Specific features of the external morphology of starry flounder Platichthys stellatus at atavism in the body color

This study examined the differences in cranial and external morphology of male and female tree squirrel species (Funisciurus leucogenys) from three different locations in Savannah vegetation zone of Nigeria. The tree squirrels were collected from contracted local hunters which identify the tree squirrel. After collection and identification to the generic level, they were transferred to the laboratory in absolute ethanol. About 183 skulls were prepared (58 male and 125 female), the skull and other body parameters were measured using digital venire calliper. The results showed that the body parameters (HBL, TL, TBL, EL, HFL, and BW) of the female specimen measured were different from male and the body parameters of the specimen from one location were slightly different from another. Also, the cranial measure showed some similarities and slight differences between male and female specimen among the locations (Asejire, Ilorin, and Ogbomosho). In conclusion, the cranial and body morphology parameters of male and female tree squirrels from the three locations (Asejire, Ilorin, and Ogbomosho) showed that despite that the tree squirrels were from different locations, they were of the same genus (F. leucogeny), which indicated that locations might not have an effect on the specimen.

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Biochemical polymorphism of starry flounder, Platichthys stellatus, from the northwestern and northeastern Pacific Ocean

Animal Blood Groups and Biochemical Genetics ◽

10.1111/j.1365-2052.1975.tb01344.x ◽

2009 ◽

Vol 6 (1) ◽

pp. 9-18 ◽

Cited By ~ 4

Author(s):

Allyn G. Johnson ◽

Alan J. Beardsley

Keyword(s):

Pacific Ocean ◽

Biochemical Polymorphism ◽

Starry Flounder ◽

Platichthys Stellatus ◽

Northeastern Pacific

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Progress in Nutritional Requirements and Feed Research of Starry Flounder, Platichthys stellatus

Open Journal of Fisheries Research ◽

10.12677/ojfr.2021.83014 ◽

2021 ◽

Vol 08 (03) ◽

pp. 120-126

Author(s):

永智孙

Keyword(s):

Nutritional Requirements ◽

Starry Flounder ◽

Platichthys Stellatus

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Respiratory, Ventilatory, and Cardiovascular Responses to Experimental Anaemia in the Starry Flounder, Platichthys Stellatus

Journal of Experimental Biology ◽

10.1242/jeb.82.1.139 ◽

1979 ◽

Vol 82 (1) ◽

pp. 139-162

Author(s):

CHRIS M. WOOD ◽

B. R. McMAHON ◽

D. G. MCDONALD

Keyword(s):

Cardiac Output ◽

Rainbow Trout ◽

Exercise Performance ◽

Cardiovascular Responses ◽

O2 Uptake ◽

Post Exercise ◽

Starry Flounder ◽

Platichthys Stellatus ◽

Blood Ph ◽

The Face

Unrestrained, quiescent starry flounder maintained approximately normal levels of O2 uptake in the face of severe experimental anaemia. At haematocrits above about 5 %, the only major compensation was a reduction in venous O2 tension which lowered venous saturation and thereby kept a constant difference between arterial and venous O2 contents. Below a haematocrit of about 5 %, this difference decreased, and many additional compensations were invoked, including increases in ventilation, expired O2 tension, arterial O2 tension, and cardiac output, and decreases in systemic vascular resistance and blood pH. All changes could be reversed by restoration of haematocrit. Exercise performance and post-exercise changes in blood pH and lactate differed only slightly between anaemic and normal flounder. In wild flounder, anaemia commonly occurs and apparently only causes death at the haematocrit value (about 5 %) below which most major compensations are implemented. The respiratory strategy of the flounder during anaemia is compared with that of the rainbow trout.

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Different transcriptional levels of Corazonin, Elevenin and PDF according to the body-color of the two-spotted cricket, Gryllus bimaculatus

Bioscience Biotechnology and Biochemistry ◽

10.1093/bbb/zbab183 ◽

2021 ◽

Author(s):

Hitomi Seike ◽

Shinji Nagata

Keyword(s):

Locusta Migratoria ◽

Living Environment ◽

The Body ◽

Transcriptional Level ◽

Body Color ◽

Gryllus Bimaculatus ◽

Pigment Dispersing Factor ◽

Color Changes ◽

Quantitative Analyses ◽

Endocrine Factors

Abstract Body-color in insects changes according to the living environment and physiological stresses possibly involved in endocrine factors. To date, three predominant bioactive peptides, Corazonin, Elevenin, and pigment-dispersing factor (PDF) have been illuminated to be involved in the body-color in insects and crustaceans. Here, we examined the possibilities that these three factors would contribute to body-color changes via melanization in the two-spotted cricket, Gryllus bimaculatus, whose body color changes according to population density drastically. Quantitative analyses revealed that the higher transcriptional levels of Corazonin and Elevenin in the crowded-conditioned crickets, whereas the transcriptional level of PDF was higher in the isolated-conditioned crickets. However, the body color was not changed by knockdown of Corazonin, Elevenin, and PDF by RNA interference. The present data indicated that coloration mechanisms in G. bimaculatus is differently controlled from the previous observation in Locusta migratoria, a closely related orthopteran species.

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