Constantinos Papaconstantinou - Academia.edu (original) (raw)

Papers by Constantinos Papaconstantinou

Research paper thumbnail of Predicting demersal fish species distributions in the Mediterranean Sea using artificial neural networks

Marine Ecology Progress Series, 2003

Research paper thumbnail of Food Segregation of Sympatric Mullus Barbatus and Mullus Surmuletus in the Aegean Sea

Israel Journal of Zoology, 2001

Research paper thumbnail of Developing an FLR operational model for evaluation of fisheries management strategies: an application to hake fishery

An operational population model for hake developed in FLR framework of the R language under the E... more An operational population model for hake developed in FLR framework of the R language under the EFIMAS project is presented. Two effort restriction scenarios were tested (10% and 20% reduction of fishing mortality F). The response of the hake fishery in these two management measures was evaluated for a 10-year projection period. Hake is one of the main target species of several multi-species Mediter-ranean fisheries and especially of the bottom trawlers exploiting the conti-nental slope. On the basis of the available data most of the hake stocks in the Mediterranean are either fully exploited or overexploited. In most of the cases a decreasing trend in individual lengths of the hake caught and in the catches per unit of effort of the trawlers can be observed. Fisheries management in the Mediterranean is based mainly on technical measures and control effort regimes i.e. a minimum landing size of 20 cm, a prohi-bition of bottom trawling within three miles of the coast or in depths les...

Research paper thumbnail of Preliminary study on age, growth and reproduction of Mustelus mustelus (Elasmobranchii: Carcharhiniformes: Triakidae) inhabiting the Gulf of Iskenderun, north-eastern Mediterranean Sea

Acta Ichthyologica et Piscatoria

Research paper thumbnail of Some Biological Parameters of the Thin-Lipped Mullet Liza Ramada in Benghazi Coast - Libya

American Research Journal of Agriculture, 2016

Research paper thumbnail of An updated checklist of the fishes in the Hellenic Seas

ABSTRACT The present checklist of Hellenic marine fishes includes 510 species (441 Osteichthyes, ... more ABSTRACT The present checklist of Hellenic marine fishes includes 510 species (441 Osteichthyes, 68 Chodrichthyes and 1 Agnatha), belonging to 319 genera (278 Osteichthyes, 40 Chodrichthyes, 1 Agnatha) and 142 families (117 Osteichthyes, 24 Chodrichthyes, 1 Agnatha). The previous, 1988 edition, reported 447 marine fishes, representing 129 families, including both species in doubt and those occasionally recorded. This edition, for the first time, includes an analysis of the distribution of eggs and larvae of various fish species in the Hellenic Seas, based on the results of the ichthyoplankton research that started in Greece after 1990. The inclusion of an additional 63 species in the Hellenic icthyofauna since 1988 is attributed to the increase in the number of recently introduced species and to the finding of a significant number of bathyal species fished mainly from the Ionian Sea. The increase of alien species can be attributed to the rise of sea temperature in the Mediterranean, which has led to the introduction and spreading of Lessepsian immigrants to the Hellenic Seas. In addition, the development of marine research and its expansion to cover deeper ecosystems might have also contributed to this increase in the number of species reported from Hellenic marine waters. The number of species reported from the Hellenic Seas (510 species) is substantially lower than the 684 (including sub-species) fish species (602 bony fish, 79 cartilaginous and 3 cyclostomes) reported for the Mediterranean Sea (Psomadakis et al., 2012). All 510 species are sublittoral, bathypelagic, or bathydemersal species, whereas abyssal species are not known in the area. The Hellenic Seas are mainly characterized by a subtropical fish fauna and less by a tropical and a pontic one. Hellenic marine fauna comes from different origins: (a) Atlantic, (b) Worldwide, (c) Mediterranean Endemic, (d) Indian or Pacific and Atlantic immigrants during the last century through the Suez Canal and the Strait of Gibraltar, respectively, (e) Black Sea immigrants through the Dardanelle Straits and (f) some relics of the Tethys Sea. Most of the listed species, i.e. 310 (60.8%) are of AtlanticMediterranean origin. Furthermore, 105 (20.6%) species have a Worldwide distribution, 50 species (9.8%) are Endemic to theMediterranean Sea, 34 (6.6%) species are of Pacific/Indo-Pacific origin of which 32 species (6.3%) are Lessepsian immigrants, and, finally, 12 species (2.3%) have a Mediterranean and Black Sea distribution. The following information is provided for each of the 510 species: the scientific name and the authors; the zoogeographical distribution of each species [coded as: Atlanto-Mediterranean (A-M), Atlantic (A), Endemic in the Mediterranean (E), Worldwide (W), Lessepsian immigrant (L), Black Sea (BIS), Indian Ocean (I) and Pacific Ocean (P)]. Species of doubtful presence are indicated with a question mark; the exact geographical distribution in the Hellenic Seas (exact place, references, date, page in the cited reference); information on doubtful species, and/-or species whose presence was reported by mistake in the region or suspected to have arrived through mariculture appears as a footnote at the end of each page. When one studies the ichthyofauna of a region presenting view of compiling a checklist, three difficulties arise: (a) the verification of the presence or absence of species, (b) old literature is usually filled with vague or wrong statements that need to be identified and validated, and (c) the existence of various synonyms of species and valid species names. The present checklist of Hellenic marine fish species follows the nomenclature of Eschmayer [The Catalogue of Fishes: Genera, Species Reference (ed., 2013)] and the last edition of FishBase (Froese & Pauly, 2012), for valid names and synonyms of the species

