Life Sciences Commons^™

On The Oviposition Of Homonota Aff. Darwinii In The Puna Region Of The Central Andes Of Argentina, Franco Valdez Ovallez, Rodrigo Gómez Alés, Rodrigo Nieva Cocilio, Tomás Martínez, Juan Carlos Acosta, José Villavicencio, Graciela Blanco

Turkish Journal of Zoology

Communal nest egg-laying refers to females laying their eggs with those of their conspecifics under or within artificial or natural structures. Homonota aff. darwinii is a recently discovered species that has not yet been formally described. The objective of this work is to characterise the oviposition of this species in the Puna region in the Central Andes of Argentina. We recorded the type and surface of the rocks where the eggs were laid, the temperature of the substrate, and the temperature of the rock surface facing the substrate. In addition, we recorded the daily temperature variation that a randomly selected …

The Molecular Regulators, Pathways, And Environmental Impacts Of White Flowers, Sagheer Ahmad, Zaibun Nisa, Muhammad Zeeshan Munir, Muhammad Imran, Shaista Nosheen, Kai Zhao

Turkish Journal of Agriculture and Forestry

White flowers are an important element of natural beauty, although they are thought of colorless. Anthocyanins are the major compounds responsible for a variety of pigments in flowers. White flowers surely lack pigmented anthocyanins and other compounds, but there are regulatory mechanisms that hinder the deposition of color pigments in white flowers. Moreover, there are also some compounds that deposit to instigate white appearance and the genetic regulators control the biosynthesis and deposition of such compounds. Experts have shown that fluctuation in the equilibrium of FLS and DFR genes determines the degree of accumulation of anthocyanins and flavonols in the …

2023 Cattlemen’S Day Full Report, Liz Boyle

Kansas Agricultural Experiment Station Research Reports

This report includes research conducted in 2022 on beef cattle management, reproduction, nutrition, and meat science conducted at Kansas State University.

Climate Impacts On North American Quail, Shelby M. Perry, Erin Moser, Jeffrey G. Whitt, Kelly S. Reyna

National Quail Symposium Proceedings

North America’s quail population trends are often linked to regional climate. Extreme climate events such as severe drought, hard freezes, or excessive winter precipitation can reduce quail populations by as much as 84%. Above-average spring and summer temperatures coincident with drought can reduce the laying season for quail by ≤60 days. Exposure of quail eggs to high temperatures during preincubation can initiate and alter embryonic development. Here, we review the impacts of extreme climate events and a changing climate on the survival, reproduction, and population trends of 6 North American quail species: California quail (Callipepla californica), Gambel’s quail …

Applying Multistate Mark-Recapture Models With State Uncertainty To Estimate Survival And Reproduction Of Quail, Rebekah E. Ruzicka

National Quail Symposium Proceedings

Obtaining unbiased estimates of vital rates and understanding how vital rates change in response to environmental stimuli are a continual pursuit of ecologists. Multistate mark-recapture (MSMR) models provide a flexible framework for evaluating dependent vital rates in a comprehensive analysis. For example, a bird must remain alive during breeding season to initiate a nest (i.e., transition from a nonbreeding to a breeding state); thus, the probability that a bird initiates a nest is dependent on the probability that it is still alive. Traditional MSMR models allow only for the estimation of survival, detection, and state transition parameters and depend on …

Survival, Movement, And Habitat Use Of Translocated Northern Bobwhite In Texas, Ricardo Cagigal Perez, Nova J. Silvy, Brian L. Pierce, Therese A. Catanach

National Quail Symposium Proceedings

For decades there has been a noticeable decline in northern bobwhite (Colinus virginianus; hereafter, bobwhite) populations. Few studies have assessed the survival of translocated bobwhite. We evaluated the effectiveness of reintroduction of bobwhite into the Texas (USA) Parks and Wildlife Department’s Gus Engeling Wildlife Management Area (GEWMA), where they had been extirpated but now have suitable habitat. Before reintroduction, GEWMA was surveyed (spring call counts) to make sure no bobwhite were present. Forty-six bobwhite were trapped from March–April 2019 in South Texas, banded, bled, radio-tagged, transported to GEWMA, and released. In addition, 17 bobwhite were trapped banded, bled, …

