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Full-Text Articles in Life Sciences
Brown Treesnakes: A Potential Invasive Species For The United States, Samantha Sue Kahl, Scott E. Henke, Marc A. Hall, David K. Britton
Brown Treesnakes: A Potential Invasive Species For The United States, Samantha Sue Kahl, Scott E. Henke, Marc A. Hall, David K. Britton
Human–Wildlife Interactions
Brown treesnakes (ˆ) are mildly venomous, exotic snakes that have the potential to become an invasive species in North America, Hawaii, and the Commonwealth of the Northern Mariana Islands. The snake is native to northern and eastern Australia, New Guinea, and other islands of northern and western Melanesia. The snakes were first found outside their native range on Guam in 1953. The exact date they reached the island is uncertain, but they are believed to have arrived on military cargo transport vessels some time during or just after World War II. During the years that followed, the population of brown …
Determination Of The Spawning Season Of Bigmouth Sleeper In Puerto Rico By Examination Of Gonad Maturation And Reproductive Hormone Cycles, Nathan J. Harris, J. Wesley Neal, Todd D. Sink, Peter W. Perschbacher
Determination Of The Spawning Season Of Bigmouth Sleeper In Puerto Rico By Examination Of Gonad Maturation And Reproductive Hormone Cycles, Nathan J. Harris, J. Wesley Neal, Todd D. Sink, Peter W. Perschbacher
Gulf and Caribbean Research
Bigmouth sleepers, Gobiomorus dormitor, are diadromous fish that have potential for hatchery production as both food and sport fish and for conservation purposes. Understanding of bigmouth sleeper maturation and seasonal hormone cycling are necessary in order to realize hatchery production. Therefore, seasonal trends in gonadosomatic index (GSI) and plasma vitellogenin, estradiol, progesterone and total testosterone concentrations were examined in wild and captive populations in Puerto Rico during the presumed spawning season. The spawning season for wild river populations of bigmouth sleepers was protracted over several months, but peaks in male testosterone (6.5 ng/mL) and female vitellogenin (11.3 ng/mL), estradiol …
Reproduction Of The Root Vole (Microtus Oeconomus) At The Edge Of Its Distribution Range, Linas Balciauskas, Laima Balciauskiene, Agne Janonyte
Reproduction Of The Root Vole (Microtus Oeconomus) At The Edge Of Its Distribution Range, Linas Balciauskas, Laima Balciauskiene, Agne Janonyte
Turkish Journal of Zoology
Data on the reproduction of the root vole (Microtus oeconomus) in Lithuania, the margin of its geographic range, are presented in the context of litter size analysis. In Lithuania, the breeding season lasts from April until the end of October. The average litter size was 5.93 ± 0.11 (2-14), decreasing from a mean of 8.0 embryos in June to 4.3 in October, with 2-3 litters per year. The average body mass of breeding females was 40.4 ± 0.6 (16.5-77.0) g. However, 6.25% of females start breeding with a body mass of under 25 g. Litter size was found to increase …
On The Life History Of Spirlin Alburnoides Bipunctatus (Bloch, 1782) In The Qanat Of Uzineh, Northern Iran, Rahman Patimar, Mohsen Zare, Mehdi Hesam
On The Life History Of Spirlin Alburnoides Bipunctatus (Bloch, 1782) In The Qanat Of Uzineh, Northern Iran, Rahman Patimar, Mohsen Zare, Mehdi Hesam
Turkish Journal of Zoology
Within the wide distribution of spirlin in Iran, populations of this species inhabit a great variety of habitats, including qanats. We hypothesized that qanats may contribute to habitat-specific variation in the life history of the fish. To test this, a total of 240 specimens of Alburnoides bipunctatus, caught in the qanat of Uzineh (northern Iran) from October 2007 to August 2008, were examined for life history attributes. The population had a 5-year life cycle. The weight-length relationship (WLR) was estimated as W = 0.0068TL^{3.2559} for males, W = 0.0079TL^{3.2067} for females, and W = 0.0072TL^{3.2387} for the population, having a …
Evaluation Of The Possibility Of Using Oligosaccharide-Free Pea In Japanese Quail Nutrition, Danuta Szczerbinska, Zofia Tarasewicz, Piotr Gulewicz, Danuta Majewska, Marek Ligocki
Evaluation Of The Possibility Of Using Oligosaccharide-Free Pea In Japanese Quail Nutrition, Danuta Szczerbinska, Zofia Tarasewicz, Piotr Gulewicz, Danuta Majewska, Marek Ligocki
Turkish Journal of Veterinary & Animal Sciences
In this paper, evaluation of the effect of processed pea seeds (free of raffinose family oligosaccharides) on the performance traits and the results of reproduction in Japanese quails is presented. A flock of 72 quails was divided into 3 groups consisting of equal numbers of birds (18 females and 6 males). Birds were kept in cages in an environmentally controlled room with a lighting cycle of 17 h of light and 7 h of dark, and they were fed 1 of 3 different diets. Whereas diet 1 served as the control, diet 2 was supplemented with 5% and diet 3 …
Reproductive Biology Of Ludwigia Leptocarpa And L. Adscendens Subsp. Diffusa In Ile Ife, Nigeria, Matthew Oziegbe, Julius Olaoye Faluyi
Reproductive Biology Of Ludwigia Leptocarpa And L. Adscendens Subsp. Diffusa In Ile Ife, Nigeria, Matthew Oziegbe, Julius Olaoye Faluyi
Turkish Journal of Botany
Ludwigia L. (Onagraceae) species are known to be invasive in most parts of the world, serving as a threat to native plant species and blocking navigational channels. In Africa, they block waterways and are serious weeds in wet fields, most especially in rice paddies. The floral morphology, mode of sexual reproduction, and mechanism of fruit dispersal in water of L. leptocarpa (Nutt.) H.Hara and L. adscendens (L.) H.Hara subsp. diffusa (Forssk.) P.H.Raven were assessed in the Department of Botany of Obafemi Awolowo University, Ile Ife, Nigeria, from March 2006 to March 2009. L. leptocarpa produced cylindrical, hairy fruits of 34.80 …