Research paper thumbnail of On the biology of the species Lepidotrigla cavillone (Fam. Triglidae) of the greek seas

Research paper thumbnail of Annotated records of scombroid eggs and larvae distribution in northeastern Mediterranean waters

Mediterranean Marine Science, 2008

Research paper thumbnail of A new record of a bathypelagic fish, Bellottia apoda Cigl., 1833, in Saronikos Gulf, Greece (Pisces, Perciformes)

Research paper thumbnail of On the biology of the Lepidotrigla cavillone (Family Triglidae) of the Greek Seas

Research paper thumbnail of Dynamics of demersal fish stocks in the Korinthiakos and Patraikos Gulfs and in the Ionian Sea. Part II

Research paper thumbnail of Age and growth studies of hake (Merluccius merluccius L., 1758) of the Saronikos and Thermaikos gulfs

Research paper thumbnail of On a collection of fishes from Thermaikos Gulf (N.E.Greece)

Research paper thumbnail of The skull of the Mediterranean species of Blennius L., 1758 (A comparative anatomical study) (Pisces, Blenniidae)

Research paper thumbnail of The thyroide gland of some Mediterranean Blennii (Pisces, Blenniidae). II. Physiology

Research paper thumbnail of Some uncommon fishes from the Aegean Sea

Research paper thumbnail of Affinites et distribution geographiques des especes Pholis smyrnensis Val. 1836 et Blennius basiliscus Val. 1836 (Pisces Blenniidae)

Research paper thumbnail of The distribution of Merlangius merlangus euxinus in the Aegean Sea

Research paper thumbnail of Age and growth of grey gurnard (Eutrigla gurnardus) in Pagassitikos Gulf (Greece)

Research paper thumbnail of Age and grouth of piper, Trigla lyra, in Saronikos Gulf (Greece)

Research paper thumbnail of Predicting demersal fish species distributions in the Mediterranean Sea using artificial neural networks

Marine Ecology Progress Series, 2003

Research paper thumbnail of Food Segregation of Sympatric Mullus Barbatus and Mullus Surmuletus in the Aegean Sea

Israel Journal of Zoology, 2001

Research paper thumbnail of Developing an FLR operational model for evaluation of fisheries management strategies: an application to hake fishery

An operational population model for hake developed in FLR framework of the R language under the E... more An operational population model for hake developed in FLR framework of the R language under the EFIMAS project is presented. Two effort restriction scenarios were tested (10% and 20% reduction of fishing mortality F). The response of the hake fishery in these two management measures was evaluated for a 10-year projection period. Hake is one of the main target species of several multi-species Mediter-ranean fisheries and especially of the bottom trawlers exploiting the conti-nental slope. On the basis of the available data most of the hake stocks in the Mediterranean are either fully exploited or overexploited. In most of the cases a decreasing trend in individual lengths of the hake caught and in the catches per unit of effort of the trawlers can be observed. Fisheries management in the Mediterranean is based mainly on technical measures and control effort regimes i.e. a minimum landing size of 20 cm, a prohi-bition of bottom trawling within three miles of the coast or in depths les...

Research paper thumbnail of Preliminary study on age, growth and reproduction of Mustelus mustelus (Elasmobranchii: Carcharhiniformes: Triakidae) inhabiting the Gulf of Iskenderun, north-eastern Mediterranean Sea

Acta Ichthyologica et Piscatoria

Research paper thumbnail of Some Biological Parameters of the Thin-Lipped Mullet Liza Ramada in Benghazi Coast - Libya

American Research Journal of Agriculture, 2016

Research paper thumbnail of An updated checklist of the fishes in the Hellenic Seas

