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Article: Evidence for Beneficial Physiological Responses of the Land Snail

Efstratiou, Efstratios / Feidantsis, Konstantinos / Makri, Vasiliki / Staikou, Alexandra / Giantsis, Ioannis A

Animals : an open access journal from MDPI

2024 Volume 14, Issue 6

Abstract: A large variety of microorganisms ingested with food constitute animals' intestinal microflora, enhancing and maintaining the homeostasis of the host. Rations enriched with probiotics are a method recommended to prevent undesirable conditions. To date, ... ...

Abstract	A large variety of microorganisms ingested with food constitute animals' intestinal microflora, enhancing and maintaining the homeostasis of the host. Rations enriched with probiotics are a method recommended to prevent undesirable conditions. To date, research has been limited to farmed animals and reared fish, creating a knowledge gap concerning the effect of probiotics on the growth rate, physiological responses, and energy metabolism of invertebrates such as the land snail
Language	English
Publishing date	2024-03-11
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2606558-7
ISSN	2076-2615
ISSN	2076-2615
DOI	10.3390/ani14060857
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Histopathology and Phylogeny of the Dinoflagellate

Lattos, Athanasios / Papadopoulos, Dimitrios K / Giantsis, Ioannis A / Stamelos, Alexios / Karagiannis, Dimitrios

Microorganisms

2024 Volume 12, Issue 3

Abstract: Bioinvasions constitute both a direct and an indirect threat to ecosystems. Direct threats include pressures on local trophic chains, while indirect threats might take the form of an invasion of a microorganism alongside its host. The marine ... ...

Abstract	Bioinvasions constitute both a direct and an indirect threat to ecosystems. Direct threats include pressures on local trophic chains, while indirect threats might take the form of an invasion of a microorganism alongside its host. The marine dinoflagellate
Language	English
Publishing date	2024-02-23
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2720891-6
ISSN	2076-2607
ISSN	2076-2607
DOI	10.3390/microorganisms12030456
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Article ; Online: Increased seawater temperature triggers thermal, oxidative and metabolic response of Ostrea edulis, leading to anaerobiosis.

Georgoulis, Ioannis / Papadopoulos, Dimitrios K / Lattos, Athanasios / Michaelidis, Basile / Feidantsis, Konstantinos / Giantsis, Ioannis A

Comparative biochemistry and physiology. Part B, Biochemistry & molecular biology

2024 Volume 271, Page(s) 110943

Abstract: Bivalves are among the marine organisms most influenced by climate change. Despite the flat oyster's Ostrea edulis high economic value, its culture is developed on a very small scale, since this species possesses a strong susceptibility to abiotic ... ...

Abstract	Bivalves are among the marine organisms most influenced by climate change. Despite the flat oyster's Ostrea edulis high economic value, its culture is developed on a very small scale, since this species possesses a strong susceptibility to abiotic stressors. Due to climate change, temperature is one of the most critical environmental parameters for the welfare of the Mediterranean basin's marine inhabitants. The present study's purpose was to investigate the physiological performance of the Mediterranean's native O. edulis as it faces exposure to different temperatures. Since juveniles are more susceptible to abiotic stressors, this experimental procedure was focused on young individuals. The seawater temperatures studied included a standard control temperature of 21 °C (often observed in several marine areas throughout the Mediterranean), as well as increased seawater temperatures of 25 °C and 28 °C, occasionally occurring in shallow Mediterranean waters inhabited by bivalve spat. These were selected since the tissues of O. edulis becomes partly anaerobic in temperatures exceeding 26 °C, while cardiac dysfunction (arrhythmia) emerges at 28 °C. The results demonstrate that temperatures above 25 °C trigger both the transcriptional upregulation of hsp70 and hsp90, and the antioxidant genes Cu/Zn sod and catalase. Enhancement of thermal tolerance and increased defense against increased ROS production during thermal stress, were observed. As the intensity and duration of thermal stress increases, apoptotic damage may also occur. The increased oxidative and thermal stress incurred at the highest temperature of 28 °C, seemed to trigger the switch from aerobic to anaerobic metabolism, reflected by higher pepck mRNA expressions and lower ETS activity.
MeSH term(s)	Humans ; Animals ; Temperature ; Anaerobiosis ; Ostrea ; Bivalvia/physiology ; Oxidative Stress ; Seawater
Language	English
Publishing date	2024-01-13
Publishing country	England
Document type	Journal Article
ZDB-ID	121247-3
ISSN	1879-1107 ; 0305-0491 ; 1096-4959
ISSN (online)	1879-1107
ISSN	0305-0491 ; 1096-4959
DOI	10.1016/j.cbpb.2024.110943
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Article ; Online: Association of MTNR1A and GDF9 gene allelles with the reproductive performance, response to oestrus induction treatments and prolificacy, in improved and non-improved local indigenous sheep breeds.

