Morphometric study of the red shrimp Aristeus antennatus in the Eastern Mediterranean

Abstract

The relative growth of body parts (abdomen, uropod, scaphocerite, telson, rostrum and the third pereiopod) of both sexes of red shrimp Aristeus antennatus was studied in the Greek and Italian Ionian Sea (Eastern Mediterranean), at a depth range from 546 to 1,047 m. Morphometric relationships in the sexes showed similar patterns of relative growth in the two study areas. Although, morphological characters (abdomen, carapace length, pereiopod, rostrum, scaphocerite, telson, uropod and weight) of female were significantly greater than males, in both areas the observed differences between sexes could also attributed to the seasonal mobility pattern of females and to their reproductive activity. A negative allometry of swimming morphological characters (uropod, scaphocerite, telson) and of abdomen (related to the rapid locomotion, reproduction) was found in both sexes and areas. In contrast to this, the growth the third pereiopod (involved in walking ability) in both sexes and areas was isometric. Males showed no correlation of rostrum length with size. Some morphological characters (pereiopod, scaphocerite, uropodal exopodite) were proportionally longer in juvenile females than in adult females, indicating that the allometry differs for this species during its life cycle. A clear increasing trend of females' size, including all the morphological characters, was shown with decreasing temperature and increasing depth.

Eco-morphological consequences of the ‘rostral loss’ in the intertidal marine shrimp Hippolyte sapphica morphotypes

“…The morphometric measures reflected different aspects of its functional morphology (Sardà et al ., 2005; Kapiris & Kavvadas, 2009), such as vision (eye), defence and streamlining (rostrum), walking (pereiopod) and swimming ability (pleopod, tail, telson, uropod), orientation and maintaining direction (scaphocerite), metabolic (carapace) and reproductive (abdomen) capacity. All the morphometric variables (landmarks and distances), which were used in the present study, are shown in Figure 1.…”

“…Rostral polymorphisms in shrimps are rather common phenomena, which can be observed in both marine (De Grave, 1999; Kapiris, 2005; Kapiris & Kavvadas, 2009) and freshwater species (Anastasiadou et al ., 2004; Ocasio-Torres et al ., 2015a). They are usually related to sexual dimorphism (d'Udekem d'Acoz, 1996; Kapiris & Thessalou-Legaki, 2001), reproductive age (Lozano-Álvarez et al ., 2007), strategies for the avoidance of predation (Jugovic et al ., 2010; Ocasio-Torres et al ., 2014, 2015b) and other micro-evolutionary factors.…”

Seasonal Dynamics of the Phenotypic Structure of a Natural Epischura baicalensis Sars Population in Terms of Quantitative Morphological Traits

“… ýòîì ñëó÷àå âûáîðêè ñ íèçêèìè çíà÷åíèÿìè ïðèçíàêà ïðèìåðíî íà Èçâåñòíî, ÷òî âûñîêàÿ òåìïåðàòóðà óñêîðÿåò ðàçâèòèå è ïðèâîäèò ê ôîðìèðîâàíèþ ìåëêèõ îñîáåé, íèçêàÿ òåìïåðàòóðà õàðàêòåðèçóåòñÿ ïðîòèâîïîëîaeíûì ýôôåêòîì. Òàêàÿ çàêîíîìåðíîñòü õàðàêòåðíà äëÿ áîëüøèíñòâà áåñïîçâîíî÷íûõ, â òîì ÷èñëå äëÿ êîïåïîä [Ãðå÷àíûé è äð., 1997, 2004Belmonte, 2006;Kapiris, Kavvadas, 2009].  òî aeå âðåìÿ ðàçìåðû âçðîñëûõ ñàìîê E. baicalensis îáðàòíî ñâÿçàíû ñ òåìïåðàòóðîé âîäû, â êîòîðîé îíè aeèâóò [Àôàíàñüåâà, 1995].…”

“…Ïîñêîëüêó àíòåííû ÿâëÿþòñÿ âàaeíûì îðãàíîì äâèaeåíèÿ ó ïëàíêòîííûõ ðàêîîáðàçíûõ, òî ìîaeíî ïðåäïîëàãàòü, ÷òî óäëèíåíèå ýòèõ îðãàíîâ èëè óâåëè÷åíèå èõ ïëîùàäè çà ñ÷åò áîëüøåãî ÷èñëà ùåòèíîê äàåò îïðåäåëåííûå ïðåèìóùåñòâà âî âðåìÿ ñîâåðøåíèÿ ñóòî÷íûõ âåðòèêàëüíûõ ìèãðàöèé ðà÷êà â óñëîâèÿõ èçìåíåíèÿ ãèäðîëîãè-÷åñêèõ ïàðàìåòðîâ. Ñâÿçü ìåaeäó ðàçìåðàìè ìîðôîëîãè÷åñêèõ ñòðóêòóð, îòâå÷àþùèõ çà ëîêîìîöèþ, è ñåçîííûì èçìåíåíèåì àêòèâíîñòè ñóòî÷íûõ ìèãðàöèé îáíàðóaeåíà è ó ñðåäèçåìíîìîðñêîé êðåâåòêè Aristeus antennàtus [Kapiris, Kavvadas, 2009].…”

Προσδιορισμός Λιπιδίων Και Μετάλλων Σε Βρώσιμα Υδρόβια

“…Συχνά το είδος αυτό συγχέεται με ένα άλλο είδος παρόμοιου μεγέθους, την Aristeus antennatus (μωβ-κόκκινη γαρίδα βαθέων υδάτων). Οι A. antennatus ανήκουν και αυτές στην οικογένεια Aristeidae [15][16][17]. Έχουν ένα ελαφρώς κόκκινο, μαργαριταρώδες ροζ χρώμα, με βιολετί αποχρώσεις στην επιφάνεια του κεφαλοθώρακα και στις αρθρώσεις των κοιλιακών τμημάτων.…”