scholarly journals On some morphological abnormalities in adult fairy shrimp Branchipus schaefferi Fischer, 1834, from Serbia

2013 ◽  
Vol 65 (4) ◽  
pp. 1645-1650 ◽  
Author(s):  
Dragana Milicic ◽  
Sofija Pavkovic-Lucic ◽  
L. Lucic
Keyword(s):  
Fairy Shrimp ◽  
Morphological Abnormalities ◽  
Large Branchiopods ◽  
Branchipus Schaefferi ◽  
Morphological Anomalies ◽  
First Time

Branchipus schaefferi Fischer, 1834, is a common and one of the most abundant large branchiopods widely distributed in Europe. In this work, for the first time, we describe and classify some of the most frequently observed morphological anomalies in this species. These are deformities in the head structures as well as in cercopods. Possible causes of such anomalities are discussed in detail.

Effects of algae, yeast and photosynthetic bacteria diets on survival and growth performance in the fairy shrimp, Streptocephalus sirindhornae (Branchiopoda, Anostraca)

Crustaceana ◽  
2018 ◽  
Vol 91 (12) ◽  
pp. 1505-1522 ◽  
Author(s):  
Chewapat Saejung ◽  
Anuwat Chaiyarat ◽  
La-Orsri Sanoamuang
Keyword(s):  
Growth Performance ◽  
Photosynthetic Bacteria ◽  
Photosynthetic Bacterium ◽  
Ammonia Concentration ◽  
Fairy Shrimp ◽  
Shrimp Culture ◽  
Survival And Growth ◽  
Nitrate And Nitrite ◽  
First Time

Abstract This study investigated the effects on survival, growth performance and water quality of algae, yeast and photosynthetic bacteria as diets for larval and immature/mature Streptocephalus sirindhornae. Survival of the larvae fed with the alga Chlorella vulgaris and the photosynthetic bacterium Rhodopseudomonas faecalis for 5 days was higher than 80%, while those fed with the yeast Saccharomyces cerevisiae was 4.4%. After feeding the 6-day-old fairy shrimp until they reached 30 days of age, those fed with bacteria showed the highest survival and growth rate. Ammonia, nitrate and nitrite concentrations in the water treated with R. faecalis were the lowest. The highest ammonia concentration, the lowest dissolved oxygen, and excessive turbidity were found in the yeast treatment. Frequent water replacement could not overcome this, which resulted in the low survival rate. Utilization of photosynthetic bacteria in fairy shrimp culture is for the first time reported herein, and the disadvantages of using yeast in S. sirindhornae cultivation are discussed.

scholarly journals Multiple morphological abnormalities in a blue shark Prionace glauca (Linnaeus, 1758) embryo from the Peruvian coast, southeast Pacific

2020 ◽  
Vol 48 (1) ◽  
pp. 141-145
Author(s):  
Keny Kanagusuku ◽  
Miguel Romero ◽  
Sergio Ramírez-Amaro
Keyword(s):  
Cephalic Region ◽  
Blue Shark ◽  
Caudal Fin ◽  
Prionace Glauca ◽  
Morphological Abnormalities ◽  
Peruvian Coast ◽  
Southeast Pacific ◽  
First Time

This study reports for the first time a case of multiple morphological abnormalities in a blue shark Prionace glauca embryo collected on the Peruvian coast, southeast Pacific. External exploration and radiograph picture showed duplicated parts in the cephalic region (mouths and eye sockets) and trunk anomalies (thoracic lordosis and rolled caudal fin). The duplicate face parts in a single head seen in the embryo, suggest a diprosopia anomaly.

scholarly journals B-chromosomes and male-biased sex ratio with paternal inheritance in the fairy shrimp Branchipus schaefferi (Crustacea, Anostraca)

Heredity ◽  
2002 ◽  
Vol 88 (5) ◽  
pp. 356-360 ◽  
Author(s):  
L Beladjal ◽  
T T M Vandekerckhove ◽  
B Muyssen ◽  
J Heyrman ◽  
J de Caesemaeker ◽  
...  
Keyword(s):  
Sex Ratio ◽  
B Chromosomes ◽  
Fairy Shrimp ◽  
Paternal Inheritance ◽  
Biased Sex Ratio ◽  
Branchipus Schaefferi

scholarly journals Contributions to the knowledge of the mite genus Stigmaeus Koch, 1836 (Acari: Stigmaeidae) of Turkey

2017 ◽  
Author(s):  
Meryem Bingül ◽  
Salih Doğan ◽  
Sibel Dilkaraoğlu
Keyword(s):  
New Species ◽  
Pinus Sylvestris ◽  
New Record ◽  
Morphological Abnormalities ◽  
First Time ◽  
Mite Genus

Based on the mite specimens collected within the scope of a study on Erzincan (Turkey) mite biodiversity, two species of the genus Stigmaeus are described and illustrated here: S. bifurcus sp. nov. as new to science and S. miandoabiensis Bagheri & Zarei, 2012 as a new record for Turkey. Some morphological abnormalities in the new species are noted. The deutonymph of S. miandoabiensis is described for the first time in this study. Discovery of this stage from soil and litter under Pinus sylvestris in Turkey adds more data to our knowledge of the species.

