Morphological characteristics of male reproductive organs in some walnut (Juglans regia L.) genotypes

Pangolin is an animal that has special attention by CITES since 1985. This is due to increase of market demand, especially from China. It causes the illegal hunting is increasing, so that alleged wild population decreases dramatically. Overcoming of decreasing of the pangolin populations in the wild, could be anticipated by captive breeding. The information about the status of the reproductive biology of wild animals is very important for implementation of ex situ conservation activities. One of the aspects of the reproductive biology of wild animals is knowledge of the anatomy and physiology of the reproductive organs both males and females.Nowdays, data on morphological characteristics of male reproductive organs of pangolin (M. javanica) still limited. The data obtained of this study is new information in reproductive biology, especially on the morphological characteristics of the male reproductive organs of pangolin (M. javanica). In addition, the information can be the data base that is important in the effort to support ex situ conservation.

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Intrauterine development, functions and diseases of male reproductive organs

Orvosi Hetilap ◽

10.1556/oh.2010.28806 ◽

2010 ◽

Vol 151 (39) ◽

pp. 1573-1579

Author(s):

Ákos Jakobovits ◽

Antal Jakobovits

Keyword(s):

Reproductive Organs ◽

Intrauterine Development ◽

Male Reproductive Organs

A szerzők a központi idegrendszer, a tesztoszteron és származékainak szerepét tárgyalják a férfi nemi szervek méhen belüli fejlődésében. A férfi személyiségét meghatározó jellegzetességek először az emberi fejlődés magzati stádiumában jelentkeznek. Ezek kialakulása a gyermekkorban folytatódik. Pubertás után ezek növekvő mértékben válnak nyilvánvalóvá, és az egyén élete folyamán túlsúlyban maradnak. Az említett folyamatok mind a férfias fenotípust, mind a férfias magatartást befolyásolják. A tesztoszteron és származékai kontrollálják a férfi nemi szervek fejlődését. Hiányuk a női nemi jellegzetességek túlsúlyához vezet, a férfi nemi kromoszómakép ellenére. E jelenségek típusos példája a testicularis feminisatio klinikai képe. Jelen tanulmány különleges figyelmet szentel a reprodukciós szervek azon rendellenességeinek, amelyek a magzatokban ultrahanggal azonosíthatók. Ezen anomáliák legtöbbje antenatalisan hatásosan nem kezelhető. Azok a rendellenességek, amelyek a méhen kívüli életben sem gyógyíthatók, a terhességmegszakítás javallatát képezhetik, amennyiben ultrahangvizsgálattal a kora terhességben kimutathatók. Orv. Hetil., 2010, 39, 1573–1579.

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Failed prey or peculiar necrolysis? Isolated ammonite soft body from the Late Jurassic of Eichstätt (Germany) with complete digestive tract and male reproductive organs

Swiss Journal of Palaeontology ◽

10.1186/s13358-020-00215-7 ◽

2021 ◽

Vol 140 (1) ◽

Author(s):

Christian Klug ◽

Günter Schweigert ◽

Helmut Tischlinger ◽

Helmut Pochmann

Keyword(s):

Digestive Tract ◽

Late Jurassic ◽

Reproductive Organs ◽

Mantle Cavity ◽

Soft Body ◽

Exceptional Preservation ◽

Attachment Structures ◽

Male Reproductive Organs ◽

Marine Basins

AbstractAmmonoid soft parts have been rarely described. Here, we document the soft parts of a perisphinctid ammonite from the early Tithonian of Wintershof near Eichstätt (Germany). This exceptional preservation was enabled by the special depositional conditions in the marine basins of the Solnhofen Archipelago. Here, we document this find and attempt to homologize its parts with various organs such as the digestive tract, reproductive organs, the mantle cavity with gills, and the hyponome, with differing degrees of reservation. Alternative interpretations are also taken into account. We suggest that the soft parts were separated from the conch either taphonomically (following necrolytical processes affecting the attachment structures) or during a failed predation, where a predator (fish or coleoid) removed the soft parts from the conch but then dropped them. This find is interesting because it adds to the knowledge of ammonite anatomy, which is normally hidden in the conch. The reproductive organs show traces of what might have been spermatophores, thus supporting the hypothesis that the microconchs represented the males.

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