Antonopoulou, Danai / Giantsis, Ioannis A / Symeon, George K / Avdi, Melpomeni

Reproduction in domestic animals = Zuchthygiene

2023 Volume 58, Issue 11, Page(s) 1532–1541

Abstract: Sheep farming plays a crucial role for Mediterranean countries, wherefrom a plethora of dairy products is produced. Yet, numerous indigenous sheep breeds in temperate latitudes such as the Mediterranean present a serious drawback that milk production is ... ...

Abstract	Sheep farming plays a crucial role for Mediterranean countries, wherefrom a plethora of dairy products is produced. Yet, numerous indigenous sheep breeds in temperate latitudes such as the Mediterranean present a serious drawback that milk production is impaired by the seasonality of reproduction. Towards the efforts for reduction of this phenomenon, the purpose of this study was to evaluate and compare different oestrus synchronization treatments, as well as to associate two genes alleles', namely the MTNR1A and the GDF9, with the response to those treatments. Three indigenous breeds were investigated (Florina, Chios and Karagouniko sheep) and inside each breed three different oestrus synchronization treatments were applied (A: intravaginal sponges, B: GNRH use and C: male effect). In group A, Florina ewes expressed oestrus at 90% in July and fecundity was 85%. Karagouniko and Chios ewes exhibited an oestrus expression of 100% with fecundity rates at 95% and 99%, respectively. In group B, Florina ewes expressed oestrus at 60% with fecundity at 57%, Karagouniko ewes expressed oestrus at 65% with fecundity at 54%, whereas Chios breed animals expressed oestrus at 87% with fecundity rate at 85%. In group C, 68% of the Florina breed expressed oestrus 20-25 days post ram induction, whereas this proportion was 84% and 94%, for Karagouniko and Chios breed, respectively. For the molecular analysis, partial segments of the two genes were sequenced and analysed, whereas alleles were scored based on the detected SNPs. All frequencies of the four detected SNPs in MTNR1A gene were statistically and significantly different in ewes that expressed oestrus in comparison with ewes that did not express oestrus in Florina and Karagouniko breeds concerning all treatments. Two SNP's were detected in GDF9 gene, G1 and Fec
MeSH term(s)	Sheep/genetics ; Animals ; Male ; Female ; Reproduction/genetics ; Fertility/genetics ; Estrus/physiology ; Estrus Synchronization ; Mutation
Language	English
Publishing date	2023-09-05
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1015187-4
ISSN	1439-0531 ; 0936-6768
ISSN (online)	1439-0531
ISSN	0936-6768
DOI	10.1111/rda.14468
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Article ; Online: The Coding Mitogenome of the Freshwater Crayfish Pontastacus leptodactylus (Decapoda:Astacidea:Astacidae) from Lake Vegoritida, Greece and Its Taxonomic Classification

Alvanou, Maria V. / Apostolidis, Apostolos P. / Lattos, Athanasios / Michaelidis, Basile / Giantsis, Ioannis A.

Genes (Basel). 2023 Feb. 15, v. 14, no. 2

2023

Abstract: Pontastacus leptodactylus (Eschscholtz, 1823) (Decapoda:Astacidea:Astacidae) constitutes an ecologically and economically highly important species. In the present study, the mitochondrial genome of the freshwater crayfish P. leptodactylus from Greece is ... ...

