Biometry and distribution of snipefish, Macroramphosus scolopax(Linnaeus, 1758), in the Adriatic Sea

Specimens of the snipefish, Macroramphosus scolopax (Linnaeus, 1758), from the middle and southern Adriatic were biometrically analyzed during the demersal communities research project, MEDITS. The specimens (n = 103) were caught at depths deeper than 100 m. Total length ranged 4.8-16.0 cm, with a mean of 9.45±2.796 cm. According to the length-weight relationship, positive allometric growth was established (b = 3.23)

Biometrija, dužinsko-dužinski i dužinsko-maseni odnosi juvenilne i adultne palamide, Sarda sarda (Bloch, 1793), u istočnom srednjem Jadranu

This paper presents some biological features of juvenile and adult specimens of Atlantic bonito, Sarda sarda (Bloch, 1793), in the eastern middle Adriatic Sea. A total of 194 specimens were analysed, of which 93 were juveniles and 101 were adults. Juvenile individuals ranged from 5.7 to 8.4 cm while adults ranged from 39.3 to 56.7 cm. In order to analyse biometry, nine morphometric characters were analysed. Length-length equations for overall converted body lengths of fish were linear. Comparison of length-length relationships between juvenile and adult specimens showed statistically significant differences in almost all morphometric characteristics, except for the fork length–second dorsal fin base. Females insignificantly prevailed in adults. Overall gonads were in post-spawning state. Juveniles were unsexed. Length-weight relationships of juveniles and adults were W = 0.0033LF3.424 and W = 0.0149LF2.984, respectively.U radu su analizirani juvenilni i adultni primjerci palamide, Sarda sarda (Bloch, 1793), prikupljeni na području istočnog dijela srednjeg Jadranskog mora. Ukupno je obrađeno 194 primjerka, od čega je 93 juvenilnih i 101 adultni. Analizom biometrijskih svojstava zabilježene su promjene morfometrijskih odnosa s porastom vilične dužine (LF), te je utvrđeno da postoji statistički značajna razlika između morfometrijskih odnosa juvenilnih i adultnih primjeraka palamide, osim kod odnosa LF-LD2. Spol je bilo moguće odrediti samo kod adultnih primjeraka, gdje su brojčano neznatno dominirale ženke. Analizom stanja gonada utvrđeno je da su se svi adultni primjerci izmrijestili. Kod juvenilnih primjeraka dužinsko–masenim odnosom je utvrđena pozitivna alometrija (b = 3.424), dok je kod adultnih primjeraka utvrđena izometrija (b = 2.984)

Biometrija, dužinsko-dužinski i dužinsko-maseni odnosi juvenilne i adultne palamide, Sarda sarda (Bloch, 1793), u istočnom srednjem Jadranu

This paper presents some biological features of juvenile and adult specimens of Atlantic bonito, Sarda sarda (Bloch, 1793), in the eastern middle Adriatic Sea. A total of 194 specimens were analysed, of which 93 were juveniles and 101 were adults. Juvenile individuals ranged from 5.7 to 8.4 cm while adults ranged from 39.3 to 56.7 cm. In order to analyse biometry, nine morphometric characters were analysed. Length-length equations for overall converted body lengths of fish were linear. Comparison of length-length relationships between juvenile and adult specimens showed statistically significant differences in almost all morphometric characteristics, except for the fork length–second dorsal fin base. Females insignificantly prevailed in adults. Overall gonads were in post-spawning state. Juveniles were unsexed. Length-weight relationships of juveniles and adults were W = 0.0033LF3.424 and W = 0.0149LF2.984, respectively.U radu su analizirani juvenilni i adultni primjerci palamide, Sarda sarda (Bloch, 1793), prikupljeni na području istočnog dijela srednjeg Jadranskog mora. Ukupno je obrađeno 194 primjerka, od čega je 93 juvenilnih i 101 adultni. Analizom biometrijskih svojstava zabilježene su promjene morfometrijskih odnosa s porastom vilične dužine (LF), te je utvrđeno da postoji statistički značajna razlika između morfometrijskih odnosa juvenilnih i adultnih primjeraka palamide, osim kod odnosa LF-LD2. Spol je bilo moguće odrediti samo kod adultnih primjeraka, gdje su brojčano neznatno dominirale ženke. Analizom stanja gonada utvrđeno je da su se svi adultni primjerci izmrijestili. Kod juvenilnih primjeraka dužinsko–masenim odnosom je utvrđena pozitivna alometrija (b = 3.424), dok je kod adultnih primjeraka utvrđena izometrija (b = 2.984)