Breeding Season Survival And Reproduction In A High-Density Bobwhite Population: A Case Study, William E. Palmer, Shane D. Wellendorf, D. Clay Sisson

National Quail Symposium Proceedings

The demographic behavior of northern bobwhite (Colinus virginianus; hereafter, bobwhite) populations at high densities could provide important insights into why bobwhite populations fluctuate. Therefore, we documented breeding season demographics of bobwhites to understand how prebreeding density influenced reproductive effort and postbreeding density on an intensively managed property in Leon County, Florida, USA, 2002–2006. We estimated prebreeding bobwhite density each April using multi-observer strip-transects and postbreeding densities each November using covey call grid surveys. We radio-tagged 217 bobwhites in March and located bobwhites at least 5 days/week, 15 April–30 September to determine vital rates. Prebreeding density ranged from 1.5–8.6 …

Seasonal Testicular Histology And Acystic Lobular Spermatogenesis In The Western Lesser Siren, Siren Intermedia Nettingi (Caudata: Sirenidae), Stanley E. Trauth

Journal of the Arkansas Academy of Science

I investigated the seasonal testicular histology and acystic lobular spermatogenesis in the Western Lesser Siren, Siren intermedia nettingi, from periodic sampling of this salamander over a span of 21 yr (1994-2015) in northeastern Arkansas. My results include the following general findings: 1) the largest testicular lobules occurred primarily in January-February during spermiogenesis and spermatozoa maturation; 2) lobular regression and spermatogenic cell recrudescence were underway by late March; 3) proliferation of secondary spermatogonia in lobules was prominent in May; 4) transformation of secondary spermatogonia into primary spermatocytes occurred by mid-July, and these cells became larger in diameter through increased nuclear …

Life History Of Swordfish, Xiphias Gladius, Caught In The Northern Gulf Of Mexico, Anna K. Millender, Jeremy M. Higgs, Nancy J. Brown-Peterson, Michael J. Andres, James S. Franks

Gulf and Caribbean Research

The current study examined 93 Swordfish, Xiphias gladius, (64 females, 27 males, 2 unknown) ranging in size from 77.6–246.3 cm lower jaw fork length (LJFL) from the northern Gulf of Mexico (GOM). Samples were collected between March and August in 2005–2007, 2017–2019 and 2021. Age estimates of 51 Swordfish resulted in a maximum observed age of 11 years (205.0 cm LJFL) and 7 years (190.4 cm LJFL) for females and males, respectively. Observed and back—calculated length—at—age data were fitted to 4 growth models (2— and 3— parameter von Bertalanffy, Gompertz, and logistic). The 2—parameter von Bertalanffy was the model …

Androgenic Hormones In Crustacean Aquaculture: A Review, Muzaffer Mustafa Harlioğlu, Ardavan Farhadi̇

Turkish Journal of Zoology

Increased demands of the seafood market have led to the rapid growth in crustacean aquaculture production in various parts of the world. Therefore, an expansion in the knowledge of the reproductive biology of crustaceans has become more important. Hormones released from the androgenic gland (AG) in crustaceans are liable for both the separation of primary and secondary sexual features and reproductive behavior. AG removal in male crustaceans causes a transformation of the intersex animals towards the females and a degeneration of spermatids and reproductive organs. AG implantation and injection of AG extracts are common approaches for crustacean masculinization. In this …

Field Trial Assessing The Use Of Sex-Sorted Semen In Beef Cattle, K. W. Aubuchon, J. A. Odde, C. Bronkhorst, E. M. Bortoluzzi, M. J. Goering, K. E. Fike, K. G. Odde

Kansas Agricultural Experiment Station Research Reports

Objective:The objective was to evaluate the reproductive performance of sex-sorted semen on beef cows and heifers.