Abstract	Pontastacus leptodactylus (Eschscholtz, 1823) (Decapoda:Astacidea:Astacidae) constitutes an ecologically and economically highly important species. In the present study, the mitochondrial genome of the freshwater crayfish P. leptodactylus from Greece is analyzed for the first time, using 15 newly designed primer pairs based on available sequences of closely related species. The analyzed coding part of the mitochondrial genome of P. leptodactylus consists of 15,050 base pairs including 13 protein-coding genes (PCGs), 2 ribosomal RNA gene (rRNAs), and 22 transfer RNA genes (tRNAs). These newly designed primers may be particularly useful in future studies for analyzing different mitochondrial DNA segments. Based on the entire mitochondrial genome sequence, compared to other haplotypes from related species belonging in the same family (Astacidae) available in the GenBank database, a phylogenetic tree was constructed depicting the phylogenetic relationships of P. leptodactylus. Based on the results, the genetic distance between Astacus astacus and P. leptodactylus is smaller than the genetic distance between Austropotamobius pallipes and Austropotamobius torrentium, despite the fact that the latter two are classified within the same genus, questioning the phylogenetic position of A. astacus as a different genus than P. leptodactylus. In addition, the sample from Greece seems genetically distant compared with a conspecific haplotype available in the GenBank database, possibly implying a genetic distinction of P. leptodactylus from Greece.
Keywords	Astacus astacus ; conspecificity ; freshwater crayfish ; genes ; genetic databases ; genetic distance ; haplotypes ; lakes ; mitochondrial DNA ; mitochondrial genome ; nucleotide sequences ; phylogeny ; ribosomal RNA ; transfer RNA ; Greece
Language	English
Dates of publication	2023-0215
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article ; Online
ZDB-ID	2527218-4
ISSN	2073-4425
ISSN	2073-4425
DOI	10.3390/genes14020494
Database	NAL-Catalogue (AGRICOLA)

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Article: Seasonality in Synergism with Multi-Pathogen Presence Leads to Mass Mortalities of the Highly Endangered

Lattos, Athanasios / Feidantsis, Konstantinos / Giantsis, Ioannis A / Theodorou, John A / Michaelidis, Basile

Microorganisms

2023 Volume 11, Issue 5

Abstract: Mortalities ... ...

Abstract	Mortalities of
Language	English
Publishing date	2023-04-25
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2720891-6
ISSN	2076-2607
ISSN	2076-2607
DOI	10.3390/microorganisms11051117
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Article ; Online: The Coding Mitogenome of the Freshwater Crayfish

Alvanou, Maria V / Apostolidis, Apostolos P / Lattos, Athanasios / Michaelidis, Basile / Giantsis, Ioannis A

Genes

2023 Volume 14, Issue 2

Abstract: Pontastacus ... ...

Abstract	Pontastacus leptodactylus
MeSH term(s)	Animals ; Astacoidea/genetics ; Greece ; Lakes ; Genome, Mitochondrial ; Phylogeny ; Decapoda/genetics
Language	English
Publishing date	2023-02-15
Publishing country	Switzerland
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2527218-4
ISSN	2073-4425 ; 2073-4425
ISSN (online)	2073-4425
ISSN	2073-4425
DOI	10.3390/genes14020494
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Article: Probiotics, Prebiotics, and Synbiotics Utilization in Crayfish Aquaculture and Factors Affecting Gut Microbiota.

Alvanou, Maria V / Feidantsis, Konstantinos / Staikou, Alexandra / Apostolidis, Apostolos P / Michaelidis, Basile / Giantsis, Ioannis A

Microorganisms

2023 Volume 11, Issue 5

Abstract: Aquaculture is affected by numerous factors that may cause various health threats that have to be controlled by the most environmentally friendly approaches. In this context, prebiotics, probiotics, and synbiotics are frequently incorporated into ... ...