ABSTRACT The present checklist of Hellenic marine fishes includes 510 species (441 Osteichthyes, ... more ABSTRACT The present checklist of Hellenic marine fishes includes 510 species (441 Osteichthyes, 68 Chodrichthyes and 1 Agnatha), belonging to 319 genera (278 Osteichthyes, 40 Chodrichthyes, 1 Agnatha) and 142 families (117 Osteichthyes, 24 Chodrichthyes, 1 Agnatha). The previous, 1988 edition, reported 447 marine fishes, representing 129 families, including both species in doubt and those occasionally recorded. This edition, for the first time, includes an analysis of the distribution of eggs and larvae of various fish species in the Hellenic Seas, based on the results of the ichthyoplankton research that started in Greece after 1990. The inclusion of an additional 63 species in the Hellenic icthyofauna since 1988 is attributed to the increase in the number of recently introduced species and to the finding of a significant number of bathyal species fished mainly from the Ionian Sea. The increase of alien species can be attributed to the rise of sea temperature in the Mediterranean, which has led to the introduction and spreading of Lessepsian immigrants to the Hellenic Seas. In addition, the development of marine research and its expansion to cover deeper ecosystems might have also contributed to this increase in the number of species reported from Hellenic marine waters. The number of species reported from the Hellenic Seas (510 species) is substantially lower than the 684 (including sub-species) fish species (602 bony fish, 79 cartilaginous and 3 cyclostomes) reported for the Mediterranean Sea (Psomadakis et al., 2012). All 510 species are sublittoral, bathypelagic, or bathydemersal species, whereas abyssal species are not known in the area. The Hellenic Seas are mainly characterized by a subtropical fish fauna and less by a tropical and a pontic one. Hellenic marine fauna comes from different origins: (a) Atlantic, (b) Worldwide, (c) Mediterranean Endemic, (d) Indian or Pacific and Atlantic immigrants during the last century through the Suez Canal and the Strait of Gibraltar, respectively, (e) Black Sea immigrants through the Dardanelle Straits and (f) some relics of the Tethys Sea. Most of the listed species, i.e. 310 (60.8%) are of AtlanticMediterranean origin. Furthermore, 105 (20.6%) species have a Worldwide distribution, 50 species (9.8%) are Endemic to theMediterranean Sea, 34 (6.6%) species are of Pacific/Indo-Pacific origin of which 32 species (6.3%) are Lessepsian immigrants, and, finally, 12 species (2.3%) have a Mediterranean and Black Sea distribution. The following information is provided for each of the 510 species: the scientific name and the authors; the zoogeographical distribution of each species [coded as: Atlanto-Mediterranean (A-M), Atlantic (A), Endemic in the Mediterranean (E), Worldwide (W), Lessepsian immigrant (L), Black Sea (BIS), Indian Ocean (I) and Pacific Ocean (P)]. Species of doubtful presence are indicated with a question mark; the exact geographical distribution in the Hellenic Seas (exact place, references, date, page in the cited reference); information on doubtful species, and/-or species whose presence was reported by mistake in the region or suspected to have arrived through mariculture appears as a footnote at the end of each page. When one studies the ichthyofauna of a region presenting view of compiling a checklist, three difficulties arise: (a) the verification of the presence or absence of species, (b) old literature is usually filled with vague or wrong statements that need to be identified and validated, and (c) the existence of various synonyms of species and valid species names. The present checklist of Hellenic marine fish species follows the nomenclature of Eschmayer [The Catalogue of Fishes: Genera, Species Reference (ed., 2013)] and the last edition of FishBase (Froese & Pauly, 2012), for valid names and synonyms of the species

Research paper thumbnail of On the biology of the species Lepidotrigla cavillone (Fam. Triglidae) of the greek seas

Research paper thumbnail of Annotated records of scombroid eggs and larvae distribution in northeastern Mediterranean waters

Mediterranean Marine Science, 2008

Research paper thumbnail of A new record of a bathypelagic fish, Bellottia apoda Cigl., 1833, in Saronikos Gulf, Greece (Pisces, Perciformes)

Research paper thumbnail of On the biology of the Lepidotrigla cavillone (Family Triglidae) of the Greek Seas

Research paper thumbnail of Dynamics of demersal fish stocks in the Korinthiakos and Patraikos Gulfs and in the Ionian Sea. Part II

Research paper thumbnail of Age and growth studies of hake (Merluccius merluccius L., 1758) of the Saronikos and Thermaikos gulfs

Research paper thumbnail of On a collection of fishes from Thermaikos Gulf (N.E.Greece)

Research paper thumbnail of The skull of the Mediterranean species of Blennius L., 1758 (A comparative anatomical study) (Pisces, Blenniidae)

Research paper thumbnail of The thyroide gland of some Mediterranean Blennii (Pisces, Blenniidae). II. Physiology

Research paper thumbnail of Some uncommon fishes from the Aegean Sea

Research paper thumbnail of Affinites et distribution geographiques des especes Pholis smyrnensis Val. 1836 et Blennius basiliscus Val. 1836 (Pisces Blenniidae)

Research paper thumbnail of The distribution of Merlangius merlangus euxinus in the Aegean Sea

Research paper thumbnail of Age and growth of grey gurnard (Eutrigla gurnardus) in Pagassitikos Gulf (Greece)

Research paper thumbnail of Age and grouth of piper, Trigla lyra, in Saronikos Gulf (Greece)