Study Description:For this trial, 320 Angus and SimAngus cows and heifers from four groups were used. Group 1 yearling heifers (n = 101) were synchronized using the melengestrol acetate plus prostaglandin F_2α(MGA-PGF_2α) protocol and Groups 2, 3, and 4 cows (n = 219) were synchronized using the 7-Day CO-Synch + CIDR protocol. Insemination was done with semen from an Angus sire (Group 1 yearling heifers and Group 2 young cows) sorted to contain>90% X-bearing sperm, or a …

Cattlemen's Day 2022, Beef Cattle Research

Kansas Agricultural Experiment Station Research Reports

This report includes research on beef cattle management, reproduction, nutrition, and meat science conducted at Kansas State University.

Novel Reproductive Data On Pealip Redhorse, Moxostoma Pisolabrum (Cypriniformes: Catostomidae), From Northeastern Arkansas, Chris T. Mcallister, Henry W. Robison, Ethan T. Woodyard, Thomas Graham Rosser, Thomas J. Fayton

Journal of the Arkansas Academy of Science

Little is known about the natural history of the Pealip Redhorse (Moxostoma pisolabrum), particularly on its reproductive biology in Arkansas. We examined 11 female M. pisolabrum collected in late February 2020 and 2021 from the Black River, Lawrence County. Egg mass (g) represented 9‒14% of the total weight of these gravid females. This is the first time information on female reproduction in this species has been reported from any population of M. pisolabrum in the state.

Some Histological Reveals On Reproduction Of One Of The Lessepsian Species, Nemipterus Randalli In Antalya (Turkey), Mehmet Rüştü Özen

Turkish Journal of Veterinary & Animal Sciences

In this study, the reproduction of Nemipterus randalli, one of the lessepsian fish catch from the Gulf of Antalya, Turkey was interpreted histologically. Regarding the fish used in this study (N = 1715), it is noteworthy to mention that male individuals are larger than females. The first sexual maturity in males was determined 17 cm TL and 60 g in BW, whereas 13 cm TL and 25 g BW in females. Females reached sexual maturity at age I+ and males at the age of II+. Seven different stages (O1-O7) were identified in oocyte maturation in the ovaries. The spawning time …

Table Of Contents

Professional Agricultural Workers Journal

No abstract provided.

Impact Of Phosphorus Intake On Beef Heifer Growth Performance And Conception Rates, Hailey Hilfiker, Beth Kegley, Rick Rorie, Jeremy Powell

Discovery, The Student Journal of Dale Bumpers College of Agricultural, Food and Life Sciences

In Northwest Arkansas, soil phosphorus concentrations have increased where livestock manures have been repeatedly applied, leading many to question if supplementing phosphorus in this area is necessary. The effects of phosphorus intake on beef heifer growth performance and conception rates were investigated. In this study, crossbred Angus heifers (n = 72), approximately 30 days after weaning, were stratified by body weight (average initial weight 251 ± 3.9 kg) and allocated randomly into 8 groups. Groups were assigned randomly to 1 of 2 treatments. Treatments were delivered through either a free-choice-mineral mix that contained no supplemental phosphorus (CON), or a free-choice-mineral …

Vertebrate Natural History Notes From Arkansas, 2020, C. Renn Tumlison, Matt Connior, Blake Sasse, Henry Robison, Stan Trauth, S Higdon, L Baer, Z. Baer, R. Stinson, D. Carson, T. Inebnit, L. Lewis, Roger Perry, Ron Redman

Journal of the Arkansas Academy of Science

Smaller details of natural history often go undocumented to science if those details are not parts of larger studies, but small details can provide insights that lead to interesting questions about ecological relationships or environmental change. We have compiled recent important observations of distribution and reproduction of fishes and mammals. Included are new distributional records of mammals, and observations of reproduction in several mammals for which few data exist in Arkansas. A rare record of the Long-tailed weasel, a special of special concern in Arkansas, is documented from Newton Co. We also provide evidence that Seminole bats likely reproduce in …

Distribution And Reproduction By The Purple Gallinule (Porphyrio Martinica) In Arkansas, C. Renn Tumlison, Terry L. Tumlison, Tamzen T. Bryant

Journal of the Arkansas Academy of Science

The Purple Gallinule (Porphyrio martinica) is a rare bird in Arkansas, and its populations likely have declined due to loss of marshy areas with emergent vegetation. By use of online sources for citizen science combined with a field study, we elucidate the current distribution of this bird in Arkansas, and document characteristics of reproduction and development. Purple Gallinules arrive in Arkansas as early as April and remain to late October. Nesting occurs from early May into July, and nests may represent second broods. Ontogenetic changes in hatchlings are described.