Reproductive period and histological analysis of the painted comber, Serranus scriba (Linnaeus, 1758), in the Trogir Bay area (eastern mid-Adriatic)

A total of 798 specimens of the painted comber, Serranus scriba(Linnaeus, 1758), were caught in Trogir Bay (eastern mid-Adriatic) from June 2001 to May 2002 and analyzed. Total length ranged 7.1-20.0 cm (mean 11.0±1.7 cm); body weight ranged 4.21-108.99 g (mean 18.59±10.248 g). Histological analysis of 242 specimens confirmed simultaneous hermaphroditism. The annual variation of gonadosomatic index indicates that S. scriba spawns rom May to August. Descriptions based on microscopic examinations of ovarian and testicular tissues are given

El desove de la sardina (Sardina pilchardus) a la luz del análisis del contenido de grasa

Sardine samples from commercial catches obtained by purse seiners operating in Croatian fishing grounds (eastern Adriatic Sea) were collected monthly from March 2017 to February 2018 (excluding January due to a fishing ban). A total of 1085 sardines were analysed. Their total body length and mass ranged from 11.5 to 16.9 cm (mean±SD: 13.9±0.03 cm) and from 11.30 to 54.03 g (mean±SD: 20.31±0.161 g), respectively. Analysis of the length-mass relationship showed positive allometric growth (b=3.3573, r=0.948). Female specimens were predominant (m/f=0.404). According to the monthly gonadosomatic index values, spawning occurred from November to February, which was consistent with previous investigations. The monthly analysis of fat content in the gonads, liver and muscles indicated that the fat content in each studied tissue oscillated seasonally regardless of sex. These alternations were linked to the sardine’s reproductive cycle.Las muestras de sardina de las capturas comerciales obtenidas por los cerqueros que operan en los caladeros croatas (este del mar Adriático) se recogieron mensualmente desde marzo de 2017 hasta febrero de 2018 (excluyendo enero debido a una prohibición de pesca). Se analizaron un total de 1085 sardinas. Su longitud corporal total y masa variaron de 11.5 a 16.9 cm (media±DE: 13.9±0.03 cm) y de 11.30 a 54.03 g (media±DE: 20.31±0.161 g), respectivamente. El análisis de la relación longitud-masa mostró un crecimiento alométrico positivo (b=3.3573, r=0.948). Predominaron los especímenes femeninos (m/f=0.404). De acuerdo con los valores del índice gonadosomático (GSI) mensuales, el desove se produjo de noviembre a febrero, lo cual fue consistente con las investigaciones anteriores. El análisis mensual del contenido de grasa en las gónadas, el hígado y los músculos indicó que el contenido de grasa en cada tejido estudiado oscilaba estacionalmente independientemente del sexo. Estas alternancias estaban vinculadas al ciclo reproductivo de la sardina

Biometry analysis of the Atlantic bonito, Sarda sarda (Bloch, 1793), in the Adriatic Sea

This paper presents the biometry analysis of the Atlantic bonito, Sarda sarda (Bloch, 1793), population in the eastern mid Adriatic Sea for 1997-2000. A total of 665 specimens were analyzed. Fork length ranged 33.0-67.0 cm. Nine morphometric and seven meristic characters were assessed. Sexual dimorphism was noticed in two meristic and three morphometric characters. The relation between total length and fork length is presented. Relative growth was studied by comparing changes in morphological characters with growth in fork length. Length-weight relationship is presented as well

Nalaz brgljuna u istočnom dijelu Jadranskog mora tijekom zime, slučajnost ili ne?