An abnormal rostrum in a wild subadult shrimp Farfantepenaeus duorarum (Burkenroad, 1939) (Decapoda, Penaeidae) from the southern Gulf of Mexico

Crustaceana ◽  
2020 ◽  
Vol 93 (9-10) ◽  
pp. 989-997
Author(s):  
Armando T. Wakida-Kusunoki ◽  
Jose L. Cruz-Sánchez ◽  
Marco A. May-Kú ◽  
Pedro-Luis Ardisson
Keyword(s):  
Gulf Of Mexico ◽  
Carapace Length ◽  
Pink Shrimp ◽  
Morphological Abnormalities ◽  
The Family ◽  
Southern Gulf Of Mexico ◽  
Farfantepenaeus Duorarum ◽  
First Time ◽  
Subadult Female

Abstract An abnormal bifid rostrum is reported for the first time for a wild-caught subadult female (carapace length = 22.5 mm) of the pink shrimp Farfantepenaeus duorarum (Burkenroad, 1939) from Celestun lagoon, Yucatan, southern Gulf of Mexico. A review of registers on morphological abnormalities in shrimps of the family Penaeidae is provided.

Tell-tale testicles: observations of morphological abnormalities in small, spatially restricted mainland quokka (Setonix brachyurus) populations

2019 ◽  
Vol 41 (1) ◽  
pp. 150
Author(s):  
Shannon J. Dundas
Keyword(s):  
Genetic Diversity ◽  
Western Australia ◽  
Adult Male ◽  
Camera Trap ◽  
Jarrah Forest ◽  
Morphological Abnormalities ◽  
South West ◽  
Morphological Anomalies ◽  
Future Management

The quokka (Setonix brachyurus) exists in spatially restricted populations in the northern jarrah forest in south-west Western Australia. Observations were made of adult male quokkas exhibiting morphological anomalies (cryptorchidism and micropthalmia) that may be indicative of inbreeding within these populations. Despite the presence of males with abnormalities that could potentially affect their fertility, most females captured were carrying a pouch young or feeding a joey at foot. Field researchers and managers should routinely report abnormalities seen in wild captured animals. Reduced genetic diversity of quokka populations in the northern jarrah forest may not be the key threatening process and preservation of habitat may be more important to ensure persistence of populations. Future management of this species in the northern jarrah forest should include up-to-date occurrence mapping across their range using targeted camera trap surveys and management of habitat to improve connectivity between populations.

scholarly journals Cyst morphology of large branchiopod crustaceans (Anostraca, Notostraca, Laevicaudata, Spinicaudata) in western Poland

2016 ◽  
Vol 53 (2) ◽  
pp. 79-88 ◽  
Author(s):  
Michał Jan Czyż ◽  
Paweł Woliński ◽  
Bartłomiej Gołdyn
Keyword(s):  
Electron Microscope ◽  
Resting Eggs ◽  
Large Branchiopods ◽  
Triops Cancriformis ◽  
New Localities ◽  
Branchipus Schaefferi ◽  
Large Branchiopod ◽  
Scanning Electron ◽  
Cyst Morphology

AbstractThe morphology of resting eggs was studied in Polish populations of 7 large branchiopod species:Branchipus schaefferi,Chirocephalus shadini,Eubranchipus grubii(Anostraca),Lepidurus apus,Triops cancriformis(Notostraca),Lynceus brachyurus(Laevicaudata), andCyzicus tetracerus(Spinicaudata). Scanning electron microscope photographs for each species are also provided. In some species (especiallyE. grubii), the ornamentation and size of cysts from Polish populations significantly differ from literature data for populations from other parts of Europe. We also present a key to determination of the studied species based on cyst morphology and discuss whether those traits are useful in surveys of new localities of endangered large branchiopods.

Morphological abnormalities in the stauromedusa Haliclystus auricula (Cnidaria) and their possible causes

2008 ◽  
Vol 88 (2) ◽  
pp. 259-262 ◽  
Author(s):  
Carolina J. Zagal
Keyword(s):  
Southern Chile ◽  
Morphological Abnormalities ◽  
First Time

Morphological abnormalities were observed in a population of the stauromedusa Haliclystus auricula in southern Chile. A total of 144 abnormal specimens was observed out of 3790 Stauromedusae sampled. The following abnormalities are described: individuals lacking arms (73%), with more than eight anchors (11%), more than eight arms (8%), lacking anchors (4%) and one individual with tentacles in abnormal locations. An individual with two peduncles, one with two mouths and one twin-like individual are recorded for the first time in this species. Their possible causes are discussed.

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