Abstract	Aquaculture is affected by numerous factors that may cause various health threats that have to be controlled by the most environmentally friendly approaches. In this context, prebiotics, probiotics, and synbiotics are frequently incorporated into organisms' feeding rations to ameliorate the health status of the host's intestine, enhancing its functionality and physiological performance, and to confront increasing antimicrobial resistance. The first step in this direction is the understanding of the complex microbiome system of the organism in order to administer the optimal supplement, in the best concentration, and in the correct way. In the present review, pre-, pro-, and synbiotics as aquaculture additives, together with the factors affecting gut microbiome in crayfish, are discussed, combined with their future prospective outcomes. Probiotics constitute non-pathogenic bacteria, mainly focused on organisms' energy production and efficient immune response; prebiotics constitute fiber indigestible by the host organism, which promote the preferred gastrointestinal tract microorganisms' growth and activity towards the optimum balance between the gastrointestinal and immune system's microbiota; whereas synbiotics constitute their combination as a blend. Among pro-, pre-, and synbiotics' multiple benefits are boosted immunity, increased resistance towards pathogens, and overall welfare promotion. Furthermore, we reviewed the intestinal microbiota abundance and composition, which are found to be influenced by a plethora of factors, including the organism's developmental stage, infection by pathogens, diet, environmental conditions, culture methods, and exposure to toxins. Intestinal microbial communities in crayfish exhibit high plasticity, with infections leading to reduced diversity and abundance. The addition of synbiotic supplementation seems to provide better results than probiotics and prebiotics separately; however, there are still conflicting results regarding the optimal concentration.
Language	English
Publishing date	2023-05-07
Publishing country	Switzerland
Document type	Journal Article ; Review
ZDB-ID	2720891-6
ISSN	2076-2607
ISSN	2076-2607
DOI	10.3390/microorganisms11051232
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Article ; Online: The impact of ascidian biofouling on the farmed Mediterranean mussel

Papadopoulos, Dimitrios K / Lattos, Athanasios / Giantsis, Ioannis A / Theodorou, John A / Michaelidis, Basile / Feidantsis, Konstantinos

Biofouling

2023 Volume 39, Issue 3, Page(s) 271–288

Abstract: In biofouling communities, ascidians are among the most damaging species, presenting severe threats, such as depressed growth rates and decreased chances of lower survival, to shellfish aquaculture. However, little is known concerning the fouled ... ...

Abstract	In biofouling communities, ascidians are among the most damaging species, presenting severe threats, such as depressed growth rates and decreased chances of lower survival, to shellfish aquaculture. However, little is known concerning the fouled shellfish physiology. In an effort to obtain information for the magnitude of stress caused by ascidians to farmed
MeSH term(s)	Animals ; Mytilus ; Biofouling ; Urochordata ; Biofilms ; Biomarkers
Chemical Substances	Biomarkers
Language	English
Publishing date	2023-05-05
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	1029-2454
ISSN (online)	1029-2454
DOI	10.1080/08927014.2023.2209015
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Article ; Online: Influence of temperature on embryonic development of Pontastacus leptodactylus freshwater crayfish, and characterization of growth and osmoregulation related genes.

Alvanou, Maria V / Feidantsis, Konstantinos / Lattos, Athanasios / Stoforiadi, Anthi / Apostolidis, Apostolos P / Michaelidis, Basile / Giantsis, Ioannis A

BMC zoology

2024 Volume 9, Issue 1, Page(s) 8

Abstract: Narrow clawed crayfish, Pontastacus (Astacus) leptodactylus, represents an ecologically and economically valuable freshwater species. Despite the high importance of artificial breeding for conservation purpose and aquaculture potential, hatching ... ...

Abstract	Narrow clawed crayfish, Pontastacus (Astacus) leptodactylus, represents an ecologically and economically valuable freshwater species. Despite the high importance of artificial breeding for conservation purpose and aquaculture potential, hatching protocols have not been developed so far in this species. Further, limited knowledge exists regarding the artificial egg incubation, the temperature effect on embryonic development, hatching synchronization and hatching rate. In the present study we investigated the temperature increase (from 17
Language	English
Publishing date	2024-04-28
Publishing country	England
Document type	Journal Article
ISSN	2056-3132
ISSN (online)	2056-3132
DOI	10.1186/s40850-024-00198-9
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