scholarly journals Rapid evolution of testis size relative to sperm morphology suggests that post‐copulatory selection targets sperm number inAnolislizards

2019 ◽  
Vol 32 (4) ◽  
pp. 302-309 ◽  
Author(s):  
Ariel F. Kahrl ◽  
Michele A. Johnson ◽  
Robert M. Cox
Keyword(s):  
Sperm Morphology ◽  
Rapid Evolution ◽  
Testis Size ◽  
Sperm Number

scholarly journals The effects of Hoixuanhoan remedy on sperm number and sperm morphology in male with oligospermia

2015 ◽  
Vol 4 (1) ◽  
pp. 97
Author(s):  
Doan Minh Thuy ◽  
Truong Viet Binh ◽  
Thinh Nguyen The
Keyword(s):  
Sperm Morphology ◽  
Sperm Number

scholarly journals THE EFFECT OF CONSUMING AVOCADO (Persea americana) ON MICE (Mus musculus) SPERM QUALITY

2021 ◽  
Vol 7 (1) ◽  
pp. 11-17
Author(s):  
Yasinta Tiara Amelia ◽  
Evi Hanizar ◽  
Dwi Nur Rikhma Sari
Keyword(s):  
Sperm Morphology ◽  
Sperm Quality ◽  
Persea Americana ◽  
Sperm Number ◽  
Nacl Solution ◽  
Randomized Design ◽  
Smear Preparation ◽  
Cervical Dislocation ◽  
Completely Randomized Design

The nutrients such as protein and vitamin are proven to improve the sperm quality. One nutrient rich fruit is avocado round green variety, which contains vitamins A, C and E higher than other varieties. This study aimed to determine the effect of consuming avocado on the mice sperm quality. This experimental study was using a Completely Randomized Design with four treatments, each with eight replications. Avocado dosage treatments were control, 75 % w/v, 100% w/v, and 133% w/v , with the number of mice were 32 age four weeks. Avocado was given three times a day, each 0.5 mL for six weeks besides the main food. The observed response was the sperm quality including number, motility and morphology. Sperm was taken from the epididymis after the mice were killed by cervical dislocation method. Sperm was made a suspension using 0.9% NaCl solution and a smear preparation to observe the sperm morphology while staining with basic stain crystal violet. The sperm quality was observed by Neubauer's counting rooms through a multimedia microscope. Data was analyzed using Kurskal Wallis test for the sperm number and Anova test for motility and morphological responses. The result showed that avocado had a significant influence for reproductive health, particularly for increasing spermatozoa quality, including concentration, motility and morphology of sperm. The higher dose of avocado given the higher quantity and quality of sperm resulted.

scholarly journals Ejaculate Allocation and Sperm Characteristics Differ among Alternative Male Types in a Species of Fish with Cooperation and Competition among Unrelated Males

Cells ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2612
Author(s):  
Suzanne H. Alonzo ◽  
Kelly A. Stiver ◽  
Holly K. Kindsvater ◽  
Susan E. Marsh-Rollo ◽  
Bridget Nugent ◽  
...  
Keyword(s):  
Social Interactions ◽  
Sperm Morphology ◽  
Seminal Fluid ◽  
Cell Concentration ◽  
Tail Length ◽  
Past Research ◽  
Sperm Number ◽  
Sperm Characteristics ◽  
Testes Size ◽  
Satellite Males

Sexual selection arising from sperm competition has driven the evolution of immense variation in ejaculate allocation and sperm characteristics not only among species, but also among males within a species. One question that has received little attention is how cooperation among males affects these patterns. Here we ask how male alternative reproductive types differ in testes size, ejaculate production, and sperm morphology in the ocellated wrasse, a marine fish in which unrelated males cooperate and compete during reproduction. Nesting males build nests, court females and provide care. Sneaker males only “sneak” spawn, while satellite males sneak, but also help by chasing away sneakers. We found that satellite males have larger absolute testes than either sneakers or nesting males, despite their cooperative role. Nesting males invested relatively less in testes than either sneakers or satellites. Though sneakers produced smaller ejaculates than either satellite or nesting males, we found no difference among male types in either sperm cell concentration or sperm number, implying sneakers may produce less seminal fluid. Sperm tail length did not differ significantly among male types, but sneaker sperm cells had significantly larger heads than either satellite or nesting male sperm, consistent with past research showing sneakers produce slower sperm. Our results highlight that social interactions among males can influence sperm and ejaculate production.

119: Effect of Epididymitis on Semen Biochemical and Sperm Morphology Parameters

2005 ◽  
Vol 173 (4S) ◽  
pp. 32-32
Author(s):  
Petra Huwe ◽  
Roelof Menkveld ◽  
Martin Ludwig ◽  
Wolfgang Weidner
Keyword(s):  
Sperm Morphology ◽  
Morphology Parameters

The Glissonian Approach of the Hilum

Swiss Surgery ◽  
1999 ◽  
Vol 5 (3) ◽  
pp. 143-146 ◽  
Author(s):  
Launois ◽  
Maddern ◽  
Tay
Keyword(s):  
Portal Vein ◽  
Hepatic Artery ◽  
Posterior Approach ◽  
Hepatic Duct ◽  
Rapid Evolution ◽  
Hepatic Tissue ◽  
Detailed Knowledge ◽  
Porta Hepatis ◽  
Liver Segment ◽  
Glissonian Approach

The detailed knowledge of the segmental anatomy of the liver has led to a rapid evolution in resectional surgery based on the intrahepatic distribution of the portal trinity (the hepatic artery, hepatic duct and portal vein). The classical intrafascial or extrahepatic approach is to isolate the appropriate branch of the portal vein, hepatic artery and the hepatic duct, outside the liver substance. Another method, the extrafascial approach, is to dissect the whole sheath of the pedicle directly after division of a substantial amount of the hepatic tissue to reach the pedicle, which is surrounded by a sheath, derived from Glisson's capsule. This Glissonian sheath encloses the portal trinity. In the transfissural or intrahepatic approach, these sheaths can be approached either anteriorly (after division of the main, right or umbilical fissure) or posteriorly from behind the porta hepatis. We describe the technique for approaching the Glissonian sheath and hence the hepatic pedicle structures and their branches by the intrahepatic posterior approach that allows early delineation of the liver segment without the need for ancillary techniques. In addition, the indications for the use of this technique in the technical and oncologic settings are also discussed.

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