During the survey done from 11thto 14thDecember 2013 in area of Pomo pit (Middle Eastern Adriatic) two anchovy(Engraulis encrasicolus , Linnaeus 1758) eggs were caught with standard plankton net (WP2). Eggs were found at two sampling stations (43 º01.188’ N, 15º 25.796’E and 43º06.213’ N, 15º 15.138’E). This is a first finding of anchovy eggs in December in the offshore areas of middle-eastern Adriatic Sea.Tijekom znanstvenog istraživanja obavljenog u razdoblju od 11. do 14. prosinca 2013. godine na području Jabučke kotline (srednji dio istočnog Jadrana) u ihtioplanktonskim uzorcima prikupljenim sa standardnom planktonskom mrežom (WP2) su pronađena dva jaja brgljuna (Engraulis encrasicolus, Linnaeus 1758) na dvije postaje (43 º01.188’ N, 15º 25.796’E and 43º 06.213’ N, 15º 15.138’E). Ovo je po prvi put zabilježen nalaz jaja brgljuna tijekom prosinca u stupcu morske vode na području otvorenih voda srednjeg istočnog Jadran

Nalaz brgljuna u istočnom dijelu Jadranskog mora tijekom zime, slučajnost ili ne?

During the survey done from 11thto 14thDecember 2013 in area of Pomo pit (Middle Eastern Adriatic) two anchovy(Engraulis encrasicolus , Linnaeus 1758) eggs were caught with standard plankton net (WP2). Eggs were found at two sampling stations (43 º01.188’ N, 15º 25.796’E and 43º06.213’ N, 15º 15.138’E). This is a first finding of anchovy eggs in December in the offshore areas of middle-eastern Adriatic Sea.Tijekom znanstvenog istraživanja obavljenog u razdoblju od 11. do 14. prosinca 2013. godine na području Jabučke kotline (srednji dio istočnog Jadrana) u ihtioplanktonskim uzorcima prikupljenim sa standardnom planktonskom mrežom (WP2) su pronađena dva jaja brgljuna (Engraulis encrasicolus, Linnaeus 1758) na dvije postaje (43 º01.188’ N, 15º 25.796’E and 43º 06.213’ N, 15º 15.138’E). Ovo je po prvi put zabilježen nalaz jaja brgljuna tijekom prosinca u stupcu morske vode na području otvorenih voda srednjeg istočnog Jadran

Najnoviji podatci o maksimalnoj zabilježenoj starosti i dužini pirke Serranus scriba (Linnaeus, 1758) u Mediteranu

The present study was undertaken not only to register the new recently noticed maximum age and total length of Serranus scriba (Linnaeus, 1758), contributing to the knowledge of this species in the Mediterranean and Adriatic Sea inclusively. A painted comber specimen of 323 mm of total length and age 16 years was caught during August 2008 in the Lavdra Channel (middle-eastern Adriatic Sea).Jedinka pirke Serranus scriba (Linnaeus, 1758) je ulovljena uz sjeverozapadnu obalu otoka Mala Lavadra (istočni dio srednjeg Jadrana). Totalna dužina tijela kao i starost ulovljene pirke je najveća zabilježena do sada na području njenog rasprostranjenja i iznosila je 323 mm odnosno 16 godina

Fenotipske značajke iglice Belone belone (Linnaeus, 1761) u Jadranskom moru

The results of biometrical analysis, i.e. twelve morphometric and five meristic characters of garfish, Belone belone (L.1761.), are presented in this paper. All representative samples were collected from commercial catches in the eastern Adriatic Sea during the period from 2003 to 2008. The total length (TL) of all observed specimens (N=3393) ranged from 20.8 to 75.4 cm (38.3±7.94 cm). The sex ratio of all specimens was 1:1.U ovom radu su izneseni rezultati biometrijske analize iglice, Belone belone (Linnaeus, 1761), u čiju svrhu je analizirano dvanaest morfometrijskih i pet merističkih značajki. Sve analizirane jedinke iglice su uzorkovane iz komercijalnih lovina ostvarenih u istočnom dijelu Jadranskog mora u razdoblju od 2003. do 2008. godine. Ukupna dužina tijela (TL) svih jedinki je kolebala od 20,8 cm do 75,4 cm (38.3 ± 7.94 cm). Omjer spolova je iznosio 1:1