The Use Of Doppler Ultrasound As A Potential Fertility Predictor In Male Goats, Diego Luiz Dos Santos Ribeiro, Larissa Sarmento Santos, Itamara Gomes França, Hellyda Gomes Pereira, Joaquim De Sousa Lima, Bento Douglas Brito Miranda, Alcina Vieira Carvalho Neta, Jose Ribamar S Torres Junior

Turkish Journal of Veterinary & Animal Sciences

The aim of the current study is to correlate Doppler flowmetry with andrological features in male goats belonging to different age and fertility groups. Thirty native crossbreed bucks bred in Northeastern Brazil were subjected to B-mode, spectral and color Doppler ultrasound, as well as to andrological examinations. Color Doppler ultrasound was used to evaluate blood flow in the pampiniform plexus and testicular parenchyma. Semen was collected through the electroejaculation method in order to have its physical and morphological features evaluated. The animals were grouped based on age (young, mature, and old) and fertility level (high and low) before analysis. Data …

In Vitro Exposure To Di-(2-Ethylhexyl) Phthalate (Dehp) Stimulates Spontaneous Felineuterine Contractions, Ruhi̇ Kabakçi, Hasan Ceyhun Macun, Ebru Yildirim, İbrahi̇m Mert Polat, Taha Burak Eli̇foğlu

Turkish Journal of Veterinary & Animal Sciences

Di-(2-ethylhexyl) phthalate (DEHP) is widely used as a plasticizer in various products such as PVC-derived plastics, toys, packaging materials, cosmetics, and pharmaceuticals. This study aimed to investigate the effect of DEHP on spontaneous contractions of the feline uterus in vitro. Tubal 1-cm uterine samples prepared from 10, 9, and 12 uteri obtained from adult cats in estrus (n = 5), diestrus (n = 5), and interestrus (n = 5), respectively, after ovariohysterectomy were suspended in an isolated organ bath in aerated Krebs solution at 39 ± 1 °C, and an initial 1 g tension was given. After 1 h equilibration …

Preface

Professional Agricultural Workers Journal

No abstract provided.

Table Of Contents

Professional Agricultural Workers Journal

No abstract provided.

Optimizing Reproductive Performance In The Goat Herd, Dahlia O'Brien, Stephen Wildeus

Professional Agricultural Workers Journal

Abstract

Reproductive efficiency impacts pregnancy rates, kidding/lambing frequency and number of offspring available for market each year. To enhance reproductive performance, consider breed, selection, nutrition and health, and understand basic female and male reproduction. Proper ration formulation and feeding promotes reproductive function and leads to more offspring. Selecting the highest performing females while culling unproductive does increases reproductive rates. Diseases affect the reproduction and survival of kids, so adopting disease prevention strategies including routine vaccinations and deworming protocols that promote good herd health is necessary. Understanding male and female reproduction are critical in managing puberty, minimizing the effects of seasonality …

Abridged Submission Guidelines

Professional Agricultural Workers Journal

No abstract provided.

The Reproductive Season Of The Highland Stoneroller, Campostoma Spadiceum, Evidenced By Museum Specimens, C. Renn Tumlison, Henry Robison, Grace Wills

Journal of the Arkansas Academy of Science

The Highland Stoneroller (Campostoma spadiceum) was described as a distinct species in 2010. Since then, the only study specific to this species is a survey of distribution, and nothing is known about reproduction. We examined 134 lots including 315 specimens of C. spadiceum housed in the Henderson State University collection of fishes to evaluate the timing of reproductive events. We dissected individuals to reveal sex and reproductive status. Females as small as 49 mm total length were able to yolk eggs, and follicles were in development by October. Ripe eggs were present in specimens collected from January through …

