scholarly journals Advancements towards restoration of the endangered limpet Patella ferruginea Gmelin, 1791 through controlled reproduction

2021 ◽  
Author(s):  
Maria Paola Ferranti ◽  
Javier Guallart ◽  
Giorgio Fanciulli ◽  
Pier Augusto Panzalis ◽  
Mariachiara Chiantore
2016 ◽  
Vol 7 (2) ◽  
pp. 93-110 ◽  
Author(s):  
Erhard Schüttpelz

"Domestizierung lässt sich durch einen Nukleus aus drei technischen Tätigkeiten definieren: durch die gesteuerte Reproduktion, die eigens eingerichtete Ernährung und den Schutz von Tieren und Pflanzen vor Schädigungen. Wenn man diese Definition an einen Vergleich von Kulturen und Kollektiven anlegt, stellen sich zwei Überraschungen ein: Außerhalb jeder Domestizierung entwickeln Wildbeuter eine rituelle Domestizierung oder ein mythologisches Verständnis, ihre Welt sei bereits domestiziert. Und in der Moderne tritt an die Seite der technischen Domestizierung ihre mögliche Naturalisierung. Der Aufsatz zieht einige Konsequenzen aus diesem typologischen Vergleich. Domestication can be defined by a nucleus of three technical activities: controlled reproduction and nutrition as well as protection of animals and plants from damage. If one applies this definition to a comparison of cultures and collectives, two surprises arise: Without being in touch of any kind of domestication, hunter-gatherers develop a ritual domestication or a mythological understanding that their world already is domesticated. And in modernity, possible naturalization arises at the side of technical domestication. The paper draws some conclusions from this typological comparison. "


2016 ◽  
Vol 3 ◽  
Author(s):  
Juan Antonio González ◽  
Pedro Paredes ◽  
Isidoro Bueno ◽  
Paola Calzado
Keyword(s):  

1982 ◽  
Vol 62 (3) ◽  
pp. 679-687 ◽  
Author(s):  
J. N. B. SHRESTHA ◽  
L. AINSWORTH ◽  
D. P. HEANEY ◽  
A. N. SMITH

A 3-yr study demonstrates that commercially acceptable reproductive performance can be achieved in breeding sheep following the application of a fluorogestone-acetate- (FGA-) impregnated intravaginal sponge and pregnant mare's serum gonadotrophin (PMSG) treatment to induce a synchronized estrus under field conditions. Overall fertility, prolificacy and fecundity levels of 76%, 1.92 and 148%, respectively, resulted from breeding at the synchronized estrus, and 94%, 1.86 and 175%, respectively, due to breeding at the synchronized and subsequent estruses in the breeding (fall) season. In the nonbreeding (spring) season, these responses were 51%, 1.73 and 88%, respectively, at the synchronized estrus, and 63%, 1.61 and 109%, respectively, due to breeding at the synchronized and subsequent estruses. Significant farm-to-farm variation was observed with reproductive performance ranging from 77 to 100% for fertility, 1.45 to 2.74 for prolificacy, and 134 to 274% for fecundity in the estrous season. There were no significant differences among farms after synchronization and breeding during the anestrous season. Key words: Sheep, synchronization, fluorogestone acetate, pregnant mare's serum gonadotrophin, season, farm flocks.


2015 ◽  
Vol 26 (4) ◽  
pp. 623-638 ◽  
Author(s):  
Stefania Coppa ◽  
G. Andrea De Lucia ◽  
Giorgio Massaro ◽  
Andrea Camedda ◽  
Stefano Marra ◽  
...  

2010 ◽  
Vol 90 (7) ◽  
pp. 1449-1454 ◽  
Author(s):  
Marco Casu ◽  
Daria Sanna ◽  
Benedetto Cristo ◽  
Tiziana Lai ◽  
Gian Luca Dedola ◽  
...  

Patella ferrugineais an endangered marine gastropod, distributed on the western Mediterranean coasts, whose range has progressively contracted, due to intense human exploitation. A genetic analysis was performed on two unidentified young individuals belonging to the genusPatellafound attached to the shell of an adult ofP. ferruginea, with a twofold aim: (i) to achieve their correct taxonomic attribution by means of the DNA barcoding; and (ii) to shed some light on the hypothesized larval philopatry and/or juveniles phoresis inP. ferruginea. The survey was carried out comparing the sequences of the cytochrome c oxidase subunit I (COI) Folmer region obtained for the two juveniles with those obtained for adults ofP. ferruginea, P. caerulea, P. rustica, andP. ulyssiponensis, from different sites of the western Mediterranean, by means of maximum likelihood cluster analysis and a Bayesian-based assignment test. Results obtained evidenced that: (i) COI may be used with confidence as DNA barcoding in the genusPatella; and (ii) the two juveniles studied are not conspecific: one belonged toP. ferruginea, the other toP. rustica.The latter finding raises doubts about the juvenile phoresis and about the occurrence of larval philopatry inP. ferruginea, suggesting that an extensive use of a molecular approach for a better evaluation of the recruitment features of this endangered species should be adopted.


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