one generation (egg to egg laying). Longevity of adults is affected by the availability of food and water. Mating and oviposition reduced the life spans of males and females, respectively. Sixty five to 75 larvae emerged from eggs laid by a single female. The sex ratio ranged from 1:1 to 7:1 (female:male), the average being 5:1.

Carbonate Environments and Sequences of Caicos Platform: Caicos, British West Indies to Miami, Florida, July 20–26, 1989

10.1029/ft374 ◽  
1989 ◽  
Author(s):  
Harold R. Wanless ◽  
Jeffrey J. Dravis ◽  
Lenore P. Tedesco ◽  
Victor Rossinsky
Keyword(s):  
West Indies ◽  
British West Indies

Probiotics in the diets of laying quails

2020 ◽  
pp. 60-66
Author(s):  
O. Merzlyakova ◽  
V. Rogachyev ◽  
V. Chegodaev
Keyword(s):  
Bacillus Subtilis ◽  
Bacillus Licheniformis ◽  
Egg Production ◽  
Positive Impact ◽  
Hematological Parameters ◽  
Economic Effect ◽  
Egg Laying ◽  
Control Group ◽  
Egg Mass ◽  
The Cost

The efficiency of introducing probiotics based on strains of Bacillus subtilis, Bacillus licheniformis and their consortium in the amount of 150 g/t of feed into the diets of laying quails has been studied. The experiment lasting 182 days has been carried out on four groups of quails with 30 heads in each. The quails have been housed in the broiler battery in compliance with the required microclimate conditions. Quails of all groups have been received the main diet (compound feed) developed taking into account their age and physiological characteristics. The quails of the 1st, 2nd and 3rd experimental groups in addition to the main diet received probiotics (150 g/t compound feed) based on strains Bacillus subtilis, Bacillus licheniformis and their consortium, respectively. It has been found that feeding the laying quails of the consortium of strains Bacillus subtilis and Bacillus licheniformis had the most significant positive impact on their productive performance, it allowed to increase egg production by 7,81 %, egg laying intensity by 5,0 %, egg mass yield by 9,77 %, while reducing feed expenditures for 10 eggs by 13,35 %. The yield of hatching eggs has been increased by 7,03 %, hatchability of chickens from laid and fertilized eggs by 8,33 and 8,35 %, brooding waste decreased by 21,74 %. Hematological parameters of quails during the whole experiment were within the physiological norm. The economic effect calculated on the basis of data on the cost of compound feed, probiotics and the cost of sold eggs of quail laying was 14,56 % in the 3rd experimental group (in relation to the control group).

Selenium Role in Reproduction, Pregnant/Postpartum Women and Neonates: A Current Study

2020 ◽  
Vol 17 (1) ◽  
pp. 28-37
Author(s):  
Tabinda Sattar
Keyword(s):  
Infant Development ◽  
Selenium Deficiency ◽  
Human Reproduction ◽  
Postpartum Women ◽  
Female Reproduction ◽  
Pregnancy And Lactation ◽  
Males And Females ◽  
One Year ◽  
Selenium Supplements

Background: Selenium is a micronutrient, although required in low amounts, its importance in male and female reproduction is well known. Objectives: The core purpose of this study is to evaluate the role of selenium in human reproduction, during pregnancy/ lactation in women and newborns. The review explains side by side the sources of selenium, required amounts of selenium in humans and during pregnancy or lactation. Methods: Selenium deficiency is a major cause of male infertility. Similarly, selenium deficiency, both in pregnant and postpartum women, would greatly affect the health of the newborn baby in all respects. The effect of maternal selenium upon the fetus and the neonates even one year after birth has been explained with some recent examples. Results: The study elaborates the fact that the selenium deficiency in pregnancy and lactation is common due to fetal/infant development, so selenium supplements must be provided in order to overcome these deficiency symptoms. Conclusions: The better reproductive health in humans is possible due to the sufficient amounts of selenium present both in males and females as well.

scholarly journals Looking for Agency in Transnational Refugee Trajectories during the Second World War - Eric T. Jennings. Escape from Vichy: The Refugee Exodus to the French Caribbean. Cambridge, Mass.: Harvard University Press, 2018. 308 pages. ISBN: 9780674983380, $36. - Megan Koreman. The Escape Line: How the Ordinary Heroes of Dutch-Paris Resisted the Nazi Occupation of Western Europe. New York: Oxford University Press, 2018. 410 pages. 9780190662271, $29,95. - Joanna Newman. Nearly the New World: The British West Indies and the Flight from Nazism, 1933–1945. New York: Berghahn Books, 2019. 306 pages. 9781789206494, $29,95.

Itinerario ◽  
2021 ◽  
Vol 45 (1) ◽  
pp. 174-187
Author(s):  
Rosa de Jong
Keyword(s):  
New York ◽  
West Indies ◽  
Western Europe ◽  
New World ◽  
French Caribbean ◽  
British West Indies ◽  
Oxford University ◽  
Jewish Refugees ◽  
The Government ◽  
Flight Route

AbstractThe authors of three recent monographs, The Escape Line, Escape from Vichy, and Nearly the New World, highlight in particular the relevance of transnational refugee and resistance networks. These books shed new light on the trajectories of refugees through war-torn Europe and their routes out of it. Megan Koreman displays in The Escape Line the relevance of researching one line of resistance functioning in several countries and thereby shifts from the common nationalistic approach in resistance research. In Escape from Vichy Eric Jennings researches the government-endorsed flight route between Marseille and Martinique and explores the lasting impact of encounters between refugees and Caribbean Negritude thinkers. Joanna Newman explores the mainly Jewish refugees who found shelter in the British West Indies, with a focus on the role of aid organisations in this flight.

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