Aspects Of The Reproductive Biology And Growth Of The Mississippi Silvery Minnow, Hybognathus Nuchalis (Agassiz, 1855) (Teleostei: Cyprinidae) From The Pearl River, Louisiana., Arely Ramírez-García, Kyle R. Piller

Southeastern Fishes Council Proceedings

The reproductive biology and growth of the Mississippi Silvery Minnow, Hybognathus nuchalis, is described from multiple sites in the Pearl River, Louisiana. Individuals were collected from August 2011 to August 2012. Ovarian weights, expressed as a percentage of body weights, peaked in December. Size structure ranged from 29.0 to 60.0 mm SL for females and 25.0 to 56.0 mm SL for males. Mature ova were found from November to January. Females reached first maturity (L50) at 37.0 mm SL and L50 for males is at 41.0 mm SL. Sex ratio (females:males) is biased towards females (X²= 18.57 p …

Reproductive Correlates Of A Perineal Gland In The Hispid Cotton Rat, Robert K. Rose, Julie A. Winchell

Virginia Journal of Science

During studies of the annual cycle of reproduction in the hispid cotton rat (Sigmodon hispidus) in southeastern Virginia, we discovered an anal (more specifically, perineal) gland that is present only in males during the breeding season. The perineal gland encircles the lower end of the rectum and has ductal connections to the urethra, through which its secretions likely are delivered. This fatty gland is highly developed in breeding males but, like the testes and seminal vesicles, regresses during the winter non-breeding season. The prominence and cyclicity of the perineal gland suggests that it somehow facilitates normal reproduction. The …

Lichens In The Nests Of European Starling Sturnus Vulgaris Serve A Mate Attraction Rather Than Insecticidal Function, Lucia Mariel Ibañez, Renato Andres García, Vanina Dafne Fiorini, Diego Montalti

Turkish Journal of Zoology

The European starling Sturnus vulgaris is a hole-nesting bird in which the male builds a voluminous nest using a wide variety of materials such as twigs, grass, leaves, feathers, and lichens. The function of lichens in starling nests has not been assessed until now and we hypothesize that this material is related to a mate attraction function or is used to protect nestlings from parasites due to the presence of secondary compounds with insecticidal effects with the lichens. We aimed to identify the lichen species and frequency of lichen use in European starling nests, and to determine if the presence …

Seasonal Hormones, Female Reproductive Tract Changes, And Some Field Observations Onbreeding Activities Of The Small Indian Mongoose (Herpestes Javanicus) From Its Nativerange Of Potohar Plateau, Pakistan, Faraz Akrim, Hira Fatima, Saidia Nazir, Tariq Mahmood, Riaz Hussain, Muhammad Sajid Nadeem

Turkish Journal of Zoology

The small Indian mongoose acts as a biological control agent for rodents, snakes, and many insects in agroecosystems. Its reproductive physiology has been studied mostly from its introduced range. We investigated the reproductive pattern of the female small Indian mongoose on the Potohar Plateau, i.e. its native range. We found a male:female ratio of 0.67 (n = 52); only 16% of the live-trapped females were found to be pregnant. Elevated estradiol and progesterone levels were found during March to May. LH levels showed 2 peaks: the first during March (25.5 mIU/mL) and the second in September (29.8 mIU/mL); however, FSH …

Effects Of Increasing Dietary Lysine On Performance Of Lactating Sows In Commercial Conditions, K. M. Gourley, J. C. Woodworth, J. M. Derouchey, M. D. Tokach, S. S. Dritz, R. D. Goodband, S. J. Kitt, E. W. Stephenson

Kansas Agricultural Experiment Station Research Reports

A total of 710 mixed parity sows (Line 241; DNA, Columbus, NE) were used in a 21-d study to determine the effect of standardized ileal digestible (SID) lysine (Lys) intake during lactation on sow and litter performance and subsequent reproductive performance of primiparous and multiparous sows housed in a commercial production system. On d 112 of gestation, females were weighed and blocked by BW within expected farrowing date and parity (1 to 7) and randomly assigned to 1 of 4 dietary treatments within blocks. Dietary treatments were corn-soybean meal-based and consisted of increasing SID Lys (0.75, 0.90, 1.05, and 1.20%). …